Bank-lib tests, using the new (libraries-based) style.

18 files changed, 2005 insertions, 59 deletions

diff --git a/src/bank-lib/Makefile.am b/src/bank-lib/Makefile.am
index 967d95ed..bd1c7e8b 100644
--- a/src/bank-lib/Makefile.am
+++ b/src/bank-lib/Makefile.am
@@ -21,7 +21,8 @@ taler_bank_transfer_LDADD = \
 
 lib_LTLIBRARIES = \
   libtalerbank.la \
-  libtalerfakebank.la
+  libtalerfakebank.la \
+  libtalerbanktesting.la
 
 libtalerbank_la_LDFLAGS = \
   -version-info 1:0:0 \
@@ -41,7 +42,6 @@ libtalerbank_la_LIBADD = \
   -ljansson \
   $(XLIB)
 
-
 libtalerfakebank_la_LDFLAGS = \
   -version-info 0:0:0 \
   -no-undefined
@@ -57,6 +57,22 @@ libtalerfakebank_la_LIBADD = \
   -lmicrohttpd \
   $(XLIB)
 
+libtalerbanktesting_la_LDFLAGS = \
+  -version-info 0:0:0 \
+  -no-undefined
+
+libtalerbanktesting_la_SOURCES = \
+  testing_api_cmd_history.c \
+  testing_api_cmd_reject.c \
+  testing_api_helpers.c
+
+libtalerbanktesting_la_LIBADD = \
+  $(top_builddir)/src/json/libtalerjson.la \
+  -lgnunetjson \
+  -lgnunetutil \
+  -ljansson \
+  -lmicrohttpd \
+  $(XLIB)
 
 if HAVE_LIBCURL
 libtalerbank_la_LIBADD += -lcurl
@@ -68,7 +84,9 @@ endif
 
 check_PROGRAMS = \
   test_bank_api \
-  test_bank_api_with_fakebank
+  test_bank_api_new \
+  test_bank_api_with_fakebank \
+  test_bank_api_with_fakebank_new
 
 TESTS = \
   $(check_PROGRAMS)
@@ -84,6 +102,15 @@ test_bank_api_LDADD = \
   -lgnunetutil \
   -ljansson
 
+test_bank_api_new_SOURCES = \
+  test_bank_api_new.c
+
+test_bank_api_new_LDADD = \
+  $(top_builddir)/src/exchange-lib/libtalertesting.la \
+  libtalerbanktesting.la \
+  -ltalerexchange \
+  -lgnunetutil \
+  libtalerbank.la
 
 test_bank_api_with_fakebank_SOURCES = \
   test_bank_interpreter.c test_bank_interpreter.h \
@@ -96,5 +123,15 @@ test_bank_api_with_fakebank_LDADD = \
   -lgnunetutil \
   -ljansson
 
+test_bank_api_with_fakebank_new_SOURCES = \
+  test_bank_api_with_fakebank_new.c
+
+test_bank_api_with_fakebank_new_LDADD = \
+  $(top_builddir)/src/exchange-lib/libtalertesting.la \
+  libtalerbanktesting.la \
+  -ltalerexchange \
+  -lgnunetutil \
+  libtalerbank.la
+
 EXTRA_DIST = \
   bank.conf
diff --git a/src/bank-lib/bank.conf b/src/bank-lib/bank.conf
index 0610606c..f6e4e7fe 100644
--- a/src/bank-lib/bank.conf
+++ b/src/bank-lib/bank.conf
@@ -1,2 +1,8 @@
 [taler]
 currency = KUDOS
+
+[bank]
+http_port = 8081
+
+[exchange-wire-test]
+bank_url = http://localhost:8081/
diff --git a/src/bank-lib/test_bank_api_new.c b/src/bank-lib/test_bank_api_new.c
new file mode 100644
index 00000000..a43aa876
--- /dev/null
+++ b/src/bank-lib/test_bank_api_new.c
@@ -0,0 +1,185 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2016, 2017 GNUnet e.V.
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3, or (at your
+  option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not,
+  see <http://www.gnu.org/licenses/> 
+*/
+
+/**
+ * @file bank/test_bank_api_new.c
+ * @brief testcase to test bank's HTTP API
+ *        interface against the "real" bank
+ * @author Christian Grothoff
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_signatures.h"
+#include "taler_bank_service.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include <microhttpd.h>
+#include "taler_exchange_service.h"
+#include "test_bank_interpreter.h"
+#include "taler_testing_lib.h"
+#include "taler_testing_bank_lib.h"
+
+#define CONFIG_FILE "bank.conf"
+
+/**
+ * Bank process.
+ */
+struct GNUNET_OS_Process *bankd;
+
+/**
+ * Bank URL.
+ */
+char *bank_url;
+
+/**
+ * Main function that will tell the interpreter what commands to
+ * run.
+ *
+ * @param cls closure
+ */
+static void
+run (void *cls,
+     struct TALER_TESTING_Interpreter *is)
+{
+  
+  extern struct TALER_BANK_AuthenticationData AUTHS[];
+
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Bank serves at `%s'\n",
+              bank_url);
+
+  struct TALER_TESTING_Command commands[] = {
+
+    /**
+     * NOTE: this command uses internally the _fakebank_ version
+     * of the add-incoming command.  However, this does seem to
+     * work fine against the Python bank too!  Some renaming is
+     * required..
+     */
+    TALER_TESTING_cmd_bank_history ("history-0",
+                                    bank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH,
+                                    NULL,
+                                    5),
+
+    /* WARNING: old API has expected http response code among
+     * the parameters, although it was always set as '200 OK' */
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("deposit-1",
+       "KUDOS:5.01",
+       bank_url,
+       BANK_ACCOUNT_NUMBER,
+       EXCHANGE_ACCOUNT_NUMBER,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.password,
+       "subject 1",
+       "http://exchange.com/"),
+
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("deposit-2",
+       "KUDOS:5.01",
+       bank_url,
+       BANK_ACCOUNT_NUMBER,
+       EXCHANGE_ACCOUNT_NUMBER,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.password,
+       "subject 2",
+       "http://exchange.com/"),
+
+    TALER_TESTING_cmd_bank_history ("history-1c",
+                                    bank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_CREDIT,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_bank_history ("history-1d",
+                                    bank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_DEBIT,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_bank_history ("history-1dr",
+                                    bank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_DEBIT,
+                                    NULL,
+                                    -5),
+
+    TALER_TESTING_cmd_bank_history ("history-2fwd",
+                                    bank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_DEBIT,
+                                    "deposit-1",
+                                    5),
+
+    TALER_TESTING_cmd_bank_reject ("reject-1",
+                                   bank_url,
+                                   "deposit-1"),
+    /**
+     * End the suite.  Fixme: better to have a label for this
+     * too, as it shows a "(null)" token on logs.
+     */
+    TALER_TESTING_cmd_end ()
+  };
+
+  TALER_TESTING_run (is, commands);
+}
+
+
+/* Pacifies "make check" */
+int
+main(int argc,
+     char * const *argv)
+{
+  unsigned int ret;
+  /* These environment variables get in the way... */
+  unsetenv ("XDG_DATA_HOME");
+  unsetenv ("XDG_CONFIG_HOME");
+  GNUNET_log_setup ("test-bank-api-new", "DEBUG", NULL);
+
+  if (NULL ==
+    (bank_url = TALER_TESTING_prepare_bank (CONFIG_FILE)))
+    return 77;
+
+  if (NULL == (bankd =
+      TALER_TESTING_run_bank (CONFIG_FILE)))
+    return 1;
+  
+  ret = TALER_TESTING_setup (&run,
+                           NULL,
+                           CONFIG_FILE,
+                           NULL); // means no exchange.
+
+  GNUNET_OS_process_kill (bankd, SIGKILL); 
+  GNUNET_OS_process_wait (bankd); 
+  GNUNET_OS_process_destroy (bankd); 
+  GNUNET_free (bank_url);
+
+  if (GNUNET_OK == ret)
+    return 0;
+
+  return 1;
+}
+
+/* end of test_bank_api_new.c */
diff --git a/src/bank-lib/test_bank_api_with_fakebank_new.c b/src/bank-lib/test_bank_api_with_fakebank_new.c
new file mode 100644
index 00000000..a36251c5
--- /dev/null
+++ b/src/bank-lib/test_bank_api_with_fakebank_new.c
@@ -0,0 +1,223 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2016, 2017 GNUnet e.V.
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3,
+  or (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not,
+  see <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file bank/test_bank_api_with_fakebank.c
+ * @brief testcase to test bank's HTTP API
+ *        interface against the fakebank
+ * @author Marcello Stanisci
+ * @author Christian Grothoff
+ */
+
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_signatures.h"
+#include "taler_bank_service.h"
+#include "taler_exchange_service.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <gnunet/gnunet_curl_lib.h>
+#include <microhttpd.h>
+#include "test_bank_interpreter.h"
+#include "taler_testing_lib.h"
+#include "taler_testing_bank_lib.h"
+
+
+#define CONFIG_FILE "bank.conf"
+
+
+/**
+ * Fakebank URL.
+ */
+char *fakebank_url;
+
+/**
+ * Main function that will tell the interpreter what commands to
+ * run.
+ *
+ * @param cls closure
+ */
+static void
+run (void *cls,
+     struct TALER_TESTING_Interpreter *is)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Fakebank serves at `%s'\n",
+              fakebank_url);
+  extern struct TALER_BANK_AuthenticationData AUTHS[];
+
+  struct TALER_TESTING_Command commands[] = {
+
+    /**
+     * NOTE: this command uses internally the _fakebank_ version
+     * of the add-incoming command.  However, this does seem to
+     * work fine against the Python bank too!  Some renaming is
+     * required..
+     */
+    TALER_TESTING_cmd_bank_history ("history-0",
+                                    fakebank_url,
+                                    BANK_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH,
+                                    NULL,
+                                    1),
+
+
+    /* WARNING: old API has expected http response code among
+     * the parameters, although it was always set as '200 OK' */
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("debit-1",
+       "KUDOS:5.01",
+       fakebank_url,
+       EXCHANGE_ACCOUNT_NUMBER,
+       BANK_ACCOUNT_NUMBER,
+       AUTHS[EXCHANGE_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[EXCHANGE_ACCOUNT_NUMBER -1].details.basic.password,
+       "subject 1",
+       "http://exchange.com/"),
+
+    TALER_TESTING_cmd_bank_history ("history-1c",
+                                    fakebank_url,
+                                    BANK_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_CREDIT,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_bank_history ("history-1d",
+                                    fakebank_url,
+                                    BANK_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_DEBIT,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("debit-2",
+       "KUDOS:3.21",
+       fakebank_url,
+       EXCHANGE_ACCOUNT_NUMBER, // debit account.
+       USER_ACCOUNT_NUMBER,
+       AUTHS[EXCHANGE_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[EXCHANGE_ACCOUNT_NUMBER -1].details.basic.password,
+       "subject 2",
+       "http://exchange.org/"),
+
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("credit-2",
+       "KUDOS:3.22",
+       fakebank_url,
+       USER_ACCOUNT_NUMBER, // debit account.
+       EXCHANGE_ACCOUNT_NUMBER,
+       AUTHS[USER_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[USER_ACCOUNT_NUMBER -1].details.basic.password,
+       "credit 2",
+       "http://exchange.org/"),
+
+    TALER_TESTING_cmd_bank_history ("history-2b",
+                                    fakebank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_bank_history ("history-2bi",
+                                    fakebank_url,
+                                    EXCHANGE_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH,
+                                    "debit-1",
+                                    5),
+
+    TALER_TESTING_cmd_check_bank_transfer_with_ref ("expect-2d",
+                                                    "credit-2"),
+
+    TALER_TESTING_cmd_check_bank_transfer_with_ref ("expect-2c",
+                                                    "debit-2"),
+
+    TALER_TESTING_cmd_check_bank_transfer_with_ref ("expect-1",
+                                                    "debit-1"),
+
+    TALER_TESTING_cmd_check_bank_empty ("expect-empty"),
+
+    TALER_TESTING_cmd_fakebank_transfer_with_subject
+      ("credit-for-reject-1",
+       "KUDOS:5.01",
+       fakebank_url,
+       BANK_ACCOUNT_NUMBER,
+       EXCHANGE_ACCOUNT_NUMBER,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.username,
+       AUTHS[BANK_ACCOUNT_NUMBER -1].details.basic.password,
+       "subject 3",
+       "http://exchange.net/"),
+
+     TALER_TESTING_cmd_bank_reject ("reject-1",
+                                    fakebank_url,
+                                    "credit-for-reject-1"),
+
+    TALER_TESTING_cmd_bank_history ("history-r1",
+                                    fakebank_url,
+                                    BANK_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_bank_history ("history-r1c",
+                                    fakebank_url,
+                                    BANK_ACCOUNT_NUMBER,
+                                    TALER_BANK_DIRECTION_BOTH |
+                                    TALER_BANK_DIRECTION_CANCEL,
+                                    NULL,
+                                    5),
+
+    TALER_TESTING_cmd_check_bank_transfer_with_ref
+      ("expect-credit-reject-1",
+       "credit-for-reject-1"),
+
+    TALER_TESTING_cmd_check_bank_empty ("expect-empty-2"),
+
+    /**
+     * End the suite.  Fixme: better to have a label for this
+     * too, as it shows a "(null)" token on logs.
+     */
+    TALER_TESTING_cmd_end ()
+  };
+
+  TALER_TESTING_run_with_fakebank (is,
+                                   commands,
+                                   fakebank_url);
+}
+
+int
+main (int argc,
+      char * const *argv)
+{
+  /* These environment variables get in the way... */
+  unsetenv ("XDG_DATA_HOME");
+  unsetenv ("XDG_CONFIG_HOME");
+  GNUNET_log_setup ("test-merchant-api-with-fakebank-new",
+                    "DEBUG",
+                    NULL);
+  if (NULL ==
+    (fakebank_url = TALER_TESTING_prepare_fakebank (CONFIG_FILE)))
+    return 77;
+  
+  return (GNUNET_OK == TALER_TESTING_setup (&run,
+                                            NULL,
+                                            CONFIG_FILE,
+                                            NULL)) ? 0 : 1;
+}
+
+
+/* end of test_bank_api_with_fakebank_new.c */
diff --git a/src/bank-lib/testing_api_cmd_history.c b/src/bank-lib/testing_api_cmd_history.c
new file mode 100644
index 00000000..311c910d
--- /dev/null
+++ b/src/bank-lib/testing_api_cmd_history.c
@@ -0,0 +1,735 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3, or
+  (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file bank-lib/testing_api_cmd_history.c
+ * @brief command to check the /history API from the bank.
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_exchange_service.h"
+#include "taler_testing_lib.h"
+#include "taler_testing_bank_lib.h"
+#include "taler_fakebank_lib.h"
+#include "taler_bank_service.h"
+#include "taler_fakebank_lib.h"
+
+
+struct HistoryState
+{
+   const char *bank_url;
+
+   uint64_t account_no;
+
+   enum TALER_BANK_Direction direction;
+
+   const char *start_row_reference;
+
+   unsigned int num_results;
+
+   struct TALER_BANK_HistoryHandle *hh;
+
+   uint64_t results_obtained;
+
+   int failed;
+};
+
+/**
+ * Item in the transaction history, as reconstructed from the
+ * command history.
+ */
+struct History
+{
+
+  /**
+   * Wire details.
+   */
+  struct TALER_BANK_TransferDetails details;
+
+  /**
+   * Serial ID of the wire transfer.
+   */
+  uint64_t row_id;
+
+  /**
+   * Direction of the transfer.
+   */
+  enum TALER_BANK_Direction direction;
+
+};
+
+extern struct TALER_BANK_AuthenticationData AUTHS[];
+
+/**
+ * @param cls closure
+ * @param ret[out] result (could be anything)
+ * @param trait name of the trait
+ * @param selector more detailed information about which object
+ *                 to return in case there were multiple generated
+ *                 by the command
+ * @return #GNUNET_OK on success
+ */
+static int
+history_traits (void *cls,
+                void **ret,
+                const char *trait,
+                unsigned int index)
+{
+  /* Must define this function because some callbacks
+   * look for certain traits on _all_ the commands. */
+  return GNUNET_SYSERR;
+}
+
+/**
+ * Test if the /admin/add/incoming transaction at offset @a off
+ * has been /rejected.
+ *
+ * @param is interpreter state (where we are right now)
+ * @param off offset of the command to test for rejection
+ * @return #GNUNET_YES if the command at @a off was cancelled
+ */
+static int
+test_cancelled (struct TALER_TESTING_Interpreter *is,
+                unsigned int off)
+{
+  const char *rejected_reference; 
+
+  for (unsigned int i=0;i<is->ip;i++)
+  {
+    const struct TALER_TESTING_Command *c = &is->commands[i];
+
+    
+    #warning "Errors reported here are NOT fatal"
+    /* We use the exposure of a reference to a reject
+     * command as a signal to understand if the current
+     * command was cancelled; so errors about "reject traits"
+     * not found are NOT fatal here */
+
+    if (GNUNET_OK != TALER_TESTING_get_trait_rejected
+        (c, 0, &rejected_reference))
+      continue;
+    if (0 == strcmp (rejected_reference,
+                     TALER_TESTING_interpreter_get_current_label
+                       (is)))
+      return GNUNET_YES;
+  }
+  return GNUNET_NO;
+}
+
+/**
+ * Free history @a h of length @a h_len.
+ *
+ * @param h history array to free
+ * @param h_len number of entries in @a h
+ */
+static void
+free_history (struct History *h,
+              uint64_t h_len)
+{
+  for (uint64_t off = 0;off<h_len;off++)
+  {
+    GNUNET_free (h[off].details.wire_transfer_subject);
+    json_decref (h[off].details.account_details);
+  }
+  GNUNET_free_non_null (h);
+}
+
+/**
+ * Log which history we expected.
+ *
+ * @param h what we expected
+ * @param h_len number of entries in @a h
+ * @param off position of the missmatch
+ */
+static void
+print_expected (struct History *h,
+                uint64_t h_len,
+                unsigned int off)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+              "Transaction history missmatch at position %u/%llu\n",
+              off,
+              (unsigned long long) h_len);
+  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+              "Expected history:\n");
+  for (uint64_t i=0;i<h_len;i++)
+  {
+    char *acc;
+
+    acc = json_dumps (h[i].details.account_details,
+                      JSON_COMPACT);
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "H(%llu): %s%s (serial: %llu, subject: %s, to: %s)\n",
+                (unsigned long long) i,
+                (TALER_BANK_DIRECTION_CREDIT == h[i].direction) ? "+" : "-",
+                TALER_amount2s (&h[i].details.amount),
+                (unsigned long long) h[i].row_id,
+                h[i].details.wire_transfer_subject,
+                acc);
+    if (NULL != acc)
+      free (acc);
+  }
+}
+
+/**
+ * Build history of transactions matching the current
+ * command in @a is.
+ *
+ * @param is interpreter state
+ * @param[out] rh history array to initialize
+ * @return number of entries in @a rh
+ */
+static uint64_t
+build_history (struct TALER_TESTING_Interpreter *is,
+               struct History **rh)
+{
+  struct HistoryState *hs = is->commands[is->ip].cls;
+  uint64_t total;
+  struct History *h;
+  const struct TALER_TESTING_Command *add_incoming_cmd;
+  int inc;
+  unsigned int start;
+  unsigned int end;
+  int ok;
+  const uint64_t *row_id_start = NULL;
+
+  if (NULL != hs->start_row_reference)
+  {
+    TALER_LOG_INFO ("`%s': start row given via reference `%s'\n",
+                    TALER_TESTING_interpreter_get_current_label
+                      (is),
+                    hs->start_row_reference);
+    add_incoming_cmd = TALER_TESTING_interpreter_lookup_command
+      (is, hs->start_row_reference);
+    GNUNET_assert (NULL != add_incoming_cmd);
+    GNUNET_assert (GNUNET_OK == TALER_TESTING_get_trait_uint64
+      (add_incoming_cmd, 0, &row_id_start));
+  }
+
+  GNUNET_assert (0 != hs->num_results);
+  if (0 == is->ip)
+  {
+    *rh = NULL;
+    return 0;
+  }
+  if (hs->num_results > 0)
+  {
+    inc = 1;
+    start = 0;
+    end = is->ip - 1;
+  }
+  else
+  {
+    inc = -1;
+    start = is->ip - 1;
+    end = 0;
+  }
+
+  total = 0;
+  ok = GNUNET_NO;
+
+  if (NULL == row_id_start)
+    ok = GNUNET_YES;
+
+  for (unsigned int off = start;off != end + inc; off += inc)
+  {
+    const struct TALER_TESTING_Command *pos = &is->commands[off];
+    int cancelled;
+    const uint64_t *row_id;
+
+    /**
+     * Skip non-add_incoming commands, choose upon "do they
+     * offer row_id trait?".
+     */
+
+    if (GNUNET_OK != TALER_TESTING_get_trait_uint64
+        (pos, 0, &row_id))
+      continue;
+
+    if (NULL != row_id_start)
+    {
+      if (*row_id_start == *row_id)
+      {
+        /* Doesn't count, start is excluded from output. */
+        total = 0; 
+        ok = GNUNET_YES;
+        continue;
+      }
+    }
+    if (GNUNET_NO == ok)
+      continue; /* skip until we find the marker */
+    if (total >= hs->num_results * inc)
+      break; /* hit limit specified by command */
+
+    cancelled = test_cancelled (is, off);
+
+    if ( (GNUNET_YES == cancelled) &&
+         (0 == (hs->direction & TALER_BANK_DIRECTION_CANCEL)) )
+    {
+      TALER_LOG_INFO ("Ignoring canceled wire"
+                      " transfer from history\n");
+      continue;
+    }
+    
+    const uint64_t *credit_account_no;
+    const uint64_t *debit_account_no;
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT
+        (pos, &credit_account_no));
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_DEBIT_ACCOUNT
+        (pos, &debit_account_no));
+
+    TALER_LOG_INFO ("Potential history element:"
+                    " %llu->%llu; my account: %llu\n",
+                    *debit_account_no,
+                    *credit_account_no,
+                    hs->account_no);
+
+    if ( ( (0 != (hs->direction & TALER_BANK_DIRECTION_CREDIT)) &&
+           (hs->account_no == *credit_account_no)) ||
+         ( (0 != (hs->direction & TALER_BANK_DIRECTION_DEBIT)) &&
+           (hs->account_no == *debit_account_no)) )
+    {
+      TALER_LOG_INFO ("+1 my history\n");
+      total++; /* found matching record */
+    }
+  }
+  GNUNET_assert (GNUNET_YES == ok);
+  if (0 == total)
+  {
+    *rh = NULL;
+    return 0;
+  }
+  GNUNET_assert (total < UINT_MAX);
+  h = GNUNET_new_array ((unsigned int) total,
+                        struct History);
+  total = 0;
+  ok = GNUNET_NO;
+  if (NULL == row_id_start)
+    ok = GNUNET_YES;
+  for (unsigned int off = start;off != end + inc; off += inc)
+  {
+    const struct TALER_TESTING_Command *pos = &is->commands[off];
+    int cancelled;
+    const uint64_t *row_id;
+
+    if (GNUNET_OK != TALER_TESTING_GET_TRAIT_ROW_ID
+        (pos, &row_id))
+      continue;
+
+    if (NULL != row_id_start)
+    {
+
+      if (*row_id_start == *row_id)
+      { 
+        /* Doesn't count, start is excluded from output. */
+        total = 0; 
+        ok = GNUNET_YES;
+        continue;
+      }
+    }
+    if (GNUNET_NO == ok)
+    {
+      TALER_LOG_INFO ("Skip on `%s'\n",
+                      pos->label);
+      continue; /* skip until we find the marker */
+    }
+
+    if (total >= hs->num_results * inc)
+    {
+      TALER_LOG_INFO ("hit limit specified by command\n");
+      break;
+    }
+    const uint64_t *credit_account_no;
+    const uint64_t *debit_account_no;
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT
+        (pos, &credit_account_no));
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_DEBIT_ACCOUNT
+        (pos, &debit_account_no));
+
+    TALER_LOG_INFO ("Potential history bit:"
+                    " %llu->%llu; my account: %llu\n",
+                    *debit_account_no,
+                    *credit_account_no,
+                    hs->account_no);
+
+    if ( ( (0 != (hs->direction & TALER_BANK_DIRECTION_CREDIT)) &&
+           (hs->account_no == *credit_account_no)) &&
+         ( (0 != (hs->direction & TALER_BANK_DIRECTION_DEBIT)) &&
+           (hs->account_no == *debit_account_no)) )
+    {
+      GNUNET_break (0);
+      continue;
+    }
+
+    cancelled = test_cancelled (is, off);
+    if ( (GNUNET_YES == cancelled) &&
+         (0 == (hs->direction & TALER_BANK_DIRECTION_CANCEL)) )
+    {
+     TALER_LOG_WARNING ("`%s' was cancelled\n",
+                        TALER_TESTING_interpreter_get_current_label
+                          (is));
+     continue;
+    }
+
+    if ( (0 != (hs->direction & TALER_BANK_DIRECTION_CREDIT)) &&
+         (hs->account_no == *credit_account_no))
+    {
+      h[total].direction = TALER_BANK_DIRECTION_CREDIT;
+      if (GNUNET_YES == cancelled)
+        h[total].direction |= TALER_BANK_DIRECTION_CANCEL;
+      h[total].details.account_details
+        = json_pack ("{s:s, s:s, s:I}",
+                     "type",
+                     "test",
+                     "bank_url",
+                     hs->bank_url,
+                     "account_number",
+                     (json_int_t) *debit_account_no);
+      GNUNET_assert (NULL != h[total].details.account_details);
+    }
+    if ( (0 != (hs->direction & TALER_BANK_DIRECTION_DEBIT)) &&
+           (hs->account_no == *debit_account_no))
+    {
+      h[total].direction = TALER_BANK_DIRECTION_DEBIT;
+      if (GNUNET_YES == cancelled)
+        h[total].direction |= TALER_BANK_DIRECTION_CANCEL;
+      h[total].details.account_details
+        = json_pack ("{s:s, s:s, s:I}",
+                     "type",
+                     "test",
+                     "bank_url",
+                     hs->bank_url,
+                     "account_number",
+                     (json_int_t) *credit_account_no);
+      GNUNET_assert (NULL != h[total].details.account_details);
+    }
+    if ( ( (0 != (hs->direction & TALER_BANK_DIRECTION_CREDIT)) &&
+           (hs->account_no == *credit_account_no)) ||
+         ( (0 != (hs->direction & TALER_BANK_DIRECTION_DEBIT)) &&
+           (hs->account_no == *debit_account_no)) )
+    {
+      const struct TALER_Amount *amount;
+      const char *subject;
+      const char *exchange_url;
+
+      GNUNET_assert
+        (GNUNET_OK == TALER_TESTING_get_trait_amount_obj
+          (pos, 0, &amount));
+
+      GNUNET_assert
+        (GNUNET_OK == TALER_TESTING_get_trait_transfer_subject
+          (pos, 0, &subject));
+
+      GNUNET_assert (GNUNET_OK == TALER_TESTING_get_trait_url
+        (pos, 0, &exchange_url));
+
+      h[total].details.amount = *amount;
+
+      h[total].row_id = *row_id;
+      GNUNET_asprintf (&h[total].details.wire_transfer_subject,
+                       "%s %s",
+                       subject,
+                       exchange_url);
+      TALER_LOG_INFO ("+1-bit of my history\n");
+      total++;
+    }
+  }
+  *rh = h;
+  return total;
+}
+
+
+/**
+ * Compute how many results we expect to be returned for
+ * the history command at @a is.
+ *
+ * @param is the interpreter state to inspect
+ * @return number of results expected
+ */
+static uint64_t
+compute_result_count (struct TALER_TESTING_Interpreter *is)
+{
+  uint64_t total;
+  struct History *h;
+
+  total = build_history (is, &h);
+  free_history (h, total);
+  return total;
+}
+
+/**
+ * Check that @a dir and @a details are the transaction
+ * results we expect at offset @a off in the history of
+ * the current command executed by @a is
+ *
+ * @param is the interpreter state we are in
+ * @param off the offset of the result
+ * @param dir the direction of the transaction
+ * @param details the transaction details to check
+ * @return #GNUNET_OK if the transaction is what we expect
+ */
+static int
+check_result (struct TALER_TESTING_Interpreter *is,
+              unsigned int off,
+              enum TALER_BANK_Direction dir,
+              const struct TALER_BANK_TransferDetails *details)
+{
+  uint64_t total;
+  struct History *h;
+
+  total = build_history (is, &h);
+  if (off >= total)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Test says history has at most %u"
+                " results, but got result #%u to check\n",
+                (unsigned int) total,
+                off);
+    print_expected (h, total, off);
+    return GNUNET_SYSERR;
+  }
+  if (h[off].direction != dir)
+  {
+    GNUNET_break (0);
+    print_expected (h, total, off);
+    free_history (h,
+                  total);
+    return GNUNET_SYSERR;
+  }
+
+  if ( (0 != strcmp (h[off].details.wire_transfer_subject,
+                     details->wire_transfer_subject)) ||
+       (0 != TALER_amount_cmp (&h[off].details.amount,
+                               &details->amount)) ||
+       (1 != json_equal (h[off].details.account_details,
+                         details->account_details)) )
+  {
+    GNUNET_break (0);
+    print_expected (h, total, off);
+    free_history (h,
+                  total);
+    return GNUNET_SYSERR;
+  }
+  free_history (h,
+                total);
+  return GNUNET_OK;
+}
+
+/**
+ * Callbacks of this type are used to serve the result of asking
+ * the bank for the transaction history.
+ *
+ * @param cls closure
+ * @param http_status HTTP response code, #MHD_HTTP_OK (200)
+ *        for successful status request 0 if the bank's reply is
+ *        bogus (fails to follow the protocol),
+ *        #MHD_HTTP_NO_CONTENT if there are no more results; on
+ *        success the last callback is always of this status
+ *        (even if `abs(num_results)` were already returned).
+ * @param ec taler status code
+ * @param dir direction of the transfer
+ * @param row_id monotonically increasing counter corresponding to
+ *        the transaction
+ * @param details details about the wire transfer
+ * @param json detailed response from the HTTPD, or NULL if
+ *        reply was not in JSON
+ */
+static void
+history_cb (void *cls,
+            unsigned int http_status,
+            enum TALER_ErrorCode ec,
+            enum TALER_BANK_Direction dir,
+            uint64_t row_id,
+            const struct TALER_BANK_TransferDetails *details,
+            const json_t *json)
+{
+  struct TALER_TESTING_Interpreter *is = cls;
+  struct HistoryState *hs = is->commands[is->ip].cls;
+
+  if (MHD_HTTP_OK != http_status)
+  {
+    hs->hh = NULL;
+    if ( (hs->results_obtained != compute_result_count (is)) ||
+         (GNUNET_YES == hs->failed) )
+    {
+      uint64_t total;
+      struct History *h;
+
+      GNUNET_break (0);
+      total = build_history (is, &h);
+      GNUNET_log
+        (GNUNET_ERROR_TYPE_ERROR,
+         "Expected history of length %llu, got %llu;"
+         " HTTP status code: %u, failed: %d\n",
+         (unsigned long long) total,
+         (unsigned long long) hs->results_obtained,
+         http_status,
+         hs->failed);
+      print_expected (h, total, UINT_MAX);
+      free_history (h, total);
+      TALER_TESTING_interpreter_fail (is);
+      return;
+    }
+    TALER_TESTING_interpreter_next (is);
+    return;
+  }
+  if (GNUNET_OK != check_result (is,
+                                 hs->results_obtained,
+                                 dir,
+                                 details))
+  {
+    GNUNET_break (0);
+
+    {
+      char *acc;
+
+      acc = json_dumps (json,
+                        JSON_COMPACT);
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  "Result %u was `%s'\n",
+                  (unsigned int) hs->results_obtained,
+                  acc);
+      if (NULL != acc)
+        free (acc);
+    }
+
+    hs->failed = GNUNET_YES;
+    return;
+  }
+  hs->results_obtained++;
+}
+
+
+/**
+ * Run the command.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command to execute, a /wire one.
+ * @param is the interpreter state.
+ */
+void
+history_run (void *cls,
+             const struct TALER_TESTING_Command *cmd,
+             struct TALER_TESTING_Interpreter *is)
+{
+  struct HistoryState *hs = cls;
+  uint64_t row_id = UINT64_MAX;
+  const uint64_t *row_id_ptr = &row_id;
+  struct TALER_BANK_AuthenticationData *auth;
+
+  /* Get row_id from trait. */
+  if (NULL != hs->start_row_reference)
+  {
+    const struct TALER_TESTING_Command *history_cmd;
+    
+    history_cmd = TALER_TESTING_interpreter_lookup_command
+      (is, hs->start_row_reference);
+
+    if (NULL == history_cmd)
+      TALER_TESTING_FAIL (is);
+
+    if (GNUNET_OK != TALER_TESTING_get_trait_uint64
+        (history_cmd, 0, &row_id_ptr))
+      TALER_TESTING_FAIL (is);
+    row_id = *row_id_ptr;
+
+    TALER_LOG_DEBUG ("row id (from trait) is %llu\n", row_id);
+  
+  }
+
+  auth = &AUTHS[hs->account_no - 1];
+  hs->hh = TALER_BANK_history (is->ctx,
+                               hs->bank_url,
+                               auth,
+                               hs->account_no,
+                               hs->direction,
+                               row_id,
+                               hs->num_results,
+                               &history_cb,
+                               is);
+  GNUNET_assert (NULL != hs->hh);
+}
+
+
+/**
+ * Cleanup the state.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command which is being cleaned up.
+ */
+void
+history_cleanup
+  (void *cls,
+   const struct TALER_TESTING_Command *cmd)
+{
+  struct HistoryState *hs = cls;
+
+  if (NULL != hs->hh)
+  {
+    TALER_LOG_WARNING ("/history did not complete\n");
+    TALER_BANK_history_cancel (hs->hh);
+  }
+
+  GNUNET_free (hs);
+}
+
+
+/**
+ * Test /history API from the bank.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_bank_history
+  (const char *label,
+   const char *bank_url,
+   uint64_t account_no,
+   enum TALER_BANK_Direction direction,
+   const char *start_row_reference,
+   unsigned int num_results)
+{
+  struct HistoryState *hs;
+  struct TALER_TESTING_Command cmd;
+
+  hs = GNUNET_new (struct HistoryState);
+  hs->bank_url = bank_url;
+  hs->account_no = account_no;
+  hs->direction = direction;
+  hs->start_row_reference = start_row_reference;
+  hs->num_results = num_results;
+
+  cmd.label = label;
+  cmd.cls = hs;
+  cmd.run = &history_run;
+  cmd.cleanup = &history_cleanup;
+  cmd.traits = &history_traits;
+
+  return cmd;
+}
+
+/* end of testing_api_cmd_history.c */
diff --git a/src/bank-lib/testing_api_cmd_reject.c b/src/bank-lib/testing_api_cmd_reject.c
new file mode 100644
index 00000000..63869954
--- /dev/null
+++ b/src/bank-lib/testing_api_cmd_reject.c
@@ -0,0 +1,164 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3, or
+  (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file bank-lib/testing_api_cmd_reject.c
+ * @brief command to check the /reject API from the bank.
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_exchange_service.h"
+#include "taler_testing_lib.h"
+#include "taler_fakebank_lib.h"
+#include "taler_bank_service.h"
+#include "taler_fakebank_lib.h"
+
+struct RejectState
+{
+  struct TALER_BANK_RejectHandle *rh;
+
+  const char *deposit_reference;
+
+  const char *bank_url;
+};
+
+/**
+ * Callbacks of this type are used to serve the result
+ * of asking the bank to reject an incoming wire transfer.
+ *
+ * @param cls closure
+ * @param http_status HTTP response code, #MHD_HTTP_NO_CONTENT
+ *        (204) for successful status request; #MHD_HTTP_NOT_FOUND
+ *        if the rowid is unknown; 0 if the bank's reply is bogus
+ *        (fails to follow the protocol),
+ * @param ec detailed error code
+ */
+static void
+reject_cb (void *cls,
+           unsigned int http_status,
+           enum TALER_ErrorCode ec)
+{
+  struct TALER_TESTING_Interpreter *is = cls;
+  struct RejectState *rs = is->commands[is->ip].cls;
+
+  rs->rh = NULL;
+  if (MHD_HTTP_NO_CONTENT != http_status)
+  {
+    GNUNET_break (0);
+    fprintf (stderr,
+             "Unexpected response code %u:\n",
+             http_status);
+    TALER_TESTING_interpreter_fail (is);
+    return;
+  }
+  TALER_TESTING_interpreter_next (is);
+}
+
+/**
+ * Cleanup the state.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command which is being cleaned up.
+ */
+void
+reject_cleanup
+  (void *cls,
+   const struct TALER_TESTING_Command *cmd)
+{
+  struct RejectState *rs = cls;
+
+  if (NULL != rs->rh)
+  {
+    TALER_LOG_WARNING ("/reject did not complete\n");
+    TALER_BANK_reject_cancel (rs->rh);
+  }
+
+  GNUNET_free (rs);
+}
+
+/**
+ * Run the command.
+ *
+ * @param cls closure, typically a #struct WireState.
+ * @param cmd the command to execute, a /wire one.
+ * @param is the interpreter state.
+ */
+void
+reject_run (void *cls,
+             const struct TALER_TESTING_Command *cmd,
+             struct TALER_TESTING_Interpreter *is)
+{
+  struct RejectState *rs = cls;
+  const struct TALER_TESTING_Command *deposit_cmd;
+  const uint64_t *credit_account;
+  const uint64_t *row_id;
+  extern struct TALER_BANK_AuthenticationData *AUTHS;
+
+  deposit_cmd = TALER_TESTING_interpreter_lookup_command
+    (is, rs->deposit_reference);
+
+  if (NULL != deposit_cmd)
+    TALER_TESTING_FAIL (is);
+
+  GNUNET_assert
+    (GNUNET_OK == TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT
+      (deposit_cmd, &credit_account));
+
+  GNUNET_assert
+    (GNUNET_OK == TALER_TESTING_GET_TRAIT_ROW_ID
+      (deposit_cmd, &row_id));
+
+  rs->rh = TALER_BANK_reject (is->ctx,
+                              rs->bank_url,
+                              &AUTHS[*credit_account -1],
+                              *credit_account,
+                              *row_id,
+                              &reject_cb,
+                              is);
+  GNUNET_assert (NULL != rs->rh);
+}
+
+
+/**
+ * FIXME.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_bank_reject (const char *label,
+                               const char *bank_url,
+                               const char *deposit_reference)
+{
+  struct RejectState *rs;
+  struct TALER_TESTING_Command cmd;
+
+  rs = GNUNET_new (struct RejectState);
+  rs->bank_url = bank_url;
+  rs->deposit_reference = deposit_reference;
+  
+  cmd.cls = rs;
+  cmd.run = &reject_run;
+  cmd.cleanup = &reject_cleanup;
+
+  return cmd;
+
+}
+
+/* end of testing_api_cmd_reject.c */
diff --git a/src/bank-lib/testing_api_helpers.c b/src/bank-lib/testing_api_helpers.c
new file mode 100644
index 00000000..8446f958
--- /dev/null
+++ b/src/bank-lib/testing_api_helpers.c
@@ -0,0 +1,205 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3, or
+  (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file bank-lib/testing_api_helpers.c
+ * @brief convenience functions for bank-lib tests.
+ * @author Marcello Stanisci
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_testing_bank_lib.h"
+
+/* Keeps each bank account credential at bank account number - 1 */
+struct TALER_BANK_AuthenticationData AUTHS[] = {
+
+  /* Bank credentials */
+  {.method = TALER_BANK_AUTH_BASIC,
+   .details.basic.username = BANK_USERNAME,
+   .details.basic.password = BANK_PASSWORD},
+
+  /* Exchange credentials */
+  {.method = TALER_BANK_AUTH_BASIC,
+   .details.basic.username = EXCHANGE_USERNAME,
+   .details.basic.password = EXCHANGE_PASSWORD },
+
+  /* User credentials */
+  {.method = TALER_BANK_AUTH_BASIC,
+   .details.basic.username = USER_USERNAME,
+   .details.basic.password = USER_PASSWORD } 
+};
+
+/**
+ * Start the (Python) bank process.  Assume the port
+ * is available and the database is clean.  Use the "prepare
+ * bank" function to do such tasks.
+ *
+ * @param config_filename configuration filename.
+ *
+ * @return the process, or NULL if the process could not
+ *         be started.
+ */
+struct GNUNET_OS_Process *
+TALER_TESTING_run_bank (const char *config_filename)
+{
+
+  struct GNUNET_OS_Process *bank_proc;
+  unsigned int iter;
+
+  bank_proc = GNUNET_OS_start_process
+    (GNUNET_NO,
+     GNUNET_OS_INHERIT_STD_ALL,
+     NULL, NULL, NULL,
+     "taler-bank-manage",
+     "taler-bank-manage",
+     "-c", config_filename,
+     "--with-db=postgres:///talercheck",
+     "serve-http", NULL);
+  if (NULL == bank_proc)
+    BANK_FAIL ();
+
+  /* give child time to start and bind against the socket */
+  fprintf (stderr,
+           "Waiting for `taler-bank-manage' to be ready");
+  iter = 0;
+  do
+    {
+      if (10 == iter)
+      {
+	fprintf (
+          stderr,
+	  "Failed to launch `taler-bank-manage' (or `wget')\n");
+	GNUNET_OS_process_kill (bank_proc,
+				SIGTERM);
+	GNUNET_OS_process_wait (bank_proc);
+	GNUNET_OS_process_destroy (bank_proc);
+	BANK_FAIL ();
+      }
+      fprintf (stderr, ".");
+      sleep (1);
+      iter++;
+    }
+                                   /*FIXME: no hardcode port*/
+  while (0 != system ("wget -q -t 1 -T 1 http://127.0.0.1:8081/" \
+                      " -o /dev/null -O /dev/null"));
+  fprintf (stderr, "\n");
+
+  return bank_proc;
+
+}
+
+/**
+ * Prepare the bank execution.  Check if the port is available
+ * (and reset database?).
+ *
+ * @param config_filename configuration filename.
+ *
+ * @return the base url, or NULL upon errors.  Must be freed
+ *         by the caller.
+ */
+char *
+TALER_TESTING_prepare_bank (const char *config_filename)
+{
+  struct GNUNET_CONFIGURATION_Handle *cfg;
+  unsigned long long port;
+  struct GNUNET_OS_Process *dbreset_proc;
+  enum GNUNET_OS_ProcessStatusType type;
+  unsigned long code;
+  char *base_url;
+
+  cfg = GNUNET_CONFIGURATION_create ();
+
+  if (GNUNET_OK != GNUNET_CONFIGURATION_load (cfg, config_filename))
+    BANK_FAIL ();
+
+  if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number
+    (cfg, "bank",
+     "HTTP_PORT", &port))
+  {
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+                               "bank",
+                               "HTTP_PORT");
+    GNUNET_CONFIGURATION_destroy (cfg);
+    BANK_FAIL ();
+  }
+  GNUNET_CONFIGURATION_destroy (cfg);
+
+  if (GNUNET_OK != GNUNET_NETWORK_test_port_free
+    (IPPROTO_TCP, (uint16_t) port))
+  {
+    fprintf (stderr,
+             "Required port %llu not available, skipping.\n",
+	     port);
+    BANK_FAIL ();
+  }
+
+  /* DB preparation */
+  if (NULL ==
+     (dbreset_proc = GNUNET_OS_start_process (
+       GNUNET_NO,
+       GNUNET_OS_INHERIT_STD_ALL,
+       NULL, NULL, NULL,
+       "taler-bank-manage",
+       "taler-bank-manage",
+       "-c", "bank.conf",
+       "--with-db=postgres:///talercheck", /*FIXME: no hardcoded*/
+       "django",
+       "flush",
+       "--no-input", NULL)))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Failed to flush the bank db.\n");
+    BANK_FAIL ();
+  }
+
+  if (GNUNET_SYSERR ==
+      GNUNET_OS_process_wait_status (dbreset_proc,
+                                     &type,
+                                     &code))
+  {
+    GNUNET_OS_process_destroy (dbreset_proc);
+    BANK_FAIL ();
+  }
+  if ( (type == GNUNET_OS_PROCESS_EXITED) &&
+       (0 != code) )
+  {
+    fprintf (stderr,
+             "Failed to setup database\n");
+    BANK_FAIL ();
+  }
+  if ( (type != GNUNET_OS_PROCESS_EXITED) ||
+       (0 != code) )
+  {
+    fprintf (stderr,
+             "Unexpected error running"
+             " `taler-bank-manage django flush..'!\n");
+    BANK_FAIL ();
+  }
+
+  GNUNET_OS_process_destroy (dbreset_proc);
+
+  GNUNET_asprintf (&base_url,
+                   "http://localhost:%llu/",
+                   port);
+  return base_url;
+}
+
+
+/* end of testing_api_helpers.c */
diff --git a/src/exchange-lib/testing_api_cmd_bank_check.c b/src/exchange-lib/testing_api_cmd_bank_check.c
index 8c4ee2c4..9af156f9 100644
--- a/src/exchange-lib/testing_api_cmd_bank_check.c
+++ b/src/exchange-lib/testing_api_cmd_bank_check.c
@@ -47,12 +47,12 @@ struct BankCheckState
   /**
    * Expected account number that gave money
    */
-  unsigned int debit_account;
+  uint64_t debit_account;
  
   /**
    * Expected account number that received money
    */
-  unsigned int credit_account;
+  uint64_t credit_account;
 
   /**
    * Wire transfer subject (set by fakebank-lib).
@@ -69,6 +69,11 @@ struct BankCheckState
    * Interpreter state.
    */
   struct TALER_TESTING_Interpreter *is;
+
+  /**
+   * FIXME.
+   */
+  const char *deposit_reference;
 };
 
 /**
@@ -84,26 +89,72 @@ check_bank_transfer_run (void *cls,
                          struct TALER_TESTING_Interpreter *is)
 {
   struct BankCheckState *bcs = cls;
+
   struct TALER_Amount amount;
+  const uint64_t *debit_account;
+  const uint64_t *credit_account;
+  const char *exchange_base_url;
 
 
-  if (GNUNET_OK !=
-      TALER_string_to_amount (bcs->amount,
-                              &amount))
+  if (NULL == bcs->deposit_reference)
   {
-    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                "Failed to parse amount `%s' at %u\n",
-                bcs->amount,
-                is->ip);
-    TALER_TESTING_interpreter_fail (is);
-    return;
+    debit_account = &bcs->debit_account;
+    credit_account = &bcs->credit_account;
+    exchange_base_url = bcs->exchange_base_url;
+
+    if (GNUNET_OK !=
+        TALER_string_to_amount (bcs->amount,
+                                &amount))
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                  "Failed to parse amount `%s' at %u\n",
+                  bcs->amount,
+                  is->ip);
+      TALER_TESTING_interpreter_fail (is);
+      return;
+    }
+  }
+
+  if (NULL != bcs->deposit_reference)
+  {
+    const struct TALER_TESTING_Command *deposit_cmd;
+    const struct TALER_Amount *amount_ptr;
+
+    TALER_LOG_INFO ("`%s' uses reference (%s)\n",
+                    TALER_TESTING_interpreter_get_current_label
+                      (is),
+                    bcs->deposit_reference);
+    deposit_cmd = TALER_TESTING_interpreter_lookup_command
+      (is, bcs->deposit_reference);
+
+    if (NULL == deposit_cmd)
+      TALER_TESTING_FAIL (is);
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_get_trait_amount_obj
+        (deposit_cmd, 0, &amount_ptr));
+    amount = *amount_ptr;
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_DEBIT_ACCOUNT
+        (deposit_cmd, &debit_account));
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT
+        (deposit_cmd, &credit_account));
+
+    GNUNET_assert
+      (GNUNET_OK == TALER_TESTING_get_trait_url
+        (deposit_cmd, 0, &exchange_base_url)); // check 0 works!
+
   }
+
   if (GNUNET_OK !=
       TALER_FAKEBANK_check (is->fakebank,
                             &amount,
-                            bcs->debit_account,
-                            bcs->credit_account,
-                            bcs->exchange_base_url,
+                            *debit_account,
+                            *credit_account,
+                            exchange_base_url,
                             &bcs->subject))
   {
     GNUNET_break (0);
@@ -189,8 +240,8 @@ TALER_TESTING_cmd_check_bank_transfer
   (const char *label,
    const char *exchange_base_url,
    const char *amount,
-   unsigned int debit_account,
-   unsigned int credit_account)
+   uint64_t debit_account,
+   uint64_t credit_account)
 {
   struct BankCheckState *bcs;
   struct TALER_TESTING_Command cmd;
@@ -205,7 +256,6 @@ TALER_TESTING_cmd_check_bank_transfer
   cmd.cls = bcs;
   cmd.run = &check_bank_transfer_run;
   cmd.cleanup = &check_bank_transfer_cleanup;
-  // traits?
   cmd.traits = &check_bank_transfer_traits;
 
   return cmd;
@@ -265,3 +315,27 @@ TALER_TESTING_cmd_check_bank_empty (const char *label)
   
   return cmd;
 }
+
+
+/**
+ * FIXME.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_check_bank_transfer_with_ref
+  (const char *label,
+   const char *deposit_reference)
+{
+
+  struct BankCheckState *bcs;
+  struct TALER_TESTING_Command cmd;
+
+  bcs = GNUNET_new (struct BankCheckState);
+  bcs->deposit_reference = deposit_reference;
+  cmd.label = label;
+  cmd.cls = bcs;
+  cmd.run = &check_bank_transfer_run;
+  cmd.cleanup = &check_bank_transfer_cleanup;
+  cmd.traits = &check_bank_transfer_traits;
+
+  return cmd;
+}
diff --git a/src/exchange-lib/testing_api_cmd_fakebank_transfer.c b/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
index 7da4bf09..a8bad860 100644
--- a/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
+++ b/src/exchange-lib/testing_api_cmd_fakebank_transfer.c
@@ -31,6 +31,7 @@
 #include "taler_fakebank_lib.h"
 #include "taler_signatures.h"
 #include "taler_testing_lib.h"
+#include "taler_testing_bank_lib.h"
 
 /**
  *
@@ -348,17 +349,19 @@ fakebank_transfer_traits (void *cls,
 {
   struct FakebankTransferState *fts = cls;
   struct TALER_TESTING_Trait traits[] = {
-    TALER_TESTING_make_trait_reserve_priv (0,
-                                           &fts->reserve_priv),
+    TALER_TESTING_make_trait_reserve_priv
+      (0, &fts->reserve_priv),
+    TALER_TESTING_MAKE_TRAIT_DEBIT_ACCOUNT
+      (&fts->debit_account_no),
+    TALER_TESTING_MAKE_TRAIT_CREDIT_ACCOUNT
+      (&fts->credit_account_no),
+    TALER_TESTING_make_trait_url (0, fts->exchange_url),
+    TALER_TESTING_make_trait_transfer_subject (0, fts->subject),
+    TALER_TESTING_MAKE_TRAIT_ROW_ID (&fts->serial_id),
+    TALER_TESTING_make_trait_amount_obj (0, &fts->amount),
     TALER_TESTING_trait_end ()
   };
 
-  if (NULL != fts->subject)
-  {
-    GNUNET_break (0);
-    /* we do NOT create a reserve private key */
-    return GNUNET_SYSERR; 
-  }
   return TALER_TESTING_get_trait (traits,
                                   ret,
                                   trait,
diff --git a/src/exchange-lib/testing_api_cmd_track.c b/src/exchange-lib/testing_api_cmd_track.c
index 40894872..8c289ed5 100644
--- a/src/exchange-lib/testing_api_cmd_track.c
+++ b/src/exchange-lib/testing_api_cmd_track.c
@@ -198,7 +198,7 @@ deposit_wtid_cb
         return;
       }
 
-      char *transfer_subject;
+      const char *transfer_subject;
 
       if (GNUNET_OK != TALER_TESTING_get_trait_transfer_subject
         (bank_transfer_cmd, 0, &transfer_subject))
diff --git a/src/exchange-lib/testing_api_helpers.c b/src/exchange-lib/testing_api_helpers.c
index b6e1e989..690c222c 100644
--- a/src/exchange-lib/testing_api_helpers.c
+++ b/src/exchange-lib/testing_api_helpers.c
@@ -431,9 +431,8 @@ TALER_TESTING_prepare_fakebank (const char *config_filename)
   char *fakebank_url;
 
   cfg = GNUNET_CONFIGURATION_create ();
-  if (GNUNET_OK !=
-      GNUNET_CONFIGURATION_load (cfg,
-                                 config_filename))
+  if (GNUNET_OK != GNUNET_CONFIGURATION_load (cfg,
+                                              config_filename))
     return NULL;
   if (GNUNET_OK !=
       GNUNET_CONFIGURATION_get_value_string (cfg,
diff --git a/src/exchange-lib/testing_api_loop.c b/src/exchange-lib/testing_api_loop.c
index 2bbf46ac..78ae3611 100644
--- a/src/exchange-lib/testing_api_loop.c
+++ b/src/exchange-lib/testing_api_loop.c
@@ -504,6 +504,22 @@ cert_cb (void *cls,
                             main_ctx->is);
 }
 
+/**
+ * Initialize scheduler loop and curl context for the testcase,
+ * and responsible to run the "run" method.
+ *
+ * @param cls closure, typically the "run" method, the
+ *        interpreter state and a closure for "run".
+ */
+static void
+main_wrapper_exchange_agnostic (void *cls)
+{
+  struct MainContext *main_ctx = cls;
+
+  main_ctx->main_cb (main_ctx->main_cb_cls,
+                     main_ctx->is);
+}
+
 
 /**
  * Initialize scheduler loop and curl context for the testcase,
@@ -513,7 +529,7 @@ cert_cb (void *cls,
  *        interpreter state and a closure for "run".
  */
 static void
-main_wrapper (void *cls)
+main_wrapper_exchange_connect (void *cls)
 {
   struct MainContext *main_ctx = cls;
   struct TALER_TESTING_Interpreter *is = main_ctx->is;
@@ -542,11 +558,6 @@ main_wrapper (void *cls)
                    "http://localhost:%llu/",
                    exchange_port);
 
-  is->ctx = GNUNET_CURL_init
-    (&GNUNET_CURL_gnunet_scheduler_reschedule, &is->rc);
-  GNUNET_assert (NULL != is->ctx);
-  is->rc = GNUNET_CURL_gnunet_rc_create (is->ctx);
-
   GNUNET_assert ( NULL !=
     (is->exchange = TALER_EXCHANGE_connect (is->ctx,
                                             exchange_url,
@@ -568,7 +579,8 @@ main_wrapper (void *cls)
  * @param exchanged exchange process handle: will be put in the
  *        state as some commands - e.g. revoke - need to send
  *        signal to it, for example to let it know to reload the
- *        key state..
+ *        key state.. if NULL, the interpreter will run without
+ *        trying to connect to the exchange first.
  *
  * @return FIXME: not sure what 'is.result' is at this stage.
  */
@@ -585,10 +597,7 @@ TALER_TESTING_setup (TALER_TESTING_Main main_cb,
     /* needed to init the curl ctx */
     .is = &is,
     /* needed to read values like exchange port
-     * number and construct the exchange url.  The
-     * port number _could_ have been passed here, but
-     * we prefer to stay "general" as other values might
-     * need to be passed around in the future. */
+     * number to construct the exchange url.*/
     .config_filename = config_filename
   };
   struct GNUNET_SIGNAL_Context *shc_chld;
@@ -602,16 +611,26 @@ TALER_TESTING_setup (TALER_TESTING_Main main_cb,
   GNUNET_assert (NULL != sigpipe);
   shc_chld = GNUNET_SIGNAL_handler_install
     (GNUNET_SIGCHLD, &sighandler_child_death);
+
+  is.ctx = GNUNET_CURL_init
+    (&GNUNET_CURL_gnunet_scheduler_reschedule, &is.rc);
+  GNUNET_assert (NULL != is.ctx);
+  is.rc = GNUNET_CURL_gnunet_rc_create (is.ctx);
+
   /* Blocking */
-  GNUNET_SCHEDULER_run (&main_wrapper,
-                        &main_ctx);
+
+  if (NULL != exchanged)
+    GNUNET_SCHEDULER_run (&main_wrapper_exchange_connect,
+                          &main_ctx);
+  else
+     GNUNET_SCHEDULER_run (&main_wrapper_exchange_agnostic,
+                           &main_ctx);
+
   GNUNET_SIGNAL_handler_uninstall (shc_chld);
   GNUNET_DISK_pipe_close (sigpipe);
   sigpipe = NULL;
 
-  /*FIXME: ?? */
   return is.result;
 }
 
-
 /* end of testing_api_loop.c */
diff --git a/src/exchange-lib/testing_api_trait_amount.c b/src/exchange-lib/testing_api_trait_amount.c
index a9c5b3bc..f21ec870 100644
--- a/src/exchange-lib/testing_api_trait_amount.c
+++ b/src/exchange-lib/testing_api_trait_amount.c
@@ -45,7 +45,7 @@ int
 TALER_TESTING_get_trait_amount_obj (
   const struct TALER_TESTING_Command *cmd,
   unsigned int index,
-  struct TALER_Amount **amount)
+  const struct TALER_Amount **amount)
 {
   return cmd->traits (cmd->cls,
                       (void **) amount,
diff --git a/src/exchange-lib/testing_api_trait_number.c b/src/exchange-lib/testing_api_trait_number.c
index 8f011dca..4db88792 100644
--- a/src/exchange-lib/testing_api_trait_number.c
+++ b/src/exchange-lib/testing_api_trait_number.c
@@ -29,7 +29,8 @@
 #include "taler_signatures.h"
 #include "taler_testing_lib.h"
 
-#define TALER_TESTING_TRAIT_NUMBER "number"
+#define TALER_TESTING_TRAIT_UINT "uint"
+#define TALER_TESTING_TRAIT_UINT64 "uint-64"
 
 /**
  * Obtain a "number" value from @a cmd.
@@ -48,7 +49,7 @@ TALER_TESTING_get_trait_uint
 {
   return cmd->traits (cmd->cls,
                       (void **) n,
-                      TALER_TESTING_TRAIT_NUMBER,
+                      TALER_TESTING_TRAIT_UINT,
                       index);
 }
 
@@ -65,10 +66,52 @@ TALER_TESTING_make_trait_uint
 {
   struct TALER_TESTING_Trait ret = {
     .index = index,
-    .trait_name = TALER_TESTING_TRAIT_NUMBER,
+    .trait_name = TALER_TESTING_TRAIT_UINT,
     .ptr = (const void *) n
   };
   return ret;
 }
 
+/**
+ * Obtain a "number" value from @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on
+ * offer
+ * @param n[out] set to the number coming from @a cmd.
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_uint64
+  (const struct TALER_TESTING_Command *cmd,
+   unsigned int index,
+   const uint64_t **n)
+{
+  return cmd->traits (cmd->cls,
+                      (void **) n,
+                      TALER_TESTING_TRAIT_UINT64,
+                      index);
+}
+
+/**
+ * @param selector associate the object with this "tag"
+ * @param n which object should be returned
+ *
+ * @return the trait, to be put in the traits array of the command
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_uint64
+  (unsigned int index,
+   const uint64_t *n)
+{
+  struct TALER_TESTING_Trait ret = {
+    .index = index,
+    .trait_name = TALER_TESTING_TRAIT_UINT64,
+    .ptr = (const void *) n
+  };
+  return ret;
+}
+
+
+
 /* end of testing_api_trait_number.c */
diff --git a/src/exchange-lib/testing_api_trait_string.c b/src/exchange-lib/testing_api_trait_string.c
index 0675d5a8..1b1b4221 100644
--- a/src/exchange-lib/testing_api_trait_string.c
+++ b/src/exchange-lib/testing_api_trait_string.c
@@ -36,6 +36,7 @@
 #define TALER_TESTING_TRAIT_AMOUNT "amount"
 #define TALER_TESTING_TRAIT_URL "url"
 #define TALER_TESTING_TRAIT_ORDER_ID "order-id"
+#define TALER_TESTING_TRAIT_REJECTED "rejected"
 
 /**
  * Obtain contract terms from @a cmd.
@@ -135,7 +136,7 @@ int
 TALER_TESTING_get_trait_transfer_subject
   (const struct TALER_TESTING_Command *cmd,
    unsigned int index,
-   char **transfer_subject)
+   const char **transfer_subject)
 {
   return cmd->traits (cmd->cls,
                       (void **) transfer_subject,
@@ -154,7 +155,7 @@ TALER_TESTING_get_trait_transfer_subject
 struct TALER_TESTING_Trait
 TALER_TESTING_make_trait_transfer_subject
   (unsigned int index,
-   char *transfer_subject)
+   const char *transfer_subject)
 {
   struct TALER_TESTING_Trait ret = {
     .index = index,
@@ -293,5 +294,50 @@ TALER_TESTING_make_trait_order_id
   return ret;
 }
 
+/**
+ * Obtain the reference from a bank transfer which has
+ * been rejected.
+ *
+ * @param cmd command to extract trait from
+ * @param index which reference is to be picked, in case
+ *        multiple are offered.
+ * @param rejected_reference[out] where to write the order id.
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_rejected
+  (const struct TALER_TESTING_Command *cmd,
+   unsigned int index,
+   const char **rejected_reference)
+{
+  return cmd->traits (cmd->cls,
+                      (void **) rejected_reference,
+                      TALER_TESTING_TRAIT_REJECTED,
+                      index);
+}
+
+/**
+ * Offer reference to a bank transfer which has been
+ * rejected.
+ *
+ * @param index which reference is to be picked, in case
+ *        multiple are offered.
+ * @param rejected_reference the url to offer
+ * @return the trait, to be put in the traits array of the command
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_rejected
+  (unsigned int index,
+   const char *rejected)
+{
+  struct TALER_TESTING_Trait ret = {
+    .index = index,
+    .trait_name = TALER_TESTING_TRAIT_REJECTED,
+    .ptr = (const void *) rejected 
+  };
+  return ret;
+}
+
+
 
 /* end of testing_api_trait_string.c */
diff --git a/src/include/Makefile.am b/src/include/Makefile.am
index 6583ad52..2916a812 100644
--- a/src/include/Makefile.am
+++ b/src/include/Makefile.am
@@ -28,7 +28,8 @@ talerinclude_HEADERS = \
   taler_pq_lib.h \
   taler_signatures.h \
   taler_wire_lib.h \
-  taler_wire_plugin.h
+  taler_wire_plugin.h \
+  taler_testing_bank_lib.h
 
 endif
 
diff --git a/src/include/taler_testing_bank_lib.h b/src/include/taler_testing_bank_lib.h
new file mode 100644
index 00000000..87187a73
--- /dev/null
+++ b/src/include/taler_testing_bank_lib.h
@@ -0,0 +1,108 @@
+/*
+  This file is part of TALER
+  (C) 2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3, or
+  (at your option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file include/taler_testing_bank_lib.h
+ * @brief API for writing an interpreter to test Taler components
+ * @author Marcello Stanisci
+ */
+#ifndef TALER_TESTING_BANK_LIB_H
+#define TALER_TESTING_BANK_LIB_H
+
+#include "taler_util.h"
+#include <gnunet/gnunet_json_lib.h>
+#include "taler_json_lib.h"
+#include <microhttpd.h>
+#include "taler_bank_service.h"
+#include "taler_testing_lib.h"
+
+
+/* ******** Credentials to log in at the bank ******* */
+
+#define BANK_ACCOUNT_NUMBER 1
+#define BANK_USERNAME "Bank"
+#define BANK_PASSWORD "x"
+#define EXCHANGE_ACCOUNT_NUMBER 2
+#define EXCHANGE_USERNAME "Exchange"
+#define EXCHANGE_PASSWORD "x"
+#define USER_ACCOUNT_NUMBER 3
+#define USER_USERNAME "user3"
+#define USER_PASSWORD "pass3"
+
+
+/* ********************* Helper functions ********************* */
+
+#define BANK_FAIL() \
+  do {GNUNET_break (0); return NULL; } while (0)
+
+/**
+ * Start the (Python) bank process.  Assume the port
+ * is available and the database is clean.  Use the "prepare
+ * bank" function to do such tasks.
+ *
+ * @param config_filename configuration filename.
+ *
+ * @return the process, or NULL if the process could not
+ *         be started.
+ */
+struct GNUNET_OS_Process *
+TALER_TESTING_run_bank (const char *config_filename);
+
+/**
+ * Prepare the bank execution.  Check if the port is available
+ * (and reset database?).
+ *
+ * @param config_filename configuration filename.
+ *
+ * @return the base url, or NULL upon errors.  Must be freed
+ *         by the caller.
+ */
+char *
+TALER_TESTING_prepare_bank (const char *config_filename);
+
+
+/* ******************* Generic interpreter logic ************ */
+
+/* ************** Specific interpreter commands ************ */
+
+/**
+ * Test /history API from the bank.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_bank_history
+  (const char *label,
+   const char *bank_url,
+   uint64_t account_no,
+   enum TALER_BANK_Direction direction,
+   const char *start_row_reference,
+   unsigned int num_results);
+
+/**
+ * FIXME.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_bank_reject (const char *label,
+                               const char *bank_url,
+                               const char *deposit_reference);
+
+/* *** Generic trait logic for implementing traits ********* */
+
+/* ****** Specific traits supported by this component ******* */
+
+#endif
diff --git a/src/include/taler_testing_lib.h b/src/include/taler_testing_lib.h
index b4350e0c..d06105dd 100644
--- a/src/include/taler_testing_lib.h
+++ b/src/include/taler_testing_lib.h
@@ -27,6 +27,7 @@
 #define TALER_TESTING_LIB_H
 
 #include "taler_util.h"
+#include "taler_exchange_service.h"
 #include <gnunet/gnunet_json_lib.h>
 #include "taler_json_lib.h"
 #include <microhttpd.h>
@@ -35,6 +36,37 @@
 /* ********************* Helper functions ********************* */
 
 /**
+ * Print failing line number and trigger shutdown.  Useful
+ * quite any time after the command "run" method has been called.
+ */
+#define TALER_TESTING_FAIL(is) \
+  do \
+  {\
+    GNUNET_break (0); \
+    TALER_TESTING_interpreter_fail (is); \
+    return; \
+  } while (0)
+
+
+#define TALER_TESTING_GET_TRAIT_CREDIT_ACCOUNT(cmd,out) \
+  TALER_TESTING_get_trait_uint64 (cmd, 0, out)
+
+#define TALER_TESTING_MAKE_TRAIT_CREDIT_ACCOUNT(data) \
+  TALER_TESTING_make_trait_uint64 (0, data)
+
+#define TALER_TESTING_GET_TRAIT_DEBIT_ACCOUNT(cmd,out) \
+  TALER_TESTING_get_trait_uint64 (cmd, 1, out)
+
+#define TALER_TESTING_MAKE_TRAIT_DEBIT_ACCOUNT(data) \
+  TALER_TESTING_make_trait_uint64 (1, data)
+
+#define TALER_TESTING_GET_TRAIT_ROW_ID(cmd,out) \
+  TALER_TESTING_get_trait_uint64 (cmd, 3, out)
+
+#define TALER_TESTING_MAKE_TRAIT_ROW_ID(data) \
+  TALER_TESTING_make_trait_uint64 (3, data)
+
+/**
  * Allocate and return a piece of wire-details.  Mostly, it adds
  * the bank_url to the JSON.
  *
@@ -747,8 +779,16 @@ TALER_TESTING_cmd_check_bank_transfer
   (const char *label,
    const char *exchange_base_url,
    const char *amount,
-   unsigned int debit_account,
-   unsigned int credit_account);
+   uint64_t debit_account,
+   uint64_t credit_account);
+
+/**
+ * FIXME.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_check_bank_transfer_with_ref
+  (const char *label,
+   const char *deposit_reference);
 
 /**
  * Check bank's balance is zero.
@@ -1017,6 +1057,33 @@ TALER_TESTING_make_trait_denom_sig
   (unsigned int index,
    const struct TALER_DenominationSignature *sig);
 
+
+/**
+ * @param selector associate the object with this "tag"
+ * @param i which object should be returned
+ *
+ * @return the trait, to be put in the traits array of the command
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_uint64
+  (unsigned int index,
+   const uint64_t *i);
+
+/**
+ * Obtain a "number" value from @a cmd.
+ *
+ * @param cmd command to extract trait from
+ * @param selector which coin to pick if @a cmd has multiple on
+ * offer
+ * @param n[out] set to the number coming from @a cmd.
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_uint64
+  (const struct TALER_TESTING_Command *cmd,
+   unsigned int index,
+   const uint64_t **n);
+
 /**
  * @param selector associate the object with this "tag"
  * @param i which object should be returned
@@ -1225,7 +1292,7 @@ int
 TALER_TESTING_get_trait_transfer_subject
   (const struct TALER_TESTING_Command *cmd,
    unsigned int index,
-   char **transfer_subject);
+   const char **transfer_subject);
 
 
 /**
@@ -1239,7 +1306,7 @@ TALER_TESTING_get_trait_transfer_subject
 struct TALER_TESTING_Trait
 TALER_TESTING_make_trait_transfer_subject
   (unsigned int index,
-   char *transfer_subject);
+   const char *transfer_subject);
 
 
 /**
@@ -1369,11 +1436,42 @@ int
 TALER_TESTING_get_trait_amount_obj (
   const struct TALER_TESTING_Command *cmd,
   unsigned int index,
-  struct TALER_Amount **amount);
+  const struct TALER_Amount **amount);
 
 
 struct TALER_TESTING_Trait
 TALER_TESTING_make_trait_amount_obj (
   unsigned int index,
   const struct TALER_Amount *amount);
+
+/**
+ * Offer reference to a bank transfer which has been
+ * rejected.
+ *
+ * @param index which reference is to be picked, in case
+ *        multiple are offered.
+ * @param rejected_reference the url to offer
+ * @return the trait, to be put in the traits array of the command
+ */
+struct TALER_TESTING_Trait
+TALER_TESTING_make_trait_rejected
+  (unsigned int index,
+   const char *rejected);
+
+/**
+ * Obtain the reference from a bank transfer which has
+ * been rejected.
+ *
+ * @param cmd command to extract trait from
+ * @param index which reference is to be picked, in case
+ *        multiple are offered.
+ * @param rejected_reference[out] where to write the order id.
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_TESTING_get_trait_rejected
+  (const struct TALER_TESTING_Command *cmd,
+   unsigned int index,
+   const char **rejected_reference);
+
 #endif