refactoring exchangedb tests to improve coverage

src/exchangedb/test_exchangedb_signkeys.c

@@ -0,0 +1,96 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2016 Inria & 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, If not, see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchangedb/test_exchangedb_signkeys.c
+ * @brief test cases for some functions in exchangedb/exchangedb_signkeys.c
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "gnunet/gnunet_util_lib.h"
+#include "taler_signatures.h"
+#include "taler_exchangedb_lib.h"
+
+
+#define EXITIF(cond)                                              \
+  do {                                                            \
+    if (cond) { GNUNET_break (0); goto EXITIF_exit; }             \
+  } while (0)
+
+
+/**
+ * @brief Iterator over signing keys.
+ *
+ * @param cls closure
+ * @param filename name of the file the key came from
+ * @param ski the sign key
+ * @return #GNUNET_OK to continue to iterate,
+ *  #GNUNET_NO to stop iteration with no error,
+ *  #GNUNET_SYSERR to abort iteration with error!
+ */
+static int
+ski_iter (void *cls,
+          const char *filename,
+          const struct TALER_EXCHANGEDB_PrivateSigningKeyInformationP *ski)
+{
+  const struct TALER_EXCHANGEDB_PrivateSigningKeyInformationP *exp = cls;
+
+  if (0 != memcmp (ski,
+                   exp,
+                   sizeof (struct TALER_EXCHANGEDB_PrivateSigningKeyInformationP)))
+  {
+    GNUNET_break (0);
+    return GNUNET_SYSERR;
+  }
+  return GNUNET_OK;
+}
+
+
+int
+main (int argc,
+      const char *const argv[])
+{
+  struct TALER_EXCHANGEDB_PrivateSigningKeyInformationP ski;
+  struct GNUNET_TIME_Absolute now;
+  char *tmpfile;
+  int ret;
+
+  ret = 1;
+  tmpfile = NULL;
+  GNUNET_log_setup ("test-exchangedb-signkeys",
+                    "WARNING",
+                    NULL);
+  GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
+                              &ski,
+                              sizeof (struct TALER_EXCHANGEDB_PrivateSigningKeyInformationP));
+  now = GNUNET_TIME_absolute_get ();
+  EXITIF (NULL == (tmpfile = GNUNET_DISK_mkdtemp ("test_exchangedb_ski")));
+  EXITIF (GNUNET_OK !=
+          TALER_EXCHANGEDB_signing_key_write (tmpfile,
+                                              now,
+                                              &ski));
+  EXITIF (1 !=
+          TALER_EXCHANGEDB_signing_keys_iterate (tmpfile,
+                                                 &ski_iter,
+                                                 &ski));
+  ret = 0;
+ EXITIF_exit:
+  if (NULL != tmpfile)
+  {
+    (void) unlink (tmpfile);
+    GNUNET_free (tmpfile);
+  }
+  return ret;
+}