starting with tests for libtalerutil

src/include/taler_amount_lib.h

@@ -100,7 +100,7 @@ struct TALER_Amount
 
 
 /**
- * Parse denomination description, in the format "T : V : F".
+ * Parse denomination description, in the format "T:V.F".
  *
  * @param str denomination description
  * @param denom denomination to write the result to

src/include/taler_crypto_lib.h

@@ -489,5 +489,6 @@ TALER_refresh_link_encrypted_decode (const char *buf,
                                      size_t buf_len);
 
 
+/* FIXME: should also have _encode API... */
 
 #endif

src/include/taler_json_lib.h

@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014 Christian Grothoff (and other contributing authors)
+  Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors)
 
   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

src/util/Makefile.am

@@ -28,14 +28,40 @@ libtalerutil_la_LDFLAGS = \
   -export-dynamic -no-undefined
 
 TESTS = \
- test-json-validations
+ test_amount \
+ test_crypto \
+ test_json \
+ test_wireformats
 
-check_PROGRAMS=\
- test-json-validations
+check_PROGRAMS= \
+ test_amount \
+ test_crypto \
+ test_json \
+ test_wireformats
 
-test_json_validations_SOURCES = \
-  test_json_validations.c
-test_json_validations_LDADD = \
+
+test_amount_SOURCES = \
+  test_amount.c
+test_amount_LDADD = \
+  -lgnunetutil \
+  libtalerutil.la
+
+test_crypto_SOURCES = \
+  test_crypto.c
+test_crypto_LDADD = \
+  -lgnunetutil \
+  libtalerutil.la
+
+test_json_SOURCES = \
+  test_json.c
+test_json_LDADD = \
+  -lgnunetutil \
+  -ljansson \
+  libtalerutil.la
+
+test_wireformats_SOURCES = \
+  test_wireformats.c
+test_wireformats_LDADD = \
   -lgnunetutil \
   -ljansson \
   libtalerutil.la

src/util/amount.c

@@ -19,12 +19,7 @@
  * @author Sree Harsha Totakura <sreeharsha@totakura.in>
  * @author Florian Dold
  * @author Benedikt Mueller
- *
- * TODO:
- * - the way this library currently deals with underflow/overflow
- *   is insufficient; just going for UINT32_MAX on overflow
- *   will not do; similar issues for incompatible currencies;
- *   we need some more explicit logic to say 'bogus value',
+ * @author Christian Grothoff
  */
 #include "platform.h"
 #include "taler_util.h"
@@ -91,14 +86,14 @@ TALER_string_to_amount (const char *str,
     {
       return GNUNET_OK;
     }
-    if ( (str[i] < '0') || (str[i] > '9') )
+    if ( (value[i] < '0') || (value[i] > '9') )
     {
       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                   "Invalid character `%c'\n",
-                  str[i]);
+                  value[i]);
       goto fail;
     }
-    n = str[i] - '0';
+    n = value[i] - '0';
     if (denom->value * 10 + n < denom->value)
     {
       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
@@ -113,29 +108,29 @@ TALER_string_to_amount (const char *str,
   i++;
 
   /* parse fraction */
-  if ('\0' == str[i])
+  if ('\0' == value[i])
   {
     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                "Null after dot");
+                "Null after dot\n");
     goto fail;
   }
   b = TALER_AMOUNT_FRAC_BASE / 10;
-  while ('\0' != str[i])
+  while ('\0' != value[i])
   {
     if (0 == b)
     {
       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                  "Fractional value too small (only %u digits supported)",
+                  "Fractional value too small (only %u digits supported)\n",
                   (unsigned int) TALER_AMOUNT_FRAC_LEN);
       goto fail;
     }
-    if ( (str[i] < '0') || (str[i] > '9') )
+    if ( (value[i] < '0') || (value[i] > '9') )
     {
       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                  "Error after comma");
+                  "Error after dot\n");
       goto fail;
     }
-    n = str[i] - '0';
+    n = value[i] - '0';
     denom->fraction += n * b;
     b /= 10;
     i++;
@@ -258,8 +253,8 @@ TALER_amount_cmp_currency (const struct TALER_Amount *a1,
   if ( (GNUNET_NO == test_valid (a1)) ||
        (GNUNET_NO == test_valid (a2)) )
     return GNUNET_SYSERR;
-  if (0 == strcmp (a1->currency,
-                   a2->currency))
+  if (0 == strcasecmp (a1->currency,
+		       a2->currency))
     return GNUNET_YES;
   return GNUNET_NO;
 }
@@ -286,8 +281,10 @@ TALER_amount_cmp (const struct TALER_Amount *a1,
                  TALER_amount_cmp_currency (a1, a2));
   n1 = *a1;
   n2 = *a2;
-  TALER_amount_normalize (&n1);
-  TALER_amount_normalize (&n2);
+  GNUNET_assert (GNUNET_SYSERR !=
+		 TALER_amount_normalize (&n1));
+  GNUNET_assert (GNUNET_SYSERR !=
+		 TALER_amount_normalize (&n2));
   if (n1.value == n2.value)
   {
     if (n1.fraction < n2.fraction)
@@ -329,8 +326,12 @@ TALER_amount_subtract (struct TALER_Amount *diff,
   }
   n1 = *a1;
   n2 = *a2;
-  TALER_amount_normalize (&n1);
-  TALER_amount_normalize (&n2);
+  if ( (GNUNET_SYSERR == TALER_amount_normalize (&n1)) ||
+       (GNUNET_SYSERR == TALER_amount_normalize (&n2)) )
+  {
+    invalidate (diff);
+    return GNUNET_SYSERR;
+  }
 
   if (n1.fraction < n2.fraction)
   {
@@ -377,6 +378,7 @@ TALER_amount_add (struct TALER_Amount *sum,
 {
   struct TALER_Amount n1;
   struct TALER_Amount n2;
+  struct TALER_Amount res;
 
   if (GNUNET_YES !=
       TALER_amount_cmp_currency (a1, a2))
@@ -386,27 +388,32 @@ TALER_amount_add (struct TALER_Amount *sum,
   }
   n1 = *a1;
   n2 = *a2;
-  TALER_amount_normalize (&n1);
-  TALER_amount_normalize (&n2);
+  if ( (GNUNET_SYSERR == TALER_amount_normalize (&n1)) ||
+       (GNUNET_SYSERR == TALER_amount_normalize (&n2)) )
+  {
+    invalidate (sum);
+    return GNUNET_SYSERR;
+  }
 
   GNUNET_assert (GNUNET_OK ==
                  TALER_amount_get_zero (a1->currency,
-                                        sum));
-  sum->value = n1.value + n2.value;
-  if (sum->value < n1.value)
+                                        &res));
+  res.value = n1.value + n2.value;
+  if (res.value < n1.value)
   {
     /* integer overflow */
     invalidate (sum);
     return GNUNET_SYSERR;
   }
-  sum->fraction = n1.fraction + n2.fraction;
+  res.fraction = n1.fraction + n2.fraction;
   if (GNUNET_SYSERR ==
-      TALER_amount_normalize (sum))
+      TALER_amount_normalize (&res))
   {
     /* integer overflow via carry from fraction */
     invalidate (sum);
     return GNUNET_SYSERR;
   }
+  *sum = res;
   return GNUNET_OK;
 }
 
@@ -438,6 +445,7 @@ TALER_amount_normalize (struct TALER_Amount *amount)
   {
     /* failed to normalize, adding up fractions caused
        main value to overflow! */
+    invalidate (amount);
     return GNUNET_SYSERR;
   }
   return ret;

src/util/test_amount.c

@@ -0,0 +1,190 @@
+/*
+  This file is part of TALER
+  (C) 2015 Christian Grothoff (and other contributing authors)
+
+  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 util/test_amount.c
+ * @brief Tests for amount logic
+ * @author Christian Grothoff <christian@grothoff.org>
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_amount_lib.h"
+
+
+int
+main(int argc,
+     const char *const argv[])
+{
+  struct TALER_Amount a1;
+  struct TALER_Amount a2;
+  struct TALER_Amount a3;
+  char *c;
+
+  GNUNET_log_setup ("test-amout",
+		    "WARNING",
+		    NULL);
+  /* test invalid conversions */
+  GNUNET_log_skip (6, GNUNET_NO);
+  /* non-numeric */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount ("EUR:4a",
+					 &a1));
+  /* non-numeric */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount ("EUR:4.4a",
+					 &a1));
+  /* non-numeric */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount ("EUR:4.a4",
+					 &a1));
+  /* no currency */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount (":4.a4",
+					 &a1));
+  /* precision too high */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount ("EUR:4.1234567",
+					 &a1));
+  /* value too big */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_string_to_amount ("EUR:1234567890123456789012345678901234567890123456789012345678901234567890",
+					 &a1));
+  GNUNET_log_skip (0, GNUNET_YES);
+
+  /* test conversion without fraction */
+  GNUNET_assert (GNUNET_OK ==
+		 TALER_string_to_amount ("EUR:4",
+					 &a1));
+  GNUNET_assert (0 == strcasecmp ("EUR",
+				  a1.currency));
+  GNUNET_assert (4 == a1.value);
+  GNUNET_assert (0 == a1.fraction);
+
+  /* test conversion with leading space and with fraction */
+  GNUNET_assert (GNUNET_OK ==
+		 TALER_string_to_amount (" eur:4.12",
+					 &a2));
+  GNUNET_assert (0 == strcasecmp ("eur",
+				  a2.currency));
+  GNUNET_assert (4 == a2.value);
+  GNUNET_assert (TALER_AMOUNT_FRAC_BASE / 100 * 12 == a2.fraction);
+
+  /* test use of local currency */
+  GNUNET_assert (GNUNET_OK ==
+		 TALER_string_to_amount (" *LOCAL:4444.1000",
+					 &a3));
+  GNUNET_assert (0 == strcasecmp ("*LOCAL",
+				  a3.currency));
+  GNUNET_assert (4444 == a3.value);
+  GNUNET_assert (TALER_AMOUNT_FRAC_BASE / 10 == a3.fraction);
+
+  /* test CMP with equal and unequal currencies */
+  GNUNET_assert (GNUNET_NO ==
+		 TALER_amount_cmp_currency (&a1,
+					    &a3));
+  GNUNET_assert (GNUNET_YES ==
+		 TALER_amount_cmp_currency (&a1,
+					    &a2));
+
+  /* test subtraction failure (currency missmatch) */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_subtract (&a3,
+					&a3,
+					&a2));
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_normalize (&a3));
+
+  /* test subtraction failure (negative result) */
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_subtract (&a3,
+					&a1,
+					&a2));
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_normalize (&a3));
+
+  /* test subtraction success cases */
+  GNUNET_assert (GNUNET_YES ==
+		 TALER_amount_subtract (&a3,
+					&a2,
+					&a1));
+  GNUNET_assert (GNUNET_NO ==
+		 TALER_amount_subtract (&a3,
+					&a1,
+					&a1));
+  GNUNET_assert (0 == a3.value);
+  GNUNET_assert (0 == a3.fraction);
+  GNUNET_assert (GNUNET_NO ==
+		 TALER_amount_normalize (&a3));
+
+  /* test addition success */
+  GNUNET_assert (GNUNET_OK ==
+		 TALER_amount_add (&a3,
+				   &a3,
+				   &a2));
+  GNUNET_assert (GNUNET_NO ==
+		 TALER_amount_normalize (&a3));
+
+  /* test normalization */
+  a3.fraction = 2 * TALER_AMOUNT_FRAC_BASE;
+  a3.value = 4;
+  GNUNET_assert (GNUNET_YES ==
+		 TALER_amount_normalize (&a3));
+
+  /* test conversion to string */
+  c = TALER_amount_to_string (&a3);
+  GNUNET_assert (0 == strcmp ("EUR:6",
+			      c));
+  GNUNET_free (c);
+
+  /* test normalization with fraction overflow */
+  a3.fraction = 2 * TALER_AMOUNT_FRAC_BASE + 1;
+  a3.value = 4;
+  GNUNET_assert (GNUNET_YES ==
+		 TALER_amount_normalize (&a3));
+  c = TALER_amount_to_string (&a3);
+  GNUNET_assert (0 == strcmp ("EUR:6.000001",
+			      c));
+  GNUNET_free (c);
+
+  /* test normalization with overflow */
+  a3.fraction = 2 * TALER_AMOUNT_FRAC_BASE + 1;
+  a3.value = UINT64_MAX - 1;
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_normalize (&a3));
+  c = TALER_amount_to_string (&a3);
+  GNUNET_assert (NULL == c);
+
+  /* test addition with overflow */
+  a1.fraction = TALER_AMOUNT_FRAC_BASE - 1;
+  a1.value = UINT64_MAX - 5;
+  a2.fraction = 2;
+  a2.value = 5;
+  GNUNET_assert (GNUNET_SYSERR ==
+		 TALER_amount_add (&a3, &a1, &a2));
+
+  /* test addition with underflow on fraction */
+  a1.fraction = 1;
+  a1.value = UINT64_MAX;
+  a2.fraction = 2;
+  a2.value = 0;
+  GNUNET_assert (GNUNET_OK ==
+		 TALER_amount_subtract (&a3, &a1, &a2));
+  GNUNET_assert (UINT64_MAX - 1 == a3.value);
+  GNUNET_assert (TALER_AMOUNT_FRAC_BASE - 1 == a3.fraction);
+  return 0;
+}
+
+/* end of test_amount.c */

src/util/test_crypto.c

@@ -0,0 +1,38 @@
+/*
+  This file is part of TALER
+  (C) 2015 Christian Grothoff (and other contributing authors)
+
+  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 util/test_crypto.c
+ * @brief Tests for Taler-specific crypto logic
+ * @author Christian Grothoff <christian@grothoff.org>
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_crypto_lib.h"
+
+
+int
+main(int argc,
+     const char *const argv[])
+{
+  GNUNET_log_setup ("test-crypto",
+		    "WARNING",
+		    NULL);
+  /* FIXME: implement test... */
+  return 0;
+}
+
+/* end of test_crypto.c */

src/util/test_json.c

@@ -0,0 +1,38 @@
+/*
+  This file is part of TALER
+  (C) 2015 Christian Grothoff (and other contributing authors)
+
+  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 util/test_json.c
+ * @brief Tests for Taler-specific crypto logic
+ * @author Christian Grothoff <christian@grothoff.org>
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_json_lib.h"
+
+
+int
+main(int argc,
+     const char *const argv[])
+{
+  GNUNET_log_setup ("test-json",
+		    "WARNING",
+		    NULL);
+  /* FIXME: implement test... */
+  return 0;
+}
+
+/* end of test_json.c */