vasprintf-gnu: Add tests.

* tests/test-vasprintf-gnu.c: New file, based on tests/test-vasprintf-posix.c and tests/test-vasnprintf-gnu.c. * modules/vasprintf-gnu-tests: New file, based on modules/vasprintf-posix-tests.
2025-08-08 17:22:05 +03:00 · 2023-03-24 11:29:58 +01:00
parent 891708e6f2
commit fa8e2b3669
3 changed files with 293 additions and 0 deletions
--- a/6
+++ b/6
@@ -1,5 +1,11 @@
 2023-03-24  Bruno Haible  <bruno@clisp.org>

+	vasprintf-gnu: Add tests.
+	* tests/test-vasprintf-gnu.c: New file, based on
+	tests/test-vasprintf-posix.c and tests/test-vasnprintf-gnu.c.
+	* modules/vasprintf-gnu-tests: New file, based on
+	modules/vasprintf-posix-tests.
+
 	vasprintf-gnu: New module.
 	* m4/vasprintf-posix.m4 (gl_FUNC_VASPRINTF_IS_POSIX): New macro,
 	extracted from gl_FUNC_VASPRINTF_POSIX.
--- a/modules/vasprintf-gnu-tests
+++ b/modules/vasprintf-gnu-tests
@@ -0,0 +1,12 @@
+Files:
+tests/test-vasprintf-gnu.c
+tests/macros.h
+
+Depends-on:
+vasprintf-posix-tests
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-vasprintf-gnu
+check_PROGRAMS += test-vasprintf-gnu
--- a/tests/test-vasprintf-gnu.c
+++ b/tests/test-vasprintf-gnu.c
@@ -0,0 +1,275 @@
+/* Test of POSIX and GNU compatible vasprintf() and asprintf() functions.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
+
+   This program 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 of the License, or
+   (at your option) any later version.
+
+   This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
+
+#include <config.h>
+
+#include <stdio.h>
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "macros.h"
+
+static void
+test_function (int (*my_asprintf) (char **, const char *, ...))
+{
+  /* Test the support of the 'b' conversion specifier for binary output of
+     integers.  */
+
+  { /* Zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%b %d", 0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* A large positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%b %d", 0xFFFFFFFEU, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "11111111111111111111111111111110 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "      11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width given as argument.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%*b %d", 20, 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "      11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Negative width given as argument (cf. FLAG_LEFT below).  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%*b %d", -20, 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "11000000111001       33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Zero precision and a positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Zero precision and a zero number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%.0b %d", 0, 33, 44, 55);
+    ASSERT (result != NULL);
+    /* ISO C and POSIX specify that "The result of converting a zero value
+       with a precision of zero is no characters."  */
+    ASSERT (strcmp (result, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Width and precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%25.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "     00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* Padding and precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%025.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
+       a width and a precision are both present.  But implementations do so.  */
+    ASSERT (strcmp (result, "     00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_LEFT.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%-20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "11000000111001       33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with zero.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#b %d", 0, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0b11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number and width.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "    0b11000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number and padding.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%0#20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0b000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number and precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%0#.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0b00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number and width and precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#25.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "   0b00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a positive number and padding and precision.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%0#25.20b %d", 12345, 33, 44, 55);
+    ASSERT (result != NULL);
+    /* Neither ISO C nor POSIX specify that the '0' flag is ignored when
+       a width and a precision are both present.  But implementations do so.  */
+    ASSERT (strcmp (result, "   0b00000011000000111001 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+
+  { /* FLAG_ALT with a zero precision and a zero number.  */
+    char *result;
+    int retval =
+      my_asprintf (&result, "%#.0b %d", 0, 33, 44, 55);
+    ASSERT (result != NULL);
+    /* ISO C and POSIX specify that "The result of converting a zero value
+       with a precision of zero is no characters.", and the prefix is added
+       only for non-zero values.  */
+    ASSERT (strcmp (result, " 33") == 0);
+    ASSERT (retval == strlen (result));
+    free (result);
+  }
+}
+
+static int
+my_asprintf (char **result, const char *format, ...)
+{
+  va_list args;
+  int ret;
+
+  va_start (args, format);
+  ret = vasprintf (result, format, args);
+  va_end (args);
+  return ret;
+}
+
+static void
+test_vasprintf ()
+{
+  test_function (my_asprintf);
+}
+
+static void
+test_asprintf ()
+{
+  test_function (asprintf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  test_vasprintf ();
+  test_asprintf ();
+  return 0;
+}