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tests: Add tests for g_file_set_contents_full()
These exercise all the code paths I can manage without adding a load of machinery to inject faults into `write()`. Signed-off-by: Philip Withnall <withnall@endlessm.com> Helps: #1302
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Philip Withnall
parent
f35f9e918a
commit
5bf3849099
@ -950,6 +950,257 @@ test_set_contents (void)
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g_free (name);
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}
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static void
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test_set_contents_full (void)
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{
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GFileSetContentsFlags flags_mask =
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G_FILE_SET_CONTENTS_ONLY_EXISTING |
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G_FILE_SET_CONTENTS_DURABLE |
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G_FILE_SET_CONTENTS_CONSISTENT;
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gint flags;
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const struct
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{
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enum
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{
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EXISTING_FILE_NONE,
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EXISTING_FILE_REGULAR,
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#ifndef G_OS_WIN32
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EXISTING_FILE_SYMLINK,
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#endif
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EXISTING_FILE_DIRECTORY,
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}
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existing_file;
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int new_mode; /* only relevant if @existing_file is %EXISTING_FILE_NONE */
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gboolean use_strlen;
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gboolean expected_success;
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GFileError expected_error;
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}
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tests[] =
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{
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{ EXISTING_FILE_NONE, 0644, FALSE, TRUE, 0 },
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{ EXISTING_FILE_NONE, 0644, TRUE, TRUE, 0 },
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{ EXISTING_FILE_NONE, 0600, FALSE, TRUE, 0 },
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{ EXISTING_FILE_REGULAR, 0644, FALSE, TRUE, 0 },
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#ifndef G_OS_WIN32
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{ EXISTING_FILE_SYMLINK, 0644, FALSE, TRUE, 0 },
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#endif
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{ EXISTING_FILE_DIRECTORY, 0644, FALSE, FALSE, G_FILE_ERROR_ISDIR },
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};
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gsize i;
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g_test_summary ("Test g_file_set_contents_full() with various flags");
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for (flags = 0; flags < (gint) flags_mask; flags++)
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{
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for (i = 0; i < G_N_ELEMENTS (tests); i++)
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{
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GError *error = NULL;
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gchar *file_name = NULL, *link_name = NULL, *dir_name = NULL;
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const gchar *set_contents_name;
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gchar *buf = NULL;
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gsize len;
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gboolean ret;
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GStatBuf statbuf;
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g_test_message ("Flags %d and test %" G_GSIZE_FORMAT, flags, i);
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switch (tests[i].existing_file)
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{
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case EXISTING_FILE_REGULAR:
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#ifndef G_OS_WIN32
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case EXISTING_FILE_SYMLINK:
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#endif
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{
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gint fd;
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fd = g_file_open_tmp (NULL, &file_name, &error);
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g_assert_no_error (error);
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write (fd, "a", 1);
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g_assert_no_errno (g_fsync (fd));
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close (fd);
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#ifndef G_OS_WIN32
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/* Pass an existing symlink to g_file_set_contents_full() to see
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* what it does. */
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if (tests[i].existing_file == EXISTING_FILE_SYMLINK)
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{
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link_name = g_strconcat (file_name, ".link", NULL);
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g_assert_no_errno (symlink (file_name, link_name));
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set_contents_name = link_name;
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}
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else
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#endif /* !G_OS_WIN32 */
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{
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set_contents_name = file_name;
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}
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break;
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}
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case EXISTING_FILE_DIRECTORY:
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{
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dir_name = g_dir_make_tmp ("glib-fileutils-set-contents-full-XXXXXX", &error);
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g_assert_no_error (error);
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set_contents_name = dir_name;
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break;
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}
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case EXISTING_FILE_NONE:
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{
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file_name = g_build_filename (g_get_tmp_dir (), "glib-file-set-contents-full-test", NULL);
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g_remove (file_name);
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g_assert_false (g_file_test (file_name, G_FILE_TEST_EXISTS));
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set_contents_name = file_name;
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break;
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}
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default:
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{
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g_assert_not_reached ();
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}
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}
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/* Set the file contents */
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ret = g_file_set_contents_full (set_contents_name, "b",
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tests[i].use_strlen ? -1 : 1,
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flags, tests[i].new_mode, &error);
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if (!tests[i].expected_success)
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{
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g_assert_error (error, G_FILE_ERROR, tests[i].expected_error);
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g_assert_false (ret);
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g_clear_error (&error);
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}
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else
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{
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g_assert_no_error (error);
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g_assert_true (ret);
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/* Check the contents and mode were set correctly. The mode isn’t
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* changed on existing files. */
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ret = g_file_get_contents (set_contents_name, &buf, &len, &error);
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g_assert_no_error (error);
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g_assert_true (ret);
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g_assert_cmpstr (buf, ==, "b");
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g_assert_cmpuint (len, ==, 1);
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g_free (buf);
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g_assert_no_errno (g_lstat (set_contents_name, &statbuf));
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if (tests[i].existing_file == EXISTING_FILE_NONE)
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g_assert_cmpint (statbuf.st_mode & ~S_IFMT, ==, tests[i].new_mode);
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#ifndef G_OS_WIN32
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if (tests[i].existing_file == EXISTING_FILE_SYMLINK)
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{
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gchar *target_contents = NULL;
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/* If the @set_contents_name was a symlink, it should now be a
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* regular file, and the file it pointed to should not have
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* changed. */
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g_assert_cmpint (statbuf.st_mode & S_IFMT, ==, S_IFREG);
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g_file_get_contents (file_name, &target_contents, NULL, &error);
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g_assert_no_error (error);
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g_assert_cmpstr (target_contents, ==, "a");
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g_free (target_contents);
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}
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#endif /* !G_OS_WIN32 */
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}
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if (dir_name != NULL)
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g_rmdir (dir_name);
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if (link_name != NULL)
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g_remove (link_name);
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if (file_name != NULL)
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g_remove (file_name);
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g_free (dir_name);
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g_free (link_name);
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g_free (file_name);
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}
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}
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}
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static void
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test_set_contents_full_read_only_file (void)
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{
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gint fd;
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GError *error = NULL;
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gchar *file_name = NULL;
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gboolean ret;
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g_test_summary ("Test g_file_set_contents_full() on a read-only file");
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/* Can’t test this with different #GFileSetContentsFlags as they all have
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* different behaviours wrt replacing the file while noticing/ignoring the
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* existing file permissions. */
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fd = g_file_open_tmp (NULL, &file_name, &error);
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g_assert_no_error (error);
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write (fd, "a", 1);
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g_assert_no_errno (g_fsync (fd));
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close (fd);
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g_assert_no_errno (chmod (file_name, 0200));
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/* Set the file contents */
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ret = g_file_set_contents_full (file_name, "b", 1, G_FILE_SET_CONTENTS_NONE, 0644, &error);
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g_assert_error (error, G_FILE_ERROR, G_FILE_ERROR_ACCES);
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g_assert_false (ret);
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g_clear_error (&error);
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g_remove (file_name);
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g_free (file_name);
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}
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static void
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test_set_contents_full_read_only_directory (void)
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{
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GFileSetContentsFlags flags_mask =
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G_FILE_SET_CONTENTS_ONLY_EXISTING |
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G_FILE_SET_CONTENTS_DURABLE |
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G_FILE_SET_CONTENTS_CONSISTENT;
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gint flags;
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g_test_summary ("Test g_file_set_contents_full() on a file in a read-only directory");
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for (flags = 0; flags < (gint) flags_mask; flags++)
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{
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gint fd;
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GError *error = NULL;
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gchar *dir_name = NULL;
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gchar *file_name = NULL;
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gboolean ret;
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g_test_message ("Flags %d", flags);
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dir_name = g_dir_make_tmp ("glib-file-set-contents-full-rodir-XXXXXX", &error);
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g_assert_no_error (error);
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file_name = g_build_filename (dir_name, "file", NULL);
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fd = g_open (file_name, O_CREAT | O_RDWR, 0644);
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g_assert_cmpint (fd, >=, 0);
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write (fd, "a", 1);
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g_assert_no_errno (g_fsync (fd));
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close (fd);
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g_assert_no_errno (chmod (dir_name, 0));
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/* Set the file contents */
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ret = g_file_set_contents_full (file_name, "b", 1, flags, 0644, &error);
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g_assert_error (error, G_FILE_ERROR, G_FILE_ERROR_ACCES);
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g_assert_false (ret);
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g_clear_error (&error);
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g_remove (file_name);
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g_unlink (dir_name);
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g_free (file_name);
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g_free (dir_name);
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}
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}
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static void
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test_read_link (void)
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{
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@ -1545,6 +1796,9 @@ main (int argc,
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g_test_add_func ("/fileutils/mkstemp", test_mkstemp);
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g_test_add_func ("/fileutils/mkdtemp", test_mkdtemp);
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g_test_add_func ("/fileutils/set-contents", test_set_contents);
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g_test_add_func ("/fileutils/set-contents-full", test_set_contents_full);
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g_test_add_func ("/fileutils/set-contents-full/read-only-file", test_set_contents_full_read_only_file);
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g_test_add_func ("/fileutils/set-contents-full/read-only-directory", test_set_contents_full_read_only_directory);
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g_test_add_func ("/fileutils/read-link", test_read_link);
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g_test_add_func ("/fileutils/stdio-wrappers", test_stdio_wrappers);
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g_test_add_func ("/fileutils/fopen-modes", test_fopen_modes);
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