1 files changed, 81 insertions, 0 deletions
diff --git a/tests/test-common.c b/tests/test-common.c
new file mode 100644
index 000000000..c317b3b1c
--- /dev/null
+++ b/tests/test-common.c
@@ -0,0 +1,81 @@
+/* GLib
+ * test-common.c: Common test code
+ *
+ * Copyright (C) 2014 Red Hat, Inc
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <glib.h>
+#include <string.h>
+
+#include <locale.h>
+
+#ifdef G_OS_WIN32
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
+
+#include "test-common.h"
+
+char *
+diff_with_file (const char  *file,
+                char        *text,
+                gssize       len,
+                GError     **error)
+{
+  const char *command[] = { "diff", "-u", "-i", file, NULL, NULL };
+  char *diff, *tmpfile;
+  int fd;
+
+  diff = NULL;
+
+  if (len < 0)
+    len = strlen (text);
+
+  /* write the text buffer to a temporary file */
+  fd = g_file_open_tmp (NULL, &tmpfile, error);
+  if (fd < 0)
+    return NULL;
+
+  if (write (fd, text, len) != (int) len)
+    {
+      close (fd);
+      g_set_error (error,
+                   G_FILE_ERROR, G_FILE_ERROR_FAILED,
+                   "Could not write data to temporary file '%s'", tmpfile);
+      goto done;
+    }
+  close (fd);
+  command[4] = tmpfile;
+
+  /* run diff command */
+  g_spawn_sync (NULL,
+                (char **) command,
+                NULL,
+                G_SPAWN_SEARCH_PATH,
+                NULL, NULL,
+                &diff,
+                NULL, NULL,
+                error);
+
+done:
+  unlink (tmpfile);
+  g_free (tmpfile);
+
+  return diff;
+}