[gtk+] tests: Add a test for the CSS parser



commit 64fd32cdef9e55d35cf424c36b0f35ada736258d
Author: Benjamin Otte <otte redhat com>
Date:   Thu Apr 7 02:15:42 2011 +0200

    tests: Add a test for the CSS parser
    
    Tests in the parser need 1 or 2 files:
    1) test.css
    2) test.ref.css (optional, defaults to test.css)
    
    The test instantiates a CSS provider, loads test.css, then dumps the
    loaded file to test.out.css and then checks that that file matches
    test.ref.css. If not, it dumps a diff between those two to the log and
    fails.
    
    You want to run the test with --verbose to get the output dumped to
    stdout.

 configure.ac                       |    2 +
 tests/Makefile.am                  |    2 +-
 tests/css/parser/Makefile.am       |   23 +++++
 tests/css/parser/test-css-parser.c |  176 ++++++++++++++++++++++++++++++++++++
 4 files changed, 202 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ad5e6bc..e9c2778 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1650,6 +1650,8 @@ demos/gtk-demo/Makefile
 demos/gtk-demo/geninclude.pl
 examples/Makefile
 tests/Makefile
+tests/css/Makefile
+tests/css/parser/Makefile
 tests/reftests/Makefile
 docs/Makefile
 docs/reference/Makefile
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8c87a51..fe07779 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -1,7 +1,7 @@
 ## Makefile.am for gtk+/tests
 include $(top_srcdir)/Makefile.decl
 
-SUBDIRS = reftests
+SUBDIRS = css reftests
 
 INCLUDES =				\
 	-I$(top_srcdir)			\
diff --git a/tests/css/parser/Makefile.am b/tests/css/parser/Makefile.am
new file mode 100644
index 0000000..eed1ded
--- /dev/null
+++ b/tests/css/parser/Makefile.am
@@ -0,0 +1,23 @@
+include $(top_srcdir)/Makefile.decl
+
+TEST_PROGS += test-css-parser
+
+check_PROGRAMS = $(TEST_PROGS)
+
+test_css_parser_CFLAGS = \
+       -I$(top_srcdir)                 \
+       -I$(top_builddir)/gdk           \
+       -I$(top_srcdir)/gdk             \
+       -DGDK_DISABLE_DEPRECATED        \
+       -DGTK_DISABLE_DEPRECATED        \
+       $(GTK_DEBUG_FLAGS)              \
+       $(GTK_DEP_CFLAGS)
+
+test_css_parser_LDADD = \
+       $(top_builddir)/gdk/libgdk-3.la \
+       $(top_builddir)/gtk/libgtk-3.la \
+       $(GTK_DEP_LIBS)
+
+test_css_parser_SOURCES = \
+       test-css-parser.c
+
diff --git a/tests/css/parser/test-css-parser.c b/tests/css/parser/test-css-parser.c
new file mode 100644
index 0000000..dadcdf3
--- /dev/null
+++ b/tests/css/parser/test-css-parser.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2011 Red Hat Inc.
+ *
+ * Author:
+ *      Benjamin Otte <otte redhat com>
+ *
+ * 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 "config.h"
+
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+static char *
+test_get_reference_file (const char *css_file)
+{
+  GString *file = g_string_new (NULL);
+
+  if (g_str_has_suffix (css_file, ".css"))
+    g_string_append_len (file, css_file, strlen (css_file) - 4);
+  else
+    g_string_append (file, css_file);
+  
+  g_string_append (file, ".ref.css");
+
+  if (!g_file_test (file->str, G_FILE_TEST_EXISTS))
+    {
+      g_string_free (file, TRUE);
+      return g_strdup (css_file);
+    }
+
+  return g_string_free (file, FALSE);
+}
+
+static char *
+test_get_output_file (const char *css_file)
+{
+  GString *file = g_string_new (NULL);
+
+  if (g_str_has_suffix (css_file, ".css"))
+    g_string_append_len (file, css_file, strlen (css_file) - 4);
+  else
+    g_string_append (file, css_file);
+  
+  g_string_append (file, ".out.css");
+
+  return g_string_free (file, FALSE);
+}
+
+static char *
+diff_files (const char *file1,
+            const char *file2,
+            GError **   error)
+{
+  const char *command[] = { "diff", "-u", file1, file2, NULL };
+  char *diff;
+
+  /* run diff command */
+  if (!g_spawn_sync (NULL, (char **) command, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL,
+	&diff, NULL, NULL, error)) {
+    return NULL;
+  }
+
+  return diff;
+}
+
+static void
+test_css_file (GFile *file)
+{
+  GtkCssProvider *provider;
+  char *css, *diff;
+  char *css_file, *output_file, *reference_file;
+  GError *error = NULL;
+
+  css_file = g_file_get_path (file);
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_path (provider,
+                                   css_file,
+                                   &error);
+  g_assert_no_error (error);
+
+  css = gtk_css_provider_to_string (provider);
+  output_file = test_get_output_file (css_file);
+
+  g_file_set_contents (output_file, css, -1, &error);
+  g_assert_no_error (error);
+
+  g_free (css);
+
+  reference_file = test_get_reference_file (css_file);
+
+  diff = diff_files (reference_file, output_file, &error);
+  g_assert_no_error (error);
+
+  g_free (reference_file);
+  g_free (output_file);
+
+  if (diff && diff[0])
+    {
+      g_test_message ("%s", diff);
+      g_assert_not_reached ();
+    }
+
+  g_free (diff);
+  g_free (css_file);
+}
+
+int
+main (int argc, char **argv)
+{
+  const char *basedir;
+  GError *error = NULL;
+  GFile *dir;
+  GFileEnumerator *enumerator;
+  GFileInfo *info;
+
+  gtk_test_init (&argc, &argv);
+
+  if (g_getenv ("srcdir"))
+    basedir = g_getenv ("srcdir");
+  else
+    basedir = ".";
+    
+  dir = g_file_new_for_path (basedir);
+  enumerator = g_file_enumerate_children (dir, G_FILE_ATTRIBUTE_STANDARD_NAME, 0, NULL, &error);
+  g_assert_no_error (error);
+
+  while ((info = g_file_enumerator_next_file (enumerator, NULL, &error)))
+    {
+      GFile *file;
+      const char *filename;
+
+      filename = g_file_info_get_name (info);
+
+      if (!g_str_has_suffix (filename, ".css") ||
+          g_str_has_suffix (filename, ".out.css") ||
+          g_str_has_suffix (filename, ".ref.css"))
+        {
+          g_object_unref (info);
+          continue;
+        }
+
+      file = g_file_get_child (dir, filename);
+
+      g_test_add_vtable (g_file_get_path (file),
+                         0,
+                         file,
+                         NULL,
+                         (GTestFixtureFunc) test_css_file,
+                         (GTestFixtureFunc) g_object_unref);
+
+      g_object_unref (info);
+    }
+  
+  g_assert_no_error (error);
+  g_object_unref (enumerator);
+
+  return g_test_run ();
+}
+



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