[tests] Exercise the Model filtering

Add a test unit that exercises the ClutterModel iteration API
when there is a filter in place.

tests/conform/test-conform-main.c

@@ -139,6 +139,7 @@ main (int argc, char **argv)
 
   TEST_CONFORM_SIMPLE ("/model", test_list_model_populate);
   TEST_CONFORM_SIMPLE ("/model", test_list_model_iterate);
+  TEST_CONFORM_SIMPLE ("/model", test_list_model_filter);
 
   return g_test_run ();
 }

tests/conform/test-model.c

@@ -64,25 +64,50 @@ static const struct {
   { "String 1", 1 },
 };
 
+static const struct {
+  const gchar *expected_foo;
+  gint expected_bar;
+} filter_odd[] = {
+  { "String 1", 1 },
+  { "String 3", 3 },
+  { "String 5", 5 },
+  { "String 7", 7 },
+  { "String 9", 9 },
+};
+
+static const struct {
+  const gchar *expected_foo;
+  gint expected_bar;
+} filter_even[] = {
+  { "String 8", 8 },
+  { "String 6", 6 },
+  { "String 4", 4 },
+  { "String 2", 2 },
+};
+
 static inline void
 compare_iter (ClutterModelIter *iter,
+              const gint        expected_row,
               const gchar      *expected_foo,
               const gint        expected_bar)
 {
   gchar *foo = NULL;
   gint bar = 0;
+  gint row = 0;
 
+  row = clutter_model_iter_get_row (iter);
   clutter_model_iter_get (iter,
                           COLUMN_FOO, &foo,
                           COLUMN_BAR, &bar,
                           -1);
 
   if (g_test_verbose ())
-    g_print ("Row %d: Got [ '%s', '%d' ], expected [ '%s', '%d' ]\n",
-             clutter_model_iter_get_row (iter),
+    g_print ("Row %d => %d: Got [ '%s', '%d' ], expected [ '%s', '%d' ]\n",
+             row, expected_row,
              foo, bar,
              expected_foo, expected_bar);
 
+  g_assert_cmpint (row, ==, expected_row);
   g_assert_cmpstr (foo, ==, expected_foo);
   g_assert_cmpint (bar, ==, expected_bar);
 
@@ -97,12 +122,114 @@ on_row_added (ClutterModel     *model,
   ModelData *model_data = data;
 
   compare_iter (iter,
+                model_data->n_row,
                 base_model[model_data->n_row].expected_foo,
                 base_model[model_data->n_row].expected_bar);
 
   model_data->n_row += 1;
 }
 
+static gboolean
+filter_even_rows (ClutterModel     *model,
+                  ClutterModelIter *iter,
+                  gpointer          dummy G_GNUC_UNUSED)
+{
+  gint bar_value;
+
+  clutter_model_iter_get (iter, COLUMN_BAR, &bar_value, -1);
+
+  if (bar_value % 2 == 0)
+    return TRUE;
+
+  return FALSE;
+}
+
+static gboolean
+filter_odd_rows (ClutterModel     *model,
+                 ClutterModelIter *iter,
+                 gpointer          dummy G_GNUC_UNUSED)
+{
+  gint bar_value;
+
+  clutter_model_iter_get (iter, COLUMN_BAR, &bar_value, -1);
+
+  if (bar_value % 2 != 0)
+    return TRUE;
+
+  return FALSE;
+}
+
+void
+test_list_model_filter (TestConformSimpleFixture *fixture,
+                        gconstpointer             data)
+{
+  ModelData test_data = { NULL, 0 };
+  ClutterModelIter *iter;
+  gint i;
+
+  test_data.model = clutter_list_model_new (N_COLUMNS,
+                                            G_TYPE_STRING, "Foo",
+                                            G_TYPE_INT,    "Bar");
+  test_data.n_row = 0;
+
+  for (i = 1; i < 10; i++)
+    {
+      gchar *foo = g_strdup_printf ("String %d", i);
+
+      clutter_model_append (test_data.model,
+                            COLUMN_FOO, foo,
+                            COLUMN_BAR, i,
+                            -1);
+
+      g_free (foo);
+    }
+
+  if (g_test_verbose ())
+    g_print ("Forward iteration (filter odd)...\n");
+
+  clutter_model_set_filter (test_data.model, filter_odd_rows, NULL, NULL);
+
+  iter = clutter_model_get_first_iter (test_data.model);
+  g_assert (iter != NULL);
+
+  i = 0;
+  while (!clutter_model_iter_is_last (iter))
+    {
+      compare_iter (iter, i,
+                    filter_odd[i].expected_foo,
+                    filter_odd[i].expected_bar);
+
+      iter = clutter_model_iter_next (iter);
+      i += 1;
+    }
+
+  g_object_unref (iter);
+
+  if (g_test_verbose ())
+    g_print ("Backward iteration (filter even)...\n");
+
+  clutter_model_set_filter (test_data.model, filter_even_rows, NULL, NULL);
+
+  iter = clutter_model_get_last_iter (test_data.model);
+  g_assert (iter != NULL);
+
+  i = 0;
+  do
+    {
+      compare_iter (iter, G_N_ELEMENTS (filter_even) - i - 1,
+                    filter_even[i].expected_foo,
+                    filter_even[i].expected_bar);
+
+      iter = clutter_model_iter_prev (iter);
+      i += 1;
+    }
+  while (!clutter_model_iter_is_first (iter));
+
+  g_object_unref (iter);
+
+  g_object_unref (test_data.model);
+}
+
 void
 test_list_model_iterate (TestConformSimpleFixture *fixture,
                          gconstpointer             data)
@@ -141,7 +268,7 @@ test_list_model_iterate (TestConformSimpleFixture *fixture,
   i = 0;
   while (!clutter_model_iter_is_last (iter))
     {
-      compare_iter (iter,
+      compare_iter (iter, i,
                     forward_base[i].expected_foo,
                     forward_base[i].expected_bar);
 
@@ -158,10 +285,9 @@ test_list_model_iterate (TestConformSimpleFixture *fixture,
   g_assert (iter != NULL);
 
   i = 0;
-
   do
     {
-      compare_iter (iter,
+      compare_iter (iter, G_N_ELEMENTS (backward_base) - i - 1,
                     backward_base[i].expected_foo,
                     backward_base[i].expected_bar);
 
@@ -170,7 +296,7 @@ test_list_model_iterate (TestConformSimpleFixture *fixture,
     }
   while (!clutter_model_iter_is_first (iter));
 
-  compare_iter (iter,
+  compare_iter (iter, G_N_ELEMENTS (backward_base) - i - 1,
                 backward_base[i].expected_foo,
                 backward_base[i].expected_bar);