[gtk+] Add some tests for GtkAdjustment

[Matthias Clasen <matthiasc src gnome org>]

commit c3bfaaa5d11004837c0935872448f35a330feb0f
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jul 22 18:32:02 2014 -0400

    Add some tests for GtkAdjustment

 testsuite/gtk/Makefile.am  |    1 +
 testsuite/gtk/adjustment.c |  164 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 165 insertions(+), 0 deletions(-)
---
diff --git a/testsuite/gtk/Makefile.am b/testsuite/gtk/Makefile.am
index 281f95b..e9f209f 100644
--- a/testsuite/gtk/Makefile.am
+++ b/testsuite/gtk/Makefile.am
@@ -31,6 +31,7 @@ TEST_PROGS +=                         \
        accel                   \
        accessible              \
        action                  \
+       adjustment              \
        bitmask                 \
        builder                 \
        cellarea                \
diff --git a/testsuite/gtk/adjustment.c b/testsuite/gtk/adjustment.c
new file mode 100644
index 0000000..20e45cb
--- /dev/null
+++ b/testsuite/gtk/adjustment.c
@@ -0,0 +1,164 @@
+/* GTK - The GIMP Toolkit
+ * 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 Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gtk/gtk.h>
+
+static void
+test_basic (void)
+{
+  GtkAdjustment *a;
+
+  a = gtk_adjustment_new (2.0, 0.0, 100.0, 1.0, 5.0, 10.0);
+  
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 2.0);
+  g_assert_cmpfloat (gtk_adjustment_get_lower (a), ==, 0.0);
+  g_assert_cmpfloat (gtk_adjustment_get_upper (a), ==, 100.0);
+  g_assert_cmpfloat (gtk_adjustment_get_step_increment (a), ==, 1.0);
+  g_assert_cmpfloat (gtk_adjustment_get_page_increment (a), ==, 5.0);
+  g_assert_cmpfloat (gtk_adjustment_get_page_size (a), ==, 10.0);
+  g_assert_cmpfloat (gtk_adjustment_get_minimum_increment (a), ==, 1.0);
+
+  gtk_adjustment_set_value (a, 50.0);
+  gtk_adjustment_set_lower (a, 20.0);
+  gtk_adjustment_set_upper (a, 75.5);
+  gtk_adjustment_set_step_increment (a, 2.2);
+  gtk_adjustment_set_page_increment (a, 1.5);
+  gtk_adjustment_set_page_size (a, 10.0);
+
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 50.0);
+  g_assert_cmpfloat (gtk_adjustment_get_lower (a), ==, 20.0);
+  g_assert_cmpfloat (gtk_adjustment_get_upper (a), ==, 75.5);
+  g_assert_cmpfloat (gtk_adjustment_get_step_increment (a), ==, 2.2);
+  g_assert_cmpfloat (gtk_adjustment_get_page_increment (a), ==, 1.5);
+  g_assert_cmpfloat (gtk_adjustment_get_page_size (a), ==, 10.0);
+  g_assert_cmpfloat (gtk_adjustment_get_minimum_increment (a), ==, 1.5);
+
+  g_object_unref (a);
+}
+
+static gint changed_count;
+static gint value_changed_count;
+
+static void
+changed_cb (GtkAdjustment *a)
+{
+  changed_count++;
+}
+
+static void
+value_changed_cb (GtkAdjustment *a)
+{
+  value_changed_count++;
+}
+
+static void
+test_signals (void)
+{
+  GtkAdjustment *a;
+
+  a = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+
+  g_signal_connect (a, "changed", G_CALLBACK (changed_cb), NULL);
+  g_signal_connect (a, "value-changed", G_CALLBACK (value_changed_cb), NULL);
+
+  changed_count = value_changed_count = 0;
+  gtk_adjustment_changed (a);
+  g_assert_cmpint (changed_count, ==, 1);  
+  g_assert_cmpint (value_changed_count, ==, 0);  
+
+  changed_count = value_changed_count = 0;
+  gtk_adjustment_value_changed (a);
+  g_assert_cmpint (changed_count, ==, 0);  
+  g_assert_cmpint (value_changed_count, ==, 1);  
+
+  changed_count = value_changed_count = 0;
+  gtk_adjustment_configure (a, 0.0, 0.0, 100.0, 1.0, 5.0, 0.0);
+  g_assert_cmpint (changed_count, ==, 1);  
+  g_assert_cmpint (value_changed_count, ==, 0);  
+
+  changed_count = value_changed_count = 0;
+  gtk_adjustment_set_value (a, 50.0);
+  gtk_adjustment_set_lower (a, 20.0);
+  gtk_adjustment_set_upper (a, 75.5);
+  gtk_adjustment_set_step_increment (a, 2.2);
+  gtk_adjustment_set_page_increment (a, 1.5);
+  gtk_adjustment_set_page_size (a, 10.0);
+  g_assert_cmpint (changed_count, ==, 5);  
+  g_assert_cmpint (value_changed_count, ==, 1);  
+
+  g_object_unref (a); 
+}
+
+static void
+test_clamp (void)
+{
+  GtkAdjustment *a;
+
+  a = gtk_adjustment_new (2.0, 0.0, 100.0, 1.0, 5.0, 10.0);
+
+  gtk_adjustment_set_value (a, -10.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 0.0);
+
+  gtk_adjustment_set_value (a, 200.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 90.0);
+
+  gtk_adjustment_set_value (a, 99.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 90.0);
+
+  gtk_adjustment_configure (a, 0.0, 0.0, 10.0, 1.0, 5.0, 20.0);
+  
+  gtk_adjustment_set_value (a, 5.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 0.0);
+
+  g_object_unref (a);
+}
+
+static void
+test_clamp_page (void)
+{
+  GtkAdjustment *a;
+
+  a = gtk_adjustment_new (20.0, 0.0, 100.0, 1.0, 5.0, 10.0);
+
+  gtk_adjustment_clamp_page (a, 50.0, 55.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 45.0);
+
+  gtk_adjustment_clamp_page (a, 52.0, 58.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 48.0);
+
+  gtk_adjustment_clamp_page (a, 48.0, 50.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 48.0);
+
+  gtk_adjustment_clamp_page (a, 30.0, 50.0);
+  g_assert_cmpfloat (gtk_adjustment_get_value (a), ==, 30.0);
+
+  g_object_unref (a);
+}
+
+int
+main (int   argc,
+      char *argv[])
+{
+  gtk_test_init (&argc, &argv);
+
+  g_test_add_func ("/adjustment/basic", test_basic);
+  g_test_add_func ("/adjustment/signals", test_signals);
+  g_test_add_func ("/adjustment/clamp", test_clamp);
+  g_test_add_func ("/adjustment/clamp_page", test_clamp_page);
+
+  return g_test_run();
+}