[gtk/misc-multiselection] Add tests for select_callback

[Matthias Clasen <matthiasc src gnome org>]

commit 27ce68b74a0858447c8b86f63c4994f4666d9fef
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 6 11:20:47 2020 -0400

    Add tests for select_callback

 testsuite/gtk/multiselection.c | 73 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
---
diff --git a/testsuite/gtk/multiselection.c b/testsuite/gtk/multiselection.c
index 2fd60aa1f5..f56387a878 100644
--- a/testsuite/gtk/multiselection.c
+++ b/testsuite/gtk/multiselection.c
@@ -438,6 +438,78 @@ test_readd (void)
   g_object_unref (selection);
 }
 
+typedef struct {
+  guint start;
+  guint n;
+  gboolean in;
+} SelectionData;
+
+static void
+select_some (guint position,
+             guint *start,
+             guint *n,
+             gboolean *selected,
+             gpointer data)
+{
+  SelectionData *sdata = data;
+  guint i;
+
+  for (i = 0; sdata[i].n != 0; i++)
+    {
+      if (sdata[i].start <= position &&
+          position < sdata[i].start + sdata[i].n)
+        break;
+    }
+
+  *start = sdata[i].start;
+  *n = sdata[i].n;
+  *selected = sdata[i].in;
+}
+
+static void
+test_callback (void)
+{
+  GtkSelectionModel *selection;
+  gboolean ret;
+  GListStore *store;
+  SelectionData data[] = {
+    { 0, 2, FALSE },
+    { 2, 3, TRUE },
+    { 5, 2, FALSE },
+    { 6, 3, TRUE },
+    { 9, 1, FALSE },
+    { 0, 0, FALSE }
+  };
+
+  SelectionData more_data[] = {
+    { 0, 3, FALSE },
+    { 3, 1, TRUE },
+    { 4, 3, FALSE },
+    { 7, 1, TRUE },
+    { 0, 0, FALSE }
+  };
+
+  store = new_store (1, 10, 1);
+
+  selection = new_model (store);
+  assert_model (selection, "1 2 3 4 5 6 7 8 9 10");
+  assert_selection (selection, "");
+  assert_selection_changes (selection, "");
+
+  ret = gtk_selection_model_select_callback (selection, select_some, data);
+  g_assert_true (ret);
+  assert_selection (selection, "3 4 5 7 8 9");
+  assert_selection_changes (selection, "2:7");
+
+  ret = gtk_selection_model_unselect_callback (selection, select_some, more_data);
+  g_assert_true (ret);
+  assert_selection (selection, "3 5 7 9");
+  assert_selection_changes (selection, "3:5");
+
+  g_object_unref (store);
+  g_object_unref (selection);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -456,6 +528,7 @@ main (int argc, char *argv[])
   g_test_add_func ("/multiselection/selection", test_selection);
   g_test_add_func ("/multiselection/select-range", test_select_range);
   g_test_add_func ("/multiselection/readd", test_readd);
+  g_test_add_func ("/multiselection/callback", test_callback);
 
   return g_test_run ();
 }