Added Tests for UndoRedo

tests/core/object/test_undo_redo.h

@@ -0,0 +1,118 @@
+/**************************************************************************/
+/*  test_undo_redo.h                                                      */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+#ifndef TEST_UNDO_REDO_H
+#define TEST_UNDO_REDO_H
+
+#include "core/object/undo_redo.h"
+#include "tests/test_macros.h"
+
+// Declared in global namespace because of GDCLASS macro warning (Windows):
+// "Unqualified friend declaration referring to type outside of the nearest enclosing namespace
+// is a Microsoft extension; add a nested name specifier".
+class _TestUndoRedoObject : public Object {
+	GDCLASS(_TestUndoRedoObject, Object);
+	int property_value = 0;
+
+protected:
+	static void _bind_methods() {
+		ClassDB::bind_method(D_METHOD("set_property", "property"), &_TestUndoRedoObject::set_property);
+		ClassDB::bind_method(D_METHOD("get_property"), &_TestUndoRedoObject::get_property);
+		ADD_PROPERTY(PropertyInfo(Variant::INT, "property"), "set_property", "get_property");
+	}
+
+public:
+	void set_property(int value) { property_value = value; }
+	int get_property() const { return property_value; }
+	void increment_property(int value) { property_value = value; }
+};
+
+namespace TestUndoRedo {
+
+void set_property_action(UndoRedo *undo_redo, const String &name, _TestUndoRedoObject *test_object, int value, UndoRedo::MergeMode merge_mode = UndoRedo::MERGE_DISABLE) {
+	undo_redo->create_action("Set Property", merge_mode);
+	undo_redo->add_do_property(test_object, "property", value);
+	undo_redo->add_undo_property(test_object, "property", test_object->get_property());
+	undo_redo->commit_action();
+}
+
+TEST_CASE("[UndoRedo] Simple Property UndoRedo") {
+	GDREGISTER_CLASS(_TestUndoRedoObject);
+	UndoRedo *undo_redo = memnew(UndoRedo());
+
+	_TestUndoRedoObject *test_object = memnew(_TestUndoRedoObject());
+
+	CHECK(test_object->get_property() == 0);
+	CHECK(undo_redo->get_version() == 1);
+	CHECK(undo_redo->get_history_count() == 0);
+
+	set_property_action(undo_redo, "Set Property", test_object, 10);
+
+	CHECK(test_object->get_property() == 10);
+	CHECK(undo_redo->get_version() == 2);
+	CHECK(undo_redo->get_history_count() == 1);
+
+	undo_redo->undo();
+
+	CHECK(test_object->get_property() == 0);
+	CHECK(undo_redo->get_version() == 1);
+	CHECK(undo_redo->get_history_count() == 1);
+
+	undo_redo->redo();
+
+	CHECK(test_object->get_property() == 10);
+	CHECK(undo_redo->get_version() == 2);
+	CHECK(undo_redo->get_history_count() == 1);
+
+	set_property_action(undo_redo, "Set Property", test_object, 100);
+
+	CHECK(test_object->get_property() == 100);
+	CHECK(undo_redo->get_version() == 3);
+	CHECK(undo_redo->get_history_count() == 2);
+
+	set_property_action(undo_redo, "Set Property", test_object, 1000);
+
+	CHECK(test_object->get_property() == 1000);
+	CHECK(undo_redo->get_version() == 4);
+	CHECK(undo_redo->get_history_count() == 3);
+
+	undo_redo->undo();
+
+	CHECK(test_object->get_property() == 100);
+	CHECK(undo_redo->get_version() == 3);
+	CHECK(undo_redo->get_history_count() == 3);
+
+	memdelete(test_object);
+	memdelete(undo_redo);
+}
+
+} //namespace TestUndoRedo
+
+#endif // TEST_UNDO_REDO_H

tests/test_main.cpp

@@ -68,6 +68,7 @@
 #include "tests/core/object/test_class_db.h"
 #include "tests/core/object/test_method_bind.h"
 #include "tests/core/object/test_object.h"
+#include "tests/core/object/test_undo_redo.h"
 #include "tests/core/os/test_os.h"
 #include "tests/core/string/test_node_path.h"
 #include "tests/core/string/test_string.h"