Add unit tests for HeightMapShape3D

Added test cases for constructor and property getters/setters:
- Map width, depth, and data
- Minimum and maximum height
- Update map data from image

tests/scene/test_height_map_shape_3d.h

@@ -0,0 +1,122 @@
+/**************************************************************************/
+/*  test_height_map_shape_3d.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_HEIGHT_MAP_SHAPE_3D_H
+#define TEST_HEIGHT_MAP_SHAPE_3D_H
+
+#include "scene/resources/3d/height_map_shape_3d.h"
+#include "scene/resources/image_texture.h"
+
+#include "tests/test_macros.h"
+#include "tests/test_utils.h"
+
+namespace TestHeightMapShape3D {
+
+TEST_CASE("[SceneTree][HeightMapShape3D] Constructor") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	CHECK(height_map_shape->get_map_width() == 2);
+	CHECK(height_map_shape->get_map_depth() == 2);
+	CHECK(height_map_shape->get_map_data().size() == 4);
+	CHECK(height_map_shape->get_min_height() == 0.0);
+	CHECK(height_map_shape->get_max_height() == 0.0);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] set_map_width and get_map_width") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	height_map_shape->set_map_width(10);
+	CHECK(height_map_shape->get_map_width() == 10);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] set_map_depth and get_map_depth") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	height_map_shape->set_map_depth(15);
+	CHECK(height_map_shape->get_map_depth() == 15);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] set_map_data and get_map_data") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	Vector<real_t> map_data;
+	map_data.push_back(1.0);
+	map_data.push_back(2.0);
+	height_map_shape->set_map_data(map_data);
+	CHECK(height_map_shape->get_map_data().size() == 4.0);
+	CHECK(height_map_shape->get_map_data()[0] == 0.0);
+	CHECK(height_map_shape->get_map_data()[1] == 0.0);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] get_min_height") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	height_map_shape->set_map_width(3);
+	height_map_shape->set_map_depth(1);
+	height_map_shape->set_map_data(Vector<real_t>{ 1.0, 2.0, 0.5 });
+	CHECK(height_map_shape->get_min_height() == 0.5);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] get_max_height") {
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+	height_map_shape->set_map_width(3);
+	height_map_shape->set_map_depth(1);
+	height_map_shape->set_map_data(Vector<real_t>{ 1.0, 2.0, 0.5 });
+	CHECK(height_map_shape->get_max_height() == 2.0);
+}
+
+TEST_CASE("[SceneTree][HeightMapShape3D] update_map_data_from_image") {
+	// Create a HeightMapShape3D instance.
+	Ref<HeightMapShape3D> height_map_shape = memnew(HeightMapShape3D);
+
+	// Create a mock image with FORMAT_R8 and set its data.
+	Vector<uint8_t> image_data;
+	image_data.push_back(0);
+	image_data.push_back(128);
+	image_data.push_back(255);
+	image_data.push_back(64);
+
+	Ref<Image> image = memnew(Image);
+	image->set_data(2, 2, false, Image::FORMAT_R8, image_data);
+
+	height_map_shape->update_map_data_from_image(image, 0.0, 10.0);
+
+	// Check the map data.
+	Vector<real_t> expected_map_data = { 0.0, 5.0, 10.0, 2.5 };
+	Vector<real_t> actual_map_data = height_map_shape->get_map_data();
+	real_t tolerance = 0.1;
+
+	for (int i = 0; i < expected_map_data.size(); ++i) {
+		CHECK(Math::abs(actual_map_data[i] - expected_map_data[i]) < tolerance);
+	}
+
+	// Check the min and max heights.
+	CHECK(height_map_shape->get_min_height() == 0.0);
+	CHECK(height_map_shape->get_max_height() == 10.0);
+}
+
+} // namespace TestHeightMapShape3D
+
+#endif // TEST_HEIGHT_MAP_SHAPE_3D_H

tests/test_main.cpp

@@ -155,6 +155,7 @@
 
 #include "tests/scene/test_arraymesh.h"
 #include "tests/scene/test_camera_3d.h"
+#include "tests/scene/test_height_map_shape_3d.h"
 #include "tests/scene/test_path_3d.h"
 #include "tests/scene/test_path_follow_3d.h"
 #include "tests/scene/test_primitives.h"