Merge pull request #88044 from brennennen/image_texture_unit_tests

Add `ImageTexture` unit tests

tests/scene/test_image_texture.h

@@ -0,0 +1,111 @@
+/**************************************************************************/
+/*  test_image_texture.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_IMAGE_TEXTURE_H
+#define TEST_IMAGE_TEXTURE_H
+
+#include "core/io/image.h"
+#include "scene/resources/image_texture.h"
+
+#include "tests/test_macros.h"
+#include "tests/test_utils.h"
+
+namespace TestImageTexture {
+
+// [SceneTree] in a test case name enables initializing a mock render server,
+// which ImageTexture is dependent on.
+TEST_CASE("[SceneTree][ImageTexture] constructor") {
+	Ref<ImageTexture> image_texture = memnew(ImageTexture);
+	CHECK(image_texture->get_width() == 0);
+	CHECK(image_texture->get_height() == 0);
+	CHECK(image_texture->get_format() == 0);
+	CHECK(image_texture->has_alpha() == false);
+	CHECK(image_texture->get_image() == Ref<Image>());
+}
+
+TEST_CASE("[SceneTree][ImageTexture] create_from_image") {
+	Ref<Image> image = memnew(Image(16, 8, true, Image::FORMAT_RGBA8));
+	Ref<ImageTexture> image_texture = ImageTexture::create_from_image(image);
+	CHECK(image_texture->get_width() == 16);
+	CHECK(image_texture->get_height() == 8);
+	CHECK(image_texture->get_format() == Image::FORMAT_RGBA8);
+	CHECK(image_texture->has_alpha() == true);
+	CHECK(image_texture->get_rid().is_valid() == true);
+}
+
+TEST_CASE("[SceneTree][ImageTexture] set_image") {
+	Ref<ImageTexture> image_texture = memnew(ImageTexture);
+	Ref<Image> image = memnew(Image(8, 4, false, Image::FORMAT_RGB8));
+	image_texture->set_image(image);
+	CHECK(image_texture->get_width() == 8);
+	CHECK(image_texture->get_height() == 4);
+	CHECK(image_texture->get_format() == Image::FORMAT_RGB8);
+	CHECK(image_texture->has_alpha() == false);
+	CHECK(image_texture->get_width() == image_texture->get_image()->get_width());
+	CHECK(image_texture->get_height() == image_texture->get_image()->get_height());
+	CHECK(image_texture->get_format() == image_texture->get_image()->get_format());
+}
+
+TEST_CASE("[SceneTree][ImageTexture] set_size_override") {
+	Ref<Image> image = memnew(Image(16, 8, false, Image::FORMAT_RGB8));
+	Ref<ImageTexture> image_texture = ImageTexture::create_from_image(image);
+	CHECK(image_texture->get_width() == 16);
+	CHECK(image_texture->get_height() == 8);
+	image_texture->set_size_override(Size2i(32, 16));
+	CHECK(image_texture->get_width() == 32);
+	CHECK(image_texture->get_height() == 16);
+}
+
+TEST_CASE("[SceneTree][ImageTexture] is_pixel_opaque") {
+	Ref<Image> image = memnew(Image(8, 8, false, Image::FORMAT_RGBA8));
+	image->set_pixel(0, 0, Color(0.0, 0.0, 0.0, 0.0)); // not opaque
+	image->set_pixel(0, 1, Color(0.0, 0.0, 0.0, 0.1)); // not opaque
+	image->set_pixel(0, 2, Color(0.0, 0.0, 0.0, 0.5)); // opaque
+	image->set_pixel(0, 3, Color(0.0, 0.0, 0.0, 0.9)); // opaque
+	image->set_pixel(0, 4, Color(0.0, 0.0, 0.0, 1.0)); // opaque
+
+	Ref<ImageTexture> image_texture = ImageTexture::create_from_image(image);
+	CHECK(image_texture->is_pixel_opaque(0, 0) == false);
+	CHECK(image_texture->is_pixel_opaque(0, 1) == false);
+	CHECK(image_texture->is_pixel_opaque(0, 2) == true);
+	CHECK(image_texture->is_pixel_opaque(0, 3) == true);
+	CHECK(image_texture->is_pixel_opaque(0, 4) == true);
+}
+
+TEST_CASE("[SceneTree][ImageTexture] set_path") {
+	Ref<ImageTexture> image_texture = memnew(ImageTexture);
+	String path = TestUtils::get_data_path("images/icon.png");
+	image_texture->set_path(path, true);
+	CHECK(image_texture->get_path() == path);
+}
+
+} //namespace TestImageTexture
+
+#endif // TEST_IMAGE_TEXTURE_H

tests/test_main.cpp

@@ -106,6 +106,7 @@
 #include "tests/scene/test_curve_2d.h"
 #include "tests/scene/test_curve_3d.h"
 #include "tests/scene/test_gradient.h"
+#include "tests/scene/test_image_texture.h"
 #include "tests/scene/test_navigation_agent_2d.h"
 #include "tests/scene/test_navigation_obstacle_2d.h"
 #include "tests/scene/test_navigation_region_2d.h"