Setup basic testing framework

CMakeLists.txt

@@ -5,6 +5,8 @@ project(glerminal
 	LANGUAGES C CXX
 )
 
+include(CTest)
+
 option(GLERMINAL_OPENGL_DEBUG_CONTEXT "" OFF)
 set(GLERMINAL_GRID_WIDTH 40 CACHE STRING "")
 set(GLERMINAL_GRID_HEIGHT 25 CACHE STRING "")
@@ -62,4 +64,8 @@ endif()
 
 if (PROJECT_IS_TOP_LEVEL)
 	add_subdirectory(examples examples)
+endif()
+
+if (BUILD_TESTING)
+	add_subdirectory(tests tests)
 endif()

examples/basic.cpp

@@ -1,6 +1,7 @@
 #include <glerminal.h>
 
 #include <cstdlib>
+#include <cmath>
 
 namespace
 {

examples/towers.cpp

@@ -7,6 +7,8 @@ namespace
 {
 	void init()
 	{
+		srand(0);
+		
 		glerminal_load_sprites_file("resources/towers.png");
 
 		for (int i = 0; i < LAYER_COUNT; i++)

include/glerminal.h

@@ -18,6 +18,8 @@ typedef void (*glerminal_main_cb)(float dt);
  */
 void glerminal_run(glerminal_init_cb init, glerminal_main_cb main);
 
+void glerminal_quit();
+
 /**
  * @brief Update the displayed screen contents to the current state of the library
  */

source/glerminal-private.h

@@ -1,5 +1,5 @@
-#ifndef TERMG_PRIVATE_H
-#define TERMG_PRIVATE_H
+#ifndef GLERMINAL_PRIVATE_H
+#define GLERMINAL_PRIVATE_H
 
 #include "glerminal.h"
 
@@ -34,6 +34,7 @@ namespace glerminal
 		glerminal& operator=(glerminal&&) = delete;
 
 		void run();
+		void quit();
 
 		void flush();
 
@@ -98,4 +99,4 @@ namespace glerminal
 	};
 }
 
-#endif//TERMG_PRIVATE_H
+#endif//GLERMINAL_PRIVATE_H

source/glerminal.cpp

@@ -194,6 +194,11 @@ namespace glerminal
 		}
 	}
 
+	void glerminal::quit()
+	{
+		glfwSetWindowShouldClose(m_window, GLFW_TRUE);
+	}
+
 	void glerminal::flush()
 	{
 		glNamedBufferData(m_sprites_instance_vbo, sizeof(m_cells), m_cells, GL_STREAM_DRAW);
@@ -664,6 +669,13 @@ void glerminal_run(glerminal_init_cb init, glerminal_main_cb main)
 	}
 }
 
+void glerminal_quit()
+{
+	if (!GLERMINAL_G) { return; }
+
+	GLERMINAL_G->quit();
+}
+
 void glerminal_flush()
 {
 	if (!GLERMINAL_G) { return; }

tests/CMakeLists.txt

@@ -0,0 +1,57 @@
+cmake_minimum_required(VERSION 3.28)
+
+set(CMAKE_FOLDER tests)
+
+add_library(test-common STATIC
+	${CMAKE_SOURCE_DIR}/source/glad/glad.h
+
+	test-common/test-common.h
+	test-common/stb_image_write.h
+	test-common/test-common.cpp
+)
+
+target_include_directories(test-common
+	PUBLIC
+		test-common
+	PRIVATE
+		${CMAKE_SOURCE_DIR}/source
+)
+
+target_link_libraries(test-common PRIVATE glerminal)
+
+file(GLOB_RECURSE
+	TEST_RESOURCES
+	RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+	CONFIGURE_DEPENDS
+
+	${CMAKE_CURRENT_SOURCE_DIR}/resources/**.png
+)
+
+foreach(RESOURCE_FILE ${TEST_RESOURCES})
+	add_custom_command(
+		OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${RESOURCE_FILE}
+		COMMAND ${CMAKE_COMMAND} -E copy
+			${CMAKE_CURRENT_SOURCE_DIR}/${RESOURCE_FILE}
+			${CMAKE_CURRENT_BINARY_DIR}/${RESOURCE_FILE}
+		DEPENDS
+			${CMAKE_CURRENT_SOURCE_DIR}/${RESOURCE_FILE}
+	)
+endforeach()
+
+file(GLOB_RECURSE
+	TEST_SOURCES
+	RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
+	CONFIGURE_DEPENDS
+
+	${CMAKE_CURRENT_SOURCE_DIR}/*.cpp
+)
+
+list(REMOVE_ITEM TEST_SOURCES test-common/test-common.cpp)
+list(TRANSFORM TEST_RESOURCES PREPEND ${CMAKE_CURRENT_BINARY_DIR}/)
+
+foreach(SOURCE_FILE ${TEST_SOURCES})
+	get_filename_component(SOURCE_FILENAME ${SOURCE_FILE} NAME_WLE)
+	add_executable(test-${SOURCE_FILENAME} WIN32 ${SOURCE_FILE} ${TEST_RESOURCES})
+	target_link_libraries(test-${SOURCE_FILENAME} PRIVATE glerminal test-common)
+	add_test(NAME test-${SOURCE_FILENAME} COMMAND test-${SOURCE_FILENAME})
+endforeach()

tests/basic.cpp

@@ -0,0 +1,31 @@
+#include <glerminal.h>
+
+#include <test-common.h>
+
+namespace
+{
+	void init()
+	{
+		glerminal_load_sprites_file("resources/image.png");
+		
+		for (int i = 0; i < GRID_HEIGHT; i++)
+		{
+			glerminal_set(i, i, 0, 1);
+		}
+
+		glerminal_flush();
+
+		glerminal_test_save_image();
+
+		glerminal_quit();
+	}
+
+	void mainloop(float) {}
+}
+
+int main()
+{
+	glerminal_run(init, mainloop);
+
+	return 0;
+}

tests/test-common/test-common.cpp

@@ -0,0 +1,21 @@
+#include <test-common.h>
+
+#include <glerminal.h>
+#include <glad/glad.h>
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include <stb_image_write.h>
+
+namespace
+{
+	unsigned char pixels[1280 * 800 * 3];
+}
+
+void glerminal_test_save_image()
+{
+	glReadBuffer(GL_LEFT);
+	glReadPixels(0, 0, GRID_WIDTH * CELL_SCALE * 8, GRID_HEIGHT * CELL_SCALE * 8, GL_RGB, GL_UNSIGNED_BYTE, pixels);
+
+	stbi_flip_vertically_on_write(true);
+	stbi_write_png("image.png", GRID_WIDTH * CELL_SCALE * 8, GRID_HEIGHT * CELL_SCALE * 8, 3, pixels, 1280 * 3);
+}

tests/test-common/test-common.h

@@ -0,0 +1,6 @@
+#ifndef GLERMINAL_TEST_COMMON_H
+#define GLERMINAL_TEST_COMMON_H
+
+void glerminal_test_save_image();
+
+#endif//GLERMINAL_TEST_COMMON_H