added unit tests support

Signed-off-by: h4570 <sandro.sobczynski@gmail.com>

src/unit_tests/.gitignore

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+.vscode/
+bin/**
+fonts/**

src/unit_tests/Makefile

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+EE_BIN = unit_tests.elf
+
+TYRA_DIR = ./../engine
+PCSX2_PATH = /mnt/c/Program\ Files\ \(x86\)/PCSX2/pcsx2.exe
+WSL_TYRA_PATH = \\\\wsl$$\\PS2-DEV\\repos\\tyra
+
+EE_OBJS =					\
+	tests/utils/math.o		\
+	main.o
+
+EE_LIBS = -ltyra 
+
+all: $(EE_BIN)
+	$(EE_STRIP) --strip-all $(EE_BIN)
+	mv $(EE_BIN) bin/$(EE_BIN)
+	rm $(EE_OBJS)
+
+rebuild-engine: 
+	cd $(TYRA_DIR) && make clean && make
+
+clean:
+	rm -f $(EE_OBJS)
+
+run: $(EE_BIN)
+	killall -v ps2client || true
+	ps2client reset
+	ps2client reset
+	$(EE_STRIP) --strip-all $(EE_BIN)
+	mv $(EE_BIN) bin/$(EE_BIN)
+	rm $(EE_OBJS)
+	cd bin/ && ps2client execee host:$(EE_BIN)
+
+run-pcsx2:
+	taskkill.exe /f /t /im pcsx2.exe || true
+	$(PCSX2_PATH) --elf=$(WSL_TYRA_PATH)\\src\\unit_tests\\bin\\unit_tests.elf
+
+
+show:
+	cat bin/test-result.txt
+
+include $(TYRA_DIR)/Makefile.pref

src/unit_tests/main.cpp

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+/*
+# ______       ____   ___
+#   |     \/   ____| |___|    
+#   |     |   |   \  |   |       
+#-----------------------------------------------------------------------
+# Copyright 2021, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+// To run unit tests
+// 1. Make sure that your $(PCSX2_PATH) and $(WSL_TYRA_PATH) Makefile variables are correct
+// 2. make && make run-pcsx2 && make show
+// 3. Click 'X' in PCSX2 when screen will be on memory card selection stage
+// 4. Voila :)
+
+const int CUSTOM_ARGC = 5;
+char const *CUSTOM_ARGV[] = {
+    "",
+    "--reporter",
+    "console",
+    "--out",
+    "test-result.txt"};
+
+#define CATCH_CONFIG_MAIN
+#define CATCH_CONFIG_NO_POSIX_SIGNALS
+
+#include "catch.hpp"

src/unit_tests/tests/utils/math.cpp

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+/*
+# ______       ____   ___
+#   |     \/   ____| |___|    
+#   |     |   |   \  |   |       
+#-----------------------------------------------------------------------
+# Copyright 2021, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+#include <catch.hpp>
+#include <utils/math.hpp>
+
+SCENARIO("min(a,b) greater 'a' should return 'b'", "[math.cpp]")
+{
+    REQUIRE(Math::min(10, 5) == 5);
+}
+
+SCENARIO("min(a,b) greater 'b' should return 'a'", "[math.cpp]")
+{
+    REQUIRE(Math::min(-5, 5) == -5);
+}