Emulator+Test: Add main and example unit test

.clang-format

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+# -*- yaml -*-
+
+---
+BasedOnStyle:                                    WebKit
+IndentWidth:                                     4
+---
+Language:                                        Cpp
+
+AlignAfterOpenBracket:                           Align
+AlignEscapedNewlines:                            Left
+AlignOperands:                                   Align
+AlignTrailingComments:                           true
+
+AllowAllArgumentsOnNextLine:                     false
+AllowAllConstructorInitializersOnNextLine:       true
+AllowAllParametersOfDeclarationOnNextLine:       false
+AllowShortLambdasOnASingleLine:                  All
+
+AlwaysBreakTemplateDeclarations:                 Yes
+IndentPPDirectives:                              BeforeHash
+
+BraceWrapping:
+  AfterEnum:                                     false
+  AfterFunction:                                 true
+  BeforeCatch:                                   true
+  BeforeElse:                                    true
+  BeforeLambdaBody:                              false
+  SplitEmptyRecord:                              false
+BreakBeforeBraces:                               Custom
+BreakInheritanceList:                            BeforeComma
+
+SpaceAfterTemplateKeyword:                       false
+SpaceInEmptyBlock:                               false
+NamespaceIndentation:                            None
+FixNamespaceComments:                            true
+Standard:                                        c++20
+TabWidth:                                        4
+UseTab:                                          AlignWithSpaces
+...

.gitignore

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+# Directories
+
+.cache/
+.clangd/
+build/
+
+# Files

CMakeLists.txt

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+# ------------------------------------------
+# User config between these lines
+
+# Set project name
+set(PROJECT "garbage")
+
+# Unit tests
+option(GARBAGE_BUILD_TESTS "Build the GarbAGE test programs" ON)
+
+# ------------------------------------------
+
+cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
+project(${PROJECT} CXX)
+
+# ------------------------------------------
+# Setup C++ compiler
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# Compiler flags used for all build types
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic")
+# -Wall      = All warnings about contructions that are easily avoidable
+# -Wextra    = Extra warning flags not covered by -Wall
+# -Wpedantic = Warnings for compiler extensions not part of the standard
+
+# Set default build type if not specified
+set(DEFAULT_BUILD_TYPE Release)
+if(EXISTS ${CMAKE_SOURCE_DIR}/.git)
+	set(DEFAULT_BUILD_TYPE Debug)
+endif()
+if(NOT CMAKE_BUILD_TYPE)
+	set(CMAKE_BUILD_TYPE ${DEFAULT_BUILD_TYPE})
+endif()
+
+# Set build type specific compiler flags
+message("--- ${CMAKE_BUILD_TYPE} ---")
+if(${CMAKE_BUILD_TYPE} STREQUAL Debug)
+	set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Og -g -pg")
+	# -Og = Optimizations that do not interfere with debugging
+	# -g  = Produce debugging information in OS's native format
+	# -pg = Generate profile information for analysis with gprof
+	# $ gprof <PROJECT> gmon.out > profile-data.txt
+elseif(${CMAKE_BUILD_TYPE} STREQUAL Release)
+	set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
+	# -O3 = Optimizations that increase compilation time and performance
+endif()
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+# ------------------------------------------
+# Library
+
+set(RUC_BUILD_TESTS OFF)
+add_subdirectory("vendor/ruc")
+
+# ------------------------------------------
+# Application target
+
+# Define source files
+file(GLOB_RECURSE PROJECT_SOURCES "src/*.cpp")
+set(PROJECT_SOURCES ${PROJECT_SOURCES})
+
+add_executable(${PROJECT} ${PROJECT_SOURCES})
+target_include_directories(${PROJECT} PRIVATE
+	"src"
+	"vendor/ruc/src")
+target_link_libraries(${PROJECT} ruc)
+
+# ------------------------------------------
+# Execute target
+
+add_custom_target(run
+    COMMAND ${PROJECT})
+add_dependencies(run ${PROJECT})
+
+# ------------------------------------------
+# Unit test target
+
+if (GARBAGE_BUILD_TESTS)
+	# Define test source files
+	file(GLOB_RECURSE TEST_SOURCES "test/*.cpp")
+	set(TEST_SOURCES ${TEST_SOURCES} ${PROJECT_SOURCES})
+	list(REMOVE_ITEM TEST_SOURCES "${CMAKE_SOURCE_DIR}/src/main.cpp")
+
+	add_executable(${PROJECT}-unit-test ${TEST_SOURCES})
+	target_include_directories(${PROJECT}-unit-test PRIVATE
+		"src"
+		"test"
+		"vendor/ruc/src"
+		"vendor/ruc/test")
+	target_link_libraries(${PROJECT}-unit-test ruc-test)
+endif()

README.org

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+#+TITLE: GarbAGE (Garbage Accurate GameBoy Emulator)
+#+AUTHOR: Riyyi
+#+LANGUAGE: en
+#+OPTIONS: toc:nil
+
+Accurate GameBoy Emulator.

compile_commands.json

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+build/compile_commands.json

src/main.cpp

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+#include <cstdio>
+
+#include "ruc/timer.h"
+
+int main(int argc, char* argv[])
+{
+	ruc::Timer t;
+
+	printf("%fms\n", t.elapsedNanoseconds() / 1000000.0);
+
+	return 0;
+}

test/testthing.cpp

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+/*
+ * Copyright (C) 2022 Riyyi
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "macro.h"
+#include "testcase.h"
+#include "testsuite.h"
+
+// -----------------------------------------
+
+TEST_CASE(Thing)
+{
+	int a = 5;
+	EXPECT_EQ(a, 5);
+}