Initialize a cmake project with google test

Finish initialization. We add google test, .clang-tidy and
.clang-format. And we finish CMakeLists.txt in root directory and
test directory.

.clang-format

@@ -0,0 +1,23 @@
+---
+Language: Cpp
+BasedOnStyle: Google
+AlignConsecutiveAssignments: true
+AlignConsecutiveDeclarations: false
+AlignConsecutiveMacros: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortBlocksOnASingleLine: true
+AllowShortCaseLabelsOnASingleLine: true
+AllowShortIfStatementsOnASingleLine: true
+AllowShortLoopsOnASingleLine: true
+AlwaysBreakAfterReturnType: None
+AlwaysBreakTemplateDeclarations: true
+BreakBeforeTernaryOperators: false
+BinPackArguments: false
+BinPackParameters: false
+ColumnLimit: 100
+DerivePointerAlignment: false
+IndentWidth: 4
+MaxEmptyLinesToKeep: 1
+PointerAlignment: Right
+SortIncludes: true

.clang-tidy

@@ -0,0 +1,36 @@
+Checks: >
+    -*,
+    cppcoreguidelines-no-malloc, modernize-deprecated-headers,
+    modernize-loop-convert, modernize-make-shared, modernize-pass-by-value, modernize-make-unique,
+    modernize-raw-string-literal, modernize-redundant-void-arg, modernize-replace-auto-ptr,
+    modernize-replace-random-shuffle, modernize-return-braced-init-list, modernize-shrink-to-fit,
+    modernize-unary-static-assert, modernize-use-bool-literals, modernize-use-default-member-init,
+    modernize-use-emplace, modernize-use-equals-default, modernize-use-equals-delete,
+    modernize-use-noexcept, modernize-use-nullptr, modernize-use-override,
+    modernize-use-transparent-functors, modernize-use-using,
+    performance-faster-string-find, performance-for-range-copy,
+    performance-implicit-conversion-in-loop, performance-inefficient-algorithm,
+    performance-inefficient-string-concatenation, performance-trivially-destructible,
+    performance-inefficient-vector-operation, performance-move-const-arg,
+    performance-move-constructor-init, performance-noexcept-move-constructor,
+    performance-no-automatic-move, performance-unnecessary-copy-initialization,
+    performance-type-promotion-in-math-fn, performance-unnecessary-value-param
+
+WarningsAsErrors: >
+    cppcoreguidelines-no-malloc, modernize-deprecated-headers,
+    modernize-loop-convert, modernize-make-shared, modernize-pass-by-value, modernize-make-unique,
+    modernize-raw-string-literal, modernize-redundant-void-arg, modernize-replace-auto-ptr,
+    modernize-replace-random-shuffle, modernize-return-braced-init-list, modernize-shrink-to-fit,
+    modernize-unary-static-assert, modernize-use-bool-literals, modernize-use-default-member-init,
+    modernize-use-emplace, modernize-use-equals-default, modernize-use-equals-delete,
+    modernize-use-noexcept, modernize-use-nullptr, modernize-use-override,
+    modernize-use-transparent-functors, modernize-use-using,
+    performance-faster-string-find, performance-for-range-copy,
+    performance-implicit-conversion-in-loop, performance-inefficient-algorithm,
+    performance-inefficient-string-concatenation, performance-trivially-destructible,
+    performance-inefficient-vector-operation, performance-move-const-arg,
+    performance-move-constructor-init, performance-noexcept-move-constructor,
+    performance-no-automatic-move, performance-unnecessary-copy-initialization,
+    performance-type-promotion-in-math-fn, performance-unnecessary-value-param
+
+HeaderFilterRegex: '^(src\/.*|include\/.*)$'

.gitignore

@@ -30,3 +30,13 @@
 *.exe
 *.out
 *.app
+
+# build
+*build*/
+
+# vscode
+*.vscode*/
+
+# cache
+*.cache*/
+*__pycache__*/

CMakeLists.txt

@@ -0,0 +1,32 @@
+cmake_minimum_required(VERSION 3.14)
+
+project(mca)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_C_STANDARD_REQUIRED on)
+set(CMAKE_EXPORT_COMPILE_COMMANDS on)
+set(CMAKE_CXX_EXTENSIONS off)
+
+if (WIN32)
+    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+endif()
+
+option(MCA_BUILD_SHARE_LIB "Build shared libraries rather than static libraries" on)
+option(MCA_BUILD_TEST "Whether or not to build unit test" on)
+
+aux_source_directory(src MCA_SOURCE)
+set(LIBRARY_OUTPUT_PATH lib)
+if (MCA_BUILD_SHARE_LIB)
+    add_library(mca SHARED ${MCA_SOURCE})
+else()
+    add_library(mca STATIC ${MCA_SOURCE})
+endif()
+
+find_program(CLANG_TIDY_EXE NAMES clang-tidy)
+if (NOT CLANG_TIDY_EXE STREQUAL "CLANG_TIDY_EXE-NOTFOUND")
+    set_target_properties(mca PROPERTIES CXX_CLANG_TIDY "${CLANG_TIDY_EXE}")
+endif()
+
+if (MCA_BUILD_TEST)
+    add_subdirectory(test)
+endif()

test/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.14)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_C_STANDARD_REQUIRED on)
+set(CMAKE_EXPORT_COMPILE_COMMANDS on)
+set(CMAKE_CXX_EXTENSIONS off)
+
+if (WIN32)
+    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+endif()
+
+
+include(FetchContent)
+FetchContent_Declare(
+  googletest
+  URL https://github.com/google/googletest/archive/03597a01ee50ed33e9dfd640b249b4be3799d395.zip)
+
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+# enable testing in cmake
+enable_testing()
+include(GoogleTest)
+
+aux_source_directory(src UNIT_TEST_SOURCE)
+add_executable(${PROJECT_NAME}_unit_test ${UNIT_TEST_SOURCE})
+target_link_libraries(
+    ${PROJECT_NAME}_unit_test
+    GTest::gtest_main
+    mca)
+gtest_discover_tests(${PROJECT_NAME}_unit_test)
+
+find_program(CLANG_TIDY_EXE NAMES clang-tidy)
+if (NOT CLANG_TIDY_EXE STREQUAL "CLANG_TIDY_EXE-NOTFOUND")
+    set_target_properties(${PROJECT_NAME}_unit_test PROPERTIES CXX_CLANG_TIDY "${CLANG_TIDY_EXE}")
+endif()

test/src/mca_test.cpp

@@ -0,0 +1 @@
+#include <gtest/gtest.h>