googletestを使ったテスト

cxx_cmake_ninja/CMakeLists.txt

@@ -18,6 +18,20 @@ if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
     message(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there. You may need to remove CMakeCache.txt. ")
 endif()
 
+#################################################################################
+
+include(FetchContent)
+FetchContent_Declare(
+  googletest
+  # Specify the commit you depend on and update it regularly.
+  URL https://github.com/google/googletest/archive/5376968f6948923e2411081fd9372e71a59d8e77.zip
+)
+# For Windows: Prevent overriding the parent project's compiler/linker settings
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+FetchContent_MakeAvailable(googletest)
+
+#################################################################################
+
 set(default_build_type "Debug")
 if(NOT CMAKE_BUILD_TYPE)
     message(STATUS "Setting build type to '${default_build_type}' as none was specified.")
@@ -67,6 +81,21 @@ add_test(
 
 #################################################################################
 
+add_executable(
+    bowling_game_test_gtest
+    lib/bowling_game/src/bowling_game.cpp
+    lib/bowling_game/test/gtest/bowling_game_test_gtest.cpp
+)
+
+target_link_libraries(bowling_game_test_gtest gtest_main)
+
+add_test(
+    NAME bowling_game_test_gtest
+    COMMAND ${TEST_LUNCHER} bowling_game_test_gtest $<TARGET_FILE:bowling_game_test_gtest>
+)
+
+#################################################################################
+
 add_executable(
     bowling_game_cli
     lib/bowling_game/src/bowling_game.cpp

cxx_cmake_ninja/lib/bowling_game/test/gtest/bowling_game_test_gtest.cpp

@@ -0,0 +1,89 @@
+#include "bowling_game.hpp"
+#include "gtest/gtest.h"
+
+namespace my {
+namespace project {
+namespace {
+
+// The fixture for testing class bowling_game.
+class bowling_game_test : public ::testing::Test {
+ protected:
+  // You can remove any or all of the following functions if their bodies would
+  // be empty.
+
+  bowling_game_test() {
+     // You can do set-up work for each test here.
+  }
+
+  ~bowling_game_test() override {
+     // You can do clean-up work that doesn't throw exceptions here.
+  }
+
+  // If the constructor and destructor are not enough for setting up
+  // and cleaning up each test, you can define the following methods:
+
+  void SetUp() override {
+     // Code here will be called immediately after the constructor (right
+     // before each test).
+  }
+
+  void TearDown() override {
+     // Code here will be called immediately after each test (right
+     // before the destructor).
+  }
+
+  // Class members declared here can be used by all tests in the test suite
+  // for bowling_game.
+
+  static void roll_many(bowling_game* pGame, int n, int pins){
+    int i;
+    for(i=0; i<n; i++){
+        pGame->roll(pins);
+  }
+}
+};
+
+TEST_F(bowling_game_test, gutter_game) {
+    bowling_game game;
+    roll_many(&game, 20, 0);
+    EXPECT_EQ(0, game.score());
+}
+
+TEST_F(bowling_game_test, all_ones) {
+    bowling_game game;
+    roll_many(&game, 20, 1);
+    EXPECT_EQ(20, game.score());
+}
+
+TEST_F(bowling_game_test, one_spare) {
+    bowling_game game;
+    game.roll(5);
+    game.roll(5);   /* spare */
+    game.roll(3);
+    roll_many(&game, 17, 0);
+    EXPECT_EQ(16, game.score());
+}
+
+TEST_F(bowling_game_test, one_strike) {
+    bowling_game game;
+    game.roll(10);
+    game.roll(3);
+    game.roll(4);
+    roll_many(&game, 16, 0);
+    EXPECT_EQ(24, game.score());
+}
+
+TEST_F(bowling_game_test, perfect_game) {
+    bowling_game game;
+    roll_many(&game, 12, 10);
+    EXPECT_EQ(300, game.score());
+}
+
+}  // namespace
+}  // namespace project
+}  // namespace my
+
+int main(int argc, char **argv) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}