我想用GTEST创建一个用于单位测试的Bazel C ++项目。

Question

，我正在Linux下运行）

现在，Googletest提供了一个构建文件，这一点甚至更容易：

在workspace

Answer 1

load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
git_repository(
    name = "gtest",
    remote = "https://github.com/google/googletest",
    branch = "v1.10.x",
)

build

cc_test (
    name = "hello_test",
    srcs = [
        "hello_test.cc",
    ],
    deps = [
        "@gtest//:gtest",
        "@gtest//:gtest_main" # Only if hello_test.cc has no main()
    ],
)

项目结构是：

.
├── bin
│   ├── BUILD
│   ├── hello.cpp
├── MyLib
│   ├── BUILD
│   ├── message.hpp
│   ├── message.cpp
│   ├── ... 
├── test
│   ├── BUILD
│   ├── message_test.cpp
│   ├── ... 
├── gmock.BUILD
└── WORKSPACE

与Bazel+GTEST有关的files

Answer 2

workspace

您从github下载gtest：

new_git_repository(
    name = "googletest",
    build_file = "gmock.BUILD",
    remote = "https://github.com/google/googletest",
    tag = "release-1.8.0",
)

您定义了下面定义的gmock构建文件：

• gmock.build

该构建文件负责编译GTEST/GMOCK：

cc_library(
      name = "gtest",
      srcs = [
            "googletest/src/gtest-all.cc",
            "googlemock/src/gmock-all.cc",
      ],
      hdrs = glob([
          "**/*.h",
          "googletest/src/*.cc",
          "googlemock/src/*.cc",
      ]),
      includes = [
          "googlemock",
          "googletest",
          "googletest/include",
          "googlemock/include",
      ],
      linkopts = ["-pthread"],
      visibility = ["//visibility:public"],
  )

  cc_library(
      name = "gtest_main",
      srcs = ["googlemock/src/gmock_main.cc"],
      linkopts = ["-pthread"],
      visibility = ["//visibility:public"],
      deps = [":gtest"],
  )

• 测试/构建 该构建文件生成测试：

cc_test(
    name = "MyTest",
    srcs = glob(["**/*.cpp"]),
    deps = ["//MyLib:MyLib",
           "@googletest//:gtest_main"],
)

-test/message_test.cpp

文件定义为：

#include "gtest/gtest.h"

#include "MyLib/message.hpp"

TEST(message_test,content)
{
  EXPECT_EQ(get_message(),"Hello World!");
}

• 就是这样！其他文件像往常一样定义： for支持示例的文件

Mylib/build

创建

libmylib.so

和

libmylib.a

库。

cc_library(
    name="MyLib",
    hdrs=glob(["**/*.hpp"]),
    srcs=glob(["**/*.cpp"]),
    visibility = ["//visibility:public"],
)

以基本的mess.hpp

• #include <string>
  
  std::string get_message();

和message.cpp

#include "MyLib/message.hpp"

std::string get_message()
{
   return "Hello World!";
}

example. bin/build

创建hello可执行。

cc_binary(
    name = "hello",
    srcs = ["hello.cpp"],
    deps = ["//MyLib:MyLib"],
)

是：

#include "MyLib/message.hpp"

#include <iostream>

int main()
{
  std::cout << "\n" << get_message() << std::endl;

  return EXIT_SUCCESS;
}

usage：

所有目标：

这也将从其github存储库中下载gtest并编译IT
• bazel build ...

检查Hello Target：

您可以使用以下方式运行以下操作：

bazel run bin:hello

使用GTEST进行测试

这是此注释的重点：bazel test ... --test_output=errors

您应该得到类似的东西：

INFO: Analysed 3 targets (0 packages loaded).
INFO: Found 2 targets and 1 test target...
INFO: Elapsed time: 0.205s, Critical Path: 0.05s
INFO: Build completed successfully, 2 total actions
//test:MyTest   
PASSED in 0.0s
Executed 1 out of 1 test: 1 test passes.

• 改用结果

为您的放松，我创建了一个包含此示例的

githubrepo

。我希望它可以开箱即用。
    

• current推荐的实践是要使用
http_archive

避免根据系统

git

WORKSPACE

# 5376968f6948923e2411081fd9372e71a59d8e77 is the commit sha for v1.12.0. 
# Periodically update to the latest to "live at head"
http_archive(
    name = "com_google_googletest",
    sha256 = "199e68f9dff997b30d420bf23cd9a0d3f66bfee4460e2cd95084a2c45ee00f1a",
    strip_prefix = "googletest-5376968f6948923e2411081fd9372e71a59d8e77",
    urls = ["https://github.com/google/googletest/archive/5376968f6948923e2411081fd9372e71a59d8e77.zip"],
)

• 并利用
重复的cache

.

。

test/BUILD

cc_test(
    name = "test_greet",
    srcs = ["greeting_test.cpp"],
    deps = [
        "//src:greeting",
        "@com_google_googletest//:gtest_main",
    ],
)

C++基于Bazel

的示例 这是基于Bazel和Google测试的C ++项目的示例存储库。它还介绍了如何跨平台进行编码和测试。我认为它可以满足您的需求。