(Android下使用)Google Test C++单元测试框架(二)

使用TEST CASE

TEST() and TEST_F() implicitly register their tests with googletest. So, unlike with many other C++ testing frameworks, you don't have to re-list all your defined tests in order to run them.

TEST()和TEST_F() 用GoogleTest隐式注册它们的测试。因此，与许多其他C++测试框架不同，您不必重新列出所有定义的测试以便运行它们。

After defining your tests, you can run them with RUN_ALL_TESTS() , which returns 0 if all the tests are successful, or 1 otherwise. Note that RUN_ALL_TESTS() runs all tests in your link unit -- they can be from different test cases, or even different source files.

定义测试后，可以使用RUN_ALL_TESTS() 运行它们，如果所有测试都成功，则返回0，否则返回1。

请注意，RUN_ALL_TESTS() 运行链接单元中的所有测试——它们可以来自不同的测试用例，甚至是不同的源文件。

When invoked, the RUN_ALL_TESTS() macro:

当使用RUN_ALL_TESTS() 时, 以下过程会被执行：

1. Saves the state of all googletest flags 保存所有GoogleTest标志的状态
2. Creates a test fixture object for the first test. 为第一个测试创建测试设备对象。
3. Initializes it via SetUp(). 通过Setup()初始化它。
4. Runs the test on the fixture object. 在fixture对象上运行测试。
5. Cleans up the fixture via TearDown(). 通过TearDown()清理fixture。
6. Deletes the fixture. 删除fixture。
7. Restores the state of all googletest flags 恢复所有GoogleTest标志的状态
8. Repeats the above steps for the next test, until all tests have run. 为下一个测试重复上述步骤，直到所有测试都运行完毕。

IMPORTANT: You must not ignore the return value of RUN_ALL_TESTS(), or you will get a compiler error. The rationale for this design is that the automated testing service determines whether a test has passed based on its exit code, not on its stdout/stderr output; thus your main() function must return the value of RUN_ALL_TESTS(). Also, you should call RUN_ALL_TESTS() only once. Calling it more than once conflicts with some advanced googletest features (e.g. thread-safe death tests) and thus is not supported.

注意：RUN_ALL_TESTS()返回值不能被忽略，而且使用过程中只能被调用一次。

当然在使用RUN_ALL_TESTS()之前要进行初始化操作。

testing::InitGoogleTest(&argc, argv);

android代码实例

工程路径为： androidCode/test/gtest_add

androidCode为源码根目录。

test.cpp:

#include "stdio.h"
#include "gtest/gtest.h"

int  add_sum(int a, int b)
{
    return a + b;
}

TEST(addsumTest, OneAddZeroInput) {
  EXPECT_EQ(add_sum(1,0), 1);
}

TEST(addsumTest, addSomeInput) {
  EXPECT_EQ(add_sum(1, 0), 1);
  EXPECT_EQ(add_sum(2, 0), 2);
  EXPECT_EQ(add_sum(3, 3), 6);
  EXPECT_EQ(add_sum(8, 1024), 40320);
}

int main(int argc, char **argv){
    testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

Android.mk:

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES :=  \
    test.cpp

LOCAL_CFLAGS := \
    -Wall

LOCAL_C_INCLUDES := \
    $(LOCAL_PATH)/../../external/googletest/googletest/include  

LOCAL_STATIC_LIBRARIES += libgtest libgtest_main
LOCAL_CLANG_CFLAGS += -Wno-error=unused-lambda-capture


LOCAL_MODULE:= bymanbu_test

include $(BUILD_EXECUTABLE)
include $(call all-makefiles-under, $(LOCAL_PATH))

编译

进入源码的根路径：

$ source build/envsetup.sh
$ lunch aosp_arm64-eng

将工程添加到test/下。 执行mma编译：

ＯＫ，大功告成，可以放到真机上去运行了，不过是native层，需要使用adb。Ｏ（∩＿∩）Ｏ哈哈～

执行结果