在googletest中参数化和共享资源测试

时间:2016-11-07 21:27:30

标签: c++ templates googletest static-members

使用googletest框架我尝试创建一个继承的fixture类,以便进行参数化和共享资源测试。

class FixtDBadminConnShared : public ::testing::Test {
  public:
    static void SetUpTestCase() {
      shared_conn_ = new ::DB::DB_connection();
    }
    static void TearDownTestCase() {
      delete shared_conn_;
    }
    static ::DB::DB_connection * shared_conn_;
    };
::DB::DB_connection * FixtDBadminConnShared::shared_conn_ = nullptr;

class FixtDBadminConnExec :public FixtDBadminConnShared, public ::testing::TestWithParam<string> 
  {
  protected:
    using FixtDBadminConnShared::SetUpTestCase;
    using FixtDBadminConnShared::TearDownTestCase;

    void SetUp() override {
      query_ = GetParam();
    }
    string query_;
  };       

试着打电话给考试:

TEST_P(FixtDBadminConnExec, SelectWithoutParam) {
 //do smth
}
INSTANTIATE_TEST_CASE_P(QueriesOrbital0param, FixtDBadminConnExec,
::testing::Values( string{ "SELECT * from my_table;" }));

我收到了下一个错误

Error   C2594   'return': ambiguous conversions from 'FixtDBadminConnExec_SelectWithoutParam_Test *' to 'testing::Test *'   gtest_mytest    e:\libs\googletest\googletest\include\gtest\internal\gtest-param-util.h 415 

以下是 gtest-param-util.h 的一部分,上的415行返回新的TestClass()

template <class TestClass>
class ParameterizedTestFactory : public TestFactoryBase {
 public:
  typedef typename TestClass::ParamType ParamType;
  explicit ParameterizedTestFactory(ParamType parameter) :
      parameter_(parameter) {}
  virtual Test* CreateTest() {
    TestClass::SetParam(&parameter_);
    return new TestClass();
  }

 private:
  const ParamType parameter_;

  GTEST_DISALLOW_COPY_AND_ASSIGN_(ParameterizedTestFactory);
};

所以,我想这个问题也可能是我想要使用参数化测试(TEST_P宏)和共享资源测试(TEST_F宏)。我怎么能这样做?如果可以的话?

1 个答案:

答案 0 :(得分:3)

你的问题是TestWithParam&lt;&gt;继承自testing :: Test并且存在模糊的转换。相反,继承自WithParamInterface&lt;&gt;