unit-testing - 单元测试 C++ SetUp() 和 TearDown()

Question

我目前正在使用 google mock 学习单元测试virtual void SetUp()的常用用途是什么？和 virtual void TearDown()在谷歌模拟中？带有代码的示例场景会很好。

Answer 1

它可以在每个测试的开始和结束时分解您想要执行的代码，以避免重复。

例如 :

namespace {
  class FooTest : public ::testing::Test {

  protected:
    Foo * pFoo_;

    FooTest() {
    }

    virtual ~FooTest() {
    }

    virtual void SetUp() {
      pFoo_ = new Foo();
    }

    virtual void TearDown() {
      delete pFoo_;
    }

  };

  TEST_F(FooTest, CanDoBar) {
      // You can assume that the code in SetUp has been executed
      //         pFoo_->bar(...)
      // The code in TearDown will be run after the end of this test
  }

  TEST_F(FooTest, CanDoBaz) {
     // The code from SetUp will have been executed *again*
     // pFoo_->baz(...)
      // The code in TearDown will be run *again* after the end of this test

  }

} // Namespace