类：TestContext

🌐 Class: TestContext

每个测试函数都会传入一个 TestContext 实例，以便与测试运行器进行交互。然而，TestContext 构造函数并未作为 API 的一部分公开。

🌐 An instance of TestContext is passed to each test function in order to interact with the test runner. However, the TestContext constructor is not exposed as part of the API.