Question

我需要模拟一个类的静态方法，并在我的测试中使用该模拟方法。现在看来我只能使用PowerMock来做到这一点。

我使用@RunWith（PowerMockRunner.class）和@PrepareForTest使用适当的类注释该类。

在我的测试中，我有一个@ClassRule，但在运行测试时，规则未正确应用。

我该怎么办？

    RunWith(PowerMockRunner.class)
@PowerMockIgnore({
    "javax.xml.*",
    "org.xml.*",
    "org.w3c.*",
    "javax.management.*"
})
@PrepareForTest(Request.class)
public class RoleTest {

    @ClassRule
    public static HibernateSessionRule sessionRule = new HibernateSessionRule(); // this Rule doesnt applied

Answer 1

我查看了PowerMock代码。看起来PowerMockRunner不支持@ClassRule。您可以尝试将HibernateSessionRule用作@Rule而不是@ClassRule。

@PrepareForTest(Request.class)
public class RoleTest {

  @Rule
  public HibernateSessionRule sessionRule = new HibernateSessionRule();

Answer 2

解决此问题的另一种方法是使用org.powermock.modules.junit4.PowerMockRunnerDelegate批注：

@RunWith(PowerMockRunner.class)
@PowerMockRunnerDelegate(BlockJUnit4ClassRunner.class)
@PowerMockIgnore({
    "javax.xml.*",
    "org.xml.*",
    "org.w3c.*",
    "javax.management.*"
})
@PrepareForTest(Request.class)
public class RoleTest {

    @ClassRule
    public static HibernateSessionRule sessionRule = new HibernateSessionRule(); // this Rule now applied

Answer 3

我发现另一种解决方案仅对PowerMock 1.4或主要版本有效。我将这些依赖项添加到了pom.xml

<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-module-junit4-rule</artifactId>
  <version>2.0.2</version>
  <scope>test</scope>
</dependency>
<dependency>
  <groupId>org.powermock</groupId>
  <artifactId>powermock-classloading-xstream</artifactId>
  <version>2.0.2</version>
  <scope>test</scope>
</dependency>

并更改了代码，删除了@RunWith批注并使用了一个简单的JUnit @Rule

@PrepareForTest(X.class);
public class MyTest {
    @Rule
    PowerMockRule rule = new PowerMockRule();

    // Tests goes here
    ...
}

有关更多信息，请访问PowerMock的documentation

PowerMockRunner不应用JUnit ClassRules

3 个答案: