如何模拟使用PowerMock进行测试的专用方法?

如何模拟使用PowerMock进行测试的专用方法?我有一个类,我想使用一个调用私有方法的公共方法进行测试。我想假设私有方法可以正常工作。例如,我想要类似的东西doReturn....when...。我发现有使用PowerMock的解决方案,但该解决方案对我不起作用。怎么做?有人有这个问题吗?

回答:

我在这里没有问题。使用Mockito API的以下代码,我做到了:

public class CodeWithPrivateMethod {

public void meaningfulPublicApi() {

if (doTheGamble("Whatever", 1 << 3)) {

throw new RuntimeException("boom");

}

}

private boolean doTheGamble(String whatever, int binary) {

Random random = new Random(System.nanoTime());

boolean gamble = random.nextBoolean();

return gamble;

}

}

这是JUnit测试:

import org.junit.Test;

import org.junit.runner.RunWith;

import org.powermock.api.mockito.PowerMockito;

import org.powermock.core.classloader.annotations.PrepareForTest;

import org.powermock.modules.junit4.PowerMockRunner;

import static org.mockito.Matchers.anyInt;

import static org.mockito.Matchers.anyString;

import static org.powermock.api.mockito.PowerMockito.when;

import static org.powermock.api.support.membermodification.MemberMatcher.method;

@RunWith(PowerMockRunner.class)

@PrepareForTest(CodeWithPrivateMethod.class)

public class CodeWithPrivateMethodTest {

@Test(expected = RuntimeException.class)

public void when_gambling_is_true_then_always_explode() throws Exception {

CodeWithPrivateMethod spy = PowerMockito.spy(new CodeWithPrivateMethod());

when(spy, method(CodeWithPrivateMethod.class, "doTheGamble", String.class, int.class))

.withArguments(anyString(), anyInt())

.thenReturn(true);

spy.meaningfulPublicApi();

}

}

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