使用PowerMockito.whennew的时候，注解preparefortest里面的类需要是mock的new代码所在的类的对象
Mock方法内部new出来的对象
测试目标代码：
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public class ClassUnderTest {
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public boolean callInternalInstance(String path) {
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File file = new File(path);
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return file.exists();
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}
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}
测试用例代码：
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@RunWith(PowerMockRunner.class)
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public class TestClassUnderTest {
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@Test
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@PrepareForTest(ClassUnderTest.class)
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public void testCallInternalInstance() throws Exception {
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File file = PowerMockito.mock(File.class);
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ClassUnderTest underTest = new ClassUnderTest();
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PowerMockito.whenNew(File.class).withArguments("bbb").thenReturn(file);
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PowerMockito.when(file.exists()).thenReturn(true);
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Assert.assertTrue(underTest.callInternalInstance("bbb"));
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}
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}
说明：当使用PowerMockito.whenNew方法时，必须加注解@PrepareForTest和@RunWith。注解@PrepareForTest里写的类是需要mock的new对象代码所在的类。
Mock方法内部new出来的对象
测试目标代码：
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public class ClassUnderTest { |
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public boolean callInternalInstance(String path) { |
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File file = new File(path); |
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return file.exists(); |
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} |
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} |
测试用例代码：
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@RunWith(PowerMockRunner.class) |
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public class TestClassUnderTest { |
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@Test |
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@PrepareForTest(ClassUnderTest.class) |
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public void testCallInternalInstance() throws Exception { |
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File file = PowerMockito.mock(File.class); |
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ClassUnderTest underTest = new ClassUnderTest(); |
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PowerMockito.whenNew(File.class).withArguments("bbb").thenReturn(file); |
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|
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PowerMockito.when(file.exists()).thenReturn(true); |
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Assert.assertTrue(underTest.callInternalInstance("bbb")); |
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} |
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} |
说明：当使用PowerMockito.whenNew方法时，必须加注解@PrepareForTest和@RunWith。注解@PrepareForTest里写的类是需要mock的new对象代码所在的类。
