[英]Mocking static class with powermockito
即使我按照手册,我似乎无法使用PowerMock模拟静态方法。 我正试图嘲笑一个单身人士的神级。
测试代码如下:
@RunWith(PowerMockRunner.class)
@PrepareForTest(GodClass.class)
public class SomeTestCases {
@Test
public void someTest() {
PowerMockito.mockStatic(GodClass.class);
GodClass mockGod = mock(GodClass.class);
when(GodClass.getInstance()).thenReturn(mockGod);
// Some more things mostly like:
when(mockGod.getSomethingElse()).thenReturn(mockSE);
// Also tried: but doesn't work either
// when(GodClass.getInstance().getSomethingElse()).thenReturn(mockSE);
Testee testee = new Testee(); // Class under test
}
}
和受试者:
class Testee {
public Testee() {
GodClass instance = GodClass.getInstance();
Compoment comp = instance.getSomethingElse();
}
}
但是,这不起作用。 调试模式显示instance
为null
。 必须做些什么不同?
(是的,我知道代码很糟糕,但它是遗留的,我们希望在重构之前进行一些单元测试)
我刚刚进入了你所拥有的东西,它对我来说很好。
public class GodClass
{
private static final GodClass INSTANCE = new GodClass();
private GodClass() {}
public static GodClass getInstance()
{
return INSTANCE;
}
public String sayHi()
{
return "Hi!";
}
}
public class Testee
{
private GodClass gc;
public Testee() {
gc = GodClass.getInstance();
}
public String saySomething()
{
return gc.sayHi();
}
}
@RunWith(PowerMockRunner.class)
@PrepareForTest(GodClass.class)
public class GodClassTester
{
@Test
public void testThis()
{
PowerMockito.mockStatic(GodClass.class);
GodClass mockGod = PowerMockito.mock(GodClass.class);
PowerMockito.when(mockGod.sayHi()).thenReturn("Hi!");
PowerMockito.when(GodClass.getInstance()).thenReturn(mockGod);
Testee testee = new Testee();
assertEquals("Hi!", testee.saySomething());
}
}
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