How can we mock File.createTempFile() to return our mocked File object?
It should return our mocked file object instead of creating a new temp file and return new object.
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Knot
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Mock a RandomAccessFile with Mockito? – marc3l Mar 26 '20 at 17:45
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can you please elaborate it? – Knot Mar 26 '20 at 17:50
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It is not possible to mock static methods with Mockito. Either use powermockito or introduce indirection in your code – Lesiak Mar 26 '20 at 17:58
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Yeah. I mean powermockito – Knot Mar 26 '20 at 18:06
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@Lesiak can I am using powermockito only. Can to tell me how we can do it? – Knot Mar 26 '20 at 18:42
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can you put the class and method which u want to test, also the test code which you have written so far – pvpkiran Mar 26 '20 at 19:31
1 Answers
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This should do the trick
PowerMockito.mockStatic(File.class);
File mockFile = PowerMockito.mock(File.class);
when(File.createTempFile(anyString(), anyString())).thenReturn(mockFile);
cannot suggest more without the code or test class
pvpkiran
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1I am running into problems with this because it ends up calling File.createTempFile("","") which throws an exception because the prefix is too short. I'm not sure how to work around this. – Ocie Mitchell Nov 17 '20 at 19:58
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Annotate the test class with: @RunWith(PowerMockRunner.class) @PrepareForTest({ File.class }) – Antonio Fruci Jul 12 '23 at 08:12