Mock static methods from multiple class using PowerMock

Question

I know how to mock static methods from a class using PowerMock.
But I want to mock static methods from multiple classes in a test class using JUnit and PowerMock.

Can anyone tell me is it possible to do this and how to do it?

You just do it in the same way you mock methods from single classes. Where are you stuck? — artbristol, Apr 26 '12 at 07:42
When using powermock, you need to add this annotation to the test class @PrepareForTest(ClassThatContainsStaticMethod.class). But we cannot specify multiple annotations. So how to do it? — Newbie, Apr 26 '12 at 08:16

score 271 · Accepted Answer · answered Apr 26 '12 at 08:19

271

Just do @PrepareForTest({Class1.class,Class2.class}) for multiple classes.

answered Apr 26 '12 at 08:19

artbristol

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curly braces! that's what I was missing. – sudocoder Jan 17 '14 at 20:28
2

Also don't forget to switch to PowerMockRunner with `@RunWith(PowerMockRunner.class)` on the class level – Nikita Barishok Oct 27 '16 at 14:22
1

@NikitaBarishok not always needed. You can define a rule instead to make above work -`@Rule public PowerMockRule rule = new PowerMockRule();` – Aniket Thakur Apr 09 '17 at 15:10
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in kotlin `@PrepareForTest(Class1::class, Class2::class))` – Ryhan Sep 13 '17 at 20:40
It is also better to use `@PrepareOnlyThisForTest` instead of `@PrepareForTest`. The latter also modifies superclasses, which is not normally needed. – Leo Dec 13 '17 at 09:11
But I am getting **java.lang.Exception: No tests found matching [{ExactMatcher:fDisplayName=test], {ExactMatcher:fDisplayName=test(aero.tav.tams.task.manager.PMTest)], {LeadingIdentifierMatcher:fClassName=aero.tav.tams.task.manager.PMTest,fLeadingIdentifier=test]] from org.junit.internal.requests.ClassRequest@dc9876b at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:40)** when I add a specific class. If I remove the class it is working. – ceyun Jun 03 '20 at 11:55

score 14 · Answer 2 · answered Oct 14 '14 at 08:37

14

@Test
 @PrepareForTest({Class1.class, Class2.class})
 public final void handleScript() throws Exception {
    PowerMockito.mockStatic(Class1.class);
    PowerMockito.mockStatic(Class2.class);

etc...

answered Oct 14 '14 at 08:37

arush436

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As for `PowerMock 1.6.5` there are problems using `@PrepareForTest` on method level (only works on class level for me) – Nikita Barishok Oct 27 '16 at 14:24

score 4 · Answer 3 · answered Dec 25 '19 at 10:27

4

If you are using kotlin, the syntax is this

@PrepareForTest(ClassA::class, ClassB::class)

answered Dec 25 '19 at 10:27

Ezio

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score 2 · Answer 4 · answered Nov 02 '16 at 19:18

In java with powermock/junit, use @PrepareForTest({}) with as many static classes as you want as array ({}).

@RunWith(PowerMockRunner.class)
@PrepareForTest({XmlConverterA.class, XmlConverterB.class})
class TransfersServiceExceptionSpec {

}

I have used powermock with in scala/junit, as scalatest does not have integration with powermock.

@RunWith(classOf[PowerMockRunner])
@PrepareForTest(Array(classOf[XmlConverterA], classOf[XmlConverterB]))
class TransfersServiceExceptionSpec {

  @Test
  def test() {
  }
}

Mock static methods from multiple class using PowerMock

4 Answers4