How to Mock System.getenv() with JUnit5

user_8591493 0
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I want to mock the System.getenv() method. I found only solutions for JUnit4 and PowerMockito. I use the following dependency:

    <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-junit-jupiter</artifactId>
        <version>2.23.0</version>
        <scope>test</scope>
    </dependency>

Here is my example of the test:

@ExtendWith(MockitoExtension.class) 
public class TestEnvVariable {

  @Mock
  System system;

  @Test
  public void shouldExpandPropertyContentToMatchingSysEnv() throws Exception {
      when(system.getenv("KEY")).thenReturn("VALUE");
      assertEquals("VALUE", "KEY");
  }
}

How to Mock System.getenv() with JUnit5?

junit-jupiter junit5 mockito java
2 Answers
user_7262020

It does not seem to be possible to mock System. See here

System Stubs might also be a good alternative for JUnit5

user_196179740
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