Different Parametrized arguments for different Tests JUNIT

Question

Okay so I'm building Test Cases for my project and I'm Using JUnit for testing. Now the problem I'm facing is that I need different set of arguments for different test cases of the same file.

public class ForTesting{
    //Test 1 should run on ips {1, true} and {2,true}
    @Test
    public void Test1()
    {
        //Do first Test case
    }
    //Test 2 should run on ips {3,true} and {4,true}
    @Test
    public void Test2()
    {
        //Do another Test case
    }
}

I know I can provide multiple arguments using parametrized arguments but the problem is the same set of arguments run for all the test cases. Is there a way to do this?

Morfic · Accepted Answer · 2016-07-05 11:42:52Z

3

If you're not looking ONLY for standard junit parametrized tests, and depending on your company's legal policies you can use (at least) the following 2 libraries, which make things easier (both to implement and read):

1) JUnitParams (Apache 2)

@RunWith(JUnitParamsRunner.class)
public class PersonTest {

  @Test
  @Parameters({"17, false", 
               "22, true" })
  public void shouldDecideAdulthood(int age, boolean expectedAdulthood) throws Exception {
    assertThat(new Person(age).isAdult(), is(expectedAdulthood));
  }
}

2) Zohhak (LGPL) inspired by JUnit params but bringing some more sugar to the table (easy separator config, converters, etc)

@RunWith(ZohhakRunner.class)
public class PersonTest {

  @TestWith({"17, false", 
             "22, true" })
  public void shouldDecideAdulthood(int age, boolean expectedAdulthood) throws Exception {
    assertThat(new Person(age).isAdult(), is(expectedAdulthood));
  }
}

Credits: Examples above have been shamelessly copied and adjusted from JUnitParams' readme.

answered Jul 5, 2016 at 11:42

Morfic

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2 Comments

Rohan Over a year ago

Thanks thats what i needed!

Morfic Over a year ago

@moldovean not yet, just read about it a while ago, but did not have the context for it so far

John B · Accepted Answer · 2016-06-30 22:53:55Z

1

Few options:

Use Theories.

In a @Theory, use Assume.assumeThat.

@Theory
public void shouldPassForSomeInts(int param) {
     Assume.assumeTrue(param == 1 || param == 2);
}

@Theory
public void shouldPassForSomeInts(int param) {
     ...
}

Or use @TestedOn.

@Theory
public void shouldPassForSomeInts(@TestedOn(ints={1, 2}) int param) {
     ...
}

@Theory
public void shouldPassForSomeInts(@TestedOn(ints={3,4}) int param) {
     ...
}

answered Jun 30, 2016 at 22:53

John B

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