MigrateAssertToMatcherAssert - Intellij Community

Reports calls to Assert.assertEquals(), Assert.assertTrue(), etc. methods which can be migrated to Hamcrest declarative style Assert.assertThat() calls.

For example:

public class SubstantialTest {
    @Test
    public void testContents(Collection<String> c, String s) {
      Assert.assertTrue(c.contains(s));
      Assert.assertEquals(c, s);
      Assert.assertNotNull(c);
      Assert.assertNull(c);
      Assert.assertFalse(c.contains(s));
    }
  }

A quick-fix is provided to perform the migration:

public class SubstantialTest {
    @Test
    public void testContents(Collection<String> c, String s) {
      assertThat(c, hasItem(o));
      assertThat(o, is(c));
      assertThat(c, notNullValue());
      assertThat(c, nullValue());
      assertThat(c, not(hasItem(o)));
    }
  }

This inspection requires that the Hamcrest library is available on the classpath.

Use the Statically import matcher's methods option to specify if you want the quick-fix to statically import the Hamcrest matcher methods.