package org.junit.runner;
   
   import org.junit.Test;
   import org.junit.tests.TestSystem;
   
   import static org.hamcrest.CoreMatchers.instanceOf;
   import static org.hamcrest.CoreMatchers.is;
   import static org.hamcrest.MatcherAssert.assertThat;
   
  public class JUnitCoreTest {
      @Test
      public void shouldAddFailuresToResult() {
          JUnitCore jUnitCore = new JUnitCore();
  
          Result result = jUnitCore.runMain(new TestSystem(), "NonExistentTest");
  
          assertThat(result.getFailureCount(), is(1));
          assertThat(result.getFailures().get(0).getException(), instanceOf(IllegalArgumentException.class));
      }
  }