package junit.tests.runner;
   
   import java.io.ByteArrayOutputStream;
   import java.io.PrintStream;
   
   import junit.framework.TestCase;
   import junit.textui.ResultPrinter;
   import junit.textui.TestRunner;
   
  /**
   * Test invoking a single test method of a TestCase.
   */
  public class TextRunnerSingleMethodTest extends TestCase {
  
      static boolean fgWasInvoked;
  
      public static class InvocationTest extends TestCase {
  
          public void testWasInvoked() {
              TextRunnerSingleMethodTest.fgWasInvoked = true;
          }
  
          public void testNotInvoked() {
              fail("Shouldn't get here.");
          }
      }
  
      public void testSingle() throws Exception {
          TestRunner t = new TestRunner();
          t.setPrinter(new ResultPrinter(new PrintStream(new ByteArrayOutputStream())));
          String[] args = {
                  "-m", "junit.tests.runner.TextRunnerSingleMethodTest$InvocationTest.testWasInvoked"
          };
          fgWasInvoked = false;
          t.start(args);
          assertTrue(fgWasInvoked);
      }
  
  }