package junit.tests.runner;
   
   import java.io.File;
   import java.io.IOException;
   import java.io.InputStream;
   import java.io.OutputStream;
   import java.io.PrintStream;
   
   import junit.framework.TestCase;
  import junit.framework.TestResult;
  import junit.framework.TestSuite;
  
  public class TextRunnerTest extends TestCase {
  
      public void testFailure() throws Exception {
          execTest("junit.tests.framework.Failure", false);
      }
  
      public void testSuccess() throws Exception {
          execTest("junit.tests.framework.Success", true);
      }
  
      public void testError() throws Exception {
          execTest("junit.tests.BogusDude", false);
      }
  
      void execTest(String testClass, boolean success) throws Exception {
          String java = System.getProperty("java.home") + File.separator + "bin" + File.separator + "java";
          String cp = System.getProperty("java.class.path");
          //use -classpath for JDK 1.1.7 compatibility
          String[] cmd = {java, "-classpath", cp, "junit.textui.TestRunner", testClass};
          Process p = Runtime.getRuntime().exec(cmd);
          InputStream i = p.getInputStream();
          while ((i.read()) != -1)
              ; //System.out.write(b);
          assertTrue((p.waitFor() == 0) == success);
          if (success) {
              assertTrue(p.exitValue() == 0);
          } else {
              assertFalse(p.exitValue() == 0);
          }
      }
  
      public void testRunReturnsResult() {
          PrintStream oldOut = System.out;
          System.setOut(new PrintStream(
                  new OutputStream() {
                      @Override
                      public void write(int arg0) throws IOException {
                      }
                  }
          ));
          try {
              TestResult result = junit.textui.TestRunner.run(new TestSuite());
              assertTrue(result.wasSuccessful());
          } finally {
              System.setOut(oldOut);
          }
      }
  
  
  }