package org.junit.internal.runners;
   
   import java.lang.reflect.InvocationTargetException;
   import java.util.Arrays;
   import java.util.List;
   
   import org.junit.runner.Description;
   import org.junit.runner.Runner;
   import org.junit.runner.notification.Failure;
  import org.junit.runner.notification.RunNotifier;
  import org.junit.runners.model.InitializationError;
  
  public class ErrorReportingRunner extends Runner {
      private final List<Throwable> causes;
  
      private final Class<?> testClass;
  
      public ErrorReportingRunner(Class<?> testClass, Throwable cause) {
          if (testClass == null) {
              throw new NullPointerException("Test class cannot be null");
          }
          this.testClass = testClass;
          causes = getCauses(cause);
      }
  
      @Override
      public Description getDescription() {
          Description description = Description.createSuiteDescription(testClass);
          for (Throwable each : causes) {
              description.addChild(describeCause(each));
          }
          return description;
      }
  
      @Override
      public void run(RunNotifier notifier) {
          for (Throwable each : causes) {
              runCause(each, notifier);
          }
      }
  
      @SuppressWarnings("deprecation")
      private List<Throwable> getCauses(Throwable cause) {
          if (cause instanceof InvocationTargetException) {
              return getCauses(cause.getCause());
          }
          if (cause instanceof InitializationError) {
              return ((InitializationError) cause).getCauses();
          }
          if (cause instanceof org.junit.internal.runners.InitializationError) {
              return ((org.junit.internal.runners.InitializationError) cause)
                      .getCauses();
          }
          return Arrays.asList(cause);
      }
  
      private Description describeCause(Throwable child) {
          return Description.createTestDescription(testClass,
                  "initializationError");
      }
  
      private void runCause(Throwable child, RunNotifier notifier) {
          Description description = describeCause(child);
          notifier.fireTestStarted(description);
          notifier.fireTestFailure(new Failure(description, child));
          notifier.fireTestFinished(description);
      }
  }