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package junit.framework;

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * A TestFailure collects a failed test together with
 * the caught exception.
 *
 * @see TestResult
 */
public class TestFailure extends Object
{
	protected Test fFailedTest;
	protected Throwable fThrownException;

	/**
	 * Constructs a TestFailure with the given test and exception.
	 */
	public TestFailure(Test failedTest, Throwable thrownException)
	{
		fFailedTest= failedTest;
		fThrownException= thrownException;
	}

	/**
	 * Gets the failed test.
	 */
	public Test failedTest()
	{
		return fFailedTest;
	}

	/**
	 * Gets the thrown exception.
	 */
	public Throwable thrownException()
	{
		return fThrownException;
	}

	/**
	 * Returns a short description of the failure.
	 */
	@Override
	public String toString()
	{
		StringBuffer buffer= new StringBuffer();
		buffer.append(fFailedTest + ": " + fThrownException.getMessage());
		return buffer.toString();
	}

	public String trace()
	{
		StringWriter stringWriter= new StringWriter();
		PrintWriter writer= new PrintWriter(stringWriter);
		thrownException().printStackTrace(writer);
		StringBuffer buffer= stringWriter.getBuffer();
		return buffer.toString();
	}

	public String exceptionMessage()
	{
		return thrownException().getMessage();
	}

	public boolean isFailure()
	{
		return thrownException() instanceof AssertionFailedError;
	}
}