1 files changed, 63 insertions, 0 deletions
diff --git a/src/main/java/org/junit/experimental/results/PrintableResult.java b/src/main/java/org/junit/experimental/results/PrintableResult.java
new file mode 100644
index 0000000..8bc6f54
--- /dev/null
+++ b/src/main/java/org/junit/experimental/results/PrintableResult.java
@@ -0,0 +1,63 @@
+package org.junit.experimental.results;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.util.List;
+
+import org.junit.internal.TextListener;
+import org.junit.runner.JUnitCore;
+import org.junit.runner.Request;
+import org.junit.runner.Result;
+import org.junit.runner.notification.Failure;
+
+/**
+ * A test result that prints nicely in error messages.
+ * This is only intended to be used in JUnit self-tests.
+ * For example:
+ * 
+ * <pre>
+ *    assertThat(testResult(HasExpectedException.class), isSuccessful());
+ * </pre>
+ */
+public class PrintableResult {
+	/**
+	 * The result of running JUnit on {@code type}
+	 */
+	public static PrintableResult testResult(Class<?> type) {
+		return testResult(Request.aClass(type));
+	}
+	
+	/**
+	 * The result of running JUnit on Request {@code request}
+	 */
+	public static PrintableResult testResult(Request request) {
+		return new PrintableResult(new JUnitCore().run(request));
+	}
+	
+	private Result result;
+
+	/**
+	 * A result that includes the given {@code failures}
+	 */
+	public PrintableResult(List<Failure> failures) {
+		this(new FailureList(failures).result());
+	}
+
+	private PrintableResult(Result result) {
+		this.result = result;
+	}
+	
+	@Override
+	public String toString() {
+		ByteArrayOutputStream stream = new ByteArrayOutputStream();
+		new TextListener(new PrintStream(stream)).testRunFinished(result);
+		return stream.toString();
+	}
+
+	/**
+	 * Returns the number of failures in this result.
+	 */
+	public int failureCount() {
+		return result.getFailures().size();
+	}
+}
+\ No newline at end of file