Test for @RunWith(Parametrized.class).

Summary:
Wanted to try how Parametrized.class works with buck junit runner. It seems like
it already works pretty good so Im just adding a test for it.

Test Plan:
Run ant test
You may also try:
 * cd test/com/facebook/buck/junit/testdata/runwith/
 * buck test :ParametrizedTest
 * Check buck-out/gen/__java_test_ParametrizedTest_output__/com.example.ParametrizedTest.xml
 * Remember to rm -rf buck-out after that

test/com/facebook/buck/junit/BUCK

@@ -11,6 +11,7 @@ java_test(
     '//lib:hamcrest-library',
     '//lib:junit',
     '//src/com/facebook/buck/junit:junit',
+    '//src/com/facebook/buck/util:util',
     '//test/com/facebook/buck/testutil/integration:integration',
   ],
 )

test/com/facebook/buck/junit/RunWithAnnotationIntegrationTest.java

@@ -23,11 +23,18 @@
 import com.facebook.buck.testutil.integration.ProjectWorkspace;
 import com.facebook.buck.testutil.integration.ProjectWorkspace.ProcessResult;
 import com.facebook.buck.testutil.integration.TestDataHelper;
+import com.facebook.buck.util.XmlDomParser;
 
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
 
+import java.io.FileReader;
 import java.io.IOException;
 
 public class RunWithAnnotationIntegrationTest {
@@ -41,7 +48,6 @@ public void testSimpleSuiteRun2TestCases() throws IOException {
         this, "runwith", temporaryFolder);
     workspace.setUp();
 
-    // ExceedsAnnotationTimeoutTest should fail.
     ProcessResult suiteTestResult = workspace.runBuckCommand("test", "//:SimpleSuiteTest");
     assertEquals("Test should pass", 0, suiteTestResult.getExitCode());
     assertThat(suiteTestResult.getStderr(), containsString("2 Passed"));
@@ -53,7 +59,6 @@ public void testFailingSuiteRun3TestCasesWith1Failure() throws IOException {
         this, "runwith", temporaryFolder);
     workspace.setUp();
 
-    // ExceedsAnnotationTimeoutTest should fail.
     ProcessResult suiteTestResult = workspace.runBuckCommand("test", "//:FailingSuiteTest");
     assertEquals("Test should fail because of one of subtests failure",
         1,
@@ -62,4 +67,35 @@ public void testFailingSuiteRun3TestCasesWith1Failure() throws IOException {
     assertThat(suiteTestResult.getStderr(), containsString("1 Failed"));
   }
 
+  @Test
+  public void testParametrizedTestRun4Cases() throws IOException {
+    ProjectWorkspace workspace = TestDataHelper.createProjectWorkspaceForScenario(
+        this, "runwith", temporaryFolder);
+    workspace.setUp();
+
+    ProcessResult suiteTestResult = workspace.runBuckCommand("test", "//:ParametrizedTest");
+    suiteTestResult.assertExitCode("Test should pass", 0);
+    assertThat(suiteTestResult.getStderr(), containsString("4 Passed"));
+
+    Document doc = XmlDomParser.parse(new InputSource(new FileReader(workspace.getFile(
+        "buck-out/gen/__java_test_ParametrizedTest_output__/com.example.ParametrizedTest.xml"))),
+        false);
+
+    NodeList testNodes = doc.getElementsByTagName("test");
+    assertEquals(4, testNodes.getLength());
+
+    for (int i = 0; i < testNodes.getLength(); i++) {
+      Node testNode = testNodes.item(i);
+
+      String expectedName = String.format("parametrizedTest[%d]", i);
+      assertEquals(expectedName, testNode.getAttributes().getNamedItem("name").getTextContent());
+
+      String expectedStdout = String.format("Parameter: %d\n", i);
+      assertEquals(
+          expectedStdout,
+          ((Element) testNode).getElementsByTagName("stdout").item(0).getTextContent());
+    }
+
+  }
+
 }

test/com/facebook/buck/junit/testdata/runwith/BUCK

@@ -24,6 +24,14 @@ java_test(
   ],
 )
 
+java_test(
+  name = 'ParametrizedTest',
+  srcs = glob(['ParametrizedTest.java']),
+  deps = [
+    ':junit',
+  ],
+)
+
 prebuilt_jar(
   name = 'junit',
   binary_jar = 'junit-4.11.jar',

test/com/facebook/buck/junit/testdata/runwith/FailingSubtest.java

@@ -14,7 +14,7 @@
  * under the License.
  */
 
-package com.facebook.buck.junit.testdata.runwith;
+package com.example;
 
 import static org.junit.Assert.fail;
 

test/com/facebook/buck/junit/testdata/runwith/FailingSuiteTest.java

@@ -14,7 +14,7 @@
  * under the License.
  */
 
-package com.facebook.buck.junit.testdata.runwith;
+package com.example;
 
 import org.junit.runner.RunWith;
 import org.junit.runners.Suite;

test/com/facebook/buck/junit/testdata/runwith/ParametrizedTest.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2013-present Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+package com.example;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+@RunWith(Parameterized.class)
+public class ParametrizedTest {
+
+  private int number;
+
+  public ParametrizedTest(int number) {
+    this.number = number;
+  }
+
+  @Parameterized.Parameters
+  public static Collection<Object[]> data() {
+    Object[][] data = new Object[][] { { 0 }, { 1 }, { 2 }, { 3 } };
+    return Arrays.asList(data);
+  }
+
+  @Test
+  public void parametrizedTest() {
+    System.out.println("Parameter: " + number);
+  }
+
+}

test/com/facebook/buck/junit/testdata/runwith/SimpleSuiteTest.java

@@ -14,7 +14,7 @@
  * under the License.
  */
 
-package com.facebook.buck.junit.testdata.runwith;
+package com.example;
 
 import org.junit.runner.RunWith;
 import org.junit.runners.Suite;

test/com/facebook/buck/junit/testdata/runwith/Subtest1.java

@@ -14,7 +14,7 @@
  * under the License.
  */
 
-package com.facebook.buck.junit.testdata.runwith;
+package com.example;
 
 import org.junit.Test;
 

test/com/facebook/buck/junit/testdata/runwith/Subtest2.java

@@ -14,7 +14,7 @@
  * under the License.
  */
 
-package com.facebook.buck.junit.testdata.runwith;
+package com.example;
 
 import org.junit.Test;