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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.junitxml;
     18 
     19 import org.junit.internal.TextListener;
     20 import org.junit.runner.JUnitCore;
     21 import org.junit.runner.Result;
     22 
     23 import java.io.FileNotFoundException;
     24 import java.io.FileOutputStream;
     25 import java.io.IOException;
     26 import java.util.stream.Stream;
     27 
     28 /**
     29  * A JUnit runner that is intended to use as replacement of JUnitCore
     30  * which in addition to printing the test failures to stdout, will
     31  * write the results in XML format to the path specified in the env
     32  * variable XML_OUTPUT_FILE.
     33  *
     34  * <p>To use this runner:
     35  *     {@code TEST_WORKSPACE=[...]
     36  *            XML_OUTPUT_FILE=[...]
     37  *            java -cp junitxml.jar [...] \
     38  *            com.android.junitxml.JUnitXmlRunner [Test classes]}
     39  */
     40 public class JUnitXmlRunner {
     41 
     42     private static XmlRunListener getRunListener() {
     43         String outputFile = System.getenv("XML_OUTPUT_FILE");
     44         String suiteName = System.getenv("TEST_WORKSPACE");
     45         if (outputFile != null && outputFile.length() > 0) {
     46             try {
     47                 return new XmlRunListener(
     48                         new FileOutputStream(outputFile),
     49                         suiteName != null ? suiteName : "Unknown test suite");
     50             } catch (FileNotFoundException e) {
     51                 e.printStackTrace();
     52             }
     53         }
     54         return null;
     55     }
     56 
     57     public static void main(String... args) {
     58         JUnitCore core = new JUnitCore();
     59         try {
     60             TextListener textListener = new TextListener(System.out);
     61             core.addListener(textListener);
     62             XmlRunListener xmlListener = getRunListener();
     63             if (xmlListener != null) {
     64                 core.addListener(xmlListener);
     65             }
     66             Result result = core.run(Stream.of(args)
     67                     .map(test -> {
     68                         try {
     69                             return Class.forName(test);
     70                         } catch (ClassNotFoundException e) {
     71                             throw new RuntimeException(e);
     72                         }
     73                     })
     74                     .toArray(Class[]::new));
     75             if (xmlListener != null) {
     76                 xmlListener.endTestSuite();
     77             }
     78             System.exit(result.wasSuccessful() ? 0 : 1);
     79         } catch (IOException e) {
     80             throw new RuntimeException(e);
     81         }
     82     }
     83 }
     84 
     85