content: /*
   * Copyright (C) 2018 The Android Open Source Project
   *
   * 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 androidx.test.internal.platform.util;
  
  import androidx.annotation.RestrictTo;
  import androidx.test.internal.platform.ServiceLoaderWrapper;
  import java.io.Serializable;
  import java.util.Map;
  
  /**
   * A utility for outputting execution data files back to the test environment/CI solution.
   *
   * @hide
   */
  @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) // used by espresso and robolectric
  public class TestOutputEmitter {
  
    // create a handler for TestOutputEmitter calls. By default calls are no-ops
    private static final TestOutputHandler debugHandler =
        ServiceLoaderWrapper.loadSingleService(
            TestOutputHandler.class,
            () ->
                new TestOutputHandler() {
                  @Override
                  public void dumpThreadStates(String outputName) {}
  
                  @Override
                  public boolean takeScreenshot(String outputName) {
                    return false;
                  }
  
                  @Override
                  public boolean captureWindowHierarchy(String outputName) {
                    return false;
                  }
  
                  @Override
                  public boolean addOutputProperties(Map<String, Serializable> properties) {
                    return false;
                  }
                });
  
    private TestOutputEmitter() {}
  
    /** Output the stack traces of all running threads back to the execution environment. */
    public static void dumpThreadStates(String outputName) {
      debugHandler.dumpThreadStates(outputName);
    }
  
    /** Output a screenshot back to the execution environment. */
    public static boolean takeScreenshot(String outputName) {
      return debugHandler.takeScreenshot(outputName);
    }
  
    /** Output the window hierarchy XML dump to the execution environment. */
    public static boolean captureWindowHierarchy(String outputName) {
      return debugHandler.captureWindowHierarchy(outputName);
    }
  
    /** Add output properties for the test. */
    public static boolean addOutputProperties(Map<String, Serializable> properties) {
      return debugHandler.addOutputProperties(properties);
    }
  }
  