AndroidTestResult.java

/*
 * Copyright (C) 2014 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.runner.junit3;

import android.app.Instrumentation;
import android.os.Bundle;
import android.test.AndroidTestCase;
import android.test.InstrumentationTestCase;
import java.util.concurrent.TimeoutException;
import junit.framework.AssertionFailedError;
import junit.framework.Protectable;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestResult;

/** A specialized {@link TestResult} that injects Android constructs into the test if necessary. */
class AndroidTestResult extends DelegatingTestResult {

  private final Instrumentation instr;
  private final Bundle bundle;

  private long timeout;

  AndroidTestResult(Bundle bundle, Instrumentation instr, TestResult result) {
    super(result);
    this.bundle = bundle;
    this.instr = instr;
  }

  @Override
  protected void run(final TestCase test) {
    if (test instanceof AndroidTestCase) {
      ((AndroidTestCase) test).setContext(instr.getTargetContext());
    }
    if (test instanceof InstrumentationTestCase) {
      ((InstrumentationTestCase) test).injectInstrumentation(instr);
    }
    super.run(test);
  }

  /**
   * Save the timeout value to be able to report a more user friendly error in case a timed out
   * test.
   *
   * @param timeout the timeout value
   * @see #runProtected(Test, Protectable)
   */
  void setCurrentTimeout(long timeout) {
    this.timeout = timeout;
  }

  /**
   * Timeout aware copy of {@link TestResult#runProtected(Test, Protectable)}. In case of a timed
   * out test an {@link InterruptedException} will be thrown and handled to report a more user
   * friendly error back to the user.
   */
  @Override
  public void runProtected(final Test test, Protectable p) {
    try {
      p.protect();
    } catch (AssertionFailedError e) {
      super.addFailure(test, e);
    } catch (ThreadDeath e) { // don't catch ThreadDeath by accident
      throw e;
    } catch (InterruptedException e) {
      super.addError(
          test,
          new TimeoutException(String.format("Test timed out after %d milliseconds", timeout)));
    } catch (Throwable e) {
      super.addError(test, e);
    }
  }
}