content: /*
   * Copyright 2017 Google 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.google.android.things.contrib.driver.cap1xxx;
  
  import static junit.framework.Assert.assertEquals;
  import static junit.framework.Assert.assertNull;
  
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.ExpectedException;
  import org.mockito.invocation.InvocationOnMock;
  
  import java.lang.reflect.Method;
  
  public class ArrayFillingAnswerTest {
  
      @Rule
      public ExpectedException mExpectedException = ExpectedException.none();
  
      @Test
      public void fillsArrayAndReturnsNull() throws Throwable {
          final byte value = 42;
          ArrayFillingAnswer answer = new ArrayFillingAnswer(value);
          final byte[] toBeFilled = new byte[10];
  
          InvocationOnMock invocation = new InvocationOnMock() {
              @Override
              public Object getMock() {
                  return null;
              }
  
              @Override
              public Method getMethod() {
                  return null;
              }
  
              @Override
              public Object[] getArguments() {
                  return new Object[] {
                          null,
                          toBeFilled,
                          null
                  };
              }
  
              @Override
              public <T> T getArgumentAt(int index, Class<T> clazz) {
                  return (T) getArguments()[index];
              }
  
              @Override
              public Object callRealMethod() throws Throwable {
                  return null;
              }
          };
  
          assertNull(answer.answer(invocation));
          for (byte b : toBeFilled) {
              assertEquals(value, b);
          }
      }
  }
  