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 com.android.server.backup.encryption.chunking;
  
  import static org.junit.Assert.assertEquals;
  import static org.testng.Assert.assertThrows;
  
  import android.platform.test.annotations.Presubmit;
  
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.robolectric.RobolectricTestRunner;
  
  /** Tests for {@link ByteRange}. */
  @RunWith(RobolectricTestRunner.class)
  @Presubmit
  public class ByteRangeTest {
      @Test
      public void getLength_includesEnd() throws Exception {
          ByteRange byteRange = new ByteRange(5, 10);
  
          int length = byteRange.getLength();
  
          assertEquals(6, length);
      }
  
      @Test
      public void constructor_rejectsNegativeStart() {
          assertThrows(IllegalArgumentException.class, () -> new ByteRange(-1, 10));
      }
  
      @Test
      public void constructor_rejectsEndBeforeStart() {
          assertThrows(IllegalArgumentException.class, () -> new ByteRange(10, 9));
      }
  
      @Test
      public void extend_withZeroLength_throwsException() {
          ByteRange byteRange = new ByteRange(5, 10);
  
          assertThrows(IllegalArgumentException.class, () -> byteRange.extend(0));
      }
  }
  