text: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You 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 libcore.java.io;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  public class OldInputStreamTest extends junit.framework.TestCase {
  
      public static final String testString = "Lorem ipsum dolor sit amet,\n" +
          "consectetur adipisicing elit,\nsed do eiusmod tempor incididunt ut" +
          "labore et dolore magna aliqua.\n";
  
      private InputStream is;
  
      class MockInputStream extends java.io.InputStream {
  
          private byte[] input;
          private int position;
  
          public MockInputStream() {
              super();
              input = testString.getBytes();
              position = 0;
          }
  
          public int read() throws IOException {
              int result = -1;
              if (position < input.length) {
                  result = input[position];
                  position++;
              }
              return result;
          }
      }
  
      public void test_Constructor() {
          try {
              InputStream myIS = new MockInputStream();
              myIS.close();
          } catch (Exception e) {
              fail("Unexpected exception: " + e.getMessage());
          }
      }
  
      public void test_available() throws IOException {
          assertEquals(is.available(), 0);
      }
  
      public void test_close() {
          try {
              is.close();
          } catch (Exception e) {
              fail("Unexpected exception: " + e.getMessage());
          }
      }
  
      public void test_markI() {
          try {
              is.mark(10);
          } catch (Exception e) {
              fail("Unexpected exception: " + e.getMessage());
          }
      }
  
      public void test_markSupported() throws IOException {
          assertFalse("markSupported() has returned the wrong default value.",
                  is.markSupported());
      }
  
      public void test_read$B() throws IOException {
          byte[] b = new byte[10];
          byte[] ref = testString.getBytes();
          boolean equal = true;
          int bytesRead = 0;
          int i;
  
          // Test 1: This read operation should complete without an error.
          assertEquals("Test 1: Incorrect count of bytes read.",
                  is.read(b), 10);
  
          for (i = 0; i < 10; i++) {
              equal &= (b[i] == ref[i]);
          }
          assertTrue("Test 1: Wrong bytes read.", equal);
  
          // Test 2: Test that the correct number of bytes read is returned
          // if the source has less bytes available than fit in the buffer.
          b = new byte[ref.length];
          bytesRead = is.read(b);
          assertEquals("Test 2: Incorrect count of bytes read.",
                  bytesRead, ref.length - 10);
  
          for (i = 0; i < bytesRead; i++) {
              equal &= (b[i] == ref[i + 10]);
          }
          assertTrue("Test 2: Wrong bytes read.", equal);
  
          // Test 3: Since we have now reached the end of the source,
          // the next call of read(byte[]) should return -1.
          bytesRead = is.read(b);
          assertEquals("Test 3:", bytesRead, -1);
      }
  
      public void test_read$BII_Exception() throws IOException {
          byte[] b = new byte[10];
          int bytesRead = 0;
  
          // Test 1: Invalid offset.
          try {
              bytesRead = is.read(b, -1, 5);
              fail("Test 1: IndexOutOfBoundsException expected.");
          } catch (IndexOutOfBoundsException e) {
              // expected
          }
  
          // Test 2: Invalid length.
          try {
              bytesRead = is.read(b, 5, -1);
              fail("Test 2: IndexOutOfBoundsException expected.");
          } catch (IndexOutOfBoundsException e) {
              // expected
          }
  
          // Test 3: Invalid offset and length combination (sum is larger
          // than the length of b).
          try {
              bytesRead = is.read(b, 6, 5);
              fail("Test 3: IndexOutOfBoundsException expected.");
          } catch (IndexOutOfBoundsException e) {
              // expected
          }
  
          // Test 4: Border case.
          try {
              bytesRead = is.read(b, 6, 4);
          } catch (IndexOutOfBoundsException e) {
              fail("Test 4: Unexpected IndexOutOfBoundsException.");
          }
          assertEquals("Test 4:", bytesRead, 4);
  
          // Test 5: Border case.
          try {
              bytesRead = is.read(b, 6, 0);
          } catch (Exception e) {
              fail("Test 5: Unexpected Exception " + e.getMessage());
          }
          assertEquals("Test 5:", bytesRead, 0);
      }
  
      public void test_read$BII() throws IOException {
          byte[] b = new byte[10];
          byte[] ref = testString.getBytes();
          boolean equal = true;
          int bytesRead = 0;
          int i;
  
          // Test 1: This read operation should complete without an error.
          assertEquals("Test 1: Incorrect count of bytes read.",
                  is.read(b, 0, 5), 5);
  
          for (i = 0; i < 5; i++) {
              equal &= (b[i] == ref[i]);
          }
          assertTrue("Test 1: Wrong bytes read.", equal);
  
          // Test 2: Read operation with offset.
          assertEquals("Test 2: Incorrect count of bytes read.",
                  is.read(b, 5, 3), 3);
  
          for (i = 5; i < 8; i++) {
              equal &= (b[i] == ref[i]);
          }
          assertTrue("Test 2: Wrong bytes read.", equal);
  
          // Test 3: Test that the correct number of bytes read is returned
          // if the source has less bytes available than fit in the buffer.
          b = new byte[ref.length];
          bytesRead = is.read(b, 2, b.length - 2);
  
          // 8 bytes have been read during tests 1 and 2.
          assertEquals("Test 3: Incorrect count of bytes read.",
                  bytesRead, ref.length - 8);
  
          // The first two bytes of b should be 0 because of the offset.
          assertEquals("Test 3:", b[0], 0);
          assertEquals("Test 3:", b[1], 0);
          for (i = 0; i < bytesRead; i++) {
              equal &= (b[i + 2] == ref[i + 8]);
          }
          assertTrue("Test 2: Wrong bytes read.", equal);
  
          // Test 4: Since we have now reached the end of the source,
          // the next call of read(byte[], int, int) should return -1.
          assertEquals("Test 4:", is.read(b, 0, 2), -1);
      }
  
      public void test_reset() {
          try {
              is.reset();
              fail("IOException expected.");
          } catch (IOException e) {
              // expected
          }
      }
  
      public void test_skipL() throws IOException {
          byte[] b = new byte[12];
          byte[] ref = testString.getBytes();
          int i;
          boolean equal = true;
  
          // Test 1: Check that skip(long) just returns 0 if called with a
          // negative number.
          assertEquals("Test 1:", is.skip(-42), 0);
          assertEquals("Test 1: Incorrect count of bytes read.",
                  is.read(b), 12);
          for (i = 0; i < 12; i++) {
              equal &= (b[i] == ref[i]);
          }
          assertTrue("Test 1: Wrong bytes read.", equal);
  
          // Test 2: Check if the number of bytes skipped matches the requested
          // number of bytes to skip.
          assertEquals("Test 2: Incorrect count of bytes skipped.",
                  is.skip(17), 17);
  
          // Test 3: Check that bytes have actually been skipped
          is.read(b, 0, 10);
          for (i = 0; i < 10; i++) {
              equal &= (b[i] == ref[i + 29]);
          }
          assertTrue("Test 3: Wrong bytes read.", equal);
  
          // Test 4: Test that the correct number of bytes skipped is returned
          // if the source has less bytes available than fit in the buffer.
          assertEquals("Test 4: Incorrect count of bytes skipped.",
                  is.skip(ref.length), ref.length - 39);
  
          // Test 5: Since we have now reached the end of the source,
          // the next call of read(byte[]) should return -1 and calling
          // skip(long) should return 0.
          assertEquals("Test 5:", is.read(b), -1);
          assertEquals("Test 5:", is.skip(10), 0);
      }
  
      protected void setUp() {
          is = new MockInputStream();
      }
  
      protected void tearDown() {
          try {
              is.close();
          } catch (Exception e) {
          }
      }
  }
  