/*
* 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) {
}
}
}