/*
* 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 tests.api.java.io;
import java.io.BufferedInputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.util.Arrays;
import tests.support.Support_ASimpleInputStream;
import tests.support.Support_PlatformFile;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargetNew;
import dalvik.annotation.TestTargets;
@TestTargetClass(FilterInputStream.class)
public class FilterInputStreamTest extends junit.framework.TestCase {
static class MyFilterInputStream extends java.io.FilterInputStream {
public MyFilterInputStream(java.io.InputStream is) {
super(is);
}
}
private String fileName;
private FilterInputStream is;
byte[] ibuf = new byte[4096];
private 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 static final int testLength = testString.length();
/**
* @tests java.io.FilterInputStream#InputStream()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies constructor FilterInputStream(InputStream).",
method = "FilterInputStream",
args = {java.io.InputStream.class}
)
public void test_Constructor() {
// The FilterInputStream object has already been created in setUp().
// If anything has gone wrong, closing it should throw a
// NullPointerException.
try {
is.close();
} catch (IOException e) {
fail("Unexpected IOException: " + e.getMessage());
} catch (NullPointerException npe) {
fail("Unexpected NullPointerException.");
}
}
/**
* @tests java.io.FilterInputStream#available()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
method = "available",
args = {}
)
public void test_available() throws IOException {
assertEquals("Test 1: Returned incorrect number of available bytes;",
testLength, is.available());
is.close();
try {
is.available();
fail("Test 2: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.FilterInputStream#close()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
method = "close",
args = {}
)
public void test_close() throws IOException {
is.close();
try {
is.read();
fail("Test 1: Read from closed stream succeeded.");
} catch (IOException e) {
// Expected.
}
Support_ASimpleInputStream sis = new Support_ASimpleInputStream(true);
is = new MyFilterInputStream(sis);
try {
is.close();
fail("Test 2: IOException expected.");
} catch (IOException e) {
// Expected.
}
sis.throwExceptionOnNextUse = false;
}
/**
* @tests java.io.FilterInputStream#mark(int)
*/
@TestTargets({
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies mark(int) in combination with reset().",
method = "mark",
args = {int.class}
),
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies mark(int) in combination with reset().",
method = "reset",
args = {}
)
})
public void test_markI() throws Exception {
// Test for method void java.io.FilterInputStream.mark(int)
final int bufSize = 10;
byte[] buf1 = new byte[bufSize];
byte[] buf2 = new byte[bufSize];
// Purpose 1: Check that mark() does nothing if the filtered stream
// is a FileInputStream.
is.read(buf1, 0, bufSize);
is.mark(2 * bufSize);
is.read(buf1, 0, bufSize);
try {
is.reset();
} catch (IOException e) {
// Expected
}
is.read(buf2, 0, bufSize);
assertFalse("Test 1: mark() should have no effect.",
Arrays.equals(buf1, buf2));
is.close();
// Purpose 2: Check that mark() in combination with reset() works if
// the filtered stream is a BufferedInputStream.
is = new MyFilterInputStream(new BufferedInputStream(
new java.io.FileInputStream(fileName), 100));
is.read(buf1, 0, bufSize);
is.mark(2 * bufSize);
is.read(buf1, 0, bufSize);
is.reset();
is.read(buf2, 0, bufSize);
assertTrue("Test 2: mark() or reset() has failed.",
Arrays.equals(buf1, buf2));
}
/**
* @tests java.io.FilterInputStream#markSupported()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies markSupported() method.",
method = "markSupported",
args = {}
)
public void test_markSupported() throws Exception {
// Test for method boolean java.io.FilterInputStream.markSupported()
// Test 1: Check that markSupported() returns false for a filtered
// input stream that is known to not support mark().
assertFalse("Test 1: markSupported() incorrectly returned true " +
"for a FileInputStream.", is.markSupported());
is.close();
// Test 2: Check that markSupported() returns true for a filtered
// input stream that is known to support mark().
is = new MyFilterInputStream(new BufferedInputStream(
new java.io.FileInputStream(fileName), 100));
assertTrue("Test 2: markSupported() incorrectly returned false " +
"for a BufferedInputStream.", is.markSupported());
}
/**
* @tests java.io.FilterInputStream#read()
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
method = "read",
args = {}
)
public void test_read() throws IOException {
int c = is.read();
assertEquals("Test 1: Read returned incorrect char;",
testString.charAt(0), c);
is.close();
try {
is.read();
fail("Test 2: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.FilterInputStream#read(byte[])
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
method = "read",
args = {byte[].class}
)
public void test_read$B() throws IOException {
// Test for method int java.io.FilterInputStream.read(byte [])
byte[] buf1 = new byte[100];
is.read(buf1);
assertTrue("Test 1: Failed to read correct data.",
new String(buf1, 0, buf1.length).equals(
testString.substring(0, 100)));
is.close();
try {
is.read(buf1);
fail("Test 2: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.FilterInputStream#read(byte[], int, int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
method = "read",
args = {byte[].class, int.class, int.class}
)
public void test_read$BII() throws IOException {
byte[] buf1 = new byte[20];
is.skip(10);
is.read(buf1, 0, buf1.length);
assertTrue("Failed to read correct data", new String(buf1, 0,
buf1.length).equals(testString.substring(10, 30)));
}
/**
* @tests FilterInputStream#read(byte[], int, int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Illegal argument checks.",
method = "read",
args = {byte[].class, int.class, int.class}
)
public void test_read$BII_Exception() throws IOException {
byte[] buf = null;
try {
is.read(buf, -1, 0);
fail("Test 1: NullPointerException expected.");
} catch (NullPointerException e) {
// Expected.
}
buf = new byte[1000];
try {
is.read(buf, -1, 0);
fail("Test 2: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
is.read(buf, 0, -1);
fail("Test 3: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
is.read(buf, -1, -1);
fail("Test 4: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
is.read(buf, 0, 1001);
fail("Test 5: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
is.read(buf, 1001, 0);
fail("Test 6: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
try {
is.read(buf, 500, 501);
fail("Test 7: IndexOutOfBoundsException expected.");
} catch (IndexOutOfBoundsException e) {
// Expected.
}
is.close();
try {
is.read(buf, 0, 100);
fail("Test 8: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* @tests java.io.FilterInputStream#reset()
*/
@TestTargets({
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies reset() in combination with mark().",
method = "reset",
args = {}
),
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies reset() in combination with mark().",
method = "mark",
args = { int.class }
)
})
public void test_reset() throws Exception {
// Test for method void java.io.FilterInputStream.reset()
// Test 1: Check that reset() throws an IOException if the
// filtered stream is a FileInputStream.
try {
is.reset();
fail("Test 1: IOException expected.");
} catch (IOException e) {
// expected
}
// Test 2: Check that reset() throws an IOException if the
// filtered stream is a BufferedInputStream but mark() has not
// yet been called.
is = new MyFilterInputStream(new BufferedInputStream(
new java.io.FileInputStream(fileName), 100));
try {
is.reset();
fail("Test 2: IOException expected.");
} catch (IOException e) {
// expected
}
// Test 3: Check that reset() in combination with mark()
// works correctly.
final int bufSize = 10;
byte[] buf1 = new byte[bufSize];
byte[] buf2 = new byte[bufSize];
is.read(buf1, 0, bufSize);
is.mark(2 * bufSize);
is.read(buf1, 0, bufSize);
try {
is.reset();
} catch (IOException e) {
fail("Test 3: Unexpected IOException.");
}
is.read(buf2, 0, bufSize);
assertTrue("Test 4: mark() or reset() has failed.",
Arrays.equals(buf1, buf2));
}
/**
* @tests java.io.FilterInputStream#skip(long)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
method = "skip",
args = {long.class}
)
public void test_skipJ() throws IOException {
byte[] buf1 = new byte[10];
is.skip(10);
is.read(buf1, 0, buf1.length);
assertTrue("Test 1: Failed to skip to the correct position.",
new String(buf1, 0, buf1.length).equals(
testString.substring(10, 20)));
is.close();
try {
is.read();
fail("Test 2: IOException expected.");
} catch (IOException e) {
// Expected.
}
}
/**
* Sets up the fixture, for example, open a network connection. This method
* is called before a test is executed.
*/
protected void setUp() {
try {
fileName = System.getProperty("java.io.tmpdir");
String separator = System.getProperty("file.separator");
if (fileName.charAt(fileName.length() - 1) == separator.charAt(0))
fileName = Support_PlatformFile.getNewPlatformFile(fileName,
"input.tst");
else
fileName = Support_PlatformFile.getNewPlatformFile(fileName
+ separator, "input.tst");
java.io.OutputStream fos = new java.io.FileOutputStream(fileName);
fos.write(testString.getBytes());
fos.close();
is = new MyFilterInputStream(new java.io.FileInputStream(fileName));
} catch (java.io.IOException e) {
System.out.println("Exception during setup");
e.printStackTrace();
}
}
/**
* Tears down the fixture, for example, close a network connection. This
* method is called after a test is executed.
*/
protected void tearDown() {
try {
is.close();
} catch (Exception e) {
System.out.println("Unexpected exception in tearDown().");
}
new java.io.File(fileName).delete();
}
}
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