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/*
* 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 org.apache.tools.ant.util;
import org.junit.Test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.StringReader;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
/**
* Test for ReaderInputStream
*/
public class ReaderInputStreamTest {
@Test
public void testSimple() throws Exception {
compareBytes("abc", "utf-8");
}
@Test
public void testSimple16() throws Exception {
compareBytes("a", "utf-16");
}
@Test
public void testSimpleAbc16() throws Exception {
// THIS WILL FAIL.
//compareBytes("abc", "utf-16");
byte[] bytes = new byte[40];
int pos = 0;
ReaderInputStream r = new ReaderInputStream(
new StringReader("abc"), "utf-16");
for (int i = 0; true; ++i) {
int res = r.read();
if (res == -1) {
break;
}
bytes[pos++] = (byte) res;
}
bytes = "abc".getBytes("utf-16");
// String n = new String(bytes, 0, pos, "utf-16");
new String(bytes, 0, bytes.length, "utf-16");
}
@Test
public void testReadZero() throws Exception {
ReaderInputStream r = new ReaderInputStream(
new StringReader("abc"));
byte[] bytes = new byte[30];
// First read in zero bytes
r.read(bytes, 0, 0);
// Now read in the string
int readin = r.read(bytes, 0, 10);
// Make sure that the counts are the same
assertEquals("abc".getBytes().length, readin);
}
@Test
public void testPreample() throws Exception {
byte[] bytes = "".getBytes("utf-16");
System.out.println("Preample len is " + bytes.length);
}
@Test
public void testIso88591ToUtf8() throws Exception {
InputStreamReader fin = null;
ReaderInputStream r = null;
FileInputStream utf8 = null;
try {
fin = new InputStreamReader(new FileInputStream(new File(System.getProperty("root"), "src/tests/antunit/taskdefs/exec/input/iso8859-1")),
"ISO8859_1");
r = new ReaderInputStream(fin, "UTF8");
ByteArrayOutputStream actualOS = new ByteArrayOutputStream();
int b = r.read();
while (b > -1) {
actualOS.write((byte) b);
b = r.read();
}
utf8 = new FileInputStream(new File(System.getProperty("root"), "src/tests/antunit/taskdefs/exec/expected/utf-8"));
ByteArrayOutputStream expectedOS = new ByteArrayOutputStream();
b = utf8.read();
while (b > -1) {
expectedOS.write((byte) b);
b = utf8.read();
}
byte[] expected = expectedOS.toByteArray();
byte[] actual = actualOS.toByteArray();
assertEquals("length", expected.length, actual.length);
for (int i = 0; i < actual.length; i++) {
assertEquals("byte " + i, expected[i], actual[i]);
}
} finally {
FileUtils.close(fin);
FileUtils.close(r);
FileUtils.close(utf8);
}
}
private void compareBytes(String s, String encoding) throws Exception {
byte[] expected = s.getBytes(encoding);
ReaderInputStream r = new ReaderInputStream(
new StringReader(s), encoding);
for (int i = 0; i < expected.length; ++i) {
int expect = expected[i] & 0xFF;
int read = r.read();
if (expect != read) {
fail("Mismatch in ReaderInputStream at index " + i
+ " expecting " + expect + " got " + read + " for string "
+ s + " with encoding " + encoding);
}
}
if (r.read() != -1) {
fail("Mismatch in ReaderInputStream - EOF not seen for string "
+ s + " with encoding " + encoding);
}
}
}
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