/*
* 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.commons.io;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.apache.commons.io.testtools.FileBasedTestCase;
import org.apache.commons.io.testtools.TestUtils;
import org.apache.commons.io.testtools.YellOnFlushAndCloseOutputStream;
import org.junit.Test;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Arrays;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* JUnit tests for IOUtils write methods.
*
* @see IOUtils
*/
@SuppressWarnings("deprecation") // includes tests for deprecated methods
public class IOUtilsWriteTestCase extends FileBasedTestCase {
private static final int FILE_SIZE = 1024 * 4 + 1;
private final byte[] inData = TestUtils.generateTestData((long) FILE_SIZE);
// ----------------------------------------------------------------
// Tests
// ----------------------------------------------------------------
//-----------------------------------------------------------------------
@Test
public void testWrite_byteArrayToOutputStream() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(inData, out);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_byteArrayToOutputStream_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((byte[]) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_byteArrayToOutputStream_nullStream() throws Exception {
try {
IOUtils.write(inData, (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_byteArrayToWriter() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(inData, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_byteArrayToWriter_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write((byte[]) null, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_byteArrayToWriter_nullWriter() throws Exception {
try {
IOUtils.write(inData, (Writer) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_byteArrayToWriter_Encoding() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(inData, writer, "UTF8");
out.off();
writer.flush();
byte[] bytes = baout.toByteArray();
bytes = new String(bytes, "UTF8").getBytes("US-ASCII");
assertTrue("Content differs", Arrays.equals(inData, bytes));
}
@Test
public void testWrite_byteArrayToWriter_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(null, writer, "UTF8");
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_byteArrayToWriter_Encoding_nullWriter() throws Exception {
try {
IOUtils.write(inData, null, "UTF8");
fail();
} catch (final NullPointerException ignore) {
}
}
@Test
public void testWrite_byteArrayToWriter_Encoding_nullEncoding() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(inData, writer, (String) null);
out.off();
writer.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charSequenceToOutputStream() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(csq, out);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_charSequenceToOutputStream_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((CharSequence) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charSequenceToOutputStream_nullStream() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
try {
IOUtils.write(csq, (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charSequenceToOutputStream_Encoding() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(csq, out, "UTF16");
out.off();
out.flush();
byte[] bytes = baout.toByteArray();
bytes = new String(bytes, "UTF16").getBytes("US-ASCII");
assertTrue("Content differs", Arrays.equals(inData, bytes));
}
@Test
public void testWrite_charSequenceToOutputStream_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((CharSequence) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charSequenceToOutputStream_Encoding_nullStream() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
try {
IOUtils.write(csq, (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
@Test
public void testWrite_charSequenceToOutputStream_nullEncoding() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(csq, out, (String) null);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charSequenceToWriter() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(csq, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_charSequenceToWriter_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write((CharSequence) null, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charSequenceToWriter_Encoding_nullStream() throws Exception {
final CharSequence csq = new StringBuilder(new String(inData, "US-ASCII"));
try {
IOUtils.write(csq, (Writer) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_stringToOutputStream() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str, out);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_stringToOutputStream_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((String) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_stringToOutputStream_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str, (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_stringToOutputStream_Encoding() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str, out, "UTF16");
out.off();
out.flush();
byte[] bytes = baout.toByteArray();
bytes = new String(bytes, "UTF16").getBytes("US-ASCII");
assertTrue("Content differs", Arrays.equals(inData, bytes));
}
@Test
public void testWrite_stringToOutputStream_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((String) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_stringToOutputStream_Encoding_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str, (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
@Test
public void testWrite_stringToOutputStream_nullEncoding() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str, out, (String) null);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
//-----------------------------------------------------------------------
@Test
public void testWrite_stringToWriter() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(str, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_stringToWriter_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write((String) null, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_stringToWriter_Encoding_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str, (Writer) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charArrayToOutputStream() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str.toCharArray(), out);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_charArrayToOutputStream_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((char[]) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charArrayToOutputStream_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str.toCharArray(), (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charArrayToOutputStream_Encoding() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str.toCharArray(), out, "UTF16");
out.off();
out.flush();
byte[] bytes = baout.toByteArray();
bytes = new String(bytes, "UTF16").getBytes("US-ASCII");
assertTrue("Content differs", Arrays.equals(inData, bytes));
}
@Test
public void testWrite_charArrayToOutputStream_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write((char[]) null, out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charArrayToOutputStream_Encoding_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str.toCharArray(), (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
@Test
public void testWrite_charArrayToOutputStream_nullEncoding() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
IOUtils.write(str.toCharArray(), out, (String) null);
out.off();
out.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
//-----------------------------------------------------------------------
@Test
public void testWrite_charArrayToWriter() throws Exception {
final String str = new String(inData, "US-ASCII");
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write(str.toCharArray(), writer);
out.off();
writer.flush();
assertEquals("Sizes differ", inData.length, baout.size());
assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
}
@Test
public void testWrite_charArrayToWriter_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.write((char[]) null, writer);
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWrite_charArrayToWriter_Encoding_nullStream() throws Exception {
final String str = new String(inData, "US-ASCII");
try {
IOUtils.write(str.toCharArray(), (Writer) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWriteLines_OutputStream() throws Exception {
final Object[] data = new Object[]{
"hello", new StringBuffer("world"), "", "this is", null, "some text"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(list, "*", out);
out.off();
out.flush();
final String expected = "hello*world**this is**some text*";
final String actual = baout.toString();
assertEquals(expected, actual);
}
@Test
public void testWriteLines_OutputStream_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(null, "*", out);
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWriteLines_OutputStream_nullSeparator() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(list, null, out);
out.off();
out.flush();
final String expected = "hello" + IOUtils.LINE_SEPARATOR + "world" + IOUtils.LINE_SEPARATOR;
final String actual = baout.toString();
assertEquals(expected, actual);
}
@Test
public void testWriteLines_OutputStream_nullStream() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
try {
IOUtils.writeLines(list, "*", (OutputStream) null);
fail();
} catch (final NullPointerException ignore) {
}
}
//-----------------------------------------------------------------------
@Test
public void testWriteLines_OutputStream_Encoding() throws Exception {
final Object[] data = new Object[]{
"hello\u8364", new StringBuffer("world"), "", "this is", null, "some text"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(list, "*", out, "UTF-8");
out.off();
out.flush();
final String expected = "hello\u8364*world**this is**some text*";
final String actual = baout.toString("UTF-8");
assertEquals(expected, actual);
}
@Test
public void testWriteLines_OutputStream_Encoding_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(null, "*", out, "US-ASCII");
out.off();
out.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWriteLines_OutputStream_Encoding_nullSeparator() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(list, null, out, "US-ASCII");
out.off();
out.flush();
final String expected = "hello" + IOUtils.LINE_SEPARATOR + "world" + IOUtils.LINE_SEPARATOR;
final String actual = baout.toString();
assertEquals(expected, actual);
}
@Test
public void testWriteLines_OutputStream_Encoding_nullStream() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
try {
IOUtils.writeLines(list, "*", null, "US-ASCII");
fail();
} catch (final NullPointerException ignore) {
}
}
@Test
public void testWriteLines_OutputStream_Encoding_nullEncoding() throws Exception {
final Object[] data = new Object[]{
"hello", new StringBuffer("world"), "", "this is", null, "some text"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
IOUtils.writeLines(list, "*", out, (String) null);
out.off();
out.flush();
final String expected = "hello*world**this is**some text*";
final String actual = baout.toString();
assertEquals(expected, actual);
}
//-----------------------------------------------------------------------
@Test
public void testWriteLines_Writer() throws Exception {
final Object[] data = new Object[]{
"hello", new StringBuffer("world"), "", "this is", null, "some text"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.writeLines(list, "*", writer);
out.off();
writer.flush();
final String expected = "hello*world**this is**some text*";
final String actual = baout.toString();
assertEquals(expected, actual);
}
@Test
public void testWriteLines_Writer_nullData() throws Exception {
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.writeLines(null, "*", writer);
out.off();
writer.flush();
assertEquals("Sizes differ", 0, baout.size());
}
@Test
public void testWriteLines_Writer_nullSeparator() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
final ByteArrayOutputStream baout = new ByteArrayOutputStream();
@SuppressWarnings("resource") // deliberately not closed
final YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
final Writer writer = new OutputStreamWriter(baout, "US-ASCII");
IOUtils.writeLines(list, null, writer);
out.off();
writer.flush();
final String expected = "hello" + IOUtils.LINE_SEPARATOR + "world" + IOUtils.LINE_SEPARATOR;
final String actual = baout.toString();
assertEquals(expected, actual);
}
@Test
public void testWriteLines_Writer_nullStream() throws Exception {
final Object[] data = new Object[]{"hello", "world"};
final List<Object> list = Arrays.asList(data);
try {
IOUtils.writeLines(list, "*", (Writer) null);
fail();
} catch (final NullPointerException ignore) {
}
}
}