140 lines
4.5 KiB
Java
140 lines
4.5 KiB
Java
/*
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* Copyright (C) 2012 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.io;
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import static com.google.common.io.TestOption.CLOSE_THROWS;
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import static com.google.common.io.TestOption.OPEN_THROWS;
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import static com.google.common.io.TestOption.READ_THROWS;
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import static com.google.common.io.TestOption.WRITE_THROWS;
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import com.google.common.collect.ImmutableList;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.Writer;
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import java.util.EnumSet;
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/**
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* Tests for the default implementations of {@code CharSink} methods.
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*
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* @author Colin Decker
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*/
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public class CharSinkTest extends IoTestCase {
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private static final String STRING = ASCII + I18N;
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private TestCharSink sink;
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@Override
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public void setUp() {
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sink = new TestCharSink();
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}
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public void testOpenBufferedStream() throws IOException {
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Writer writer = sink.openBufferedStream();
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assertTrue(sink.wasStreamOpened());
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assertFalse(sink.wasStreamClosed());
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writer.write(STRING);
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writer.close();
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assertTrue(sink.wasStreamClosed());
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assertEquals(STRING, sink.getString());
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}
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public void testWrite_string() throws IOException {
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assertEquals("", sink.getString());
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sink.write(STRING);
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assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
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assertEquals(STRING, sink.getString());
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}
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public void testWriteFrom_reader() throws IOException {
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StringReader reader = new StringReader(STRING);
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sink.writeFrom(reader);
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assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
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assertEquals(STRING, sink.getString());
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}
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public void testWriteFromStream_doesNotCloseThatStream() throws IOException {
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TestReader in = new TestReader();
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assertFalse(in.closed());
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sink.writeFrom(in);
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assertFalse(in.closed());
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}
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public void testWriteLines_withSpecificSeparator() throws IOException {
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sink.writeLines(ImmutableList.of("foo", "bar", "baz"), "\n");
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assertEquals("foo\nbar\nbaz\n", sink.getString());
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}
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public void testWriteLines_withDefaultSeparator() throws IOException {
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sink.writeLines(ImmutableList.of("foo", "bar", "baz"));
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String separator = System.getProperty("line.separator");
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assertEquals("foo" + separator + "bar" + separator + "baz" + separator, sink.getString());
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}
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public void testWriteLines_stream() throws IOException {
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sink.writeLines(ImmutableList.of("foo", "bar", "baz").stream());
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String separator = System.getProperty("line.separator");
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assertEquals("foo" + separator + "bar" + separator + "baz" + separator, sink.getString());
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}
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public void testWriteLines_stream_separator() throws IOException {
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sink.writeLines(ImmutableList.of("foo", "bar", "baz").stream(), "!");
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assertEquals("foo!bar!baz!", sink.getString());
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}
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public void testClosesOnErrors_copyingFromCharSourceThatThrows() {
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for (TestOption option : EnumSet.of(OPEN_THROWS, READ_THROWS, CLOSE_THROWS)) {
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TestCharSource failSource = new TestCharSource(STRING, option);
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TestCharSink okSink = new TestCharSink();
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try {
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failSource.copyTo(okSink);
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fail();
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} catch (IOException expected) {
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}
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// ensure writer was closed IF it was opened (depends on implementation whether or not it's
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// opened at all if source.newReader() throws).
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assertTrue(
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"stream not closed when copying from source with option: " + option,
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!okSink.wasStreamOpened() || okSink.wasStreamClosed());
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}
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}
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public void testClosesOnErrors_whenWriteThrows() {
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TestCharSink failSink = new TestCharSink(WRITE_THROWS);
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try {
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new TestCharSource(STRING).copyTo(failSink);
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fail();
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} catch (IOException expected) {
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}
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assertTrue(failSink.wasStreamClosed());
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}
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public void testClosesOnErrors_whenWritingFromReaderThatThrows() {
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TestCharSink okSink = new TestCharSink();
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try {
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okSink.writeFrom(new TestReader(READ_THROWS));
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fail();
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} catch (IOException expected) {
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}
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assertTrue(okSink.wasStreamClosed());
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}
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}
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