| /* |
| * Copyright (C) 2018 Square, Inc. |
| * |
| * Licensed 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 okio.samples; |
| |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.StandardOpenOption; |
| import java.util.EnumSet; |
| import java.util.Set; |
| import okio.Buffer; |
| import okio.BufferedSource; |
| import okio.Okio; |
| import okio.Sink; |
| import okio.Source; |
| import okio.Timeout; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| |
| import static java.nio.file.StandardOpenOption.APPEND; |
| import static java.nio.file.StandardOpenOption.READ; |
| import static java.nio.file.StandardOpenOption.WRITE; |
| import static org.assertj.core.api.Assertions.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public final class ChannelsTest { |
| private static final String quote = |
| "John, the kind of control you're attempting simply is... it's not " |
| + "possible. If there is one thing the history of evolution has " |
| + "taught us it's that life will not be contained. Life breaks " |
| + "free, it expands to new territories and crashes through " |
| + "barriers, painfully, maybe even dangerously, but, uh... well, " |
| + "there it is."; |
| |
| private static final Set<StandardOpenOption> r = EnumSet.of(READ); |
| private static final Set<StandardOpenOption> w = EnumSet.of(WRITE); |
| private static final Set<StandardOpenOption> append = EnumSet.of(WRITE, APPEND); |
| |
| @Rule public TemporaryFolder temporaryFolder = new TemporaryFolder(); |
| |
| @Test public void testReadChannel() throws Exception { |
| ReadableByteChannel channel = new Buffer().writeUtf8(quote); |
| |
| Buffer buffer = new Buffer(); |
| Source source = new ByteChannelSource(channel, Timeout.NONE); |
| source.read(buffer, 75); |
| |
| assertThat(buffer.readUtf8()) |
| .isEqualTo("John, the kind of control you're attempting simply is... it's not possible."); |
| } |
| |
| @Test public void testReadChannelFully() throws Exception { |
| ReadableByteChannel channel = new Buffer().writeUtf8(quote); |
| |
| BufferedSource source = Okio.buffer(new ByteChannelSource(channel, Timeout.NONE)); |
| assertThat(source.readUtf8()) |
| .isEqualTo(quote); |
| } |
| |
| @Test public void testWriteChannel() throws Exception { |
| Buffer channel = new Buffer(); |
| |
| Sink sink = new ByteChannelSink(channel, Timeout.NONE); |
| sink.write(new Buffer().writeUtf8(quote), 75); |
| |
| assertThat(channel.readUtf8()) |
| .isEqualTo("John, the kind of control you're attempting simply is... it's not possible."); |
| } |
| |
| @Test public void testReadWriteFile() throws Exception { |
| Path path = temporaryFolder.newFile().toPath(); |
| |
| Sink sink = new FileChannelSink(FileChannel.open(path, w), Timeout.NONE); |
| sink.write(new Buffer().writeUtf8(quote), 317); |
| sink.close(); |
| assertTrue(Files.exists(path)); |
| assertEquals(quote.length(), Files.size(path)); |
| |
| Buffer buffer = new Buffer(); |
| Source source = new FileChannelSource(FileChannel.open(path, r), Timeout.NONE); |
| |
| source.read(buffer, 44); |
| assertThat(buffer.readUtf8()) |
| .isEqualTo("John, the kind of control you're attempting "); |
| |
| source.read(buffer, 31); |
| assertThat(buffer.readUtf8()) |
| .isEqualTo("simply is... it's not possible."); |
| } |
| |
| @Test public void testAppend() throws Exception { |
| Path path = temporaryFolder.newFile().toPath(); |
| |
| Buffer buffer = new Buffer().writeUtf8(quote); |
| Sink sink; |
| BufferedSource source; |
| |
| sink = new FileChannelSink(FileChannel.open(path, w), Timeout.NONE); |
| sink.write(buffer, 75); |
| sink.close(); |
| assertTrue(Files.exists(path)); |
| assertEquals(75, Files.size(path)); |
| |
| source = Okio.buffer(new FileChannelSource(FileChannel.open(path, r), Timeout.NONE)); |
| assertThat(source.readUtf8()) |
| .isEqualTo("John, the kind of control you're attempting simply is... it's not possible."); |
| |
| sink = new FileChannelSink(FileChannel.open(path, append), Timeout.NONE); |
| sink.write(buffer, buffer.size()); |
| sink.close(); |
| assertTrue(Files.exists(path)); |
| assertEquals(quote.length(), Files.size(path)); |
| |
| source = Okio.buffer(new FileChannelSource(FileChannel.open(path, r), Timeout.NONE)); |
| assertThat(source.readUtf8()) |
| .isEqualTo(quote); |
| } |
| } |