mirror of https://github.com/longtai-cn/hippo4j
Add test case for IoUtil (#1352)
* Add test case for IoUtil * replace import java.io.*; * 1.change testTryDecompress to testTryDecompressInputStream and testTryDecompressByteArray 2.remove test resource filepull/1357/head
shuhai
2 years ago
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GitHub
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778a9e6a6b
@ -0,0 +1,260 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. 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 cn.hippo4j.common.toolkit;
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import org.apache.commons.io.input.BrokenInputStream;
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import org.junit.After;
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import org.junit.Assert;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.jupiter.api.Assertions;
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import java.io.BufferedReader;
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import java.io.PrintWriter;
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import java.io.Reader;
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import java.io.Writer;
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import java.io.File;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.io.Closeable;
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import java.io.FileReader;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.ByteArrayInputStream;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.List;
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import java.util.zip.GZIPInputStream;
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import java.util.zip.GZIPOutputStream;
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/**
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* test for {@link IoUtil}
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*/
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public class IoUtilTest {
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private Path tempDir;
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private File sourceFile;
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@Before
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public void setUp() throws IOException {
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tempDir = Files.createTempDirectory("test");
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sourceFile = new File(tempDir.toFile(), "source.txt");
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try (FileOutputStream fos = new FileOutputStream(sourceFile)) {
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fos.write("Hello, World!".getBytes());
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}
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}
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@After
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public void tearDown() throws IOException {
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Files.walk(tempDir)
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.sorted((a, b) -> -a.compareTo(b))
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.forEach(path -> {
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try {
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Files.deleteIfExists(path);
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} catch (IOException e) {
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e.printStackTrace();
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}
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});
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}
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@Test
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public void testTryDecompressInputStream() throws IOException {
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byte[] inputBytes = "This is a test string.".getBytes("UTF-8");
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ByteArrayOutputStream compressedOutput = new ByteArrayOutputStream();
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try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(compressedOutput)) {
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gzipOutputStream.write(inputBytes);
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}
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byte[] compressedBytes = compressedOutput.toByteArray();
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ByteArrayInputStream compressedInput = new ByteArrayInputStream(compressedBytes);
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byte[] decompressedBytes = IoUtil.tryDecompress(compressedInput);
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Assert.assertNotNull(decompressedBytes);
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Assert.assertTrue(decompressedBytes.length > 0);
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Assert.assertArrayEquals(inputBytes, decompressedBytes);
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}
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@Test
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public void testTryDecompressByteArray() throws Exception {
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byte[] inputBytes = "This is a test string.".getBytes("UTF-8");
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ByteArrayOutputStream compressedOutput = new ByteArrayOutputStream();
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try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(compressedOutput)) {
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gzipOutputStream.write(inputBytes);
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}
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byte[] compressedBytes = compressedOutput.toByteArray();
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byte[] decompressedBytes = IoUtil.tryDecompress(compressedBytes);
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Assert.assertNotNull(decompressedBytes);
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Assert.assertTrue(decompressedBytes.length > 0);
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Assert.assertArrayEquals(inputBytes, decompressedBytes);
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}
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@Test
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public void testTryCompress() throws IOException {
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String inputString = "This is a test string.";
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String encoding = "UTF-8";
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byte[] compressedBytes = IoUtil.tryCompress(inputString, encoding);
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Assert.assertNotNull(compressedBytes);
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Assert.assertTrue(compressedBytes.length > 0);
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try (
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GZIPInputStream gzipInputStream = new GZIPInputStream(new ByteArrayInputStream(compressedBytes))) {
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byte[] decompressedBytes = new byte[1024];
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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int readBytes;
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while ((readBytes = gzipInputStream.read(decompressedBytes)) > 0) {
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outputStream.write(decompressedBytes, 0, readBytes);
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}
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String decompressedString = outputStream.toString(encoding);
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Assert.assertEquals(inputString, decompressedString);
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}
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}
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@Test
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public void testWriteStringToFile() throws IOException {
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File tempFile = new File(tempDir.toFile(), "testWriteStringToFile.txt");
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String testString = "test string";
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IoUtil.writeStringToFile(tempFile, testString, "UTF-8");
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BufferedReader reader = new BufferedReader(new FileReader(tempFile));
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String fileContent = reader.readLine();
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reader.close();
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Assert.assertEquals(testString, fileContent);
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}
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@Test
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public void testReadLines() throws IOException {
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File tempFile = new File(tempDir.toFile(), "testReadLines.txt");
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try (
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PrintWriter writer = new PrintWriter(tempFile)) {
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writer.println("test string 1");
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writer.println("test string 2");
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writer.println("test string 3");
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}
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FileReader fileReader = new FileReader(tempFile);
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List<String> lines = IoUtil.readLines(fileReader);
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fileReader.close();
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Assert.assertEquals(3, lines.size());
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Assert.assertEquals("test string 1", lines.get(0));
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Assert.assertEquals("test string 2", lines.get(1));
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Assert.assertEquals("test string 3", lines.get(2));
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}
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@Test
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public void testToStringInputStream() {
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String testString = "test string";
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InputStream inputStream = new ByteArrayInputStream(testString.getBytes());
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String result = IoUtil.toString(inputStream, "UTF-8");
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Assert.assertEquals(testString, result);
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}
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@Test
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public void testToStringReader() throws IOException {
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String testString = "test string";
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Reader reader = new StringReader(testString);
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String result = IoUtil.toString(reader);
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Assert.assertEquals(testString, result);
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}
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@Test
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public void testCopyReaderWriter() throws IOException {
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String inputString = "testCopyReaderWriter";
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Reader reader = new StringReader(inputString);
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Writer writer = new StringWriter();
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IoUtil.copy(reader, writer);
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Assert.assertEquals(inputString, writer.toString());
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}
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@Test
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public void testCopyInputStreamOutputStream() throws IOException {
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String inputString = "testCopyInputStreamOutputStream";
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InputStream inputStream = new ByteArrayInputStream(inputString.getBytes());
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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IoUtil.copy(inputStream, outputStream);
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Assert.assertEquals(inputString, outputStream.toString());
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}
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@Test
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public void testDelete() throws IOException {
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File deleteFile = new File(tempDir.toFile(), "delete.txt");
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deleteFile.createNewFile();
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Assert.assertTrue(deleteFile.exists());
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IoUtil.delete(deleteFile);
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Assert.assertFalse(deleteFile.exists());
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File deleteDir = new File(tempDir.toFile(), "delete");
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deleteDir.mkdirs();
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Assert.assertTrue(deleteDir.exists());
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File deleteDirFile = new File(deleteDir, "delete.txt");
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deleteDirFile.createNewFile();
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Assert.assertTrue(deleteDirFile.exists());
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IoUtil.delete(deleteDir);
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Assert.assertTrue(deleteDir.exists());
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Assert.assertFalse(deleteDirFile.exists());
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}
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@Test
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public void testCleanDirectory() throws IOException {
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File cleanDir = new File(tempDir.toFile(), "clean");
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cleanDir.mkdirs();
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File cleanFile1 = new File(cleanDir, "clean1.txt");
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File cleanFile2 = new File(cleanDir, "clean2.txt");
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Assert.assertTrue(cleanDir.exists());
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Assert.assertTrue(cleanFile1.createNewFile());
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Assert.assertTrue(cleanFile2.createNewFile());
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IoUtil.cleanDirectory(cleanDir);
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Assert.assertFalse(cleanFile1.exists());
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Assert.assertFalse(cleanFile2.exists());
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}
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@Test
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public void testCopyFile() throws Exception {
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String sourcePath = sourceFile.getAbsolutePath();
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String targetPath = sourceFile.getParent() + File.separator + "copy" + File.separator + "target.txt";
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IoUtil.copyFile(sourcePath, targetPath);
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File targetFile = new File(targetPath);
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Assert.assertTrue(targetFile.exists());
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Assert.assertEquals(sourceFile.length(), targetFile.length());
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byte[] sourceBytes = Files.readAllBytes(sourceFile.toPath());
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byte[] targetBytes = Files.readAllBytes(targetFile.toPath());
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Assert.assertArrayEquals(sourceBytes, targetBytes);
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}
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@Test
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public void testIsGzipStream() {
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byte[] gzipBytes = new byte[2];
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gzipBytes[0] = (byte) GZIPInputStream.GZIP_MAGIC;
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gzipBytes[1] = (byte) (GZIPInputStream.GZIP_MAGIC >> 8);
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byte[] invalidGzipBytes = new byte[2];
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invalidGzipBytes[0] = (byte) (GZIPInputStream.GZIP_MAGIC + 1);
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invalidGzipBytes[1] = (byte) ((GZIPInputStream.GZIP_MAGIC >> 8) + 1);
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byte[] invalidGzipBytes2 = new byte[1];
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byte[] normalBytes = new byte[2];
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Assert.assertTrue(IoUtil.isGzipStream(gzipBytes));
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Assert.assertFalse(IoUtil.isGzipStream(invalidGzipBytes));
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Assert.assertFalse(IoUtil.isGzipStream(invalidGzipBytes2));
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Assert.assertFalse(IoUtil.isGzipStream(null));
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Assert.assertFalse(IoUtil.isGzipStream(normalBytes));
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}
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@Test
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public void testCloseQuietly() throws IOException {
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Closeable closeable = new BrokenInputStream();
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URL url = new URL("https://www.baidu.com");
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HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
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Assertions.assertDoesNotThrow(() -> IoUtil.closeQuietly(closeable));
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Assertions.assertDoesNotThrow(() -> IoUtil.closeQuietly(closeable, closeable, closeable));
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Assertions.assertDoesNotThrow(() -> IoUtil.closeQuietly(httpURLConnection));
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}
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}
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