Java tutorial
/* The MIT License (MIT) Copyright (c) 2016 Antonella Botte, Giacomo Marciani and Debora Partigianoni Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.acmutv.ontoqa.tool.io; import org.apache.commons.io.IOUtils; import org.junit.Assert; import org.junit.Test; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.nio.charset.Charset; import java.nio.file.FileSystems; import java.nio.file.Files; import java.nio.file.Path; import java.util.ArrayList; import java.util.Comparator; import java.util.List; /** * JUnit tests for {@link IOManager}. * @author Antonella Botte {@literal <abotte@acm.org>} * @author Giacomo Marciani {@literal <gmarciani@acm.org>} * @author Debora Partigianoni {@literal <dpartigianoni@acm.org>} * @since 1.0 * @see IOManager */ public class IOManagerTest { /** * Tests the {@link InputStream} creation from a local resource. * @throws IOException when {@link InputStream} cannot be opened. */ @Test public void test_getInputStream_local() throws IOException { String resource = IOManagerTest.class.getResource("/tool/sample-read.txt").getPath(); String actual; try (final InputStream in = IOManager.getInputStream(resource)) { actual = IOUtils.toString(in, Charset.defaultCharset()); } final String expected = "Hello World!"; Assert.assertEquals(expected, actual); } /** * Tests the {@link InputStream} creation from a remote resource. * @throws IOException when {@link InputStream} cannot be opened. */ @Test public void test_getInputStream_remote() throws IOException { String resource = "http://www.google.com/robots.txt"; String actual; try (final InputStream in = IOManager.getInputStream(resource)) { actual = IOUtils.toString(in, Charset.defaultCharset()); } Assert.assertNotNull(actual); } /** * Tests the {@link OutputStream} creation from a local resource. * @throws IOException when {@link OutputStream} cannot be opened. */ @Test public void test_getOutputStream_local() throws IOException { String resource = IOManagerTest.class.getResource("/tool/sample-write.txt").getPath(); //noinspection EmptyTryBlock try (final OutputStream out = IOManager.getOutputStream(resource)) { // } } /** * Tests the {@link OutputStream} creation from a remote resource. */ @Test public void test_getOutputStream_remote() { String resource = "http://www.google.com/robots.txt"; //noinspection EmptyTryBlock try (final OutputStream out = IOManager.getOutputStream(resource)) { // } catch (IOException exc) { return; } Assert.fail(); } @Test public void test_isWritableResource_local() { String resource = IOManagerTest.class.getResource("/tool/sample-write.txt").getPath(); boolean result = IOManager.isWritableResource(resource); Assert.assertTrue(result); } @Test public void test_isWritableResource_remote() { String resource = "http://www.google.com/robots.txt"; boolean result = IOManager.isWritableResource(resource); Assert.assertFalse(result); } /** * Tests read from a local resource. */ @Test public void test_readResource_local() throws IOException { String resource = IOManagerTest.class.getResource("/tool/sample-read.txt").getPath(); String actual = IOManager.readResource(resource); final String expected = "Hello World!"; Assert.assertEquals(expected, actual); } /** * Tests read from a remote resource. */ @Test public void test_readResource_remote() throws IOException { String resource = "http://www.google.com/robots.txt"; String actual = IOManager.readResource(resource); Assert.assertNotNull(actual); } /** * Tests write to a local resource. */ @Test public void test_writeResource_local() throws IOException { String resource = IOManagerTest.class.getResource("/tool/sample-write.txt").getPath(); IOManager.writeResource(resource, "{}"); String actual = IOManager.readResource(resource); final String expected = "{}"; Assert.assertEquals(expected, actual); } /** * Tests write to a remote resource. * Should fail. */ @Test public void test_writeResource_remote() { String resource = "http://www.google.com/robots.txt"; try { IOManager.writeResource(resource, "{}"); } catch (IOException exc) { return; } Assert.fail(); } /** * Tests append to a local resource. * @throws IOException when errors in I/O. */ @Test public void test_appendResource_local() throws IOException { String resource = IOManagerTest.class.getResource("/tool/sample-append.txt").getPath(); Path path = FileSystems.getDefault().getPath(resource).toAbsolutePath(); Files.write(path, "".getBytes()); IOManager.appendResource(resource, "1"); String actual1 = IOManager.readResource(resource); final String expected1 = "1"; Assert.assertEquals(expected1, actual1); IOManager.appendResource(resource, "1"); String actual2 = IOManager.readResource(resource); final String expected2 = "11"; Assert.assertEquals(expected2, actual2); Files.write(path, "".getBytes()); } /** * Tests append to a remote resource. * Should fail. */ @Test public void test_appendResource_remote() { String resource = "http://www.google.com/robots.txt"; try { IOManager.appendResource(resource, "1"); } catch (IOException exc) { return; } Assert.fail(); } /** * Tests directory listing. */ @Test public void test_listAllFiles() throws IOException { String directory = IOManagerTest.class.getResource("/tool/io/").getPath(); List<Path> actual = IOManager.allFiles(directory); actual.sort(Comparator.naturalOrder()); List<Path> expected = new ArrayList<>(); expected.add( FileSystems.getDefault().getPath(IOManagerTest.class.getResource("/tool/io/sample").getPath())); expected.add( FileSystems.getDefault().getPath(IOManagerTest.class.getResource("/tool/io/sample.txt").getPath())); expected.sort(Comparator.naturalOrder()); Assert.assertEquals(expected, actual); } /** * Tests directory listing with filter. */ @Test public void test_listAllFiles_withExtension() throws IOException { String directory = IOManagerTest.class.getResource("/tool/io/").getPath(); List<Path> actual = IOManager.allFiles(directory, "*.txt"); actual.sort(Comparator.naturalOrder()); List<Path> expected = new ArrayList<>(); expected.add( FileSystems.getDefault().getPath(IOManagerTest.class.getResource("/tool/io/sample.txt").getPath())); expected.sort(Comparator.naturalOrder()); Assert.assertEquals(expected, actual); } }