Java tutorial
/* * Copyright 2016-present Open Networking Laboratory * * 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 org.onosproject.yang.compiler.utils.io.impl; import org.apache.commons.io.FileUtils; import org.junit.Rule; import org.junit.Test; import org.junit.rules.ExpectedException; import org.onosproject.yang.compiler.utils.UtilConstants; import java.io.File; import java.io.IOException; import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import static org.hamcrest.core.Is.is; import static org.hamcrest.core.IsNot.not; import static org.junit.Assert.assertThat; /** * Unit tests for YANG IO utils. */ public final class YangIoUtilsTest { private static final String BASE_DIR = "target/UnitTestCase"; private static final String CREATE_PATH = BASE_DIR + File.separator + "dir1/dir2/dir3/dir4/"; private static final String CHECK_STRING = "one, two, three, four, five, six"; private static final String TRIM_STRING = "one, two, three, four, five, "; private static final String CHECK1 = "check1"; private static final String PKG_INFO = "package-info.java"; private static final String PATH = "src/main/yangmodel/"; private static final String MSG = "Exception occurred while creating package info file."; /** * Expected exceptions. */ @Rule public ExpectedException thrown = ExpectedException.none(); /** * This test case checks whether the package-info file is created. * * @throws IOException when fails to do IO operations for test case */ @Test public void addPackageInfoTest() throws IOException { File dirPath = new File(CREATE_PATH); dirPath.mkdirs(); YangIoUtils.addPackageInfo(dirPath, CHECK1, CREATE_PATH, false); File filePath = new File(dirPath + File.separator + PKG_INFO); assertThat(filePath.isFile(), is(true)); FileUtils.deleteDirectory(new File(BASE_DIR)); } /** * This test case checks with an additional info in the path. * * @throws IOException when fails to do IO operations for test case */ @Test public void addPackageInfoWithPathTest() throws IOException { File dirPath = new File(CREATE_PATH); dirPath.mkdirs(); YangIoUtils.addPackageInfo(dirPath, CHECK1, PATH + CREATE_PATH, false); File filePath = new File(dirPath + File.separator + PKG_INFO); assertThat(filePath.isFile(), is(true)); FileUtils.deleteDirectory(new File(BASE_DIR)); } /** * This test case checks with a child node. * * @throws IOException when fails to do IO operations for test case */ @Test public void addPackageInfoWithChildNode() throws IOException { File dirPath = new File(CREATE_PATH); dirPath.mkdirs(); YangIoUtils.addPackageInfo(dirPath, CHECK1, PATH + CREATE_PATH, true); File filePath = new File(dirPath + File.separator + PKG_INFO); assertThat(filePath.isFile(), is(true)); FileUtils.deleteDirectory(new File(BASE_DIR)); } /** * This test case checks whether the package-info file is created when invalid path is given. * * @throws IOException when fails to do IO operations for test case */ @Test public void addPackageInfoWithEmptyPathTest() throws IOException { File dirPath = new File("invalid/check"); thrown.expect(IOException.class); thrown.expectMessage(MSG); YangIoUtils.addPackageInfo(dirPath, CHECK1, CREATE_PATH, false); File filePath1 = new File(dirPath + File.separator + PKG_INFO); assertThat(filePath1.isFile(), is(false)); FileUtils.deleteDirectory(dirPath); FileUtils.deleteDirectory(new File(BASE_DIR)); } /** * A private constructor is tested. * * @throws SecurityException if any security violation is observed * @throws NoSuchMethodException if when the method is not found * @throws IllegalArgumentException if there is illegal argument found * @throws InstantiationException if instantiation is provoked for the private constructor * @throws IllegalAccessException if instance is provoked or a method is provoked * @throws InvocationTargetException when an exception occurs by the method or constructor */ @Test public void callPrivateConstructors() throws SecurityException, NoSuchMethodException, IllegalArgumentException, InstantiationException, IllegalAccessException, InvocationTargetException { Class<?>[] classesToConstruct = { YangIoUtils.class }; for (Class<?> clazz : classesToConstruct) { Constructor<?> constructor = clazz.getDeclaredConstructor(); constructor.setAccessible(true); assertThat(null, not(constructor.newInstance())); } } /** * This test case checks if the directory is cleaned. * * @throws IOException when fails to do IO operations for test case */ @Test public void cleanGeneratedDirTest() throws IOException { File baseDirPath = new File(BASE_DIR); File createNewDir = new File(BASE_DIR + File.separator + UtilConstants.YANG_GEN_DIR); createNewDir.mkdirs(); File createFile = new File(createNewDir + File.separator + "check1.java"); createFile.createNewFile(); YangIoUtils.deleteDirectory(baseDirPath.getAbsolutePath()); FileUtils.deleteDirectory(createNewDir); FileUtils.deleteDirectory(baseDirPath); } /** * This test case checks the cleaning method when an invalid path is provided. * * @throws IOException when fails to do IO operations for test case */ @Test public void cleanWithInvalidDirTest() throws IOException { File baseDirPath = new File(BASE_DIR + "invalid"); YangIoUtils.deleteDirectory(baseDirPath.getAbsolutePath()); } /** * This test case tests whether the directories are getting created. */ @Test public void createDirectoryTest() throws IOException { File dirPath = YangIoUtils.createDirectories(CREATE_PATH); assertThat(dirPath.isDirectory(), is(true)); FileUtils.deleteDirectory(new File(BASE_DIR)); } /** * Unit test case for trim at last method. */ @Test public void testForTrimAtLast() { String test = YangIoUtils.trimAtLast(CHECK_STRING, "six"); assertThat(test.contains(TRIM_STRING), is(true)); } }