commons-vfs2/src/test/java/org/apache/commons/vfs2/AbstractProviderTestCase.java - commons-vfs - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You 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.apache.commons.vfs2;

 import static org.junit.Assert.assertArrayEquals;

 import java.io.ByteArrayOutputStream;
 import java.io.InputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.net.URLConnection;
 import java.nio.charset.StandardCharsets;

 import org.apache.commons.vfs2.impl.DefaultFileSystemManager;
 import org.apache.commons.vfs2.provider.AbstractFileSystem;
 import org.apache.commons.vfs2.provider.local.DefaultLocalFileProvider;
 import org.junit.Assert;

 import junit.framework.Test;
 import junit.framework.TestCase;

 /**
  * File system test cases, which verifies the structure and naming functionality.
  * <p>
  * Works from a base folder, and assumes a particular structure under that base folder.
  */
 public abstract class AbstractProviderTestCase extends AbstractVfsTestCase {
     private FileObject baseFolder;
     private FileObject readFolder;
     private FileObject writeFolder;
     private DefaultFileSystemManager manager;
     private ProviderTestConfig providerConfig;
     private Method method;
     private boolean addEmptyDir;

     // Expected contents of "file1.txt"
     public static final String FILE1_CONTENT = "This is a test file.";

     // Expected contents of test files
     public static final String TEST_FILE_CONTENT = "A test file.";

     /**
      * Sets the test method.
      */
     public void setMethod(final Method method) {
         this.method = method;
     }

     /**
      * Configures this test.
      */
     public void setConfig(final DefaultFileSystemManager manager, final ProviderTestConfig providerConfig,
             final FileObject baseFolder, final FileObject readFolder, final FileObject writeFolder) {
         this.manager = manager;
         this.providerConfig = providerConfig;
         this.baseFolder = baseFolder;
         this.readFolder = readFolder;
         this.writeFolder = writeFolder;
         assertNotNull("setConfig manager", manager);
         assertNotNull("setConfig providerConfig", providerConfig);
         assertNotNull("setConfig baseFolder", baseFolder);
         assertNotNull("setConfig readFolder", readFolder);
         assertNotNull("setConfig writeFolder", writeFolder);
     }

     /**
      * Returns the file system manager used by this test.
      */
     protected DefaultFileSystemManager getManager() {
         return manager;
     }

     /**
      * creates a new uninitialized file system manager
      *
      * @throws Exception
      */
     protected DefaultFileSystemManager createManager() throws Exception {
         final DefaultFileSystemManager fs = getProviderConfig().getDefaultFileSystemManager();
         fs.setFilesCache(getProviderConfig().getFilesCache());
         getProviderConfig().prepare(fs);
         if (!fs.hasProvider("file")) {
             fs.addProvider("file", new DefaultLocalFileProvider());
         }
         return fs;
     }

     /**
      * some provider config do some post-initialization in getBaseTestFolder. This is a hack to allow access to this
      * code for {@code createManager}
      */
     public FileObject getBaseTestFolder(final FileSystemManager fs) throws Exception {
         return providerConfig.getBaseTestFolder(fs);
     }

     protected FileSystem getFileSystem() {
         final FileObject rFolder = getReadFolder();
         Assert.assertNotNull("This test's read folder should not be null", rFolder);
         return rFolder.getFileSystem();
     }

     /**
      * Returns the base test folder. This is the parent of both the read test and write test folders.
      */
     public FileObject getBaseFolder() {
         return baseFolder;
     }

     /**
      * get the provider configuration
      */
     public ProviderTestConfig getProviderConfig() {
         return providerConfig;
     }

     /**
      * Returns the read test folder.
      */
     protected FileObject getReadFolder() {
         return readFolder;
     }

     /**
      * Returns the write test folder.
      */
     protected FileObject getWriteFolder() {
         return writeFolder;
     }

     /**
      * Sets the write test folder.
      *
      * @param folder
      */
     protected void setWriteFolder(final FileObject folder) {
         writeFolder = folder;
     }

     /**
      * Returns the capabilities required by the tests of this test case. The tests are not run if the provider being
      * tested does not support all the required capabilities. Return null or an empty array to always run the tests.
      * <p>
      * This implementation returns null.
      */
     protected Capability[] getRequiredCapabilities() {
         return null;
     }

     /**
      * Runs the test. This implementation short-circuits the test if the provider being tested does not have the
      * capabilities required by this test.
      * <p>
      * TODO - Handle negative caps as well - ie, only run a test if the provider does not have certain caps.
      * </p>
      * <p>
      * TODO - Figure out how to remove the test from the TestResult if the test is skipped.
      * </p>
      */
     @Override
     protected void runTest() throws Throwable {
         // Check the capabilities
         final Capability[] caps = getRequiredCapabilities();
         if (caps != null) {
             for (final Capability cap2 : caps) {
                 final Capability cap = cap2;
                 final FileSystem fs = getFileSystem();
                 if (!fs.hasCapability(cap)) {
                     // String name = fs.getClass().getName();
                     // int index = name.lastIndexOf('.');
                     // String fsName = (index > 0) ? name.substring(index + 1) : name;
                     // System.out.println("skipping " + getName() + " because " +
                     // fsName + " does not have capability " + cap);
                     return;
                 }
             }
         }

         // Provider has all the capabilities - execute the test
         if (method != null) {
             try {
                 method.invoke(this, (Object[]) null);
             } catch (final InvocationTargetException e) {
                 throw e.getTargetException();
             }
         } else {
             super.runTest();
         }

         if (readFolder != null && ((AbstractFileSystem) readFolder.getFileSystem()).isOpen()) {
             String name = "unknown";
             if (method != null) {
                 name = method.getName();
             }

             throw new IllegalStateException(getClass().getName() + ": filesystem has open streams after: " + name);
         }
     }

     /**
      * Asserts that the content of a file is the same as expected. Checks the length reported by getContentLength() is
      * correct, then reads the content as a byte stream and compares the result with the expected content. Assumes files
      * are encoded using UTF-8.
      */
     protected void assertSameURLContent(final String expected, final URLConnection connection) throws Exception {
         // Get file content as a binary stream
         final byte[] expectedBin = expected.getBytes(StandardCharsets.UTF_8);

         // Check lengths
         assertEquals("same content length", expectedBin.length, connection.getContentLength());

         // Read content into byte array
         final InputStream instr = connection.getInputStream();
         final ByteArrayOutputStream outstr;
         try {
             outstr = new ByteArrayOutputStream();
             final byte[] buffer = new byte[256];
             int nread = 0;
             while (nread >= 0) {
                 outstr.write(buffer, 0, nread);
                 nread = instr.read(buffer);
             }
         } finally {
             instr.close();
         }

         // Compare
         assertArrayEquals("same binary content", expectedBin, outstr.toByteArray());
     }

     /**
      * Asserts that the content of a file is the same as expected. Checks the length reported by getSize() is correct,
      * then reads the content as a byte stream and compares the result with the expected content. Assumes files are
      * encoded using UTF-8.
      */
     protected void assertSameContent(final String expected, final FileObject file) throws Exception {
         // Check the file exists, and is a file
         assertTrue(file.exists());
         assertSame(FileType.FILE, file.getType());
         assertTrue(file.isFile());

         // Get file content as a binary stream
         final byte[] expectedBin = expected.getBytes(StandardCharsets.UTF_8);

         // Check lengths
         final FileContent content = file.getContent();
         assertEquals("same content length", expectedBin.length, content.getSize());

         // Read content into byte array
         final InputStream instr = content.getInputStream();
         final ByteArrayOutputStream outstr;
         try {
             outstr = new ByteArrayOutputStream(expectedBin.length);
             final byte[] buffer = new byte[256];
             int nread = 0;
             while (nread >= 0) {
                 outstr.write(buffer, 0, nread);
                 nread = instr.read(buffer);
             }
         } finally {
             instr.close();
         }

         // Compare
         assertArrayEquals("same binary content", expectedBin, outstr.toByteArray());
     }

     /**
      * Builds the expected structure of the read tests folder.
      *
      * @throws FileSystemException (possibly)
      */
     protected FileInfo buildExpectedStructure() throws FileSystemException {
         // Build the expected structure
         final FileInfo base = new FileInfo(getReadFolder().getName().getBaseName(), FileType.FOLDER);
         base.addFile("file1.txt", FILE1_CONTENT);
         // file%.txt - test out encoding
         base.addFile("file%25.txt", FILE1_CONTENT);

         // file?test.txt - test out encoding (test.txt is not the queryString)
         // as we do not know if the current file provider we need to
         // ask it to normalize the name
         // todo: move this into the FileInfo class to do it generally?
         /*
          * webdav-bug?: didnt manage to get the "?" correctly through webdavlib FileSystemManager fsm =
          * getReadFolder().getFileSystem().getFileSystemManager(); FileName fn =
          * fsm.resolveName(getReadFolder().getName(), "file%3ftest.txt"); String baseName = fn.getBaseName();
          * base.addFile(baseName, FILE1_CONTENT);
          */
         base.addFile("file space.txt", FILE1_CONTENT);

         base.addFile("empty.txt", "");
         if (addEmptyDir) {
             base.addFolder("emptydir");
         }

         final FileInfo dir = base.addFolder("dir1");
         dir.addFile("file1.txt", TEST_FILE_CONTENT);
         dir.addFile("file2.txt", TEST_FILE_CONTENT);
         dir.addFile("file3.txt", TEST_FILE_CONTENT);

         final FileInfo subdir1 = dir.addFolder("subdir1");
         subdir1.addFile("file1.txt", TEST_FILE_CONTENT);
         subdir1.addFile("file2.txt", TEST_FILE_CONTENT);
         subdir1.addFile("file3.txt", TEST_FILE_CONTENT);

         final FileInfo subdir2 = dir.addFolder("subdir2");
         subdir2.addFile("file1.txt", TEST_FILE_CONTENT);
         subdir2.addFile("file2.txt", TEST_FILE_CONTENT);
         subdir2.addFile("file3.txt", TEST_FILE_CONTENT);

         final FileInfo subdir3 = dir.addFolder("subdir3");
         subdir3.addFile("file1.txt", TEST_FILE_CONTENT);
         subdir3.addFile("file2.txt", TEST_FILE_CONTENT);
         subdir3.addFile("file3.txt", TEST_FILE_CONTENT);

         final FileInfo subdir4 = dir.addFolder("subdir4.jar");
         subdir4.addFile("file1.txt", TEST_FILE_CONTENT);
         subdir4.addFile("file2.txt", TEST_FILE_CONTENT);
         subdir4.addFile("file3.txt", TEST_FILE_CONTENT);

         return base;
     }

     protected void addEmptyDir(final boolean addEmptyDir) {
         this.addEmptyDir = addEmptyDir;
     }

     protected static Test notConfigured(final Class<?> testClass) {
         return warning(testClass + " is not configured for tests, skipping");
     }

     private static Test warning(final String message) {
         return new TestCase("warning") {
             @Override
             protected void runTest() {
                 System.out.println(message);
             }
         };
     }

     @Override
     public String toString() {
         return "AbstractProviderTestCase [baseFolder=" + baseFolder + ", readFolder=" + readFolder + ", writeFolder="
                 + writeFolder + ", manager=" + manager + ", providerConfig=" + providerConfig + ", method=" + method
                 + ", addEmptyDir=" + addEmptyDir + "]";
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You 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.apache.commons.vfs2;

	import static org.junit.Assert.assertArrayEquals;

	import java.io.ByteArrayOutputStream;
	import java.io.InputStream;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;
	import java.net.URLConnection;
	import java.nio.charset.StandardCharsets;

	import org.apache.commons.vfs2.impl.DefaultFileSystemManager;
	import org.apache.commons.vfs2.provider.AbstractFileSystem;
	import org.apache.commons.vfs2.provider.local.DefaultLocalFileProvider;
	import org.junit.Assert;

	import junit.framework.Test;
	import junit.framework.TestCase;

	/**
	* File system test cases, which verifies the structure and naming functionality.
	* <p>
	* Works from a base folder, and assumes a particular structure under that base folder.
	*/
	public abstract class AbstractProviderTestCase extends AbstractVfsTestCase {
	private FileObject baseFolder;
	private FileObject readFolder;
	private FileObject writeFolder;
	private DefaultFileSystemManager manager;
	private ProviderTestConfig providerConfig;
	private Method method;
	private boolean addEmptyDir;

	// Expected contents of "file1.txt"
	public static final String FILE1_CONTENT = "This is a test file.";

	// Expected contents of test files
	public static final String TEST_FILE_CONTENT = "A test file.";

	/**
	* Sets the test method.
	*/
	public void setMethod(final Method method) {
	this.method = method;
	}

	/**
	* Configures this test.
	*/
	public void setConfig(final DefaultFileSystemManager manager, final ProviderTestConfig providerConfig,
	final FileObject baseFolder, final FileObject readFolder, final FileObject writeFolder) {
	this.manager = manager;
	this.providerConfig = providerConfig;
	this.baseFolder = baseFolder;
	this.readFolder = readFolder;
	this.writeFolder = writeFolder;
	assertNotNull("setConfig manager", manager);
	assertNotNull("setConfig providerConfig", providerConfig);
	assertNotNull("setConfig baseFolder", baseFolder);
	assertNotNull("setConfig readFolder", readFolder);
	assertNotNull("setConfig writeFolder", writeFolder);
	}

	/**
	* Returns the file system manager used by this test.
	*/
	protected DefaultFileSystemManager getManager() {
	return manager;
	}

	/**
	* creates a new uninitialized file system manager
	*
	* @throws Exception
	*/
	protected DefaultFileSystemManager createManager() throws Exception {
	final DefaultFileSystemManager fs = getProviderConfig().getDefaultFileSystemManager();
	fs.setFilesCache(getProviderConfig().getFilesCache());
	getProviderConfig().prepare(fs);
	if (!fs.hasProvider("file")) {
	fs.addProvider("file", new DefaultLocalFileProvider());
	}
	return fs;
	}

	/**
	* some provider config do some post-initialization in getBaseTestFolder. This is a hack to allow access to this
	* code for {@code createManager}
	*/
	public FileObject getBaseTestFolder(final FileSystemManager fs) throws Exception {
	return providerConfig.getBaseTestFolder(fs);
	}

	protected FileSystem getFileSystem() {
	final FileObject rFolder = getReadFolder();
	Assert.assertNotNull("This test's read folder should not be null", rFolder);
	return rFolder.getFileSystem();
	}

	/**
	* Returns the base test folder. This is the parent of both the read test and write test folders.
	*/
	public FileObject getBaseFolder() {
	return baseFolder;
	}

	/**
	* get the provider configuration
	*/
	public ProviderTestConfig getProviderConfig() {
	return providerConfig;
	}

	/**
	* Returns the read test folder.
	*/
	protected FileObject getReadFolder() {
	return readFolder;
	}

	/**
	* Returns the write test folder.
	*/
	protected FileObject getWriteFolder() {
	return writeFolder;
	}

	/**
	* Sets the write test folder.
	*
	* @param folder
	*/
	protected void setWriteFolder(final FileObject folder) {
	writeFolder = folder;
	}

	/**
	* Returns the capabilities required by the tests of this test case. The tests are not run if the provider being
	* tested does not support all the required capabilities. Return null or an empty array to always run the tests.
	* <p>
	* This implementation returns null.
	*/
	protected Capability[] getRequiredCapabilities() {
	return null;
	}

	/**
	* Runs the test. This implementation short-circuits the test if the provider being tested does not have the
	* capabilities required by this test.
	* <p>
	* TODO - Handle negative caps as well - ie, only run a test if the provider does not have certain caps.
	* </p>
	* <p>
	* TODO - Figure out how to remove the test from the TestResult if the test is skipped.
	* </p>
	*/
	@Override
	protected void runTest() throws Throwable {
	// Check the capabilities
	final Capability[] caps = getRequiredCapabilities();
	if (caps != null) {
	for (final Capability cap2 : caps) {
	final Capability cap = cap2;
	final FileSystem fs = getFileSystem();
	if (!fs.hasCapability(cap)) {
	// String name = fs.getClass().getName();
	// int index = name.lastIndexOf('.');
	// String fsName = (index > 0) ? name.substring(index + 1) : name;
	// System.out.println("skipping " + getName() + " because " +
	// fsName + " does not have capability " + cap);
	return;
	}
	}
	}

	// Provider has all the capabilities - execute the test
	if (method != null) {
	try {
	method.invoke(this, (Object[]) null);
	} catch (final InvocationTargetException e) {
	throw e.getTargetException();
	}
	} else {
	super.runTest();
	}

	if (readFolder != null && ((AbstractFileSystem) readFolder.getFileSystem()).isOpen()) {
	String name = "unknown";
	if (method != null) {
	name = method.getName();
	}

	throw new IllegalStateException(getClass().getName() + ": filesystem has open streams after: " + name);
	}
	}

	/**
	* Asserts that the content of a file is the same as expected. Checks the length reported by getContentLength() is
	* correct, then reads the content as a byte stream and compares the result with the expected content. Assumes files
	* are encoded using UTF-8.
	*/
	protected void assertSameURLContent(final String expected, final URLConnection connection) throws Exception {
	// Get file content as a binary stream
	final byte[] expectedBin = expected.getBytes(StandardCharsets.UTF_8);

	// Check lengths
	assertEquals("same content length", expectedBin.length, connection.getContentLength());

	// Read content into byte array
	final InputStream instr = connection.getInputStream();
	final ByteArrayOutputStream outstr;
	try {
	outstr = new ByteArrayOutputStream();
	final byte[] buffer = new byte[256];
	int nread = 0;
	while (nread >= 0) {
	outstr.write(buffer, 0, nread);
	nread = instr.read(buffer);
	}
	} finally {
	instr.close();
	}

	// Compare
	assertArrayEquals("same binary content", expectedBin, outstr.toByteArray());
	}

	/**
	* Asserts that the content of a file is the same as expected. Checks the length reported by getSize() is correct,
	* then reads the content as a byte stream and compares the result with the expected content. Assumes files are
	* encoded using UTF-8.
	*/
	protected void assertSameContent(final String expected, final FileObject file) throws Exception {
	// Check the file exists, and is a file
	assertTrue(file.exists());
	assertSame(FileType.FILE, file.getType());
	assertTrue(file.isFile());

	// Get file content as a binary stream
	final byte[] expectedBin = expected.getBytes(StandardCharsets.UTF_8);

	// Check lengths
	final FileContent content = file.getContent();
	assertEquals("same content length", expectedBin.length, content.getSize());

	// Read content into byte array
	final InputStream instr = content.getInputStream();
	final ByteArrayOutputStream outstr;
	try {
	outstr = new ByteArrayOutputStream(expectedBin.length);
	final byte[] buffer = new byte[256];
	int nread = 0;
	while (nread >= 0) {
	outstr.write(buffer, 0, nread);
	nread = instr.read(buffer);
	}
	} finally {
	instr.close();
	}

	// Compare
	assertArrayEquals("same binary content", expectedBin, outstr.toByteArray());
	}

	/**
	* Builds the expected structure of the read tests folder.
	*
	* @throws FileSystemException (possibly)
	*/
	protected FileInfo buildExpectedStructure() throws FileSystemException {
	// Build the expected structure
	final FileInfo base = new FileInfo(getReadFolder().getName().getBaseName(), FileType.FOLDER);
	base.addFile("file1.txt", FILE1_CONTENT);
	// file%.txt - test out encoding
	base.addFile("file%25.txt", FILE1_CONTENT);

	// file?test.txt - test out encoding (test.txt is not the queryString)
	// as we do not know if the current file provider we need to
	// ask it to normalize the name
	// todo: move this into the FileInfo class to do it generally?
	/*
	* webdav-bug?: didnt manage to get the "?" correctly through webdavlib FileSystemManager fsm =
	* getReadFolder().getFileSystem().getFileSystemManager(); FileName fn =
	* fsm.resolveName(getReadFolder().getName(), "file%3ftest.txt"); String baseName = fn.getBaseName();
	* base.addFile(baseName, FILE1_CONTENT);
	*/
	base.addFile("file space.txt", FILE1_CONTENT);

	base.addFile("empty.txt", "");
	if (addEmptyDir) {
	base.addFolder("emptydir");
	}

	final FileInfo dir = base.addFolder("dir1");
	dir.addFile("file1.txt", TEST_FILE_CONTENT);
	dir.addFile("file2.txt", TEST_FILE_CONTENT);
	dir.addFile("file3.txt", TEST_FILE_CONTENT);

	final FileInfo subdir1 = dir.addFolder("subdir1");
	subdir1.addFile("file1.txt", TEST_FILE_CONTENT);
	subdir1.addFile("file2.txt", TEST_FILE_CONTENT);
	subdir1.addFile("file3.txt", TEST_FILE_CONTENT);

	final FileInfo subdir2 = dir.addFolder("subdir2");
	subdir2.addFile("file1.txt", TEST_FILE_CONTENT);
	subdir2.addFile("file2.txt", TEST_FILE_CONTENT);
	subdir2.addFile("file3.txt", TEST_FILE_CONTENT);

	final FileInfo subdir3 = dir.addFolder("subdir3");
	subdir3.addFile("file1.txt", TEST_FILE_CONTENT);
	subdir3.addFile("file2.txt", TEST_FILE_CONTENT);
	subdir3.addFile("file3.txt", TEST_FILE_CONTENT);

	final FileInfo subdir4 = dir.addFolder("subdir4.jar");
	subdir4.addFile("file1.txt", TEST_FILE_CONTENT);
	subdir4.addFile("file2.txt", TEST_FILE_CONTENT);
	subdir4.addFile("file3.txt", TEST_FILE_CONTENT);

	return base;
	}

	protected void addEmptyDir(final boolean addEmptyDir) {
	this.addEmptyDir = addEmptyDir;
	}

	protected static Test notConfigured(final Class<?> testClass) {
	return warning(testClass + " is not configured for tests, skipping");
	}

	private static Test warning(final String message) {
	return new TestCase("warning") {
	@Override
	protected void runTest() {
	System.out.println(message);
	}
	};
	}

	@Override
	public String toString() {
	return "AbstractProviderTestCase [baseFolder=" + baseFolder + ", readFolder=" + readFolder + ", writeFolder="
	+ writeFolder + ", manager=" + manager + ", providerConfig=" + providerConfig + ", method=" + method
	+ ", addEmptyDir=" + addEmptyDir + "]";
	}
	}