Spring Framework example source code file (ResourceScriptSourceTests.java)

This example Spring Framework source code file (ResourceScriptSourceTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

bytearrayinputstream, exception, exception, file, file, illegalargumentexception, io, ioexception, mockcontrol, must, resource, resource, resourcescriptsource, resourcescriptsource, testcase

The Spring Framework ResourceScriptSourceTests.java source code

/*
 * Copyright 2002-2008 the original author or authors.
 *
 * 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.springframework.scripting.support;

import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import junit.framework.TestCase;
import org.easymock.MockControl;

import org.springframework.core.io.ByteArrayResource;
import org.springframework.core.io.Resource;

/**
 * @author Rick Evans
 * @author Juergen Hoeller
 */
public class ResourceScriptSourceTests extends TestCase {

	public void testCtorWithNullResource() throws Exception {
		try {
			new ResourceScriptSource(null);
			fail("Must have thrown exception by this point.");
		}
		catch (IllegalArgumentException expected) {
		}
	}

	public void testDoesNotPropagateFatalExceptionOnResourceThatCannotBeResolvedToAFile() throws Exception {
		MockControl mock = MockControl.createControl(Resource.class);
		Resource resource = (Resource) mock.getMock();
		resource.lastModified();
		mock.setThrowable(new IOException());
		mock.replay();

		ResourceScriptSource scriptSource = new ResourceScriptSource(resource);
		long lastModified = scriptSource.retrieveLastModifiedTime();
		assertEquals(0, lastModified);
		mock.verify();
	}

	public void testBeginsInModifiedState() throws Exception {
		MockControl mock = MockControl.createControl(Resource.class);
		Resource resource = (Resource) mock.getMock();
		mock.replay();

		ResourceScriptSource scriptSource = new ResourceScriptSource(resource);
		assertTrue(scriptSource.isModified());
		mock.verify();
	}

	public void testLastModifiedWorksWithResourceThatDoesNotSupportFileBasedReading() throws Exception {
		MockControl mock = MockControl.createControl(Resource.class);
		Resource resource = (Resource) mock.getMock();
		// underlying File is asked for so that the last modified time can be checked...
		resource.lastModified();
		mock.setReturnValue(100, 2);
		// does not support File-based reading; delegates to InputStream-style reading...
		resource.getFile();
		mock.setThrowable(new FileNotFoundException());
		resource.getInputStream();
		mock.setReturnValue(new ByteArrayInputStream(new byte[0]));
		// And then mock the file changing; i.e. the File says it has been modified
		resource.lastModified();
		mock.setReturnValue(200);
		mock.replay();

		ResourceScriptSource scriptSource = new ResourceScriptSource(resource);
		assertTrue("ResourceScriptSource must start off in the 'isModified' state (it obviously isn't).", scriptSource.isModified());
		scriptSource.getScriptAsString();
		assertFalse("ResourceScriptSource must not report back as being modified if the underlying File resource is not reporting a changed lastModified time.", scriptSource.isModified());
		// Must now report back as having been modified
		assertTrue("ResourceScriptSource must report back as being modified if the underlying File resource is reporting a changed lastModified time.", scriptSource.isModified());
		mock.verify();
	}

	public void testLastModifiedWorksWithResourceThatDoesNotSupportFileBasedAccessAtAll() throws Exception {
		Resource resource = new ByteArrayResource(new byte[0]);
		ResourceScriptSource scriptSource = new ResourceScriptSource(resource);
		assertTrue("ResourceScriptSource must start off in the 'isModified' state (it obviously isn't).", scriptSource.isModified());
		scriptSource.getScriptAsString();
		assertFalse("ResourceScriptSource must not report back as being modified if the underlying File resource is not reporting a changed lastModified time.", scriptSource.isModified());
		// Must now continue to report back as not having been modified 'cos the Resource does not support access as a File (and so the lastModified date cannot be determined).
		assertFalse("ResourceScriptSource must not report back as being modified if the underlying File resource is not reporting a changed lastModified time.", scriptSource.isModified());
	}

}