org.springframework.webflow.test.execution.AbstractExternalizedFlowExecutionTests Maven / Gradle / Ivy
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* Copyright 2004-2007 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,
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* See the License for the specific language governing permissions and
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*/
package org.springframework.webflow.test.execution;
import java.io.File;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.webflow.core.collection.AttributeMap;
import org.springframework.webflow.definition.FlowDefinition;
import org.springframework.webflow.definition.registry.FlowDefinitionResource;
import org.springframework.webflow.engine.Flow;
import org.springframework.webflow.engine.builder.FlowAssembler;
import org.springframework.webflow.engine.builder.FlowBuilder;
import org.springframework.webflow.engine.builder.FlowServiceLocator;
import org.springframework.webflow.engine.impl.FlowExecutionImplFactory;
import org.springframework.webflow.execution.FlowExecutionListener;
import org.springframework.webflow.execution.factory.StaticFlowExecutionListenerLoader;
import org.springframework.webflow.test.MockFlowServiceLocator;
/**
* Base class for flow integration tests that verify an externalized flow definition executes as expected. Supports
* caching of the flow definition built from an externalized resource to speed up test execution.
*
* @author Keith Donald
*/
public abstract class AbstractExternalizedFlowExecutionTests extends AbstractFlowExecutionTests {
/**
* The cached flow definition.
*/
private static FlowDefinition cachedFlowDefinition;
/**
* The flag indicating if the flow definition built from an externalized resource as part of this test should be
* cached.
*/
private boolean cacheFlowDefinition = false;
/**
* Constructs a default externalized flow execution test.
* @see #setName(String)
*/
public AbstractExternalizedFlowExecutionTests() {
super();
}
/**
* Constructs an externalized flow execution test with given name.
* @param name the name of the test
* @since 1.0.2
*/
public AbstractExternalizedFlowExecutionTests(String name) {
super(name);
}
/**
* Internal helper that returns the flow execution factory used by the test cast to a
* {@link FlowExecutionImplFactory}.
*/
private FlowExecutionImplFactory getFlowExecutionImplFactory() {
return (FlowExecutionImplFactory) getFlowExecutionFactory();
}
/**
* Returns if flow definition caching is turned on.
*/
protected boolean isCacheFlowDefinition() {
return cacheFlowDefinition;
}
/**
* Sets the flag indicating if the flow definition built from an externalized resource as part of this test should
* be cached. Default is false.
*/
protected void setCacheFlowDefinition(boolean cacheFlowDefinition) {
this.cacheFlowDefinition = cacheFlowDefinition;
}
/**
* Sets system attributes to be associated with the flow execution the next time one is {@link #startFlow() started}
* by this test. Useful for assigning attributes that influence flow execution behavior.
* @param executionAttributes the system attributes to assign
*/
protected void setFlowExecutionAttributes(AttributeMap executionAttributes) {
getFlowExecutionImplFactory().setExecutionAttributes(executionAttributes);
}
/**
* Set a single listener to be attached to the flow execution the next time one is {@link #startFlow() started} by
* this test. Useful for attaching a listener that does test assertions during the execution of the flow.
* @param executionListener the listener to attach
*/
protected void setFlowExecutionListener(FlowExecutionListener executionListener) {
getFlowExecutionImplFactory().setExecutionListenerLoader(
new StaticFlowExecutionListenerLoader(executionListener));
}
/**
* Set the listeners to be attached to the flow execution the next time one is {@link #startFlow() started} by this
* test. Useful for attaching listeners that do test assertions during the execution of the flow.
* @param executionListeners the listeners to attach
* @since 1.0.4
*/
protected void setFlowExecutionListeners(FlowExecutionListener[] executionListeners) {
getFlowExecutionImplFactory().setExecutionListenerLoader(
new StaticFlowExecutionListenerLoader(executionListeners));
}
/**
* Returns the flow definition being tested.
*/
protected final FlowDefinition getFlowDefinition() {
if (isCacheFlowDefinition() && cachedFlowDefinition != null) {
return cachedFlowDefinition;
}
FlowServiceLocator flowServiceLocator = createFlowServiceLocator();
Flow flow = createFlow(getFlowDefinitionResource(), flowServiceLocator);
if (isCacheFlowDefinition()) {
cachedFlowDefinition = flow;
}
return flow;
}
/**
* Returns the flow service locator to use during flow definition construction time for accessing externally managed
* flow artifacts such as actions and flows to be used as subflows.
*
* This implementation just creates a {@link MockFlowServiceLocator} and populates it with services by calling
* {@link #registerMockServices(MockFlowServiceLocator)}.
* @return the flow artifact factory
*/
protected FlowServiceLocator createFlowServiceLocator() {
MockFlowServiceLocator serviceLocator = new MockFlowServiceLocator();
registerMockServices(serviceLocator);
return serviceLocator;
}
/**
* Template method called by {@link #createFlowServiceLocator()} to allow registration of mock implementations of
* services needed to test the flow execution. Useful when testing flow definitions in execution in isolation from
* flows and middle-tier services. Subclasses may override.
* @param serviceRegistry the mock service registry (and locator)
*/
protected void registerMockServices(MockFlowServiceLocator serviceRegistry) {
}
/**
* Factory method to assemble a flow definition from a resource. Called by {@link #getFlowDefinition()} to create
* the "main" flow to test. May also be called by subclasses to create subflow definitions whose executions should
* also be exercised by this test.
* @param resource the flow definition resource
* @return the built flow definition, ready for execution
* @see #createFlowBuilder(Resource, FlowServiceLocator)
*/
protected final Flow createFlow(FlowDefinitionResource resource, FlowServiceLocator serviceLocator) {
FlowBuilder builder = createFlowBuilder(resource.getLocation(), serviceLocator);
FlowAssembler assembler = new FlowAssembler(resource.getId(), resource.getAttributes(), builder);
return assembler.assembleFlow();
}
/**
* Returns the pointer to the resource that houses the definition of the flow to be tested. Subclasses must
* implement.
*
* Example usage:
*
*
* protected FlowDefinitionResource getFlowDefinitionResource() {
* return createFlowDefinitionResource("/WEB-INF/flows/order-flow.xml");
* }
*
*
* @return the flow definition resource
*/
protected abstract FlowDefinitionResource getFlowDefinitionResource();
/**
* Factory method to create the builder that will build the flow definition whose execution will be tested.
* Subclasses must implement.
*
* A subclass may return a builder that sets up mock implementations of services needed locally by the flow
* definition at runtime.
* @param resource the externalized flow definition resource location
* @param serviceLocator the flow service locator
* @return the flow builder that will build the flow to be tested
*/
protected abstract FlowBuilder createFlowBuilder(Resource resource, FlowServiceLocator serviceLocator);
/**
* Convenient factory method that creates a {@link FlowDefinitionResource} from a file path. Typically called by
* subclasses overriding {@link #getFlowDefinitionResource()}.
* @param filePath the full path to the externalized flow definition file
* @return the flow definition resource
*/
protected final FlowDefinitionResource createFlowDefinitionResource(String filePath) {
return createFlowDefinitionResource(new File(filePath));
}
/**
* Convenient factory method that creates a {@link FlowDefinitionResource} from a file in a directory. Typically
* called by subclasses overriding {@link #getFlowDefinitionResource()}.
* @param fileDirectory the directory containing the file
* @param fileName the short file name
* @return the flow definition resource pointing to the file
*/
protected final FlowDefinitionResource createFlowDefinitionResource(String fileDirectory, String fileName) {
return createFlowDefinitionResource(new File(fileDirectory, fileName));
}
/**
* Convenient factory method that creates a {@link FlowDefinitionResource} from a file. Typically called by
* subclasses overriding {@link #getFlowDefinitionResource()}.
* @param file the file
* @return the flow definition resource
*/
protected FlowDefinitionResource createFlowDefinitionResource(File file) {
return new FlowDefinitionResource(new FileSystemResource(file));
}
}