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/*
* Copyright 2009 Google Inc.
*
* 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 com.google.gwt.junit;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.cfg.ConfigurationProperty;
import com.google.gwt.dev.cfg.ModuleDef;
import com.google.gwt.dev.cfg.ModuleDefLoader;
import com.google.gwt.dev.util.collect.HashSet;
import com.google.gwt.junit.JUnitShell.Strategy;
import com.google.gwt.junit.client.GWTTestCase;
import com.google.gwt.junit.client.impl.GWTRunner;
import com.google.gwt.junit.client.impl.JUnitHost.TestInfo;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* An interface that specifies how modules should be compiled.
*/
public abstract class CompileStrategy {
/**
* The list of modules that have already been compiled. We use this to avoid
* adding test batches that have already been added.
*/
private Set compiledModuleNames = new HashSet();
private final JUnitShell junitShell;
/**
* Construct a CompileStrategy.
*
* @param junitShell
*/
public CompileStrategy(JUnitShell junitShell) {
this.junitShell = junitShell;
}
/**
* Maybe add a test block for the currently executed test case.
*
* @param testCase the test case being run
* @param batchingStrategy the batching strategy
*/
public void maybeAddTestBlockForCurrentTest(GWTTestCase testCase,
BatchingStrategy batchingStrategy) {
if (batchingStrategy.isSingleTestOnly()) {
TestInfo testInfo = new TestInfo(testCase.getSyntheticModuleName(),
testCase.getClass().getName(), testCase.getName());
List testBlocks = new ArrayList(1);
testBlocks.add(new TestInfo[]{testInfo});
getMessageQueue().addTestBlocks(testBlocks, false);
}
}
/**
* Let the compile strategy compile another module. This is called while
* {@link JUnitShell} is waiting for the current test to complete.
*
* @throws UnableToCompleteException if the compilation fails
*/
public void maybeCompileAhead() throws UnableToCompleteException {
}
/**
* Compile a single module using a synthetic module that adds JUnit support.
*
* @param moduleName the module name
* @param syntheticModuleName the synthetic module name
* @param strategy the strategy
* @param batchingStrategy the batching strategy
* @param treeLogger the logger
* @return the {@link ModuleDef} describing the synthetic module
* @throws UnableToCompleteException
*/
public abstract ModuleDef maybeCompileModule(String moduleName,
String syntheticModuleName, Strategy strategy,
BatchingStrategy batchingStrategy, TreeLogger treeLogger)
throws UnableToCompleteException;
/**
* Compile a single module using a synthetic module that adds JUnit support.
*
* @param moduleName the module name
* @param syntheticModuleName the synthetic module name
* @param strategy the strategy
* @param batchingStrategy the batching strategy
* @param treeLogger the logger
* @return the {@link ModuleDef} describing the synthetic module
*/
protected ModuleDef maybeCompileModuleImpl(String moduleName,
String syntheticModuleName, Strategy strategy,
BatchingStrategy batchingStrategy, TreeLogger treeLogger)
throws UnableToCompleteException {
ModuleDef moduleDef = maybeCompileModuleImpl2(moduleName,
syntheticModuleName, strategy, treeLogger);
// Add all test blocks for the module if we haven't seen this module before.
if (!compiledModuleNames.contains(syntheticModuleName)) {
compiledModuleNames.add(syntheticModuleName);
if (!batchingStrategy.isSingleTestOnly()) {
// Use >= so we can mock getModuleCount and force isFinalModule to true
boolean isFinalModule = compiledModuleNames.size() >= getModuleCount();
List testBlocks = batchingStrategy.getTestBlocks(syntheticModuleName);
getMessageQueue().addTestBlocks(testBlocks, isFinalModule);
}
}
return moduleDef;
}
/**
* Visible for testing and mocking.
*
* @return the {@link JUnitMessageQueue}
*/
JUnitMessageQueue getMessageQueue() {
return JUnitShell.getMessageQueue();
}
/**
* Visible for testing and mocking.
*
* @return the number of modules to test
*/
int getModuleCount() {
return GWTTestCase.getModuleCount();
}
/**
* Compile the module if needed.
*
* Visible for testing and mocking.
*
* @param moduleName the module name
* @param syntheticModuleName the synthetic module name
* @param strategy the strategy
* @param treeLogger the logger
* @return the {@link ModuleDef} describing the synthetic module
*/
ModuleDef maybeCompileModuleImpl2(String moduleName,
String syntheticModuleName, Strategy strategy, TreeLogger treeLogger)
throws UnableToCompleteException {
/*
* Synthesize a synthetic module that derives from the user-specified module
* but also includes JUnit support.
*/
ModuleDef moduleDef = ModuleDefLoader.createSyntheticModule(
treeLogger, junitShell.getCompilerContext(), syntheticModuleName,
new String[] {moduleName, "com.google.gwt.junit.JUnit"}, false);
// Replace any user entry points with our test runner.
moduleDef.clearEntryPoints();
moduleDef.addEntryPointTypeName(GWTRunner.class.getName());
// Squirrel away the name of the active module for GWTRunnerGenerator
ConfigurationProperty moduleNameProp = moduleDef.getProperties().createConfiguration(
"junit.moduleName", false);
moduleNameProp.setValue(syntheticModuleName);
strategy.processModule(moduleDef);
junitShell.maybeCompileForWebMode(moduleDef, JUnitShell.getRemoteUserAgents());
return moduleDef;
}
}
