com.googlecode.gwt.test.GwtTest Maven / Gradle / Ivy
package com.googlecode.gwt.test;
import com.googlecode.gwt.test.exceptions.GwtTestException;
import com.googlecode.gwt.test.internal.AfterTestCallbackManager;
import com.googlecode.gwt.test.internal.GwtConfig;
import com.googlecode.gwt.test.internal.GwtFactory;
import com.googlecode.gwt.test.internal.GwtTestDataHolder;
import com.googlecode.gwt.test.utils.events.Browser.BrowserErrorHandler;
import junit.framework.JUnit4TestAdapter;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.assertj.core.api.Fail;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.runner.RunWith;
import org.junit.runners.model.TestClass;
import java.util.List;
/**
*
* Base class for test classes which need to manipulate (directly or indirectly) GWT components.
*
*
*
* It provides the mechanism which allows the instantiation of GWT components in the Java Virtual
* Machine, by beeing launched with the {@link GwtRunner} JUnit Runner.
*
*
*
* Class loading parameters used to instantiate classes referenced in tests can be configured using
* the META-INF\gwt-test-utils.properties file of your application.
*
*
* @author Gael Lazzari
*/
@RunWith(GwtRunner.class)
public abstract class GwtTest extends GwtModuleRunnerAdapter {
private static final BrowserErrorHandler FEST_BROWSER_ERROR_HANDLER = new BrowserErrorHandler() {
public void onError(String errorMessage) {
Fail.fail(errorMessage);
}
};
/**
* Bind the GwtClassLoader to the current thread
*/
@BeforeClass
public static final void bindClassLoader() {
Thread.currentThread().setContextClassLoader(GwtFactory.get().getClassLoader());
}
/**
* Unbind the static classloader instance from the current thread by binding the system
* classloader instead.
*/
@AfterClass
public static final void unbindClassLoader() {
Thread.currentThread().setContextClassLoader(GwtFactory.get().getClassLoader().getParent());
}
/**
* Setup a new gwt-test-utils test class.
*/
public GwtTest() {
TestClass testClass = new TestClass(this.getClass());
GwtConfig.get().setupGwtModule(testClass.getJavaClass());
GwtConfig.get().setupInstance(this);
}
@Before
public final void setUpGwtTest() throws Exception {
this.setCanDispatchEventsOnDetachedWidgets(true);
GwtTestDataHolder.get().setCurrentTestFailed(false);
}
@After
public final void tearDownGwtTest() throws Exception {
GwtReset.get().reset();
boolean currentTestFailed = GwtTestDataHolder.get().isCurrentTestFailed();
List throwables = AfterTestCallbackManager.get().triggerCallbacks();
if (!currentTestFailed && throwables.size() > 0) {
String error = (throwables.size() == 1)
? "One exception thrown during gwt-test-utils cleanup phase : "
: throwables.size()
+ " exceptions thrown during gwt-test-utils cleanup phase. First one is thrown :";
throw new GwtTestException(error, throwables.get(0));
}
}
/**
* Create a test instance compatible with JUnit 3 {@link Test} so that the current
* GwtTest can be added to a {@link TestSuite}.
*
* @return A JUnit Test adapter for this test.
*/
protected Test createJUnit4TestAdapter() {
return new JUnit4TestAdapter(this.getClass());
}
/*
* (non-Javadoc)
*
* @see com.googlecode.gwt.test.GwtModuleRunnerAdapter#getDefaultBrowserErrorHandler ()
*/
@Override
protected BrowserErrorHandler getDefaultBrowserErrorHandler() {
return FEST_BROWSER_ERROR_HANDLER;
}
}