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/*
* Copyright 2000-2013 Vaadin Ltd.
*
* 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.vaadin.tests.tb3;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import org.junit.Test;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.InitializationError;
import org.junit.runners.model.Statement;
import org.openqa.selenium.remote.DesiredCapabilities;
import com.vaadin.tests.tb3.AbstractTB3Test.BrowserUtil;
/**
* This runner is loosely based on FactoryTestRunner by Ted Young
* (http://tedyoung.me/2011/01/23/junit-runtime-tests-custom-runners/). The
* generated test names give information about the parameters used (unlike
* {@link Parameterized}).
*
* @since 7.1
*/
public class TB3Runner extends BlockJUnit4ClassRunner {
public TB3Runner(Class<?> klass) throws InitializationError {
super(klass);
setScheduler(new ParallelScheduler());
}
@Override
protected List<FrameworkMethod> computeTestMethods() {
List<FrameworkMethod> tests = new LinkedList<FrameworkMethod>();
// Find all methods in our test class marked with @Parameters.
for (FrameworkMethod method : getTestClass().getAnnotatedMethods(
Parameters.class)) {
// Make sure the Parameters method is static
if (!Modifier.isStatic(method.getMethod().getModifiers())) {
throw new IllegalArgumentException("@Parameters " + method
+ " must be static.");
}
// Execute the method (statically)
Object params;
try {
params = method.getMethod().invoke(
getTestClass().getJavaClass());
} catch (Throwable t) {
throw new RuntimeException("Could not run test factory method "
+ method.getName(), t);
}
// Did the factory return an array? If so, make it a list.
if (params.getClass().isArray()) {
params = Arrays.asList((Object[]) params);
}
// Did the factory return a scalar object? If so, put it in a list.
if (!(params instanceof Iterable<?>)) {
params = Collections.singletonList(params);
}
// For each object returned by the factory.
for (Object param : (Iterable<?>) params) {
if (!(param instanceof DesiredCapabilities)) {
throw new RuntimeException("Unexpected parameter type "
+ param.getClass().getName()
+ " when expecting DesiredCapabilities");
}
DesiredCapabilities capabilities = (DesiredCapabilities) param;
// Find any methods marked with @Test.
for (FrameworkMethod m : getTestClass().getAnnotatedMethods(
Test.class)) {
tests.add(new TB3Method(m.getMethod(), capabilities));
}
}
}
return tests;
}
/*
* (non-Javadoc)
*
* @see
* org.junit.runners.BlockJUnit4ClassRunner#withBefores(org.junit.runners
* .model.FrameworkMethod, java.lang.Object,
* org.junit.runners.model.Statement)
*/
@Override
protected Statement withBefores(final FrameworkMethod method,
final Object target, Statement statement) {
if (!(method instanceof TB3Method)) {
throw new RuntimeException("Unexpected method type "
+ method.getClass().getName() + ", expected TB3Method");
}
final TB3Method tb3method = (TB3Method) method;
// setDesiredCapabilities before running the real @Befores (which use
// capabilities)
final Statement realBefores = super.withBefores(method, target,
statement);
return new Statement() {
@Override
public void evaluate() throws Throwable {
((AbstractTB3Test) target)
.setDesiredCapabilities(tb3method.capabilities);
try {
realBefores.evaluate();
} catch (Throwable t) {
// Give the test a chance to e.g. produce an error
// screenshot before failing the test by re-throwing the
// exception
((AbstractTB3Test) target).onUncaughtException(t);
throw t;
}
}
};
}
private static class TB3Method extends FrameworkMethod {
private DesiredCapabilities capabilities;
public TB3Method(Method method, DesiredCapabilities capabilities) {
super(method);
this.capabilities = capabilities;
}
@Override
public Object invokeExplosively(final Object target, Object... params)
throws Throwable {
// Executes the test method with the supplied parameters
return super.invokeExplosively(target);
}
@Override
public String getName() {
return String.format("%s[%s]", getMethod().getName(),
BrowserUtil.getUniqueIdentifier(capabilities));
}
}
}
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