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/*
* Copyright 2000-2014 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.integration;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.junit.runners.Parameterized.Parameters;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.InitializationError;
import com.vaadin.tests.tb3.TB3Runner;
/**
* TestBench test runner which supports static @Parameters annotated methods
* providing parameters for the corresponding setter.
* <p>
* {@code @Parameters public static Collection<String> getThemes() } creates one
* permutation for each value returned by {@code getThemes()}. The value is
* automatically assigned to the test instance using {@code setTheme(String)}
* before invoking the test method
*
* @author Vaadin Ltd
*/
public class ParameterizedTB3Runner extends TB3Runner {
public ParameterizedTB3Runner(Class<?> klass) throws InitializationError {
super(klass);
}
@Override
protected List<FrameworkMethod> computeTestMethods() {
List<FrameworkMethod> methods = super.computeTestMethods();
Map<Method, Collection<String>> parameters = new LinkedHashMap<Method, Collection<String>>();
// Find all @Parameters methods and invoke them to find out permutations
for (Method m : getTestClass().getJavaClass().getMethods()) {
Parameters p = m.getAnnotation(Parameters.class);
if (p == null) {
continue;
}
if (!m.getName().startsWith("get") || !m.getName().endsWith("s")) {
throw new IllegalStateException(
"Method "
+ m.getName()
+ " is annotated with @Parameter but is not named getSomeThings() as it should");
}
if (m.getParameterTypes().length != 0) {
throw new IllegalStateException(
"Method "
+ m.getName()
+ " annotated with @Parameter should not have any arguments");
}
if (!Modifier.isStatic(m.getModifiers())) {
throw new IllegalStateException("Method " + m.getName()
+ " annotated with @Parameter must be static");
}
// getThemes -> setTheme
String setter = "set" + m.getName().substring("get".length());
setter = setter.substring(0, setter.length() - 1);
// property = property.substring(0, 1).toLowerCase()
// + property.substring(1);
Method setterMethod;
try {
setterMethod = getTestClass().getJavaClass().getMethod(setter,
String.class);
} catch (Exception e) {
throw new IllegalStateException("No setter " + setter
+ " found in "
+ getTestClass().getJavaClass().getName(), e);
}
Collection<String> values;
try {
values = (Collection<String>) m.invoke(null);
if (!values.isEmpty()) {
// Ignore any empty collections to allow e.g. intergration
// tests to use "/demo" path by default without adding that
// to the screnshot name
parameters.put(setterMethod, values);
}
} catch (Exception e) {
e.printStackTrace();
}
}
// Add method permutations for all @Parameters
for (Method setter : parameters.keySet()) {
List<FrameworkMethod> newMethods = new ArrayList<FrameworkMethod>();
for (FrameworkMethod m : methods) {
if (!(m instanceof TBMethod)) {
System.err.println("Unknown method type: "
+ m.getClass().getName());
newMethods.add(m);
continue;
}
// testFoo
// testBar
// ->
// testFoo[valo]
// testFoo[runo]
// testBar[valo]
// testBar[runo]
for (final String value : parameters.get(setter)) {
newMethods.add(new TBMethodWithBefore((TBMethod) m, setter,
value));
}
}
// Update methods so next parameters will use all expanded methods
methods = newMethods;
}
return methods;
}
public static class TBMethodWithBefore extends TBMethod {
private Method setter;
private String value;
private TBMethod parent;
public TBMethodWithBefore(TBMethod m, Method setter, String value) {
super(m.getMethod(), m.getCapabilities());
parent = m;
this.setter = setter;
this.value = value;
}
@Override
public Object invokeExplosively(Object target, Object... params)
throws Throwable {
setter.invoke(target, value);
return parent.invokeExplosively(target, params);
}
@Override
public String getName() {
return parent.getName() + "[" + value + "]";
};
}
}
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