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/*
* Copyright (C) 2008 The Android Open Source Project
*
* 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 android.test.suitebuilder;
import junit.framework.TestCase;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Represents a test to be run. Can be constructed without instantiating the TestCase or even
* loading the class.
*/
public class TestMethod {
private final String enclosingClassname;
private final String testMethodName;
private final Class<? extends TestCase> enclosingClass;
public TestMethod(Method method, Class<? extends TestCase> enclosingClass) {
this(method.getName(), enclosingClass);
}
public TestMethod(String methodName, Class<? extends TestCase> enclosingClass) {
this.enclosingClass = enclosingClass;
this.enclosingClassname = enclosingClass.getName();
this.testMethodName = methodName;
}
public TestMethod(TestCase testCase) {
this(testCase.getName(), testCase.getClass());
}
public String getName() {
return testMethodName;
}
public String getEnclosingClassname() {
return enclosingClassname;
}
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
try {
return getEnclosingClass().getMethod(getName()).getAnnotation(annotationClass);
} catch (NoSuchMethodException e) {
return null;
}
}
@SuppressWarnings("unchecked")
public Class<? extends TestCase> getEnclosingClass() {
return enclosingClass;
}
public TestCase createTest()
throws InvocationTargetException, IllegalAccessException, InstantiationException {
return instantiateTest(enclosingClass, testMethodName);
}
@SuppressWarnings("unchecked")
private TestCase instantiateTest(Class testCaseClass, String testName)
throws InvocationTargetException, IllegalAccessException, InstantiationException {
Constructor[] constructors = testCaseClass.getConstructors();
if (constructors.length == 0) {
return instantiateTest(testCaseClass.getSuperclass(), testName);
} else {
for (Constructor constructor : constructors) {
Class[] params = constructor.getParameterTypes();
if (noargsConstructor(params)) {
TestCase test = ((Constructor<? extends TestCase>) constructor).newInstance();
// JUnit will run just the one test if you call
// {@link TestCase#setName(String)}
test.setName(testName);
return test;
} else if (singleStringConstructor(params)) {
return ((Constructor<? extends TestCase>) constructor)
.newInstance(testName);
}
}
}
throw new RuntimeException("Unable to locate a constructor for "
+ testCaseClass.getName());
}
private boolean singleStringConstructor(Class[] params) {
return (params.length == 1) && (params[0].equals(String.class));
}
private boolean noargsConstructor(Class[] params) {
return params.length == 0;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
TestMethod that = (TestMethod) o;
if (enclosingClassname != null
? !enclosingClassname.equals(that.enclosingClassname)
: that.enclosingClassname != null) {
return false;
}
if (testMethodName != null
? !testMethodName.equals(that.testMethodName)
: that.testMethodName != null) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result;
result = (enclosingClassname != null ? enclosingClassname.hashCode() : 0);
result = 31 * result + (testMethodName != null ? testMethodName.hashCode() : 0);
return result;
}
@Override
public String toString() {
return enclosingClassname + "." + testMethodName;
}
}
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