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package junitparams.internal;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.Description;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.TestClass;
import junitparams.internal.annotation.FrameworkMethodAnnotations;
import junitparams.internal.parameters.ParametersReader;
import junitparams.naming.MacroSubstitutionNamingStrategy;
import junitparams.naming.TestCaseNamingStrategy;
/**
* A wrapper for a test method
*
* @author Pawel Lipinski
*/
public class TestMethod {
private FrameworkMethod frameworkMethod;
private FrameworkMethodAnnotations frameworkMethodAnnotations;
private Class<?> testClass;
private ParametersReader parametersReader;
private Object[] cachedParameters;
private TestCaseNamingStrategy namingStrategy;
private DescribableFrameworkMethod describableFrameworkMethod;
public TestMethod(FrameworkMethod method, TestClass testClass) {
this.frameworkMethod = method;
this.testClass = testClass.getJavaClass();
frameworkMethodAnnotations = new FrameworkMethodAnnotations(method);
parametersReader = new ParametersReader(testClass(), frameworkMethod);
namingStrategy = new MacroSubstitutionNamingStrategy(this);
}
public String name() {
return frameworkMethod.getName();
}
public static List<FrameworkMethod> listFrom(TestClass testClass) {
List<FrameworkMethod> methods = new ArrayList<FrameworkMethod>();
for (FrameworkMethod frameworkMethod : testClass.getAnnotatedMethods(Test.class)) {
TestMethod testMethod = new TestMethod(frameworkMethod, testClass);
methods.add(testMethod.describableFrameworkMethod());
}
return methods;
}
@Override
public int hashCode() {
return frameworkMethod.hashCode();
}
@Override
public boolean equals(Object obj) {
return (obj instanceof TestMethod)
&& hasTheSameNameAsFrameworkMethod((TestMethod) obj)
&& hasTheSameParameterTypesAsFrameworkMethod((TestMethod) obj);
}
private boolean hasTheSameNameAsFrameworkMethod(TestMethod testMethod) {
return frameworkMethod.getName().equals(testMethod.frameworkMethod.getName());
}
private boolean hasTheSameParameterTypesAsFrameworkMethod(TestMethod testMethod) {
Class<?>[] frameworkMethodParameterTypes = frameworkMethod.getMethod().getParameterTypes();
Class<?>[] testMethodParameterTypes = testMethod.frameworkMethod.getMethod().getParameterTypes();
return Arrays.equals(frameworkMethodParameterTypes, testMethodParameterTypes);
}
private Class<?> testClass() {
return testClass;
}
private boolean isIgnored() {
return hasIgnoredAnnotation() || hasNoParameters();
}
private boolean hasIgnoredAnnotation() {
return frameworkMethodAnnotations.hasAnnotation(Ignore.class);
}
private boolean hasNoParameters() {
return isParameterised() && parametersSets().length == 0;
}
private boolean isNotIgnored() {
return !isIgnored();
}
public <T extends Annotation> T getAnnotation(Class<T> annotationType) {
return frameworkMethodAnnotations.getAnnotation(annotationType);
}
private Description getDescription(Object[] params, int i) {
Object paramSet = params[i];
String name = namingStrategy.getTestCaseName(i, paramSet);
String uniqueMethodId = Utils.uniqueMethodId(i, paramSet, name());
return Description.createTestDescription(testClass().getName(), name, uniqueMethodId);
}
DescribableFrameworkMethod describableFrameworkMethod() {
if (describableFrameworkMethod == null) {
Description baseDescription = Description.createTestDescription(
testClass, name(), frameworkMethodAnnotations.allAnnotations());
Method method = frameworkMethod.getMethod();
try {
describableFrameworkMethod =
createDescribableFrameworkMethod(method, baseDescription);
} catch (IllegalStateException e) {
// Defer error until running.
describableFrameworkMethod =
new DeferredErrorFrameworkMethod(method, baseDescription, e);
}
}
return describableFrameworkMethod;
}
private DescribableFrameworkMethod createDescribableFrameworkMethod(Method method, Description baseDescription) {
if (isParameterised()) {
if (isNotIgnored()) {
Object[] parametersSets = parametersSets();
List<InstanceFrameworkMethod> methods
= new ArrayList<InstanceFrameworkMethod>();
for (int i = 0; i < parametersSets.length; i++) {
Object parametersSet = parametersSets[i];
Description description = getDescription(parametersSets, i);
methods.add(new InstanceFrameworkMethod(
method, baseDescription.childlessCopy(),
description, parametersSet));
}
return new ParameterisedFrameworkMethod(method, baseDescription, methods);
}
warnIfNoParamsGiven();
} else {
verifyMethodCanBeRunByStandardRunner(frameworkMethod);
}
// The method to use if it was ignored or was parameterized but had no parameters.
return new NonParameterisedFrameworkMethod(method, baseDescription, isIgnored());
}
private void verifyMethodCanBeRunByStandardRunner(FrameworkMethod method) {
List<Throwable> errors = new ArrayList<Throwable>();
method.validatePublicVoidNoArg(false, errors);
if (!errors.isEmpty()) {
throw new RuntimeException(errors.get(0));
}
}
public Object[] parametersSets() {
if (cachedParameters == null) {
cachedParameters = parametersReader.read();
}
return cachedParameters;
}
private void warnIfNoParamsGiven() {
if (isNotIgnored() && isParameterised() && parametersSets().length == 0)
System.err.println("Method " + name() + " gets empty list of parameters, so it's being ignored!");
}
public FrameworkMethod frameworkMethod() {
return frameworkMethod;
}
boolean isParameterised() {
return frameworkMethodAnnotations.isParametrised();
}
}
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