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org.testng.internal.Parameters Maven / Gradle / Ivy
package org.testng.internal;
import com.google.inject.Injector;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.*;
import java.util.concurrent.Callable;
import org.testng.ITestClass;
import org.testng.ITestContext;
import org.testng.ITestNGMethod;
import org.testng.ITestResult;
import org.testng.TestNGException;
import org.testng.annotations.IConfigurationAnnotation;
import org.testng.annotations.IDataProviderAnnotation;
import org.testng.annotations.IParameterizable;
import org.testng.annotations.IParametersAnnotation;
import org.testng.annotations.ITestAnnotation;
import org.testng.collections.Lists;
import org.testng.collections.Maps;
import org.testng.internal.ParameterHolder.ParameterOrigin;
import org.testng.internal.annotations.AnnotationHelper;
import org.testng.internal.annotations.IAnnotationFinder;
import org.testng.internal.annotations.IDataProvidable;
import org.testng.internal.collections.ArrayIterator;
import org.testng.util.Strings;
import org.testng.xml.XmlSuite;
import org.testng.xml.XmlTest;
import org.testng.annotations.*;
/**
* Methods that bind parameters declared in testng.xml to actual values
* used to invoke methods.
*
* @author Cedric Beust
*/
public class Parameters {
public static final String NULL_VALUE= "null";
private static Class[] annotationList = new Class[] {
BeforeSuite.class,
AfterSuite.class,
BeforeTest.class,
AfterTest.class,
BeforeClass.class,
AfterClass.class,
BeforeGroups.class,
AfterGroups.class,
BeforeMethod.class,
AfterMethod.class
};
private static Map> mapping = Maps.newHashMap();
static {
List ctxTest = Arrays.asList(new Class[] {ITestContext.class, XmlTest.class});
List mParams = Arrays.asList(new Class[] {ITestContext.class, XmlTest.class,Method.class,Object[].class});
mapping.put(BeforeSuite.class.getSimpleName(), ctxTest);
mapping.put(AfterSuite.class.getSimpleName(), ctxTest);
mapping.put(BeforeTest.class.getSimpleName(), ctxTest);
mapping.put(AfterTest.class.getSimpleName(), ctxTest);
mapping.put(BeforeGroups.class.getSimpleName(), ctxTest);
mapping.put(AfterGroups.class.getSimpleName(), ctxTest);
mapping.put(BeforeClass.class.getSimpleName(), ctxTest);
mapping.put(AfterClass.class.getSimpleName(), ctxTest);
mapping.put(BeforeMethod.class.getSimpleName(), mParams);
mapping.put(AfterMethod.class.getSimpleName(), mParams);
}
/**
* Creates the parameters needed for constructing a test class instance.
* @param finder TODO
*/
public static Object[] createInstantiationParameters(Constructor ctor,
String methodAnnotation,
IAnnotationFinder finder,
String[] parameterNames,
Map params, XmlSuite xmlSuite)
{
return createParameters(ctor.toString(), ctor.getParameterTypes(),
finder.findOptionalValues(ctor), methodAnnotation, finder, parameterNames,
new MethodParameters(params, Collections.emptyMap()),
xmlSuite);
}
/**
* Creates the parameters needed for the specified @Configuration Method.
*
* @param m the configuraton method
* @param currentTestMethod the current @Test method or null if no @Test is available (this is not
* only in case the configuration method is a @Before/@AfterMethod
* @param finder the annotation finder
*/
public static Object[] createConfigurationParameters(Method m,
Map params,
Object[] parameterValues,
@Nullable ITestNGMethod currentTestMethod,
IAnnotationFinder finder,
XmlSuite xmlSuite,
ITestContext ctx,
ITestResult testResult)
{
Method currentTestMeth= currentTestMethod != null ?
currentTestMethod.getConstructorOrMethod().getMethod() : null;
Map methodParams = currentTestMethod != null
? currentTestMethod.findMethodParameters(ctx.getCurrentXmlTest())
: Collections.emptyMap();
return createParameters(m,
new MethodParameters(params,
methodParams,
parameterValues,
currentTestMeth, ctx, testResult),
finder, xmlSuite, IConfigurationAnnotation.class, retrieveConfigAnnotation(m));
}
private static String retrieveConfigAnnotation(Method m) {
String value = "@Configuration";
for (Class annotation : annotationList) {
if (m.getAnnotation(annotation) != null) {
value = annotation.getSimpleName();
break;
}
}
return value;
}
////////////////////////////////////////////////////////
public static Object getInjectedParameter(Class c, Method method, ITestContext context,
ITestResult testResult) {
Object result = null;
if (Method.class.equals(c)) {
result = method;
}
else if (ITestContext.class.equals(c)) {
result = context;
}
else if (XmlTest.class.equals(c)) {
result = context.getCurrentXmlTest();
}
else if (ITestResult.class.equals(c)) {
result = testResult;
}
return result;
}
/**
* @return An array of parameters suitable to invoke this method, possibly
* picked from the property file
*/
private static Object[] createParameters(String methodName,
Class[] parameterTypes,
String[] optionalValues,
String methodAnnotation,
IAnnotationFinder finder,
String[] parameterNames, MethodParameters params, XmlSuite xmlSuite)
{
Object[] result = new Object[0];
if(parameterTypes.length > 0) {
List vResult = Lists.newArrayList();
checkParameterTypes(methodName, parameterTypes, methodAnnotation, parameterNames);
for(int i = 0, j = 0; i < parameterTypes.length; i++) {
Object inject = getInjectedParameter(parameterTypes[i], params.currentTestMethod,
params.context, params.testResult);
if (inject != null) {
vResult.add(inject);
}
else {
if (j < parameterNames.length) {
String p = parameterNames[j];
String value = params.xmlParameters.get(p);
if(null == value) {
// try SysEnv entries
value= System.getProperty(p);
}
if (null == value) {
if (optionalValues != null) {
value = optionalValues[i];
}
if (null == value) {
throw new TestNGException("Parameter '" + p + "' is required by "
+ methodAnnotation
+ " on method "
+ methodName
+ " but has not been marked @Optional or defined\n"
+ (xmlSuite.getFileName() != null ? "in "
+ xmlSuite.getFileName() : ""));
}
}
vResult.add(convertType(parameterTypes[i], value, p));
j++;
}
}
}
result = vResult.toArray(new Object[vResult.size()]);
}
return result;
}
private static void checkParameterTypes(String methodName,
Class[] parameterTypes, String methodAnnotation, String[] parameterNames)
{
int totalLength = parameterTypes.length;
Set injectedTypes = new HashSet() {
private static final long serialVersionUID = -5324894581793435812L;
{
add(ITestContext.class);
add(ITestResult.class);
add(XmlTest.class);
add(Method.class);
add(Object[].class);
}};
for (Class parameterType : parameterTypes) {
if (injectedTypes.contains(parameterType)) {
totalLength--;
}
}
if ( (parameterNames.length ==0) && (totalLength != 0) ) {
//parameterNames is usually populated via the @Parameters annotation, so we would need to
//apply our logic only when @Parameters annotation is not involved.
String errPrefix = "Cannot inject " + methodAnnotation + " annotated Method [" + methodName + "] with "
+ Arrays.toString(parameterTypes);
if (mapping.containsKey(methodAnnotation)) {
errPrefix = "Can inject only one of " + prettyFormat(mapping.get(methodAnnotation)) +
" into a " + methodAnnotation + " annotated " + methodName;
}
throw new TestNGException( errPrefix
+ ".\nFor more information on native dependency injection please refer to " +
"http://testng.org/doc/documentation-main.html#native-dependency-injection"
);
}
if (parameterNames.length != totalLength) {
throw new TestNGException( "Method " + methodName + " requires "
+ parameterTypes.length + " parameters but "
+ parameterNames.length
+ " were supplied in the "
+ methodAnnotation
+ " annotation.");
}
}
private static String prettyFormat(List classes) {
StringBuilder builder = new StringBuilder("<");
if (classes.size() == 1) {
builder.append(classes.get(0));
} else {
int length = classes.size();
for (int i=0; i < length - 1; i++) {
builder.append(classes.get(i).getSimpleName()).append(", ");
}
builder.append(classes.get(length-1).getSimpleName());
}
builder.append(">");
return builder.toString();
}
public static T convertType(Class type, String value, String paramName) {
try {
if (value == null || NULL_VALUE.equals(value.toLowerCase())) {
if(type.isPrimitive()) {
Utils.log("Parameters", 2, "Attempt to pass null value to primitive type parameter '" + paramName + "'");
}
return null; // null value must be used
}
if(type == String.class) {
return (T) value;
}
if (type == int.class || type == Integer.class) {
return (T) Integer.valueOf(value);
}
if (type == boolean.class || type == Boolean.class) {
return (T) Boolean.valueOf(value);
}
if (type == byte.class || type == Byte.class) {
return (T) Byte.valueOf(value);
}
if (type == char.class || type == Character.class) {
return (T) Character.valueOf(value.charAt(0));
}
if (type == double.class || type == Double.class) {
return (T) Double.valueOf(value);
}
if (type == float.class || type == Float.class) {
return (T) Float.valueOf(value);
}
if (type == long.class || type == Long.class) {
return (T) Long.valueOf(value);
}
if (type == short.class || type == Short.class) {
return (T) Short.valueOf(value);
}
if (type.isEnum()) {
return (T) Enum.valueOf((Class) type, value);
}
} catch (Exception e) {
throw new TestNGException("Conversion issue on parameter: " + paramName, e);
}
throw new TestNGException("Unsupported type parameter : " + type);
}
private static DataProviderHolder findDataProvider(Object instance, ITestClass clazz,
ConstructorOrMethod m,
IAnnotationFinder finder, ITestContext context) {
DataProviderHolder result = null;
IDataProvidable dp = findDataProviderInfo(clazz, m, finder);
if (dp != null) {
String dataProviderName = dp.getDataProvider();
Class dataProviderClass = dp.getDataProviderClass();
if (! Utils.isStringEmpty(dataProviderName)) {
result = findDataProvider(instance, clazz, finder, dataProviderName, dataProviderClass, context);
if(null == result) {
throw new TestNGException("Method " + m + " requires a @DataProvider named : "
+ dataProviderName + (dataProviderClass != null ? " in class " + dataProviderClass.getName() : "")
);
}
}
}
return result;
}
/**
* Find the data provider info (data provider name and class) on either @Test(dataProvider),
* @Factory(dataProvider) on a method or @Factory(dataProvider) on a constructor.
*/
private static IDataProvidable findDataProviderInfo(ITestClass clazz, ConstructorOrMethod m,
IAnnotationFinder finder) {
IDataProvidable result;
if (m.getMethod() != null) {
//
// @Test(dataProvider) on a method
//
result = AnnotationHelper.findTest(finder, m.getMethod());
if (result == null) {
//
// @Factory(dataProvider) on a method
//
result = AnnotationHelper.findFactory(finder, m.getMethod());
}
if (result == null) {
//
// @Test(dataProvider) on a class
result = AnnotationHelper.findTest(finder, clazz.getRealClass());
}
} else {
//
// @Factory(dataProvider) on a constructor
//
result = AnnotationHelper.findFactory(finder, m.getConstructor());
}
return result;
}
/**
* Find a method that has a @DataProvider(name=name)
*/
private static DataProviderHolder findDataProvider(Object instance, ITestClass clazz,
IAnnotationFinder finder,
String name, Class dataProviderClass,
ITestContext context)
{
DataProviderHolder result = null;
Class cls = clazz.getRealClass();
boolean shouldBeStatic = false;
if (dataProviderClass != null) {
cls = dataProviderClass;
shouldBeStatic = true;
}
for (Method m : ClassHelper.getAvailableMethods(cls)) {
IDataProviderAnnotation dp = finder.findAnnotation(m, IDataProviderAnnotation.class);
if (null != dp && name.equals(getDataProviderName(dp, m))) {
Object instanceToUse;
if (shouldBeStatic && (m.getModifiers() & Modifier.STATIC) == 0) {
Injector injector = context.getInjector(clazz);
if (injector != null) {
instanceToUse = injector.getInstance(dataProviderClass);
} else {
instanceToUse = ClassHelper.newInstance(dataProviderClass);
}
} else {
instanceToUse = instance;
}
// Not a static method but no instance exists, then create new one if possible
if ((m.getModifiers() & Modifier.STATIC) == 0 && instanceToUse == null) {
instanceToUse = ClassHelper.newInstanceOrNull(cls);
}
if (result != null) {
throw new TestNGException("Found two providers called '" + name + "' on " + cls);
}
result = new DataProviderHolder(dp, m, instanceToUse);
}
}
return result;
}
private static String getDataProviderName(IDataProviderAnnotation dp, Method m) {
return Strings.isNullOrEmpty(dp.getName()) ? m.getName() : dp.getName();
}
@SuppressWarnings({"deprecation"})
private static Object[] createParameters(Method m, MethodParameters params,
IAnnotationFinder finder, XmlSuite xmlSuite, Class annotationClass, String atName)
{
List result = Lists.newArrayList();
Object[] extraParameters;
//
// Try to find an @Parameters annotation
//
IParametersAnnotation annotation = finder.findAnnotation(m, IParametersAnnotation.class);
Class[] types = m.getParameterTypes();
if(null != annotation) {
String[] parameterNames = annotation.getValue();
extraParameters = createParameters(m.getName(), types,
finder.findOptionalValues(m), atName, finder, parameterNames, params, xmlSuite);
}
//
// Else, use the deprecated syntax
//
else {
IParameterizable a = (IParameterizable) finder.findAnnotation(m, annotationClass);
if(null != a && a.getParameters().length > 0) {
String[] parameterNames = a.getParameters();
extraParameters = createParameters(m.getName(), types,
finder.findOptionalValues(m), atName, finder, parameterNames, params, xmlSuite);
}
else {
extraParameters = createParameters(m.getName(), types,
finder.findOptionalValues(m), atName, finder, new String[0], params, xmlSuite);
}
}
//
// Add the extra parameters we found
//
Collections.addAll(result, extraParameters);
// If the method declared an Object[] parameter and we have parameter values, inject them
for (int i = 0; i < types.length; i++) {
if (Object[].class.equals(types[i])) {
result.add(i, params.parameterValues);
}
}
return result.toArray(new Object[result.size()]);
}
/**
* If the method has parameters, fill them in. Either by using a @DataProvider
* if any was provided, or by looking up in testng.xml
* @return An Iterator over the values for each parameter of this
* method.
*/
public static ParameterHolder handleParameters(ITestNGMethod testMethod,
Map allParameterNames,
Object instance,
MethodParameters methodParams,
XmlSuite xmlSuite,
IAnnotationFinder annotationFinder,
Object fedInstance)
{
/*
* Do we have a @DataProvider? If yes, then we have several
* sets of parameters for this method
*/
final DataProviderHolder dataProviderHolder =
findDataProvider(instance, testMethod.getTestClass(),
testMethod.getConstructorOrMethod(), annotationFinder, methodParams.context);
if (null != dataProviderHolder) {
int parameterCount = testMethod.getConstructorOrMethod().getParameterTypes().length;
for (int i = 0; i < parameterCount; i++) {
String n = "param" + i;
allParameterNames.put(n, n);
}
final Iterator parameters = MethodInvocationHelper.invokeDataProvider(
dataProviderHolder.instance, /* a test instance or null if the dataprovider is static*/
dataProviderHolder.method,
testMethod,
methodParams.context,
fedInstance,
annotationFinder);
// If the data provider is restricting the indices to return, filter them out
final List allIndices = new ArrayList<>();
allIndices.addAll(testMethod.getInvocationNumbers());
allIndices.addAll(dataProviderHolder.annotation.getIndices());
final Iterator filteredParameters = new Iterator() {
int index = 0;
boolean hasWarn = false;
@Override
public boolean hasNext() {
if (index == 0 && !parameters.hasNext() && !hasWarn) {
hasWarn = true;
Utils.log("", 2, "Warning: the data provider '" + dataProviderHolder.annotation.getName() + "' returned an empty array or iterator, so this test is not doing anything");
}
return parameters.hasNext();
}
@Override
public Object[] next() {
Object[] next = parameters.next();
if (!allIndices.isEmpty() && !allIndices.contains(index)) {
next = null;
}
index++;
return next;
}
@Override
public void remove() {
throw new UnsupportedOperationException("remove");
}
};
testMethod.setMoreInvocationChecker(new Callable() {
@Override
public Boolean call() throws Exception {
return filteredParameters.hasNext();
}
});
return new ParameterHolder(filteredParameters, ParameterOrigin.ORIGIN_DATA_PROVIDER,
dataProviderHolder);
}
else {
//
// Normal case: we have only one set of parameters coming from testng.xml
//
allParameterNames.putAll(methodParams.xmlParameters);
// Create an Object[][] containing just one row of parameters
Object[][] allParameterValuesArray = new Object[1][];
allParameterValuesArray[0] = createParameters(testMethod.getConstructorOrMethod().getMethod(),
methodParams, annotationFinder, xmlSuite, ITestAnnotation.class, "@Test");
// Mark that this method needs to have at least a certain
// number of invocations (needed later to call AfterGroups
// at the right time).
testMethod.setParameterInvocationCount(allParameterValuesArray.length);
// Turn it into an Iterable
Iterator parameters = new ArrayIterator(allParameterValuesArray);
return new ParameterHolder(parameters, ParameterOrigin.ORIGIN_XML, null);
}
}
/** A parameter passing helper class. */
public static class MethodParameters {
private final Map xmlParameters;
private final Method currentTestMethod;
private final ITestContext context;
private Object[] parameterValues;
public ITestResult testResult;
public MethodParameters(Map params, Map methodParams) {
this(params, methodParams, null, null, null, null);
}
/**
* @param params parameters found in the suite and test tags
* @param methodParams parameters found in the include tag
* @param pv
* @param m
* @param ctx
* @param tr
*/
public MethodParameters(Map params,
Map methodParams,
Object[] pv, Method m, ITestContext ctx,
ITestResult tr) {
Map allParams = Maps.newHashMap();
allParams.putAll(params);
allParams.putAll(methodParams);
xmlParameters = allParams;
currentTestMethod = m;
context = ctx;
parameterValues = pv;
testResult = tr;
}
}
}
