Module org.junit.jupiter.params

Package org.junit.jupiter.params.provider

Class MethodArgumentsProvider

java.lang.Object

org.junit.jupiter.params.provider.AnnotationBasedArgumentsProvider<MethodSource>

org.junit.jupiter.params.provider.MethodArgumentsProvider

All Implemented Interfaces:

Consumer<MethodSource>, ArgumentsProvider, AnnotationConsumer<MethodSource>

class MethodArgumentsProvider
extends AnnotationBasedArgumentsProvider<MethodSource>

Since:

5.0

Field Summary

Fields

Modifier and Type	Field	Description
private static final Predicate<Method>	isFactoryMethod

Constructor Summary

Constructors

Constructor	Description
MethodArgumentsProvider()

Method Summary

Modifier and Type	Method	Description
private static Method	findFactoryMethod(Class<?> testClass, Method testMethod, String factoryMethodName)
(package private) static Method	findFactoryMethodByFullyQualifiedName(Class<?> testClass, Method testMethod, String fullyQualifiedMethodName)
private static Method	findFactoryMethodBySimpleName(Class<?> clazz, Method testMethod, String factoryMethodName)	Find the factory method by searching for all methods in the given clazz with the desired factoryMethodName which have return types that can be converted to a Stream, ignoring the testMethod itself as well as any @Test, @TestTemplate, or @TestFactory methods with the same name.
private static boolean	isTestMethod(Method candidate)
private static Class<?>	loadRequiredClass(String className, ClassLoader classLoader)
private static boolean	looksLikeAFullyQualifiedMethodName(String factoryMethodName)
protected Stream<? extends Arguments>	provideArguments(ExtensionContext context, MethodSource methodSource)	Provide a Stream of Arguments — based on metadata in the provided annotation — to be passed to a @ParameterizedTest method.
private static Arguments	toArguments(Object item)
private static Method	validateFactoryMethod(Method factoryMethod, Object testInstance)

Methods inherited from class org.junit.jupiter.params.provider.AnnotationBasedArgumentsProvider

accept, provideArguments

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Consumer

andThen

Field Details

isFactoryMethod

private static final Predicate<Method> isFactoryMethod

Constructor Details

MethodArgumentsProvider

MethodArgumentsProvider()

Method Details

provideArguments

protected Stream<? extends Arguments> provideArguments(ExtensionContext context,
 MethodSource methodSource)

Description copied from class: AnnotationBasedArgumentsProvider

Provide a Stream of Arguments — based on metadata in the provided annotation — to be passed to a @ParameterizedTest method.

Specified by:

provideArguments in class AnnotationBasedArgumentsProvider<MethodSource>

Parameters:

context - the current extension context; never null

methodSource - the annotation to process; never null

Returns:

a stream of arguments; never null

findFactoryMethod

private static Method findFactoryMethod(Class<?> testClass,
 Method testMethod,
 String factoryMethodName)

looksLikeAFullyQualifiedMethodName

private static boolean looksLikeAFullyQualifiedMethodName(String factoryMethodName)

findFactoryMethodByFullyQualifiedName

static Method findFactoryMethodByFullyQualifiedName(Class<?> testClass,
 Method testMethod,
 String fullyQualifiedMethodName)

findFactoryMethodBySimpleName

private static Method findFactoryMethodBySimpleName(Class<?> clazz,
 Method testMethod,
 String factoryMethodName)

Find the factory method by searching for all methods in the given clazz with the desired factoryMethodName which have return types that can be converted to a Stream, ignoring the testMethod itself as well as any @Test, @TestTemplate, or @TestFactory methods with the same name.

Returns:

the single factory method matching the search criteria

Throws:

PreconditionViolationException - if the factory method was not found or multiple competing factory methods with the same name were found

isTestMethod

private static boolean isTestMethod(Method candidate)

loadRequiredClass

private static Class<?> loadRequiredClass(String className,
 ClassLoader classLoader)

validateFactoryMethod

private static Method validateFactoryMethod(Method factoryMethod,
 Object testInstance)

toArguments

private static Arguments toArguments(Object item)