Package org.junitpioneer.internal

Class PioneerUtils

java.lang.Object

org.junitpioneer.internal.PioneerUtils

public class PioneerUtils
extends Object

Pioneer-internal utility class. DO NOT USE THIS CLASS - IT MAY CHANGE SIGNIFICANTLY IN ANY MINOR UPDATE.

See Also:

• PioneerAnnotationUtils

Method Summary

Modifier and Type	Method	Description
static List<List<?>>	cartesianProduct(List<List<?>> lists)
static <T> Collector<T,Set<T>,Set<T>>	distinctToSet()	A toSet collector that throws an IllegalStateException on duplicate elements (according to equals).
static List<ExtensionContext>	findAllContexts(ExtensionContext context)	Find all (parent) ExtensionContexts via ExtensionContext.getParent().
static Optional<Method>	findMethodCurrentOrEnclosing(Class<?> clazz, String methodName, Class<?>... parameterTypes)	Find the first Method of the supplied class or interface that meets the specified criteria, beginning with the specified class or interface and traversing its enclosing classes until such a method is found or the top level class is reached.
static String	nullSafeToString(Object object)
static <T> Class<T>	wrap(Class<T> clazz)	Replaces all primitive types with the appropriate wrapper types.

Methods inherited from class java.lang.Object

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

Method Details

distinctToSet

public static <T> Collector<T,Set<T>,Set<T>> distinctToSet()

A toSet collector that throws an IllegalStateException on duplicate elements (according to equals).

findMethodCurrentOrEnclosing

public static Optional<Method> findMethodCurrentOrEnclosing(Class<?> clazz,
 String methodName,
 Class<?>... parameterTypes)

Find the first Method of the supplied class or interface that meets the specified criteria, beginning with the specified class or interface and traversing its enclosing classes until such a method is found or the top level class is reached.

The algorithm does not search for methods in Object.

Parameters:

clazz - the class or interface in which to find the method; never null

methodName - the name of the method to find; never null or empty

parameterTypes - the types of parameters accepted by the method, if any; never null

Returns:

an Optional containing the method found; never null but potentially empty if no such method could be found

See Also:

• ReflectionSupport.findMethod(Class, String, Class...)

findAllContexts

public static List<ExtensionContext> findAllContexts(ExtensionContext context)

Find all (parent) ExtensionContexts via ExtensionContext.getParent().

Parameters:

context - the context for which to find all (parent) contexts; never null

Returns:

a list of all contexts, "outwards" in the getParent-order, beginning with the given context; never null or empty

nullSafeToString

public static String nullSafeToString(Object object)

wrap

public static <T> Class<T> wrap(Class<T> clazz)

Replaces all primitive types with the appropriate wrapper types. Returns the passed argument if it's not a primitive according to Class.isPrimitive().

Returns:

the wrapped class of the primitive type, or the passed class

See Also:

• MethodType.wrap()

cartesianProduct

public static List<List<?>> cartesianProduct(List<List<?>> lists)