net.jqwik.api.lifecycle

Interface ProvidePropertyInstanceHook

All Superinterfaces:

LifecycleHook

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@API(status=EXPERIMENTAL,
     since="1.6.0")
 @FunctionalInterface
public interface ProvidePropertyInstanceHook
extends LifecycleHook

Implement this hook to override behaviour that provides the test instance for each property try. Per default the only accessible constructor of the container class is invoked, with all parameters being resolved through applicable ResolveParameterHook hooks.

This hook can only be used in simple cases, since parameter resolution is currently unavailable to implementors.

Caveat: Only one hook per property method is possible.

Field Summary

Fields

Modifier and Type	Field and Description
static ProvidePropertyInstanceHook	DEFAULT

Method Summary

Modifier and Type	Method and Description
java.lang.Object	provide(java.lang.Class<?> containerClass) Create the test instance for running a property or example.

Methods inherited from interface net.jqwik.api.lifecycle.LifecycleHook

appliesTo, propagateTo

Field Detail

DEFAULT

static final ProvidePropertyInstanceHook DEFAULT

Method Detail

provide

java.lang.Object provide(java.lang.Class<?> containerClass)
                  throws java.lang.Throwable

Create the test instance for running a property or example. You may want to override the default call if provision does something else than plain instance creation from class.

This method will be called exactly once per property. All tries share the same instance!

Parameters:

containerClass - The container class which runs the test

Returns:

an object that must be assignable to containerClass

Throws:

java.lang.Throwable