org.junit.jupiter.api.extension

Interface TestInstancePreConstructCallback

All Superinterfaces:

Extension

Functional Interface:

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

@FunctionalInterface
 @API(status=EXPERIMENTAL,
     since="5.9")
public interface TestInstancePreConstructCallback
extends Extension

TestInstancePreConstructCallback defines the API for Extensions that wish to be invoked prior to creation of test instances.

This extension is a symmetric counterpart to TestInstancePreDestroyCallback. The use cases for this extension may include preparing context-sensitive arguments that are injected into the instance's constructor.

Extensions that implement TestInstancePreConstructCallback must be registered at the class level if the test class is configured with @TestInstance(Lifecycle.PER_CLASS) semantics. If the test class is configured with @TestInstance(Lifecycle.PER_METHOD) semantics, TestInstancePreConstructCallback extensions may be registered at the class level or at the method level. In the latter case, the extension will only be applied to the test method for which it is registered.

Constructor Requirements

Consult the documentation in Extension for details on constructor requirements.

Since:

5.9

See Also:

TestInstancePreDestroyCallback, TestInstanceFactory, ParameterResolver

Method Summary

Modifier and Type	Method and Description
void	preConstructTestInstance(TestInstanceFactoryContext factoryContext, ExtensionContext context) Callback invoked prior to test instances being constructed.

Method Detail

preConstructTestInstance

void preConstructTestInstance(TestInstanceFactoryContext factoryContext,
                              ExtensionContext context)
                       throws java.lang.Exception

Callback invoked prior to test instances being constructed.

Parameters:

factoryContext - the context for the test instance about to be instantiated; never null

context - the current extension context; never null

Throws:

java.lang.Exception