org.junit.gen5.api.extension

Interface MethodParameterResolver

All Superinterfaces:

Extension, ExtensionPoint

@API(value=Experimental)
public interface MethodParameterResolver
extends ExtensionPoint

MethodParameterResolver defines the API for Extensions that wish to dynamically resolve method parameters at runtime.

If a @Test, @BeforeEach, @AfterEach, @BeforeAll, or @AfterAll method accepts a parameter, the parameter must be resolved at runtime by a MethodParameterResolver.

Implementations must provide a no-args constructor.

Since:

5.0

Method Summary

Modifier and Type	Method and Description
java.lang.Object	resolve(java.lang.reflect.Parameter parameter, MethodInvocationContext methodInvocationContext, ExtensionContext extensionContext) Resolve the given Parameter for the supplied MethodInvocationContext and ExtensionContext.
boolean	supports(java.lang.reflect.Parameter parameter, MethodInvocationContext methodInvocationContext, ExtensionContext extensionContext) Determine if this resolver supports resolution of the given Parameter for the supplied MethodInvocationContext and ExtensionContext.

Method Detail

supports

boolean supports(java.lang.reflect.Parameter parameter,
                 MethodInvocationContext methodInvocationContext,
                 ExtensionContext extensionContext)
          throws ParameterResolutionException

Determine if this resolver supports resolution of the given Parameter for the supplied MethodInvocationContext and ExtensionContext.

Parameters:

parameter - parameter to be resolved

methodInvocationContext - method invocation context for the parameter

extensionContext - extension context of the method about to be invoked

Returns:

true if this resolver can resolve the parameter

Throws:

ParameterResolutionException

See Also:

resolve(java.lang.reflect.Parameter, org.junit.gen5.api.extension.MethodInvocationContext, org.junit.gen5.api.extension.ExtensionContext)

resolve

java.lang.Object resolve(java.lang.reflect.Parameter parameter,
                         MethodInvocationContext methodInvocationContext,
                         ExtensionContext extensionContext)
                  throws ParameterResolutionException

Resolve the given Parameter for the supplied MethodInvocationContext and ExtensionContext.

Parameters:

parameter - parameter to be resolved

methodInvocationContext - method invocation context for the parameter

extensionContext - extension context of the method about to be invoked

Returns:

the resolved parameter object

Throws:

ParameterResolutionException

See Also:

supports(java.lang.reflect.Parameter, org.junit.gen5.api.extension.MethodInvocationContext, org.junit.gen5.api.extension.ExtensionContext)