Interface ParameterInfo

@API(status=EXPERIMENTAL,
     since="6.0")
public interface ParameterInfo

ParameterInfo is used to provide information about the current invocation of a parameterized class or test.

Registered Extension implementations may retrieve the current ParameterInfo instance by calling ExtensionContext.getStore(Namespace) with NAMESPACE and Store.get(...) with KEY. Alternatively, the get(ExtensionContext) method may be used to retrieve the ParameterInfo instance for the supplied ExtensionContext. Extensions must not modify any entries in the Store for NAMESPACE.

When a @ParameterizedTest method is declared inside a @ParameterizedClass or a @Nested @ParameterizedClass is declared inside an enclosing @ParameterizedClass, there will be multiple ParameterInfo instances available on different levels of the ExtensionContext hierarchy. In such cases, please use ExtensionContext.getParent() to navigate to the right level before retrieving the ParameterInfo instance from the Store.

Since:

5.13

See Also:

• ParameterizedClass
• ParameterizedTest

Field Summary

Fields

Modifier and Type	Field	Description
static final Object	KEY	The key for retrieving the ParameterInfo instance from the Store.
static final ExtensionContext.Namespace	NAMESPACE	The ExtensionContext.Namespace for accessing the Store for ParameterInfo.

Method Summary

Modifier and Type	Method	Description
static @Nullable ParameterInfo	get(ExtensionContext context)	Returns the closest ParameterInfo instance for the supplied ExtensionContext; potentially null.
ArgumentsAccessor	getArguments()	Returns the accessor to the arguments of the current invocation.
ParameterDeclarations	getDeclarations()	Returns the declarations of all indexed parameters.

Field Details

NAMESPACE

static final ExtensionContext.Namespace NAMESPACE

The ExtensionContext.Namespace for accessing the Store for ParameterInfo.

KEY

static final Object KEY

The key for retrieving the ParameterInfo instance from the Store.

Method Details

get

static @Nullable ParameterInfo get(ExtensionContext context)

Returns the closest ParameterInfo instance for the supplied ExtensionContext; potentially null.

Returns:

the closest ParameterInfo instance for the supplied ExtensionContext; potentially null

getDeclarations

ParameterDeclarations getDeclarations()

Returns the declarations of all indexed parameters.

Returns:

the declarations of all indexed parameters

getArguments

ArgumentsAccessor getArguments()

Returns the accessor to the arguments of the current invocation.

Returns:

the accessor to the arguments of the current invocation