Package org.junit.jupiter.params

Class ParameterizedTestExtension

java.lang.Object

org.junit.jupiter.params.ParameterizedTestExtension

All Implemented Interfaces:

Extension, TestTemplateInvocationContextProvider

class ParameterizedTestExtension
extends Object
implements TestTemplateInvocationContextProvider

Since:

5.0

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final String	ARGUMENT_MAX_LENGTH_KEY
private static final String	METHOD_CONTEXT_KEY

Constructor Summary

Constructors

Constructor	Description
ParameterizedTestExtension()

Method Summary

Modifier and Type	Method	Description
protected static Stream<? extends Arguments>	arguments(ArgumentsProvider provider, ExtensionContext context)
private Object[]	consumedArguments(Object[] arguments, ParameterizedTestMethodContext methodContext)
private TestTemplateInvocationContext	createInvocationContext(ParameterizedTestNameFormatter formatter, ParameterizedTestMethodContext methodContext, Object[] arguments)
private ParameterizedTestNameFormatter	createNameFormatter(Method templateMethod, ParameterizedTestMethodContext methodContext, String displayName, int argumentMaxLength)
private ExtensionContext.Store	getStore(ExtensionContext context)
private ArgumentsProvider	instantiateArgumentsProvider(Class<? extends ArgumentsProvider> clazz)
Stream<TestTemplateInvocationContext>	provideTestTemplateInvocationContexts(ExtensionContext extensionContext)	Provide invocation contexts for the test template method represented by the supplied context.
boolean	supportsTestTemplate(ExtensionContext context)	Determine if this provider supports providing invocation contexts for the test template method represented by the supplied context.

Methods inherited from class java.lang.Object

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

Field Details

METHOD_CONTEXT_KEY

private static final String METHOD_CONTEXT_KEY

See Also:

• Constant Field Values

ARGUMENT_MAX_LENGTH_KEY

static final String ARGUMENT_MAX_LENGTH_KEY

See Also:

• Constant Field Values

Constructor Details

ParameterizedTestExtension

ParameterizedTestExtension()

Method Details

supportsTestTemplate

public boolean supportsTestTemplate(ExtensionContext context)

Description copied from interface: TestTemplateInvocationContextProvider

Determine if this provider supports providing invocation contexts for the test template method represented by the supplied context.

Specified by:

supportsTestTemplate in interface TestTemplateInvocationContextProvider

Parameters:

context - the extension context for the test template method about to be invoked; never null

Returns:

true if this provider can provide invocation contexts

See Also:

• TestTemplateInvocationContextProvider.provideTestTemplateInvocationContexts(org.junit.jupiter.api.extension.ExtensionContext)
• ExtensionContext

provideTestTemplateInvocationContexts

public Stream<TestTemplateInvocationContext> provideTestTemplateInvocationContexts(ExtensionContext extensionContext)

Description copied from interface: TestTemplateInvocationContextProvider

Provide invocation contexts for the test template method represented by the supplied context.

This method is only called by the framework if TestTemplateInvocationContextProvider.supportsTestTemplate(org.junit.jupiter.api.extension.ExtensionContext) previously returned true for the same ExtensionContext; this method is allowed to return an empty Stream but not null.

The returned Stream will be properly closed by calling BaseStream.close(), making it safe to use a resource such as Files.lines().

Specified by:

provideTestTemplateInvocationContexts in interface TestTemplateInvocationContextProvider

Parameters:

extensionContext - the extension context for the test template method about to be invoked; never null

Returns:

a Stream of TestTemplateInvocationContext instances for the invocation of the test template method; never null

See Also:

• TestTemplateInvocationContextProvider.supportsTestTemplate(org.junit.jupiter.api.extension.ExtensionContext)
• ExtensionContext

instantiateArgumentsProvider

private ArgumentsProvider instantiateArgumentsProvider(Class<? extends ArgumentsProvider> clazz)

getStore

private ExtensionContext.Store getStore(ExtensionContext context)

createInvocationContext

private TestTemplateInvocationContext createInvocationContext(ParameterizedTestNameFormatter formatter,
 ParameterizedTestMethodContext methodContext,
 Object[] arguments)

createNameFormatter

private ParameterizedTestNameFormatter createNameFormatter(Method templateMethod,
 ParameterizedTestMethodContext methodContext,
 String displayName,
 int argumentMaxLength)

arguments

protected static Stream<? extends Arguments> arguments(ArgumentsProvider provider,
 ExtensionContext context)

consumedArguments

private Object[] consumedArguments(Object[] arguments,
 ParameterizedTestMethodContext methodContext)