public Stream provideTestTemplateInvocationContexts()

in junit-jupiter-params/src/main/java/org/junit/jupiter/params/ParameterizedTestExtension.java [69:97]

• 25 lines of code
• 1 McCabe index (conditional complexity)

	public Stream<TestTemplateInvocationContext> provideTestTemplateInvocationContexts(
			ExtensionContext extensionContext) {

		Method templateMethod = extensionContext.getRequiredTestMethod();
		String displayName = extensionContext.getDisplayName();
		ParameterizedTestMethodContext methodContext = getStore(extensionContext)//
				.get(METHOD_CONTEXT_KEY, ParameterizedTestMethodContext.class);
		int argumentMaxLength = extensionContext.getConfigurationParameter(ARGUMENT_MAX_LENGTH_KEY,
			Integer::parseInt).orElse(512);
		ParameterizedTestNameFormatter formatter = createNameFormatter(templateMethod, methodContext, displayName,
			argumentMaxLength);
		AtomicLong invocationCount = new AtomicLong(0);

		// @formatter:off
		return findRepeatableAnnotations(templateMethod, ArgumentsSource.class)
				.stream()
				.map(ArgumentsSource::value)
				.map(this::instantiateArgumentsProvider)
				.map(provider -> AnnotationConsumerInitializer.initialize(templateMethod, provider))
				.flatMap(provider -> arguments(provider, extensionContext))
				.map(Arguments::get)
				.map(arguments -> consumedArguments(arguments, methodContext))
				.map(arguments -> createInvocationContext(formatter, methodContext, arguments))
				.peek(invocationContext -> invocationCount.incrementAndGet())
				.onClose(() ->
						Preconditions.condition(invocationCount.get() > 0,
								"Configuration error: You must configure at least one set of arguments for this @ParameterizedTest"));
		// @formatter:on
	}