static Optional create()

in junit-platform-launcher/src/main/java/org/junit/platform/launcher/core/StreamInterceptingTestExecutionListener.java [41:64]

• 20 lines of code
• 9 McCabe index (conditional complexity)

	static Optional<StreamInterceptingTestExecutionListener> create(ConfigurationParameters configurationParameters,
			BiConsumer<TestIdentifier, ReportEntry> reporter) {

		boolean captureStdout = configurationParameters.getBoolean(CAPTURE_STDOUT_PROPERTY_NAME).orElse(false);
		boolean captureStderr = configurationParameters.getBoolean(CAPTURE_STDERR_PROPERTY_NAME).orElse(false);
		if (!captureStdout && !captureStderr) {
			return Optional.empty();
		}

		int maxSize = configurationParameters.get(CAPTURE_MAX_BUFFER_PROPERTY_NAME, Integer::valueOf) //
				.orElse(CAPTURE_MAX_BUFFER_DEFAULT);

		Optional<StreamInterceptor> stdoutInterceptor = captureStdout ? StreamInterceptor.registerStdout(maxSize)
				: Optional.empty();
		Optional<StreamInterceptor> stderrInterceptor = captureStderr ? StreamInterceptor.registerStderr(maxSize)
				: Optional.empty();

		if ((!stdoutInterceptor.isPresent() && captureStdout) || (!stderrInterceptor.isPresent() && captureStderr)) {
			stdoutInterceptor.ifPresent(StreamInterceptor::unregister);
			stderrInterceptor.ifPresent(StreamInterceptor::unregister);
			return Optional.empty();
		}
		return Optional.of(new StreamInterceptingTestExecutionListener(stdoutInterceptor, stderrInterceptor, reporter));
	}