test/SourceKit/Misc/wrong_arguments.swift - third_party/swift - Git at Google

 // Check that from invalid input, program suggests using -help

 // RUN: not %sourcekitd-test -this_option_does_not_exist 2>&1 | %FileCheck %s

 // CHECK: error: unknown argument: -this_option_does_not_exist
 // CHECK: Use -h or -help for assistance
	// Check that from invalid input, program suggests using -help

	// RUN: not %sourcekitd-test -this_option_does_not_exist 2>&1 \| %FileCheck %s

	// CHECK: error: unknown argument: -this_option_does_not_exist
	// CHECK: Use -h or -help for assistance