From c3b64a86bcd7773c081f5049115c57ec73d7a76a Mon Sep 17 00:00:00 2001 From: Yusuke Endoh Date: Wed, 16 Oct 2019 16:31:41 +0900 Subject: lib/optparse.rb: Show a did_you_mean hint for unknown option ``` require 'optparse' OptionParser.new do |opts| opts.on("-f", "--foo", "foo") {|v| } opts.on("-b", "--bar", "bar") {|v| } opts.on("-c", "--baz", "baz") {|v| } end.parse! ``` ``` $ ruby test.rb --baa Traceback (most recent call last): test.rb:7:in `
': invalid option: --baa (OptionParser::InvalidOption) Did you mean? baz bar ``` --- test/optparse/test_did_you_mean.rb | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 test/optparse/test_did_you_mean.rb (limited to 'test/optparse') diff --git a/test/optparse/test_did_you_mean.rb b/test/optparse/test_did_you_mean.rb new file mode 100644 index 0000000000..4d8e272e6b --- /dev/null +++ b/test/optparse/test_did_you_mean.rb @@ -0,0 +1,22 @@ +# frozen_string_literal: false +require_relative 'test_optparse' +require "did_you_mean" rescue return + +class TestOptionParser::DidYouMean < TestOptionParser + def setup + super + @opt.def_option("--foo", Integer) { |v| @foo = v } + @opt.def_option("--bar", Integer) { |v| @bar = v } + @opt.def_option("--baz", Integer) { |v| @baz = v } + end + + def test_did_you_mean + assert_raise(OptionParser::InvalidOption) do + begin + @opt.permute!(%w"--baa") + ensure + assert_equal("invalid option: --baa\nDid you mean? baz\n bar", $!.message) + end + end + end +end -- cgit v1.2.3