CHEF-2571: support negated bool parameters

Using --[no-]xxx on a boolean parameter lets the
user specify the value as false, like in
OptionParser.

1 files changed, 9 insertions, 2 deletions

diff --git a/spec/mixlib/cli_spec.rb b/spec/mixlib/cli_spec.rb
index 05c6491..aaa2d3a 100644
--- a/spec/mixlib/cli_spec.rb
+++ b/spec/mixlib/cli_spec.rb
@@ -156,18 +156,25 @@ describe Mixlib::CLI do
         @cli.config[:i_am_boolean].should == true
       end
       
+      it "should set the corresponding config value to false when a boolean is prefixed with --no" do
+        TestCLI.option(:i_am_boolean, :long => "--[no-]bool", :boolean => true)
+        @cli = TestCLI.new
+        @cli.parse_options([ '--no-bool' ])
+        @cli.config[:i_am_boolean].should == false
+      end
+
       it "should exit if a config option has :exit set" do
         TestCLI.option(:i_am_exit, :short => "-x", :boolean => true, :exit => 0)
         @cli = TestCLI.new
         lambda { @cli.parse_options(["-x"]) }.should raise_error(SystemExit)
       end
-      
+
       it "should exit if a required option is missing" do
         TestCLI.option(:require_me, :short => "-r", :boolean => true, :required => true)
         @cli = TestCLI.new
         lambda { @cli.parse_options([]) }.should raise_error(SystemExit)
       end
-      
+
       it "should preserve all of the commandline arguments, ARGV" do
         TestCLI.option(:config_file, :short => "-c CONFIG")
         @cli = TestCLI.new