require File.expand_path(File.dirname(__FILE__) + '/../spec_helper') require 'thor/parser' describe Thor::Argument do def argument(name, type=:string, default=nil, required=nil) @argument ||= Thor::Argument.new(name, nil, required || default.nil?, type, default) end describe "errors" do it "raises an error if name is not supplied" do lambda { argument(nil) }.should raise_error(ArgumentError, "Argument name can't be nil.") end it "raises an error if type is unknown" do lambda { argument(:task, :unknown) }.should raise_error(ArgumentError, "Type :unknown is not valid for arguments.") end it "raises an error if argument is required and have default values" do lambda { argument(:task, :string, "bar", true) }.should raise_error(ArgumentError, "An argument cannot be required and have default value.") end end describe "#usage" do it "returns usage for string types" do argument(:foo, :string).usage.should == "FOO" end it "returns usage for numeric types" do argument(:foo, :numeric).usage.should == "N" end it "returns usage for array types" do argument(:foo, :array).usage.should == "one two three" end it "returns usage for hash types" do argument(:foo, :hash).usage.should == "key:value" end end end