require 'helper' require 'thor/parser' describe Thor::Argument do def argument(name, options={}) @argument ||= Thor::Argument.new(name, options) end describe "errors" do it "raises an error if name is not supplied" do expect { argument(nil) }.to raise_error(ArgumentError, "Argument name can't be nil.") end it "raises an error if type is unknown" do expect { argument(:command, :type => :unknown) }.to raise_error(ArgumentError, "Type :unknown is not valid for arguments.") end it "raises an error if argument is required and has default values" do expect { argument(:command, :type => :string, :default => "bar", :required => true) }.to raise_error(ArgumentError, "An argument cannot be required and have default value.") end it "raises an error if enum isn't an array" do expect { argument(:command, :type => :string, :enum => "bar") }.to raise_error(ArgumentError, "An argument cannot have an enum other than an array.") end end describe "#usage" do it "returns usage for string types" do expect(argument(:foo, :type => :string).usage).to eq("FOO") end it "returns usage for numeric types" do expect(argument(:foo, :type => :numeric).usage).to eq("N") end it "returns usage for array types" do expect(argument(:foo, :type => :array).usage).to eq("one two three") end it "returns usage for hash types" do expect(argument(:foo, :type => :hash).usage).to eq("key:value") end end end