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#! /usr/bin/env ruby
require 'spec_helper'
require 'puppet/pops'
describe Puppet::Pops::Visitor do
describe "A visitor and a visitable in a configuration with min and max args set to 0" do
class DuckProcessor
def initialize
@friend_visitor = Puppet::Pops::Visitor.new(self, "friend", 0, 0)
end
def hi(o, *args)
@friend_visitor.visit(o, *args)
end
def friend_Duck(o)
"Hi #{o.class}"
end
def friend_Numeric(o)
"Howdy #{o.class}"
end
end
class Duck
include Puppet::Pops::Visitable
end
it "should select the expected method when there are no arguments" do
duck = Duck.new
duck_processor = DuckProcessor.new
duck_processor.hi(duck).should == "Hi Duck"
end
it "should fail if there are too many arguments" do
duck = Duck.new
duck_processor = DuckProcessor.new
expect { duck_processor.hi(duck, "how are you?") }.to raise_error(/^Visitor Error: Too many.*/)
end
it "should select method for superclass" do
duck_processor = DuckProcessor.new
duck_processor.hi(42).should == "Howdy Fixnum"
end
it "should select method for superclass" do
duck_processor = DuckProcessor.new
duck_processor.hi(42.0).should == "Howdy Float"
end
it "should fail if class not handled" do
duck_processor = DuckProcessor.new
expect { duck_processor.hi("wassup?") }.to raise_error(/Visitor Error: the configured.*/)
end
end
describe "A visitor and a visitable in a configuration with min =1, and max args set to 2" do
class DuckProcessor2
def initialize
@friend_visitor = Puppet::Pops::Visitor.new(self, "friend", 1, 2)
end
def hi(o, *args)
@friend_visitor.visit(o, *args)
end
def friend_Duck(o, drink, eat="grain")
"Hi #{o.class}, drink=#{drink}, eat=#{eat}"
end
end
class Duck
include Puppet::Pops::Visitable
end
it "should select the expected method when there are is one arguments" do
duck = Duck.new
duck_processor = DuckProcessor2.new
duck_processor.hi(duck, "water").should == "Hi Duck, drink=water, eat=grain"
end
it "should fail if there are too many arguments" do
duck = Duck.new
duck_processor = DuckProcessor2.new
expect { duck_processor.hi(duck, "scotch", "soda", "peanuts") }.to raise_error(/^Visitor Error: Too many.*/)
end
it "should fail if there are too few arguments" do
duck = Duck.new
duck_processor = DuckProcessor2.new
expect { duck_processor.hi(duck) }.to raise_error(/^Visitor Error: Too few.*/)
end
end
end
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