# Copyright, 2015, by Samuel G. D. Williams. <http://www.codeotaku.com>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# THE SOFTWARE.

require 'latinum/resource'

module Latinum::ResourceSpec
	describe Latinum::Resource do
		it "should load and dump resources" do
			resource = Latinum::Resource.load("10 NZD")
			string_representation = Latinum::Resource.dump(resource)
			
			loaded_resource = Latinum::Resource.load(string_representation)
			
			expect(loaded_resource).to be == loaded_resource
		end
		
		it "should load and dump nil correctly" do
			expect(Latinum::Resource.load(nil)).to be nil
			expect(Latinum::Resource.dump(nil)).to be nil
		end
		
		it "should handle empty strings correctly" do
			expect(Latinum::Resource.load("")).to be nil
		end
		
		it "should handle whitespace strings correctly" do
			expect(Latinum::Resource.load(" ")).to be nil
		end
		
		it "should load and dump resources correctly" do
			resource = Latinum::Resource.new(10, 'NZD')
			
			expect(Latinum::Resource.load("10.0 NZD")).to be == resource
			expect(Latinum::Resource.dump(resource)).to be == "10.0 NZD"
		end
		
		it "should inspect nicely" do
			resource = Latinum::Resource.load("10 NZD")
			
			expect(resource.inspect).to be == '#<Latinum::Resource "10.0 NZD">'
		end
		
		it "should compute percentage difference" do
			original_price = Latinum::Resource.load("10 NZD")
			discount_price = Latinum::Resource.load("5 NZD")
			
			discount = (original_price - discount_price) / original_price
			
			expect(discount).to be == 0.5
		end
		
		it "should not divide" do
			original_price = Latinum::Resource.load("10 NZD")
			discount_price = Latinum::Resource.load("5 USD")
			
			expect{original_price / discount_price}.to raise_exception(Latinum::DifferentResourceNameError)
		end
		
		it "should compute quotient" do
			original_price = Latinum::Resource.load("10 NZD")
			
			quotient = original_price / 2.0
			
			expect(original_price / 2.0).to be == Latinum::Resource.load("5 NZD")
		end
	end
end