#! /usr/bin/env ruby -S rspec require 'spec_helper' describe "the flatten function" do let(:scope) { PuppetlabsSpec::PuppetInternals.scope } it "should exist" do Puppet::Parser::Functions.function("flatten").should == "function_flatten" end it "should raise a ParseError if there is less than 1 arguments" do lambda { scope.function_flatten([]) }.should( raise_error(Puppet::ParseError)) end it "should raise a ParseError if there is more than 1 argument" do lambda { scope.function_flatten([[], []]) }.should( raise_error(Puppet::ParseError)) end it "should flatten a complex data structure" do result = scope.function_flatten([["a","b",["c",["d","e"],"f","g"]]]) result.should(eq(["a","b","c","d","e","f","g"])) end it "should do nothing to a structure that is already flat" do result = scope.function_flatten([["a","b","c","d"]]) result.should(eq(["a","b","c","d"])) end end