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#! /usr/bin/env ruby -S rspec
require 'spec_helper'
describe "the flatten function" do
let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
it "should exist" do
expect(Puppet::Parser::Functions.function("flatten")).to eq("function_flatten")
end
it "should raise a ParseError if there is less than 1 arguments" do
expect { scope.function_flatten([]) }.to( raise_error(Puppet::ParseError))
end
it "should raise a ParseError if there is more than 1 argument" do
expect { scope.function_flatten([[], []]) }.to( raise_error(Puppet::ParseError))
end
it "should flatten a complex data structure" do
result = scope.function_flatten([["a","b",["c",["d","e"],"f","g"]]])
expect(result).to(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"]])
expect(result).to(eq(["a","b","c","d"]))
end
end
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