puppetlabs-stdlib/spec/unit/puppet/parser/functions/abs_spec.rb

#! /usr/bin/env ruby -S rspec
require 'spec_helper'

describe "the abs function" do
  before :all do
    Puppet::Parser::Functions.autoloader.loadall
  end

  before :each do
    @scope = Puppet::Parser::Scope.new
  end

  it "should exist" do
    Puppet::Parser::Functions.function("abs").should == "function_abs"
  end

  it "should raise a ParseError if there is less than 1 arguments" do
    lambda { @scope.function_abs([]) }.should( raise_error(Puppet::ParseError))
  end

  it "should convert a negative number into a positive" do
    result = @scope.function_abs(["-34"])
    result.should(eq(34))
  end

  it "should do nothing with a positive number" do
    result = @scope.function_abs(["5678"])
    result.should(eq(5678))
  end

end