--- /dev/null
+#!/usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the is_function_available function" do
+ before :all do
+ Puppet::Parser::Functions.autoloader.loadall
+ end
+
+ before :each do
+ @scope = Puppet::Parser::Scope.new
+ end
+
+ it "should exist" do
+ expect(Puppet::Parser::Functions.function("is_function_available")).to eq("function_is_function_available")
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ expect { @scope.function_is_function_available([]) }.to( raise_error(Puppet::ParseError))
+ end
+
+ it "should return false if a nonexistent function is passed" do
+ result = @scope.function_is_function_available(['jeff_mccunes_left_sock'])
+ expect(result).to(eq(false))
+ end
+
+ it "should return true if an available function is passed" do
+ result = @scope.function_is_function_available(['require'])
+ expect(result).to(eq(true))
+ end
+
+end