--- /dev/null
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the empty function" do
+ let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+ it "should exist" do
+ expect(Puppet::Parser::Functions.function("empty")).to eq("function_empty")
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ expect { scope.function_empty([]) }.to( raise_error(Puppet::ParseError))
+ end
+
+ it "should return a true for an empty string" do
+ result = scope.function_empty([''])
+ expect(result).to(eq(true))
+ end
+
+ it "should return a false for a non-empty string" do
+ result = scope.function_empty(['asdf'])
+ expect(result).to(eq(false))
+ end
+
+ it "should accept objects which extend String" do
+ class AlsoString < String
+ end
+
+ value = AlsoString.new()
+ result = scope.function_empty([value])
+ result.should(eq(true))
+ end
+end