--- /dev/null
+#! /usr/bin/env ruby -S rspec
+require 'spec_helper'
+
+describe "the fqdn_rotate function" do
+ let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
+
+ it "should exist" do
+ expect(Puppet::Parser::Functions.function("fqdn_rotate")).to eq("function_fqdn_rotate")
+ end
+
+ it "should raise a ParseError if there is less than 1 arguments" do
+ expect { scope.function_fqdn_rotate([]) }.to( raise_error(Puppet::ParseError))
+ end
+
+ it "should rotate a string and the result should be the same size" do
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
+ result = scope.function_fqdn_rotate(["asdf"])
+ expect(result.size).to(eq(4))
+ end
+
+ it "should rotate a string to give the same results for one host" do
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1").twice
+ expect(scope.function_fqdn_rotate(["abcdefg"])).to eql(scope.function_fqdn_rotate(["abcdefg"]))
+ end
+
+ it "should rotate a string to give different values on different hosts" do
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
+ val1 = scope.function_fqdn_rotate(["abcdefghijklmnopqrstuvwxyz01234567890987654321"])
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.2")
+ val2 = scope.function_fqdn_rotate(["abcdefghijklmnopqrstuvwxyz01234567890987654321"])
+ expect(val1).not_to eql(val2)
+ end
+
+ it "should accept objects which extend String" do
+ class AlsoString < String
+ end
+
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
+ value = AlsoString.new("asdf")
+ result = scope.function_fqdn_rotate([value])
+ result.size.should(eq(4))
+ end
+
+ it "should use the Puppet::Util.deterministic_rand function if available" do
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
+ if Puppet::Util.respond_to?(:deterministic_rand)
+ Puppet::Util.expects(:deterministic_rand).with(113646079810780526294648115052177588845,4)
+ end
+ scope.function_fqdn_rotate(["asdf"])
+ end
+
+ it "should not leave the global seed in a deterministic state" do
+ scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1").twice
+ scope.function_fqdn_rotate(["asdf"])
+ rand1 = rand()
+ scope.function_fqdn_rotate(["asdf"])
+ rand2 = rand()
+ expect(rand1).not_to eql(rand2)
+ end
+end