84f866ffaf
As per puppetlabs/puppet@292233c, this leaves the global seed in a deterministic state, which is bad. Puppet::Util.deterministic_rand() exists to avoid running into this issue, but is only present starting in Puppet 3.2.0.
60 lines
2.2 KiB
Ruby
Executable file
60 lines
2.2 KiB
Ruby
Executable file
#! /usr/bin/env ruby -S rspec
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require 'spec_helper'
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describe "the fqdn_rotate function" do
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let(:scope) { PuppetlabsSpec::PuppetInternals.scope }
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it "should exist" do
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expect(Puppet::Parser::Functions.function("fqdn_rotate")).to eq("function_fqdn_rotate")
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end
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it "should raise a ParseError if there is less than 1 arguments" do
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expect { scope.function_fqdn_rotate([]) }.to( raise_error(Puppet::ParseError))
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end
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it "should rotate a string and the result should be the same size" do
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
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result = scope.function_fqdn_rotate(["asdf"])
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expect(result.size).to(eq(4))
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end
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it "should rotate a string to give the same results for one host" do
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1").twice
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expect(scope.function_fqdn_rotate(["abcdefg"])).to eql(scope.function_fqdn_rotate(["abcdefg"]))
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end
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it "should rotate a string to give different values on different hosts" do
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
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val1 = scope.function_fqdn_rotate(["abcdefghijklmnopqrstuvwxyz01234567890987654321"])
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.2")
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val2 = scope.function_fqdn_rotate(["abcdefghijklmnopqrstuvwxyz01234567890987654321"])
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expect(val1).not_to eql(val2)
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end
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it "should accept objects which extend String" do
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class AlsoString < String
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end
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
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value = AlsoString.new("asdf")
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result = scope.function_fqdn_rotate([value])
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result.size.should(eq(4))
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end
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it "should use the Puppet::Util.deterministic_rand function if available" do
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1")
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if Puppet::Util.respond_to?(:deterministic_rand)
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Puppet::Util.expects(:deterministic_rand).with(113646079810780526294648115052177588845,4)
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end
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scope.function_fqdn_rotate(["asdf"])
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end
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it "should not leave the global seed in a deterministic state" do
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scope.expects(:lookupvar).with("::fqdn").returns("127.0.0.1").twice
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scope.function_fqdn_rotate(["asdf"])
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rand1 = rand()
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scope.function_fqdn_rotate(["asdf"])
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rand2 = rand()
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expect(rand1).not_to eql(rand2)
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end
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end
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