require 'spec_helper' describe 'fqdn_rand_string' do let(:default_charset) { %r{\A[a-zA-Z0-9]{100}\z} } it { is_expected.not_to eq(nil) } it { is_expected.to run.with_params().and_raise_error(ArgumentError, /wrong number of arguments/i) } it { is_expected.to run.with_params(0).and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params(1.5).and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params(-10).and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params("-10").and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params("string").and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params([]).and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params({}).and_raise_error(ArgumentError, /first argument must be a positive integer/) } it { is_expected.to run.with_params(1, 1).and_raise_error(ArgumentError, /second argument must be undef or a string/) } it { is_expected.to run.with_params(1, []).and_raise_error(ArgumentError, /second argument must be undef or a string/) } it { is_expected.to run.with_params(1, {}).and_raise_error(ArgumentError, /second argument must be undef or a string/) } it { is_expected.to run.with_params(100).and_return(default_charset) } it { is_expected.to run.with_params("100").and_return(default_charset) } it { is_expected.to run.with_params(100, nil).and_return(default_charset) } it { is_expected.to run.with_params(100, '').and_return(default_charset) } it { is_expected.to run.with_params(100, 'a').and_return(/\Aa{100}\z/) } it { is_expected.to run.with_params(100, 'ab').and_return(/\A[ab]{100}\z/) } it { is_expected.to run.with_params(100, 'ãβ').and_return(/\A[ãβ]{100}\z/) } it "provides the same 'random' value on subsequent calls for the same host" do expect(fqdn_rand_string(10)).to eql(fqdn_rand_string(10)) end it "considers the same host and same extra arguments to have the same random sequence" do first_random = fqdn_rand_string(10, :extra_identifier => [1, "same", "host"]) second_random = fqdn_rand_string(10, :extra_identifier => [1, "same", "host"]) expect(first_random).to eql(second_random) end it "allows extra arguments to control the random value on a single host" do first_random = fqdn_rand_string(10, :extra_identifier => [1, "different", "host"]) second_different_random = fqdn_rand_string(10, :extra_identifier => [2, "different", "host"]) expect(first_random).not_to eql(second_different_random) end it "should return different strings for different hosts" do val1 = fqdn_rand_string(10, :host => "first.host.com") val2 = fqdn_rand_string(10, :host => "second.host.com") expect(val1).not_to eql(val2) end def fqdn_rand_string(max, args = {}) host = args[:host] || '127.0.0.1' charset = args[:charset] extra = args[:extra_identifier] || [] # workaround not being able to use let(:facts) because some tests need # multiple different hostnames in one context scope.stubs(:lookupvar).with("::fqdn", {}).returns(host) function_args = [max] if args.has_key?(:charset) or !extra.empty? function_args << charset end function_args += extra scope.function_fqdn_rand_string(function_args) end end