JezK
Edit File: test_invocation_chain.rb
#!/usr/bin/env ruby require 'test/unit' require 'rake' require 'test/rake_test_setup' ###################################################################### class TestAnEmptyInvocationChain < Test::Unit::TestCase include TestMethods def setup @empty = Rake::InvocationChain::EMPTY end def test_should_be_able_to_add_members assert_nothing_raised do @empty.append("A") end end def test_to_s assert_equal "TOP", @empty.to_s end end ###################################################################### class TestAnInvocationChainWithOneMember < Test::Unit::TestCase include TestMethods def setup @empty = Rake::InvocationChain::EMPTY @first_member = "A" @chain = @empty.append(@first_member) end def test_should_report_first_member_as_a_member assert @chain.member?(@first_member) end def test_should_fail_when_adding_original_member ex = assert_exception RuntimeError do @chain.append(@first_member) end assert_match(/circular +dependency/i, ex.message) assert_match(/A.*=>.*A/, ex.message) end def test_to_s assert_equal "TOP => A", @chain.to_s end end ###################################################################### class TestAnInvocationChainWithMultipleMember < Test::Unit::TestCase include TestMethods def setup @first_member = "A" @second_member = "B" ch = Rake::InvocationChain::EMPTY.append(@first_member) @chain = ch.append(@second_member) end def test_should_report_first_member_as_a_member assert @chain.member?(@first_member) end def test_should_report_second_member_as_a_member assert @chain.member?(@second_member) end def test_should_fail_when_adding_original_member ex = assert_exception RuntimeError do @chain.append(@first_member) end assert_match(/A.*=>.*B.*=>.*A/, ex.message) end end