require 'test/unit' class TestSymbol < Test::Unit::TestCase # [ruby-core:3573] def assert_eval_inspected(sym) n = sym.inspect assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(n))} end def test_inspect_invalid # 2) Symbol#inspect sometimes returns invalid symbol representations: assert_eval_inspected(:"!") assert_eval_inspected(:"=") assert_eval_inspected(:"0") assert_eval_inspected(:"$1") assert_eval_inspected(:"@1") assert_eval_inspected(:"@@1") assert_eval_inspected(:"@") assert_eval_inspected(:"@@") end def assert_inspect_evaled(n) assert_nothing_raised(SyntaxError) {assert_equal(n, eval(n).inspect)} end def test_inspect_suboptimal # 3) Symbol#inspect sometimes returns suboptimal symbol representations: assert_inspect_evaled(':foo') assert_inspect_evaled(':foo!') assert_inspect_evaled(':bar?') assert_inspect_evaled(':<<') assert_inspect_evaled(':>>') assert_inspect_evaled(':<=') assert_inspect_evaled(':>=') assert_inspect_evaled(':=~') assert_inspect_evaled(':==') assert_inspect_evaled(':===') assert_raise(SyntaxError) {eval ':='} assert_inspect_evaled(':*') assert_inspect_evaled(':**') assert_raise(SyntaxError) {eval ':***'} assert_inspect_evaled(':+') assert_inspect_evaled(':-') assert_inspect_evaled(':+@') assert_inspect_evaled(':-@') assert_inspect_evaled(':|') assert_inspect_evaled(':^') assert_inspect_evaled(':&') assert_inspect_evaled(':/') assert_inspect_evaled(':%') assert_inspect_evaled(':~') assert_inspect_evaled(':`') assert_inspect_evaled(':[]') assert_inspect_evaled(':[]=') assert_raise(SyntaxError) {eval ':||'} assert_raise(SyntaxError) {eval ':&&'} assert_raise(SyntaxError) {eval ':['} end def test_inspect_dollar # 4) :$- always treats next character literally: sym = "$-".intern assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(':$-'))} assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(":$-\n"))} assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(":$- "))} assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(":$-#"))} assert_raise(SyntaxError) {eval ':$-('} end def test_inspect_number # 5) Inconsistency between :$0 and :$1? The first one is valid, but the # latter isn't. assert_inspect_evaled(':$0') assert_inspect_evaled(':$1') end def test_to_proc assert_equal %w(1 2 3), (1..3).map(&:to_s) [ [], [1], [1, 2], [1, [2, 3]], ].each do |ary| ary_id = ary.object_id assert_equal ary_id, :object_id.to_proc.call(ary) ary_ids = ary.collect{|x| x.object_id } assert_equal ary_ids, ary.collect(&:object_id) end end def test_call o = Object.new def o.foo(x, y); x + y; end assert_equal(3, :foo.to_proc.call(o, 1, 2)) assert_raise(ArgumentError) { :foo.to_proc.call } end def test_succ assert_equal(:fop, :foo.succ) end def test_cmp assert_equal(0, :FoO <=> :FoO) assert_equal(-1, :FoO <=> :fOO) assert_equal(1, :fOO <=> :FoO) assert_nil(:foo <=> "foo") end def test_casecmp assert_equal(0, :FoO.casecmp(:fOO)) assert_equal(1, :FoO.casecmp(:BaR)) assert_equal(-1, :baR.casecmp(:FoO)) assert_nil(:foo.casecmp("foo")) end def test_length assert_equal(3, :FoO.length) assert_equal(3, :FoO.size) end def test_empty assert_equal(false, :FoO.empty?) assert_equal(true, :"".empty?) end def test_case assert_equal(:FOO, :FoO.upcase) assert_equal(:foo, :FoO.downcase) assert_equal(:Foo, :foo.capitalize) assert_equal(:fOo, :FoO.swapcase) end def test_symbol_poped assert_nothing_raised { eval('a = 1; :"#{ a }"; 1') } end end