require 'test/unit' require_relative 'envutil' class TestEval < Test::Unit::TestCase @ivar = 12 @@cvar = 13 $gvar__eval = 14 Const = 15 def ruby(*args) args = ['-e', '$>.write($<.read)'] if args.empty? ruby = EnvUtil.rubybin f = IO.popen([ruby] + args, 'r+') yield(f) ensure f.close unless !f || f.closed? end def test_eval_basic assert_equal nil, eval("nil") assert_equal true, eval("true") assert_equal false, eval("false") assert_equal self, eval("self") assert_equal 1, eval("1") assert_equal :sym, eval(":sym") assert_equal 11, eval("11") @ivar = 12 assert_equal 12, eval("@ivar") assert_equal 13, eval("@@cvar") assert_equal 14, eval("$gvar__eval") assert_equal 15, eval("Const") assert_equal 16, eval("7 + 9") assert_equal 17, eval("17.to_i") assert_equal "18", eval(%q("18")) assert_equal "19", eval(%q("1#{9}")) 1.times { assert_equal 12, eval("@ivar") assert_equal 13, eval("@@cvar") assert_equal 14, eval("$gvar__eval") assert_equal 15, eval("Const") } end def test_eval_binding_basic assert_equal nil, eval("nil", binding()) assert_equal true, eval("true", binding()) assert_equal false, eval("false", binding()) assert_equal self, eval("self", binding()) assert_equal 1, eval("1", binding()) assert_equal :sym, eval(":sym", binding()) assert_equal 11, eval("11", binding()) @ivar = 12 assert_equal 12, eval("@ivar", binding()) assert_equal 13, eval("@@cvar", binding()) assert_equal 14, eval("$gvar__eval", binding()) assert_equal 15, eval("Const", binding()) assert_equal 16, eval("7 + 9", binding()) assert_equal 17, eval("17.to_i", binding()) assert_equal "18", eval(%q("18"), binding()) assert_equal "19", eval(%q("1#{9}"), binding()) 1.times { assert_equal 12, eval("@ivar") assert_equal 13, eval("@@cvar") assert_equal 14, eval("$gvar__eval") assert_equal 15, eval("Const") } end def test_module_eval_string_basic c = self.class assert_equal nil, c.module_eval("nil") assert_equal true, c.module_eval("true") assert_equal false, c.module_eval("false") assert_equal c, c.module_eval("self") assert_equal :sym, c.module_eval(":sym") assert_equal 11, c.module_eval("11") @ivar = 12 assert_equal 12, c.module_eval("@ivar") assert_equal 13, c.module_eval("@@cvar") assert_equal 14, c.module_eval("$gvar__eval") assert_equal 15, c.module_eval("Const") assert_equal 16, c.module_eval("7 + 9") assert_equal 17, c.module_eval("17.to_i") assert_equal "18", c.module_eval(%q("18")) assert_equal "19", c.module_eval(%q("1#{9}")) @ivar = 12 1.times { assert_equal 12, c.module_eval("@ivar") assert_equal 13, c.module_eval("@@cvar") assert_equal 14, c.module_eval("$gvar__eval") assert_equal 15, c.module_eval("Const") } end def test_module_eval_block_basic c = self.class assert_equal nil, c.module_eval { nil } assert_equal true, c.module_eval { true } assert_equal false, c.module_eval { false } assert_equal c, c.module_eval { self } assert_equal :sym, c.module_eval { :sym } assert_equal 11, c.module_eval { 11 } @ivar = 12 assert_equal 12, c.module_eval { @ivar } assert_equal 13, c.module_eval { @@cvar } assert_equal 14, c.module_eval { $gvar__eval } assert_equal 15, c.module_eval { Const } assert_equal 16, c.module_eval { 7 + 9 } assert_equal 17, c.module_eval { "17".to_i } assert_equal "18", c.module_eval { "18" } assert_equal "19", c.module_eval { "1#{9}" } @ivar = 12 1.times { assert_equal 12, c.module_eval { @ivar } assert_equal 13, c.module_eval { @@cvar } assert_equal 14, c.module_eval { $gvar__eval } assert_equal 15, c.module_eval { Const } } end def forall_TYPE objects = [Object.new, [], nil, true, false] # TODO: check objects.each do |obj| obj.instance_variable_set :@ivar, 12 yield obj end end def test_instance_eval_string_basic forall_TYPE do |o| assert_equal nil, o.instance_eval("nil") assert_equal true, o.instance_eval("true") assert_equal false, o.instance_eval("false") assert_equal o, o.instance_eval("self") assert_equal 1, o.instance_eval("1") assert_equal :sym, o.instance_eval(":sym") assert_equal 11, o.instance_eval("11") assert_equal 12, o.instance_eval("@ivar") assert_equal 13, o.instance_eval("@@cvar") assert_equal 14, o.instance_eval("$gvar__eval") assert_equal 15, o.instance_eval("Const") assert_equal 16, o.instance_eval("7 + 9") assert_equal 17, o.instance_eval("17.to_i") assert_equal "18", o.instance_eval(%q("18")) assert_equal "19", o.instance_eval(%q("1#{9}")) 1.times { assert_equal 12, o.instance_eval("@ivar") assert_equal 13, o.instance_eval("@@cvar") assert_equal 14, o.instance_eval("$gvar__eval") assert_equal 15, o.instance_eval("Const") } end end def test_instance_eval_block_basic forall_TYPE do |o| assert_equal nil, o.instance_eval { nil } assert_equal true, o.instance_eval { true } assert_equal false, o.instance_eval { false } assert_equal o, o.instance_eval { self } assert_equal 1, o.instance_eval { 1 } assert_equal :sym, o.instance_eval { :sym } assert_equal 11, o.instance_eval { 11 } assert_equal 12, o.instance_eval { @ivar } assert_equal 13, o.instance_eval { @@cvar } assert_equal 14, o.instance_eval { $gvar__eval } assert_equal 15, o.instance_eval { Const } assert_equal 16, o.instance_eval { 7 + 9 } assert_equal 17, o.instance_eval { 17.to_i } assert_equal "18", o.instance_eval { "18" } assert_equal "19", o.instance_eval { "1#{9}" } 1.times { assert_equal 12, o.instance_eval { @ivar } assert_equal 13, o.instance_eval { @@cvar } assert_equal 14, o.instance_eval { $gvar__eval } assert_equal 15, o.instance_eval { Const } } end end def test_instance_eval_cvar [Object.new, [], 7, :sym, true, false, nil].each do |obj| assert_equal(13, obj.instance_eval("@@cvar")) assert_equal(13, obj.instance_eval{@@cvar}) # assert_raise(NameError){obj.instance_eval("@@cvar")} # assert_raise(NameError){obj.instance_eval{@@cvar}} end end def test_instance_eval_method bug2788 = '[ruby-core:28324]' [Object.new, [], nil, true, false].each do |o| assert_nothing_raised(TypeError, "#{bug2788} (#{o.inspect})") do o.instance_eval { def defd_using_instance_eval() :ok end } end assert_equal(:ok, o.defd_using_instance_eval) class << o remove_method :defd_using_instance_eval end end end def test_instance_eval_on_argf_singleton_class bug8188 = '[ruby-core:53839] [Bug #8188]' assert_warning('', bug8188) do ARGF.singleton_class.instance_eval{} end end class Foo Bar = 2 end def test_instance_eval_const bar = nil assert_nothing_raised(NameError) do bar = Foo.new.instance_eval("Bar") end assert_equal(2, bar) end # # From ruby/test/ruby/test_eval.rb # def test_ev local1 = "local1" lambda { local2 = "local2" return binding }.call end def test_eval_orig assert_nil(eval("")) bad=false eval 'while false; bad = true; print "foo\n" end' assert(!bad) assert(eval('TRUE')) assert(eval('true')) assert(!eval('NIL')) assert(!eval('nil')) assert(!eval('FALSE')) assert(!eval('false')) $foo = 'assert(true)' begin eval $foo rescue assert(false) end assert_equal('assert(true)', eval("$foo")) assert_equal(true, eval("true")) i = 5 assert(eval("i == 5")) assert_equal(5, eval("i")) assert(eval("defined? i")) x = test_ev assert_equal("local1", eval("local1", x)) # normal local var assert_equal("local2", eval("local2", x)) # nested local var bad = true begin p eval("local1") rescue NameError # must raise error bad = false end assert(!bad) # !! use class_eval to avoid nested definition x = self.class.class_eval %q( module EvTest EVTEST1 = 25 evtest2 = 125 binding end ) assert_equal(25, eval("EVTEST1", x)) # constant in module assert_equal(125, eval("evtest2", x)) # local var in module bad = true begin eval("EVTEST1") rescue NameError # must raise error bad = false end assert(!bad) if false # Ruby 2.0 doesn't see Proc as Binding x = proc{} eval "i4 = 1", x assert_equal(1, eval("i4", x)) x = proc{proc{}}.call eval "i4 = 22", x assert_equal(22, eval("i4", x)) t = [] x = proc{proc{}}.call eval "(0..9).each{|i5| t[i5] = proc{i5*2}}", x assert_equal(8, t[4].call) end x = binding eval "i = 1", x assert_equal(1, eval("i", x)) x = proc{binding}.call eval "i = 22", x assert_equal(22, eval("i", x)) t = [] x = proc{binding}.call eval "(0..9).each{|i5| t[i5] = proc{i5*2}}", x assert_equal(8, t[4].call) x = proc{binding}.call eval "for i6 in 1..1; j6=i6; end", x assert(eval("defined? i6", x)) assert(eval("defined? j6", x)) proc { p = binding eval "foo11 = 1", p foo22 = 5 proc{foo11=22}.call proc{foo22=55}.call # assert_equal(eval("foo11"), eval("foo11", p)) # assert_equal(1, eval("foo11")) assert_equal(eval("foo22"), eval("foo22", p)) assert_equal(55, eval("foo22")) }.call if false # Ruby 2.0 doesn't see Proc as Binding p1 = proc{i7 = 0; proc{i7}}.call assert_equal(0, p1.call) eval "i7=5", p1 assert_equal(5, p1.call) assert(!defined?(i7)) end if false # Ruby 2.0 doesn't see Proc as Binding p1 = proc{i7 = 0; proc{i7}}.call i7 = nil assert_equal(0, p1.call) eval "i7=1", p1 assert_equal(1, p1.call) eval "i7=5", p1 assert_equal(5, p1.call) assert_nil(i7) end end def test_nil_instance_eval_cvar def nil.test_binding binding end bb = eval("nil.instance_eval \"binding\"", nil.test_binding) assert_raise(NameError, "[ruby-dev:24103]") { eval("@@a", bb) } class << nil remove_method :test_binding end end def test_fixnum_instance_eval_cvar assert_raise(NameError, "[ruby-dev:24213]") { 1.instance_eval "@@a" } end def test_cvar_scope_with_instance_eval # TODO: check Fixnum.class_eval "@@test_cvar_scope_with_instance_eval = 1" # depends on [ruby-dev:24229] @@test_cvar_scope_with_instance_eval = 4 assert_equal(4, 1.instance_eval("@@test_cvar_scope_with_instance_eval"), "[ruby-dev:24223]") Fixnum.__send__(:remove_class_variable, :@@test_cvar_scope_with_instance_eval) end def test_eval_and_define_method assert_nothing_raised("[ruby-dev:24228]") { def temporally_method_for_test_eval_and_define_method(&block) lambda { class << Object.new; self end.send(:define_method, :zzz, &block) } end v = eval("temporally_method_for_test_eval_and_define_method {}") {}[0] = {} v.call } end def test_define_method_block cc = Class.new do define_method(:foo) {|&block| block.call if block } end c = cc.new x = "ng" c.foo() {x = "ok"} assert_equal("ok", x) end def test_define_method_toplevel feature6609 = '[ruby-core:45715]' main = eval("self", TOPLEVEL_BINDING) assert_nothing_raised(NoMethodError, feature6609) do main.instance_eval do define_method("feature6609_block") {feature6609} end end assert_equal(feature6609, feature6609_block) assert_nothing_raised(NoMethodError, feature6609) do main.instance_eval do define_method("feature6609_method", Object.instance_method(:feature6609_block)) end end assert_equal(feature6609, feature6609_method) end def test_eval_using_integer_as_binding assert_raise(TypeError) { eval("", 1) } end def test_eval_raise assert_raise(RuntimeError) { eval("raise ''") } end def test_eval_with_toplevel_binding # [ruby-dev:37142] ruby("-e", "x = 0; eval('p x', TOPLEVEL_BINDING)") do |f| f.close_write assert_equal("0", f.read.chomp) end end def test_eval_ascii_incompatible assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-16be"))} assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-16le"))} assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-32be"))} assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-32le"))} end def test_instance_eval_method_proc bug3860 = Class.new do def initialize(a); @a=a end def get(*args) @a end end foo = bug3860.new 1 foo_pr = foo.method(:get).to_proc result = foo.instance_eval(&foo_pr) assert_equal(1, result, 'Bug #3786, Bug #3860, [ruby-core:32501]') end def test_file_encoding fname = "\u{3042}".encode("euc-jp") assert_equal(fname, eval("__FILE__", nil, fname, 1)) end end