/test/ruby/test_symbol.rb
Ruby | 602 lines | 512 code | 78 blank | 12 comment | 5 complexity | 2ff52955f52ff0331755ed7ca5585dff MD5 | raw file
Possible License(s): GPL-2.0, BSD-3-Clause, AGPL-3.0
- # frozen_string_literal: false
- require 'test/unit'
- class TestSymbol < Test::Unit::TestCase
- # [ruby-core:3573]
- def assert_eval_inspected(sym, valid = true)
- n = sym.inspect
- if valid
- bug5136 = '[ruby-dev:44314]'
- assert_not_match(/\A:"/, n, bug5136)
- end
- assert_nothing_raised(SyntaxError) {assert_equal(sym, eval(n))}
- end
- def test_intern
- assert_equal(':""', ''.intern.inspect)
- assert_equal(':$foo', '$foo'.intern.inspect)
- assert_equal(':"!foo"', '!foo'.intern.inspect)
- assert_equal(':"foo=="', "foo==".intern.inspect)
- end
- def test_all_symbols
- x = Symbol.all_symbols
- assert_kind_of(Array, x)
- assert_empty(x.reject {|s| s.is_a?(Symbol) })
- end
- def test_inspect_invalid
- # 2) Symbol#inspect sometimes returns invalid symbol representations:
- assert_eval_inspected(:"!")
- assert_eval_inspected(:"=", false)
- assert_eval_inspected(:"0", false)
- assert_eval_inspected(:"$1")
- assert_eval_inspected(:"@1", false)
- assert_eval_inspected(:"@@1", false)
- assert_eval_inspected(:"@", false)
- assert_eval_inspected(:"@@", false)
- end
- def assert_inspect_evaled(n)
- assert_nothing_raised(SyntaxError) {assert_equal(n, eval(n).inspect)}
- end
- def test_inspect_suboptimal
- # 3) Symbol#inspect sometimes returns suboptimal symbol representations:
- assert_inspect_evaled(':foo')
- assert_inspect_evaled(':foo!')
- assert_inspect_evaled(':bar?')
- assert_inspect_evaled(":<<")
- assert_inspect_evaled(':>>')
- assert_inspect_evaled(':<=')
- assert_inspect_evaled(':>=')
- assert_inspect_evaled(':=~')
- assert_inspect_evaled(':==')
- assert_inspect_evaled(':===')
- assert_raise(SyntaxError) {eval ':='}
- assert_inspect_evaled(':*')
- assert_inspect_evaled(':**')
- assert_raise(SyntaxError) {eval ':***'}
- assert_inspect_evaled(':+')
- assert_inspect_evaled(':-')
- assert_inspect_evaled(':+@')
- assert_inspect_evaled(':-@')
- assert_inspect_evaled(':|')
- assert_inspect_evaled(':^')
- assert_inspect_evaled(':&')
- assert_inspect_evaled(':/')
- assert_inspect_evaled(':%')
- assert_inspect_evaled(':~')
- assert_inspect_evaled(':`')
- assert_inspect_evaled(':[]')
- assert_inspect_evaled(':[]=')
- assert_raise(SyntaxError) {eval ':||'}
- assert_raise(SyntaxError) {eval ':&&'}
- assert_raise(SyntaxError) {eval ':['}
- end
- def test_inspect_dollar
- # 4) :$- always treats next character literally:
- assert_raise(SyntaxError) {eval ':$-'}
- assert_raise(SyntaxError) {eval ":$-\n"}
- assert_raise(SyntaxError) {eval ":$- "}
- assert_raise(SyntaxError) {eval ":$-#"}
- 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(':$1')
- end
- def test_inspect
- valid = %W{$a @a @@a < << <= <=> > >> >= =~ == === * ** + +@ - -@
- | ^ & / % ~ \` [] []= ! != !~ a a? a! a= A A? A! A=}
- valid.each do |sym|
- assert_equal(':' + sym, sym.intern.inspect)
- end
- invalid = %w{$a? $a! $a= @a? @a! @a= @@a? @@a! @@a= =}
- invalid.each do |sym|
- assert_equal(':"' + sym + '"', sym.intern.inspect)
- end
- 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_to_proc_yield
- assert_ruby_status([], "#{<<-"begin;"}\n#{<<-"end;"}", timeout: 5.0)
- begin;
- GC.stress = true
- true.tap(&:itself)
- end;
- end
- def test_to_proc_new_proc
- assert_ruby_status([], "#{<<-"begin;"}\n#{<<-"end;"}", timeout: 5.0)
- begin;
- GC.stress = true
- 2.times {Proc.new(&:itself)}
- end;
- end
- def test_to_proc_no_method
- assert_separately([], "#{<<-"begin;"}\n#{<<-"end;"}", timeout: 5.0)
- begin;
- bug11566 = '[ruby-core:70980] [Bug #11566]'
- assert_raise(NoMethodError, bug11566) {Proc.new(&:foo).(1)}
- assert_raise(NoMethodError, bug11566) {:foo.to_proc.(1)}
- end;
- end
- def test_to_proc_arg
- assert_separately([], "#{<<-"begin;"}\n#{<<-"end;"}", timeout: 5.0)
- begin;
- def (obj = Object.new).proc(&b) b; end
- assert_same(:itself.to_proc, obj.proc(&:itself))
- end;
- end
- def test_to_proc_lambda?
- assert_predicate(:itself.to_proc, :lambda?)
- end
- def test_to_proc_arity
- assert_equal(-2, :itself.to_proc.arity)
- end
- def test_to_proc_call_with_symbol_proc
- first = 1
- bug11594 = "[ruby-core:71088] [Bug #11594] corrupted the first local variable"
- # symbol which does not have a Proc
- ->(&blk) {}.call(&:test_to_proc_call_with_symbol_proc)
- assert_equal(1, first, bug11594)
- end
- class TestToPRocArgWithRefinements; end
- def _test_to_proc_arg_with_refinements_call(&block)
- block.call TestToPRocArgWithRefinements.new
- end
- def _test_to_proc_with_refinements_call(&block)
- block
- end
- using Module.new {
- refine TestToPRocArgWithRefinements do
- def hoge
- :hoge
- end
- end
- }
- def test_to_proc_arg_with_refinements
- assert_equal(:hoge, _test_to_proc_arg_with_refinements_call(&:hoge))
- end
- def test_to_proc_lambda_with_refinements
- assert_predicate(_test_to_proc_with_refinements_call(&:hoge), :lambda?)
- end
- def test_to_proc_arity_with_refinements
- assert_equal(-2, _test_to_proc_with_refinements_call(&:hoge).arity)
- end
- def self._test_to_proc_arg_with_refinements_call(&block)
- block.call TestToPRocArgWithRefinements.new
- end
- _test_to_proc_arg_with_refinements_call(&:hoge)
- using Module.new {
- refine TestToPRocArgWithRefinements do
- def hoge
- :hogehoge
- end
- end
- }
- def test_to_proc_arg_with_refinements_override
- assert_equal(:hogehoge, _test_to_proc_arg_with_refinements_call(&:hoge))
- end
- def test_to_proc_arg_with_refinements_undefined
- assert_raise(NoMethodError) do
- _test_to_proc_arg_with_refinements_call(&:foo)
- end
- end
- private def return_from_proc
- Proc.new { return 1 }.tap(&:call)
- end
- def test_return_from_symbol_proc
- bug12462 = '[ruby-core:75856] [Bug #12462]'
- assert_equal(1, return_from_proc, bug12462)
- end
- def test_to_proc_for_hash_each
- bug11830 = '[ruby-core:72205] [Bug #11830]'
- assert_normal_exit("#{<<-"begin;"}\n#{<<-'end;'}", bug11830)
- begin;
- {}.each(&:destroy)
- end;
- end
- def test_to_proc_iseq
- assert_separately([], "#{<<-"begin;"}\n#{<<~"end;"}", timeout: 5)
- begin;
- bug11845 = '[ruby-core:72381] [Bug #11845]'
- assert_nil(:class.to_proc.source_location, bug11845)
- assert_equal([[:req], [:rest]], :class.to_proc.parameters, bug11845)
- c = Class.new {define_method(:klass, :class.to_proc)}
- m = c.instance_method(:klass)
- assert_nil(m.source_location, bug11845)
- assert_equal([[:req], [:rest]], m.parameters, bug11845)
- end;
- end
- def test_to_proc_binding
- assert_separately([], "#{<<-"begin;"}\n#{<<~"end;"}", timeout: 5)
- begin;
- bug12137 = '[ruby-core:74100] [Bug #12137]'
- assert_raise(ArgumentError, bug12137) {
- :succ.to_proc.binding
- }
- end;
- end
- def test_to_proc_instance_exec
- bug = '[ruby-core:78839] [Bug #13074] should evaluate on the argument'
- assert_equal(2, BasicObject.new.instance_exec(1, &:succ), bug)
- assert_equal(3, BasicObject.new.instance_exec(1, 2, &:+), bug)
- 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 m_block_given?
- block_given?
- end
- def m2_block_given?(m = nil)
- if m
- [block_given?, m.call(self)]
- else
- block_given?
- end
- end
- def test_block_given_to_proc
- bug8531 = '[Bug #8531]'
- m = :m_block_given?.to_proc
- assert(!m.call(self), "#{bug8531} without block")
- assert(m.call(self) {}, "#{bug8531} with block")
- assert(!m.call(self), "#{bug8531} without block second")
- end
- def test_block_persist_between_calls
- bug8531 = '[Bug #8531]'
- m2 = :m2_block_given?.to_proc
- assert_equal([true, false], m2.call(self, m2) {}, "#{bug8531} nested with block")
- assert_equal([false, false], m2.call(self, m2), "#{bug8531} nested without block")
- end
- def test_block_curry_proc
- assert_separately([], "#{<<-"begin;"}\n#{<<-"end;"}")
- begin;
- b = proc { true }.curry
- assert(b.call, "without block")
- assert(b.call { |o| o.to_s }, "with block")
- assert(b.call(&:to_s), "with sym block")
- end;
- end
- def test_block_curry_lambda
- assert_separately([], "#{<<-"begin;"}\n#{<<-"end;"}")
- begin;
- b = lambda { true }.curry
- assert(b.call, "without block")
- assert(b.call { |o| o.to_s }, "with block")
- assert(b.call(&:to_s), "with sym block")
- end;
- end
- def test_block_method_to_proc
- assert_separately([], "#{<<-"begin;"}\n#{<<-"end;"}")
- begin;
- b = method(:tap).to_proc
- assert(b.call { |o| o.to_s }, "with block")
- assert(b.call(&:to_s), "with sym block")
- end;
- 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"))
- assert_nil(:foo.casecmp(Object.new))
- end
- def test_casecmp?
- assert_equal(true, :FoO.casecmp?(:fOO))
- assert_equal(false, :FoO.casecmp?(:BaR))
- assert_equal(false, :baR.casecmp?(:FoO))
- assert_equal(true, :äöü.casecmp?(:ÄÖÜ))
- assert_nil(:foo.casecmp?("foo"))
- assert_nil(:foo.casecmp?(Object.new))
- 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_MATCH # '=~'
- assert_equal(10, :"FeeFieFoo-Fum" =~ /Fum$/)
- assert_equal(nil, "FeeFieFoo-Fum" =~ /FUM$/)
- o = Object.new
- def o.=~(x); x + "bar"; end
- assert_equal("foobar", :"foo" =~ o)
- assert_raise(TypeError) { :"foo" =~ "foo" }
- end
- def test_match_method
- assert_equal("bar", :"foobarbaz".match(/bar/).to_s)
- o = Regexp.new('foo')
- def o.match(x, y, z); x + y + z; end
- assert_equal("foobarbaz", :"foo".match(o, "bar", "baz"))
- x = nil
- :"foo".match(o, "bar", "baz") {|y| x = y }
- assert_equal("foobarbaz", x)
- assert_raise(ArgumentError) { :"foo".match }
- end
- def test_match_p_regexp
- /backref/ =~ 'backref'
- # must match here, but not in a separate method, e.g., assert_send,
- # to check if $~ is affected or not.
- assert_equal(true, "".match?(//))
- assert_equal(true, :abc.match?(/.../))
- assert_equal(true, 'abc'.match?(/b/))
- assert_equal(true, 'abc'.match?(/b/, 1))
- assert_equal(true, 'abc'.match?(/../, 1))
- assert_equal(true, 'abc'.match?(/../, -2))
- assert_equal(false, 'abc'.match?(/../, -4))
- assert_equal(false, 'abc'.match?(/../, 4))
- assert_equal(true, ("\u3042" + '\x').match?(/../, 1))
- assert_equal(true, ''.match?(/\z/))
- assert_equal(true, 'abc'.match?(/\z/))
- assert_equal(true, 'Ruby'.match?(/R.../))
- assert_equal(false, 'Ruby'.match?(/R.../, 1))
- assert_equal(false, 'Ruby'.match?(/P.../))
- assert_equal('backref', $&)
- end
- def test_match_p_string
- /backref/ =~ 'backref'
- # must match here, but not in a separate method, e.g., assert_send,
- # to check if $~ is affected or not.
- assert_equal(true, "".match?(''))
- assert_equal(true, :abc.match?('...'))
- assert_equal(true, 'abc'.match?('b'))
- assert_equal(true, 'abc'.match?('b', 1))
- assert_equal(true, 'abc'.match?('..', 1))
- assert_equal(true, 'abc'.match?('..', -2))
- assert_equal(false, 'abc'.match?('..', -4))
- assert_equal(false, 'abc'.match?('..', 4))
- assert_equal(true, ("\u3042" + '\x').match?('..', 1))
- assert_equal(true, ''.match?('\z'))
- assert_equal(true, 'abc'.match?('\z'))
- assert_equal(true, 'Ruby'.match?('R...'))
- assert_equal(false, 'Ruby'.match?('R...', 1))
- assert_equal(false, 'Ruby'.match?('P...'))
- assert_equal('backref', $&)
- end
- def test_symbol_popped
- assert_nothing_raised { eval('a = 1; :"#{ a }"; 1') }
- end
- def test_ascii_incomat_inspect
- [Encoding::UTF_16LE, Encoding::UTF_16BE,
- Encoding::UTF_32LE, Encoding::UTF_32BE].each do |e|
- assert_equal(':"abc"', "abc".encode(e).to_sym.inspect)
- assert_equal(':"\\u3042\\u3044\\u3046"', "\u3042\u3044\u3046".encode(e).to_sym.inspect)
- end
- end
- def test_symbol_encoding
- assert_equal(Encoding::US_ASCII, "$-A".force_encoding("iso-8859-15").intern.encoding)
- assert_equal(Encoding::US_ASCII, "foobar~!".force_encoding("iso-8859-15").intern.encoding)
- assert_equal(Encoding::UTF_8, "\u{2192}".intern.encoding)
- assert_raise_with_message(EncodingError, /\\xb0/i) {"\xb0a".force_encoding("utf-8").intern}
- end
- def test_singleton_method
- assert_raise(TypeError) { a = :foo; def a.foo; end }
- end
- SymbolsForEval = [
- :foo,
- "dynsym_#{Random.rand(10000)}_#{Time.now}".to_sym
- ]
- def test_instance_eval
- bug11086 = '[ruby-core:68961] [Bug #11086]'
- SymbolsForEval.each do |sym|
- assert_nothing_raised(TypeError, sym, bug11086) {
- sym.instance_eval {}
- }
- assert_raise(TypeError, sym, bug11086) {
- sym.instance_eval {def foo; end}
- }
- end
- end
- def test_instance_exec
- bug11086 = '[ruby-core:68961] [Bug #11086]'
- SymbolsForEval.each do |sym|
- assert_nothing_raised(TypeError, sym, bug11086) {
- sym.instance_exec {}
- }
- assert_raise(TypeError, sym, bug11086) {
- sym.instance_exec {def foo; end}
- }
- end
- end
- def test_frozen_symbol
- assert_equal(true, :foo.frozen?)
- assert_equal(true, :each.frozen?)
- assert_equal(true, :+.frozen?)
- assert_equal(true, "foo#{Time.now.to_i}".to_sym.frozen?)
- assert_equal(true, :foo.to_sym.frozen?)
- end
- def test_symbol_gc_1
- assert_normal_exit('".".intern;GC.start(immediate_sweep:false);eval %[GC.start;".".intern]',
- '',
- child_env: '--disable-gems')
- assert_normal_exit('".".intern;GC.start(immediate_sweep:false);eval %[GC.start;:"."]',
- '',
- child_env: '--disable-gems')
- assert_normal_exit('".".intern;GC.start(immediate_sweep:false);eval %[GC.start;%i"."]',
- '',
- child_env: '--disable-gems')
- assert_normal_exit('tap{".".intern};GC.start(immediate_sweep:false);' +
- 'eval %[syms=Symbol.all_symbols;GC.start;syms.each(&:to_sym)]',
- '',
- child_env: '--disable-gems')
- end
- def test_dynamic_attrset_id
- bug10259 = '[ruby-dev:48559] [Bug #10259]'
- class << (obj = Object.new)
- attr_writer :unagi
- end
- assert_nothing_raised(NoMethodError, bug10259) {obj.send("unagi=".intern, 1)}
- end
- def test_symbol_fstr_memory_leak
- bug10686 = '[ruby-core:67268] [Bug #10686]'
- assert_no_memory_leak([], "#{<<~"begin;"}\n#{<<~'else;'}", "#{<<~'end;'}", bug10686, limit: 1.71, rss: true, timeout: 20)
- begin;
- n = 100_000
- n.times { |i| i.to_s.to_sym }
- else;
- (2 * n).times { |i| (i + n).to_s.to_sym }
- end;
- end
- def test_hash_redefinition
- assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
- begin;
- bug11035 = '[ruby-core:68767] [Bug #11035]'
- class Symbol
- def hash
- raise
- end
- end
- h = {}
- assert_nothing_raised(RuntimeError, bug11035) {
- h[:foo] = 1
- }
- assert_nothing_raised(RuntimeError, bug11035) {
- h['bar'.to_sym] = 2
- }
- end;
- end
- def test_hash_nondeterministic
- ruby = EnvUtil.rubybin
- assert_not_equal :foo.hash, `#{ruby} -e 'puts :foo.hash'`.to_i,
- '[ruby-core:80430] [Bug #13376]'
- sym = "dynsym_#{Random.rand(10000)}_#{Time.now}"
- assert_not_equal sym.to_sym.hash,
- `#{ruby} -e 'puts #{sym.inspect}.to_sym.hash'`.to_i
- end
- def test_eq_can_be_redefined
- assert_in_out_err([], <<-RUBY, ["foo"], [])
- class Symbol
- remove_method :==
- def ==(obj)
- "foo"
- end
- end
- puts :a == :a
- RUBY
- end
- def test_start_with?
- assert_equal(true, :hello.start_with?("hel"))
- assert_equal(false, :hello.start_with?("el"))
- assert_equal(true, :hello.start_with?("el", "he"))
- bug5536 = '[ruby-core:40623]'
- assert_raise(TypeError, bug5536) {:str.start_with? :not_convertible_to_string}
- assert_equal(true, :hello.start_with?(/hel/))
- assert_equal("hel", $&)
- assert_equal(false, :hello.start_with?(/el/))
- assert_nil($&)
- end
- def test_end_with?
- assert_equal(true, :hello.end_with?("llo"))
- assert_equal(false, :hello.end_with?("ll"))
- assert_equal(true, :hello.end_with?("el", "lo"))
- bug5536 = '[ruby-core:40623]'
- assert_raise(TypeError, bug5536) {:str.end_with? :not_convertible_to_string}
- end
- end