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ruby--ruby/test/ruby/test_symbol.rb

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Ruby

# 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_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
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 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([[: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([[: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)
assert_raise(TypeError) { :"".match(nil) }
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', $&)
end
def test_match_p_nil
assert_raise(TypeError) { :''.match?(nil) }
end
def test_symbol_popped
assert_nothing_raised { eval('a = 1; :"#{ a }"; 1') }
end
def test_ascii_incomat_inspect
[Encoding::UTF_16LE, Encoding::UTF_16BE,
Encoding::UTF_32LE, Encoding::UTF_32BE].each do |e|
assert_equal(':"abc"', "abc".encode(e).to_sym.inspect)
assert_equal(':"\\u3042\\u3044\\u3046"', "\u3042\u3044\u3046".encode(e).to_sym.inspect)
end
end
def test_symbol_encoding
assert_equal(Encoding::US_ASCII, "$-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_leak
bug10686 = '[ruby-core:67268] [Bug #10686]'
x = x = 0
assert_no_memory_leak([], '200_000.times { |i| i.to_s.to_sym }; GC.start', "#{<<-"begin;"}\n#{<<-"end;"}", bug10686, limit: 1.71, rss: true, timeout: 20)
begin;
200_000.times { |i| (i + 200_000).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