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test_syntax.rb
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test_syntax.rb
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# frozen_string_literal: false
require 'test/unit'
class TestSyntax < Test::Unit::TestCase
using Module.new {
refine(Object) do
def `(s) #`
s
end
end
}
def assert_syntax_files(test)
srcdir = File.expand_path("../../..", __FILE__)
srcdir = File.join(srcdir, test)
assert_separately(%W[- #{srcdir}], __FILE__, __LINE__, <<-'eom', timeout: Float::INFINITY)
dir = ARGV.shift
for script in Dir["#{dir}/**/*.rb"].sort
assert_valid_syntax(IO::read(script), script)
end
eom
end
def test_syntax_lib; assert_syntax_files("lib"); end
def test_syntax_sample; assert_syntax_files("sample"); end
def test_syntax_ext; assert_syntax_files("ext"); end
def test_syntax_test; assert_syntax_files("test"); end
def test_defined_empty_argument
bug8220 = '[ruby-core:53999] [Bug #8220]'
assert_ruby_status(%w[--disable-gem], 'puts defined? ()', bug8220)
end
def test_must_ascii_compatible
require 'tempfile'
f = Tempfile.new("must_ac_")
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-")
assert_nothing_raised(ArgumentError, enc.name) {load(f.path)}
end
Encoding.list.each do |enc|
next if enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-")
assert_raise(ArgumentError, enc.name) {load(f.path)}
end
ensure
f&.close!
end
def test_script_lines
require 'tempfile'
f = Tempfile.new("bug4361_")
bug4361 = '[ruby-dev:43168]'
with_script_lines do |debug_lines|
Encoding.list.each do |enc|
next unless enc.ascii_compatible?
make_tmpsrc(f, "# -*- coding: #{enc.name} -*-\n#----------------")
load(f.path)
assert_equal([f.path], debug_lines.keys)
assert_equal([enc, enc], debug_lines[f.path].map(&:encoding), bug4361)
end
end
ensure
f&.close!
end
def test_script_lines_encoding
require 'tmpdir'
Dir.mktmpdir do |dir|
File.write(File.join(dir, "script_lines.rb"), "SCRIPT_LINES__ = {}\n")
assert_in_out_err(%w"-r./script_lines -w -Ke", "puts __ENCODING__.name",
%w"EUC-JP", /-K is specified/, chdir: dir)
end
end
def test_anonymous_block_forwarding
assert_syntax_error("def b; c(&); end", /no anonymous block parameter/)
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
def b(&); c(&) end
def c(&); yield 1 end
a = nil
b{|c| a = c}
assert_equal(1, a)
def inner
yield
end
def block_only(&)
inner(&)
end
assert_equal(1, block_only{1})
def pos(arg1, &)
inner(&)
end
assert_equal(2, pos(nil){2})
def pos_kwrest(arg1, **kw, &)
inner(&)
end
assert_equal(3, pos_kwrest(nil){3})
def no_kw(arg1, **nil, &)
inner(&)
end
assert_equal(4, no_kw(nil){4})
def rest_kw(*a, kwarg: 1, &)
inner(&)
end
assert_equal(5, rest_kw{5})
def kw(kwarg:1, &)
inner(&)
end
assert_equal(6, kw{6})
def pos_kw_kwrest(arg1, kwarg:1, **kw, &)
inner(&)
end
assert_equal(7, pos_kw_kwrest(nil){7})
def pos_rkw(arg1, kwarg1:, &)
inner(&)
end
assert_equal(8, pos_rkw(nil, kwarg1: nil){8})
def all(arg1, arg2, *rest, post1, post2, kw1: 1, kw2: 2, okw1:, okw2:, &)
inner(&)
end
assert_equal(9, all(nil, nil, nil, nil, okw1: nil, okw2: nil){9})
def all_kwrest(arg1, arg2, *rest, post1, post2, kw1: 1, kw2: 2, okw1:, okw2:, **kw, &)
inner(&)
end
assert_equal(10, all_kwrest(nil, nil, nil, nil, okw1: nil, okw2: nil){10})
end;
end
def test_anonymous_rest_forwarding
assert_syntax_error("def b; c(*); end", /no anonymous rest parameter/)
assert_syntax_error("def b; c(1, *); end", /no anonymous rest parameter/)
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
def b(*); c(*) end
def c(*a); a end
def d(*); b(*, *) end
assert_equal([1, 2], b(1, 2))
assert_equal([1, 2, 1, 2], d(1, 2))
end;
end
def test_anonymous_keyword_rest_forwarding
assert_syntax_error("def b; c(**); end", /no anonymous keyword rest parameter/)
assert_syntax_error("def b; c(k: 1, **); end", /no anonymous keyword rest parameter/)
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
def b(**); c(**) end
def c(**kw); kw end
def d(**); b(k: 1, **) end
def e(**); b(**, k: 1) end
def f(a: nil, **); b(**) end
assert_equal({a: 1, k: 3}, b(a: 1, k: 3))
assert_equal({a: 1, k: 3}, d(a: 1, k: 3))
assert_equal({a: 1, k: 1}, e(a: 1, k: 3))
assert_equal({k: 3}, f(a: 1, k: 3))
end;
end
def test_argument_forwarding_with_anon_rest_kwrest_and_block
assert_syntax_error("def f(*, **, &); g(...); end", /unexpected \.\.\./)
assert_syntax_error("def f(...); g(*); end", /no anonymous rest parameter/)
assert_syntax_error("def f(...); g(0, *); end", /no anonymous rest parameter/)
assert_syntax_error("def f(...); g(**); end", /no anonymous keyword rest parameter/)
assert_syntax_error("def f(...); g(x: 1, **); end", /no anonymous keyword rest parameter/)
end
def test_newline_in_block_parameters
bug = '[ruby-dev:45292]'
["", "a", "a, b"].product(["", ";x", [";", "x"]]) do |params|
params = ["|", *params, "|"].join("\n")
assert_valid_syntax("1.times{#{params}}", __FILE__, "#{bug} #{params.inspect}")
end
end
tap do |_,
bug6115 = '[ruby-dev:45308]',
blockcall = '["elem"].each_with_object [] do end',
methods = [['map', 'no'], ['inject([])', 'with']],
blocks = [['do end', 'do'], ['{}', 'brace']],
*|
[%w'. dot', %w':: colon'].product(methods, blocks) do |(c, n1), (m, n2), (b, n3)|
m = m.tr_s('()', ' ').strip if n2 == 'do'
name = "test_#{n3}_block_after_blockcall_#{n1}_#{n2}_arg"
code = "#{blockcall}#{c}#{m} #{b}"
define_method(name) {assert_valid_syntax(code, bug6115)}
end
end
def test_do_block_in_cmdarg
bug9726 = '[ruby-core:61950] [Bug #9726]'
assert_valid_syntax("tap (proc do end)", __FILE__, bug9726)
end
def test_hash_kwsplat_hash
kw = {}
h = {a: 1}
assert_equal({}, {**{}})
assert_equal({}, {**kw})
assert_equal(h, {**h})
assert_equal(false, {**{}}.frozen?)
assert_equal(false, {**kw}.equal?(kw))
assert_equal(false, {**h}.equal?(h))
end
def test_array_kwsplat_hash
kw = {}
h = {a: 1}
assert_equal([], [**{}])
assert_equal([], [**kw])
assert_equal([h], [**h])
assert_equal([{}], [{}])
assert_equal([kw], [kw])
assert_equal([h], [h])
assert_equal([1], [1, **{}])
assert_equal([1], [1, **kw])
assert_equal([1, h], [1, **h])
assert_equal([1, {}], [1, {}])
assert_equal([1, kw], [1, kw])
assert_equal([1, h], [1, h])
assert_equal([], [**kw, **kw])
assert_equal([], [**kw, **{}, **kw])
assert_equal([1], [1, **kw, **{}, **kw])
assert_equal([{}], [{}, **kw, **kw])
assert_equal([kw], [kw, **kw, **kw])
assert_equal([h], [h, **kw, **kw])
assert_equal([h, h], [h, **kw, **kw, **h])
assert_equal([h, {:a=>2}], [h, **{}, **h, a: 2])
assert_equal([h, h], [h, **{}, a: 2, **h])
assert_equal([h, h], [h, a: 2, **{}, **h])
assert_equal([h, h], [h, a: 2, **h, **{}])
assert_equal([h, {:a=>2}], [h, **h, a: 2, **{}])
assert_equal([h, {:a=>2}], [h, **h, **{}, a: 2])
end
def test_normal_argument
assert_valid_syntax('def foo(x) end')
assert_syntax_error('def foo(X) end', /constant/)
assert_syntax_error('def foo(@x) end', /instance variable/)
assert_syntax_error('def foo(@@x) end', /class variable/)
end
def test_optional_argument
assert_valid_syntax('def foo(x=nil) end')
assert_syntax_error('def foo(X=nil) end', /constant/)
assert_syntax_error('def foo(@x=nil) end', /instance variable/)
assert_syntax_error('def foo(@@x=nil) end', /class variable/)
end
def test_keyword_rest
bug5989 = '[ruby-core:42455]'
assert_valid_syntax("def kwrest_test(**a) a; end", __FILE__, bug5989)
assert_valid_syntax("def kwrest_test2(**a, &b) end", __FILE__, bug5989)
o = Object.new
def o.kw(**a) a end
assert_equal({}, o.kw, bug5989)
assert_equal({foo: 1}, o.kw(foo: 1), bug5989)
assert_equal({foo: 1, bar: 2}, o.kw(foo: 1, bar: 2), bug5989)
EnvUtil.under_gc_stress do
eval("def o.m(k: 0) k end")
end
assert_equal(42, o.m(k: 42), '[ruby-core:45744]')
bug7922 = '[ruby-core:52744] [Bug #7922]'
def o.bug7922(**) end
assert_nothing_raised(ArgumentError, bug7922) {o.bug7922(foo: 42)}
end
class KW2
def kw(k1: 1, k2: 2) [k1, k2] end
end
def test_keyword_splat
assert_valid_syntax("foo(**h)", __FILE__)
o = KW2.new
h = {k1: 11, k2: 12}
assert_equal([11, 12], o.kw(**h))
assert_equal([11, 12], o.kw(k2: 22, **h))
assert_equal([11, 22], o.kw(**h, **{k2: 22}))
assert_equal([11, 12], o.kw(**{k2: 22}, **h))
end
def test_keyword_duplicated_splat
bug10315 = '[ruby-core:65368] [Bug #10315]'
o = KW2.new
assert_equal([23, 2], o.kw(**{k1: 22}, **{k1: 23}), bug10315)
h = {k3: 31}
assert_raise(ArgumentError) {o.kw(**h)}
h = {"k1"=>11, k2: 12}
assert_raise(ArgumentError) {o.kw(**h)}
end
def test_keyword_duplicated
bug10315 = '[ruby-core:65625] [Bug #10315]'
a = []
def a.add(x) push(x); x; end
b = a.clone
def a.f(k:, **) k; end
def b.f(k:) k; end
a.clear
r = nil
assert_warn(/duplicated/) {r = eval("b.f(k: b.add(1), k: b.add(2))")}
assert_equal(2, r)
assert_equal([1, 2], b, bug10315)
b.clear
r = nil
assert_warn(/duplicated/) {r = eval("a.f(k: a.add(1), j: a.add(2), k: a.add(3), k: a.add(4))")}
assert_equal(4, r)
assert_equal([1, 2, 3, 4], a)
a.clear
r = nil
assert_warn(/duplicated/) {r = eval("b.f(**{k: b.add(1), k: b.add(2)})")}
assert_equal(2, r)
assert_equal([1, 2], b, bug10315)
b.clear
r = nil
assert_warn(/duplicated/) {r = eval("a.f(**{k: a.add(1), j: a.add(2), k: a.add(3), k: a.add(4)})")}
assert_equal(4, r)
assert_equal([1, 2, 3, 4], a)
a.clear
r = nil
_z = {}
assert_warn(/duplicated/) {r = eval("a.f(k: a.add(1), **_z, k: a.add(2))")}
assert_equal(2, r)
assert_equal([1, 2], a)
end
def test_keyword_empty_splat
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
bug10719 = '[ruby-core:67446] [Bug #10719]'
assert_valid_syntax("foo(a: 1, **{})", bug10719)
end;
assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
bug13756 = '[ruby-core:82113] [Bug #13756]'
assert_valid_syntax("defined? foo(**{})", bug13756)
end;
assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
begin;
bug15271 = '[ruby-core:89648] [Bug #15271]'
assert_valid_syntax("a **{}", bug15271)
end;
end
def test_keyword_self_reference
message = /circular argument reference - var/
assert_syntax_error("def foo(var: defined?(var)) var end", message)
assert_syntax_error("def foo(var: var) var end", message)
assert_syntax_error("def foo(var: bar(var)) var end", message)
assert_syntax_error("def foo(var: bar {var}) var end", message)
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var: bar {|var| var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var: bar {| | var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var: bar {|| var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var: def bar(var) var; end) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("proc {|var: 1| var}")
end
end
def test_keyword_invalid_name
bug11663 = '[ruby-core:71356] [Bug #11663]'
assert_syntax_error('def foo(arg1?:) end', /arg1\?/, bug11663)
assert_syntax_error('def foo(arg1?:, arg2:) end', /arg1\?/, bug11663)
assert_syntax_error('proc {|arg1?:|}', /arg1\?/, bug11663)
assert_syntax_error('proc {|arg1?:, arg2:|}', /arg1\?/, bug11663)
bug10545 = '[ruby-dev:48742] [Bug #10545]'
assert_syntax_error('def foo(FOO: a) end', /constant/, bug10545)
assert_syntax_error('def foo(@foo: a) end', /instance variable/)
assert_syntax_error('def foo(@@foo: a) end', /class variable/)
end
def test_keywords_specified_and_not_accepted
assert_syntax_error('def foo(a:, **nil) end', /unexpected/)
assert_syntax_error('def foo(a:, **nil, &b) end', /unexpected/)
assert_syntax_error('def foo(**a, **nil) end', /unexpected/)
assert_syntax_error('def foo(**a, **nil, &b) end', /unexpected/)
assert_syntax_error('def foo(**nil, **a) end', /unexpected/)
assert_syntax_error('def foo(**nil, **a, &b) end', /unexpected/)
assert_syntax_error('proc do |a:, **nil| end', /unexpected/)
assert_syntax_error('proc do |a:, **nil, &b| end', /unexpected/)
assert_syntax_error('proc do |**a, **nil| end', /unexpected/)
assert_syntax_error('proc do |**a, **nil, &b| end', /unexpected/)
assert_syntax_error('proc do |**nil, **a| end', /unexpected/)
assert_syntax_error('proc do |**nil, **a, &b| end', /unexpected/)
end
def test_optional_self_reference
message = /circular argument reference - var/
assert_syntax_error("def foo(var = defined?(var)) var end", message)
assert_syntax_error("def foo(var = var) var end", message)
assert_syntax_error("def foo(var = bar(var)) var end", message)
assert_syntax_error("def foo(var = bar {var}) var end", message)
assert_syntax_error("def foo(var = (def bar;end; var)) var end", message)
assert_syntax_error("def foo(var = (def self.bar;end; var)) var end", message)
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var = bar {|var| var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var = bar {| | var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var = bar {|| var}) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("def foo(var = def bar(var) var; end) var end")
end
o = Object.new
assert_warn("") do
o.instance_eval("proc {|var = 1| var}")
end
end
def test_warn_grouped_expression
bug5214 = '[ruby-core:39050]'
assert_warning("", bug5214) do
assert_valid_syntax("foo \\\n(\n true)", "test", verbose: true)
end
end
def test_warn_unreachable
assert_warning("test:3: warning: statement not reached\n") do
code = "loop do\n" "break\n" "foo\n" "end"
assert_valid_syntax(code, "test", verbose: true)
end
end
def test_warn_balanced
warning = <<WARN
test:1: warning: `%s' after local variable or literal is interpreted as binary operator
test:1: warning: even though it seems like %s
WARN
[
[:**, "argument prefix"],
[:*, "argument prefix"],
[:<<, "here document"],
[:&, "argument prefix"],
[:+, "unary operator"],
[:-, "unary operator"],
[:/, "regexp literal"],
[:%, "string literal"],
].each do |op, syn|
all_assertions do |a|
["puts 1 #{op}0", "puts :a #{op}0", "m = 1; puts m #{op}0"].each do |src|
a.for(src) do
assert_warning(warning % [op, syn], src) do
assert_valid_syntax(src, "test", verbose: true)
end
end
end
end
end
end
def test_cmd_symbol_after_keyword
bug6347 = '[ruby-dev:45563]'
assert_not_label(:foo, 'if true then not_label:foo end', bug6347)
assert_not_label(:foo, 'if false; else not_label:foo end', bug6347)
assert_not_label(:foo, 'begin not_label:foo end', bug6347)
assert_not_label(:foo, 'begin ensure not_label:foo end', bug6347)
end
def test_cmd_symbol_in_string
bug6347 = '[ruby-dev:45563]'
assert_not_label(:foo, '"#{not_label:foo}"', bug6347)
end
def test_cmd_symbol_singleton_class
bug6347 = '[ruby-dev:45563]'
@not_label = self
assert_not_label(:foo, 'class << not_label:foo; end', bug6347)
end
def test_cmd_symbol_superclass
bug6347 = '[ruby-dev:45563]'
@not_label = Object
assert_not_label(:foo, 'class Foo < not_label:foo; end', bug6347)
end
def test_no_label_with_percent
assert_syntax_error('{%"a": 1}', /unexpected ':'/)
assert_syntax_error("{%'a': 1}", /unexpected ':'/)
assert_syntax_error('{%Q"a": 1}', /unexpected ':'/)
assert_syntax_error("{%Q'a': 1}", /unexpected ':'/)
assert_syntax_error('{%q"a": 1}', /unexpected ':'/)
assert_syntax_error("{%q'a': 1}", /unexpected ':'/)
end
def test_block_after_cond
bug10653 = '[ruby-dev:48790] [Bug #10653]'
assert_valid_syntax("false ? raise {} : tap {}", bug10653)
assert_valid_syntax("false ? raise do end : tap do end", bug10653)
end
def test_paren_after_label
bug11456 = '[ruby-dev:49221] [Bug #11456]'
assert_valid_syntax("{foo: (1 rescue 0)}", bug11456)
assert_valid_syntax("{foo: /=/}", bug11456)
end
def test_percent_string_after_label
bug11812 = '[ruby-core:72084]'
assert_valid_syntax('{label:%w(*)}', bug11812)
assert_valid_syntax('{label: %w(*)}', bug11812)
end
def test_heredoc_after_label
bug11849 = '[ruby-core:72396] [Bug #11849]'
assert_valid_syntax("{label:<<DOC\n""DOC\n""}", bug11849)
assert_valid_syntax("{label:<<-DOC\n""DOC\n""}", bug11849)
assert_valid_syntax("{label:<<~DOC\n""DOC\n""}", bug11849)
assert_valid_syntax("{label: <<DOC\n""DOC\n""}", bug11849)
assert_valid_syntax("{label: <<-DOC\n""DOC\n""}", bug11849)
assert_valid_syntax("{label: <<~DOC\n""DOC\n""}", bug11849)
end
def test_cmdarg_kwarg_lvar_clashing_method
bug12073 = '[ruby-core:73816] [Bug#12073]'
a = a = 1
assert_valid_syntax("a b: 1")
assert_valid_syntax("a = 1; a b: 1", bug12073)
end
def test_duplicated_arg
assert_syntax_error("def foo(a, a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_, _) end")
(obj = Object.new).instance_eval("def foo(_, x, _) x end")
assert_equal(2, obj.foo(1, 2, 3))
end
def test_duplicated_rest
assert_syntax_error("def foo(a, *a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_, *_) end")
(obj = Object.new).instance_eval("def foo(_, x, *_) x end")
assert_equal(2, obj.foo(1, 2, 3))
end
def test_duplicated_opt
assert_syntax_error("def foo(a, a=1) end", /duplicated argument name/)
assert_valid_syntax("def foo(_, _=1) end")
(obj = Object.new).instance_eval("def foo(_, x, _=42) x end")
assert_equal(2, obj.foo(1, 2))
end
def test_duplicated_opt_rest
assert_syntax_error("def foo(a=1, *a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_=1, *_) end")
(obj = Object.new).instance_eval("def foo(_, x=42, *_) x end")
assert_equal(42, obj.foo(1))
assert_equal(2, obj.foo(1, 2))
end
def test_duplicated_rest_opt
assert_syntax_error("def foo(*a, a=1) end", /duplicated argument name/)
end
def test_duplicated_rest_post
assert_syntax_error("def foo(*a, a) end", /duplicated argument name/)
assert_valid_syntax("def foo(*_, _) end")
(obj = Object.new).instance_eval("def foo(*_, x, _) x end")
assert_equal(2, obj.foo(1, 2, 3))
assert_equal(2, obj.foo(2, 3))
(obj = Object.new).instance_eval("def foo(*_, _, x) x end")
assert_equal(3, obj.foo(1, 2, 3))
assert_equal(3, obj.foo(2, 3))
end
def test_duplicated_opt_post
assert_syntax_error("def foo(a=1, a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_=1, _) end")
(obj = Object.new).instance_eval("def foo(_=1, x, _) x end")
assert_equal(2, obj.foo(1, 2, 3))
assert_equal(2, obj.foo(2, 3))
(obj = Object.new).instance_eval("def foo(_=1, _, x) x end")
assert_equal(3, obj.foo(1, 2, 3))
assert_equal(3, obj.foo(2, 3))
end
def test_duplicated_kw
assert_syntax_error("def foo(a, a: 1) end", /duplicated argument name/)
assert_valid_syntax("def foo(_, _: 1) end")
(obj = Object.new).instance_eval("def foo(_, x, _: 1) x end")
assert_equal(3, obj.foo(2, 3))
assert_equal(3, obj.foo(2, 3, _: 42))
(obj = Object.new).instance_eval("def foo(x, _, _: 1) x end")
assert_equal(2, obj.foo(2, 3))
assert_equal(2, obj.foo(2, 3, _: 42))
end
def test_duplicated_rest_kw
assert_syntax_error("def foo(*a, a: 1) end", /duplicated argument name/)
assert_nothing_raised {def foo(*_, _: 1) end}
(obj = Object.new).instance_eval("def foo(*_, x: 42, _: 1) x end")
assert_equal(42, obj.foo(42))
assert_equal(42, obj.foo(2, _: 0))
assert_equal(2, obj.foo(x: 2, _: 0))
ensure
self.class.remove_method(:foo)
end
def test_duplicated_opt_kw
assert_syntax_error("def foo(a=1, a: 1) end", /duplicated argument name/)
assert_valid_syntax("def foo(_=1, _: 1) end")
(obj = Object.new).instance_eval("def foo(_=42, x, _: 1) x end")
assert_equal(0, obj.foo(0))
assert_equal(0, obj.foo(0, _: 3))
end
def test_duplicated_kw_kwrest
assert_syntax_error("def foo(a: 1, **a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_: 1, **_) end")
(obj = Object.new).instance_eval("def foo(_: 1, x: 42, **_) x end")
assert_equal(42, obj.foo())
assert_equal(42, obj.foo(a: 0))
assert_equal(42, obj.foo(_: 0, a: 0))
assert_equal(1, obj.foo(_: 0, x: 1, a: 0))
end
def test_duplicated_rest_kwrest
assert_syntax_error("def foo(*a, **a) end", /duplicated argument name/)
assert_valid_syntax("def foo(*_, **_) end")
(obj = Object.new).instance_eval("def foo(*_, x, **_) x end")
assert_equal(1, obj.foo(1))
assert_equal(1, obj.foo(1, a: 0))
assert_equal(2, obj.foo(1, 2, a: 0))
end
def test_duplicated_opt_kwrest
assert_syntax_error("def foo(a=1, **a) end", /duplicated argument name/)
assert_valid_syntax("def foo(_=1, **_) end")
(obj = Object.new).instance_eval("def foo(_=42, x, **_) x end")
assert_equal(1, obj.foo(1))
assert_equal(1, obj.foo(1, a: 0))
assert_equal(1, obj.foo(0, 1, a: 0))
end
def test_duplicated_when
w = 'warning: duplicated `when\' clause with line 3 is ignored'
assert_warning(/3: #{w}.+4: #{w}.+4: #{w}.+5: #{w}.+5: #{w}/m) {
eval %q{
case 1
when 1, 1
when 1, 1
when 1, 1
end
}
}
assert_warning(/#{w}/) {#/3: #{w}.+4: #{w}.+5: #{w}.+5: #{w}/m){
a = a = 1
eval %q{
case 1
when 1, 1
when 1, a
when 1, 1
end
}
}
end
def test_duplicated_when_check_option
w = /duplicated `when\' clause with line 3 is ignored/
assert_in_out_err(%[-wc], "#{<<~"begin;"}\n#{<<~'end;'}", ["Syntax OK"], w)
begin;
case 1
when 1
when 1
end
end;
end
def test_invalid_break
assert_syntax_error("def m; break; end", /Invalid break/)
assert_syntax_error('/#{break}/', /Invalid break/)
assert_syntax_error('/#{break}/o', /Invalid break/)
end
def test_invalid_next
assert_syntax_error("def m; next; end", /Invalid next/)
assert_syntax_error('/#{next}/', /Invalid next/)
assert_syntax_error('/#{next}/o', /Invalid next/)
end
def test_lambda_with_space
feature6390 = '[ruby-dev:45605]'
assert_valid_syntax("-> (x, y) {}", __FILE__, feature6390)
end
def test_do_block_in_cmdarg_begin
bug6419 = '[ruby-dev:45631]'
assert_valid_syntax("p begin 1.times do 1 end end", __FILE__, bug6419)
end
def test_do_block_in_call_args
bug9308 = '[ruby-core:59342] [Bug #9308]'
assert_valid_syntax("bar def foo; self.each do end end", bug9308)
end
def test_do_block_in_lambda
bug11107 = '[ruby-core:69017] [Bug #11107]'
assert_valid_syntax('p ->() do a() do end end', bug11107)
end
def test_do_block_after_lambda
bug11380 = '[ruby-core:70067] [Bug #11380]'
assert_valid_syntax('p -> { :hello }, a: 1 do end', bug11380)
assert_valid_syntax('->(opt = (foo.[] bar)) {}')
assert_valid_syntax('->(opt = (foo.[]= bar)) {}')
assert_valid_syntax('->(opt = (foo.[] bar)) do end')
assert_valid_syntax('->(opt = (foo.[]= bar)) do end')
end
def test_reserved_method_no_args
bug6403 = '[ruby-dev:45626]'
assert_valid_syntax("def self; :foo; end", __FILE__, bug6403)
end
def test_unassignable
gvar = global_variables
%w[self nil true false __FILE__ __LINE__ __ENCODING__].each do |kwd|
assert_syntax_error("#{kwd} = nil", /Can't .* #{kwd}$/)
assert_equal(gvar, global_variables)
end
end
Bug7559 = '[ruby-dev:46737]'
def test_lineno_command_call_quote
expected = __LINE__ + 1
actual = caller_lineno "a
b
c
d
e"
assert_equal(expected, actual, "#{Bug7559}: ")
end
def assert_dedented_heredoc(expect, result, mesg = "")
all_assertions(mesg) do |a|
%w[eos "eos" 'eos' `eos`].each do |eos|
a.for(eos) do
assert_equal(eval("<<-#{eos}\n#{expect}eos\n"),
eval("<<~#{eos}\n#{result}eos\n"))
end
end
end
end
def test_dedented_heredoc_without_indentation
result = " y\n" \
"z\n"
expect = result
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_indentation
result = " a\n" \
" b\n"
expect = " a\n" \
"b\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_blank_less_indented_line
# the blank line has two leading spaces
result = " a\n" \
" \n" \
" b\n"
expect = "a\n" \
"\n" \
"b\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_blank_less_indented_line_escaped
result = " a\n" \
"\\ \\ \n" \
" b\n"
expect = result
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_blank_more_indented_line
# the blank line has six leading spaces
result = " a\n" \
" \n" \
" b\n"
expect = "a\n" \
" \n" \
"b\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_blank_more_indented_line_escaped
result = " a\n" \
"\\ \\ \\ \\ \\ \\ \n" \
" b\n"
expect = result
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_empty_line
result = " This would contain specially formatted text.\n" \
"\n" \
" That might span many lines\n"
expect = 'This would contain specially formatted text.'"\n" \
''"\n" \
'That might span many lines'"\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_interpolated_expression
result = ' #{1}a'"\n" \
" zy\n"
expect = ' #{1}a'"\n" \
"zy\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_interpolated_string
w = w = ""
result = " \#{mesg} a\n" \
" zy\n"
expect = '#{mesg} a'"\n" \
' zy'"\n"
assert_dedented_heredoc(expect, result)
end
def test_dedented_heredoc_with_newline
bug11989 = '[ruby-core:72855] [Bug #11989] after escaped newline should not be dedented'
result = ' x\n'" y\n" \
" z\n"
expect = 'x\n'" y\n" \
"z\n"
assert_dedented_heredoc(expect, result, bug11989)
end
def test_dedented_heredoc_with_concatenation
bug11990 = '[ruby-core:72857] [Bug #11990] concatenated string should not be dedented'
%w[eos "eos" 'eos'].each do |eos|
assert_equal("x\n y",
eval("<<~#{eos} ' y'\n x\neos\n"),
"#{bug11990} with #{eos}")
end
%w[eos "eos" 'eos' `eos`].each do |eos|
_, expect = eval("[<<~#{eos}, ' x']\n"" y\n""eos\n")
assert_equal(' x', expect, bug11990)
end
end
def test_dedented_heredoc_expr_at_beginning
result = " a\n" \
'#{1}'"\n"
expected = " a\n" \
'#{1}'"\n"
assert_dedented_heredoc(expected, result)
end
def test_dedented_heredoc_expr_string
result = ' one#{" two "}'"\n"
expected = 'one#{" two "}'"\n"
assert_dedented_heredoc(expected, result)
end
def test_dedented_heredoc_continued_line
result = " 1\\\n" " 2\n"
expected = "1\\\n" "2\n"
assert_dedented_heredoc(expected, result)
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /can't find string "TEXT"/)
begin;
<<-TEXT
\
TEXT
end;
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /can't find string "TEXT"/)
begin;
<<~TEXT
\
TEXT
end;
assert_equal(" TEXT\n", eval("<<~eos\n" " \\\n" "TEXT\n" "eos\n"))
end
def test_lineno_after_heredoc
bug7559 = '[ruby-dev:46737]'
expected, _, actual = __LINE__, <<eom, __LINE__
a
b
c
d
eom
assert_equal(expected, actual, bug7559)
end
def test_dedented_heredoc_invalid_identifer
assert_syntax_error('<<~ "#{}"', /unexpected <</)
end
def test_dedented_heredoc_concatenation
assert_equal("\n0\n1", eval("<<~0 '1'\n \n0\#{}\n0"))
end
def test_heredoc_mixed_encoding
e = assert_syntax_error(<<-'HEREDOC', 'UTF-8 mixed within Windows-31J source')
#encoding: cp932
<<-TEXT
\xe9\x9d\u1234
TEXT
HEREDOC
assert_not_match(/end-of-input/, e.message)
e = assert_syntax_error(<<-'HEREDOC', 'UTF-8 mixed within Windows-31J source')
#encoding: cp932
<<-TEXT
\xe9\x9d
\u1234
TEXT
HEREDOC
assert_not_match(/end-of-input/, e.message)
e = assert_syntax_error(<<-'HEREDOC', 'UTF-8 mixed within Windows-31J source')
#encoding: cp932
<<-TEXT
\u1234\xe9\x9d
TEXT
HEREDOC
assert_not_match(/end-of-input/, e.message)
e = assert_syntax_error(<<-'HEREDOC', 'UTF-8 mixed within Windows-31J source')
#encoding: cp932
<<-TEXT
\u1234
\xe9\x9d
TEXT
HEREDOC
assert_not_match(/end-of-input/, e.message)
end
def test_lineno_operation_brace_block
expected = __LINE__ + 1
actual = caller_lineno\
{}
assert_equal(expected, actual)
end
def assert_constant_reassignment_nested(preset, op, expected, err = [], bug = '[Bug #5449]')
[
["p ", ""], # no-pop
["", "p Foo::Bar"], # pop
].each do |p1, p2|
src = <<~EOM