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test_parse.rb
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test_parse.rb
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# coding: US-ASCII
# frozen_string_literal: false
require 'test/unit'
require 'stringio'
class TestParse < Test::Unit::TestCase
def setup
@verbose = $VERBOSE
end
def teardown
$VERBOSE = @verbose
end
def test_error_line
assert_syntax_error('------,,', /\n\z/, 'Message to pipe should end with a newline')
assert_syntax_error("{hello\n world}", /hello/)
end
def test_else_without_rescue
assert_syntax_error(<<-END, %r":#{__LINE__+2}: else without rescue"o, [__FILE__, __LINE__+1])
begin
else
42
end
END
end
def test_alias_backref
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /can't make alias/) do
begin;
alias $foo $1
end;
end
end
def test_command_call
t = Object.new
def t.foo(x); x; end
a = false
b = c = d = true
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a &&= t.foo 42
b &&= t.foo 42
c &&= t.foo nil
d &&= t.foo false
END
end
assert_equal([false, 42, nil, false], [a, b, c, d])
a = 3
assert_nothing_raised { eval("a &= t.foo 5") }
assert_equal(1, a)
a = [nil, nil, true, true]
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a[0] ||= t.foo 42
a[1] &&= t.foo 42
a[2] ||= t.foo 42
a[3] &&= t.foo 42
END
end
assert_equal([42, nil, true, 42], a)
o = Object.new
class << o
attr_accessor :foo, :bar, :Foo, :Bar, :baz, :qux
end
o.foo = o.Foo = o::baz = nil
o.bar = o.Bar = o::qux = 1
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
o.foo ||= t.foo 42
o.bar &&= t.foo 42
o.Foo ||= t.foo 42
o.Bar &&= t.foo 42
o::baz ||= t.foo 42
o::qux &&= t.foo 42
END
end
assert_equal([42, 42], [o.foo, o.bar])
assert_equal([42, 42], [o.Foo, o.Bar])
assert_equal([42, 42], [o::baz, o::qux])
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /Can't set variable/) do
begin;
$1 ||= t.foo 42
end;
end
def t.bar(x); x + yield; end
a = b = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = t.bar "foo" do
"bar"
end.gsub "ob", "OB"
b = t.bar "foo" do
"bar"
end::gsub "ob", "OB"
END
end
assert_equal("foOBar", a)
assert_equal("foOBar", b)
a = nil
assert_nothing_raised do
t.instance_eval <<-END, __FILE__, __LINE__+1
a = bar "foo" do "bar" end
END
end
assert_equal("foobar", a)
a = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = t::bar "foo" do "bar" end
END
end
assert_equal("foobar", a)
def t.baz(*r)
@baz = r + (block_given? ? [yield] : [])
end
assert_nothing_raised do
t.instance_eval "baz (1), 2"
end
assert_equal([1, 2], t.instance_eval { @baz })
end
def test_mlhs_node
c = Class.new
class << c
attr_accessor :foo, :bar, :Foo, :Bar
FOO = BAR = nil
end
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
c::foo, c::bar = 1, 2
c.Foo, c.Bar = 1, 2
c::FOO, c::BAR = 1, 2
END
end
assert_equal([1, 2], [c::foo, c::bar])
assert_equal([1, 2], [c.Foo, c.Bar])
assert_equal([1, 2], [c::FOO, c::BAR])
end
def test_dynamic_constant_assignment
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /dynamic constant/) do
begin;
def foo
self::FOO, self::BAR = 1, 2
::FOO, ::BAR = 1, 2
end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /Can't set variable/) do
begin;
$1, $2 = 1, 2
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /dynamic constant/) do
begin;
def foo
::FOO = 1
end
end;
end
c = Class.new
c.freeze
assert_valid_syntax("#{<<~"begin;"}\n#{<<~'end;'}") do
begin;
c::FOO &= 1
::FOO &= 1
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /Can't set variable/) do
begin;
$1 &= 1
end;
end
end
def test_class_module
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /must be CONSTANT/) do
begin;
class foo; end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /in method body/) do
begin;
def foo
class Foo; end
module Bar; end
end
end;
end
assert_valid_syntax("#{<<~"begin;"}\n#{<<~'end;'}") do
begin;
class Foo 1; end
end;
end
end
def test_op_name
o = Object.new
def o.>(x); x; end
def o./(x); x; end
assert_nothing_raised do
o.instance_eval <<-END, __FILE__, __LINE__+1
undef >, /
END
end
end
def test_arg
o = Object.new
class << o
attr_accessor :foo, :bar, :Foo, :Bar, :baz, :qux
end
o.foo = o.Foo = o::baz = nil
o.bar = o.Bar = o::qux = 1
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
o.foo ||= 42
o.bar &&= 42
o.Foo ||= 42
o.Bar &&= 42
o::baz ||= 42
o::qux &&= 42
END
end
assert_equal([42, 42], [o.foo, o.bar])
assert_equal([42, 42], [o.Foo, o.Bar])
assert_equal([42, 42], [o::baz, o::qux])
a = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = -2.0 ** 2
END
end
assert_equal(-4.0, a)
end
def test_block_variable
o = Object.new
def o.foo(*r); yield(*r); end
a = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
o.foo 1 do|; a| a = 42 end
END
end
assert_nil(a)
end
def test_bad_arg
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /cannot be a constant/) do
begin;
def foo(FOO); end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /cannot be an instance variable/) do
begin;
def foo(@foo); end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /cannot be a global variable/) do
begin;
def foo($foo); end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /cannot be a class variable/) do
begin;
def foo(@@foo); end
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /cannot be an instance variable/) do
begin;
o.foo {|; @a| @a = 42 }
end;
end
end
def test_do_lambda
a = b = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = -> do
b = 42
end
END
end
a.call
assert_equal(42, b)
end
def test_block_call_colon2
o = Object.new
def o.foo(x); x + yield; end
a = b = nil
assert_nothing_raised do
o.instance_eval <<-END, __FILE__, __LINE__+1
a = foo 1 do 42 end.to_s
b = foo 1 do 42 end::to_s
END
end
assert_equal("43", a)
assert_equal("43", b)
end
def test_call_method
a = b = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = proc {|x| x + "bar" }.("foo")
b = proc {|x| x + "bar" }::("foo")
END
end
assert_equal("foobar", a)
assert_equal("foobar", b)
end
def test_xstring
assert_raise(Errno::ENOENT) do
eval("``")
end
end
def test_words
assert_equal([], %W( ))
assert_syntax_error('%w[abc', /unterminated list/)
end
def test_dstr
@@foo = 1
assert_equal("foo 1 bar", "foo #@@foo bar")
"1" =~ /(.)/
assert_equal("foo 1 bar", "foo #$1 bar")
assert_equal('foo #@1 bar', eval('"foo #@1 bar"'))
end
def test_dstr_disallowed_variable
bug8375 = '[ruby-core:54885] [Bug #8375]'
%w[@ @. @@ @@1 @@. $ $%].each do |src|
src = '#'+src+' '
str = assert_nothing_raised(SyntaxError, "#{bug8375} #{src.dump}") do
break eval('"'+src+'"')
end
assert_equal(src, str, bug8375)
end
end
def test_dsym
assert_nothing_raised { eval(':""') }
end
def assert_disallowed_variable(type, noname, invalid)
noname.each do |name|
assert_syntax_error("proc{a = #{name} }", "'#{noname[0]}' without identifiers is not allowed as #{type} variable name")
end
invalid.each do |name|
assert_syntax_error("proc {a = #{name} }", "'#{name}' is not allowed as #{type} variable name")
end
end
def test_disallowed_instance_variable
assert_disallowed_variable("an instance", %w[@ @.], %w[])
end
def test_disallowed_class_variable
assert_disallowed_variable("a class", %w[@@ @@.], %w[@@1])
end
def test_disallowed_gloal_variable
assert_disallowed_variable("a global", %w[$], %w[$%])
end
def test_arg2
o = Object.new
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
def o.foo(a=42,*r,z,&b); b.call(r.inject(a*1000+z*100, :+)); end
END
end
assert_equal(-1405, o.foo(1,2,3,4) {|x| -x })
assert_equal(-1302, o.foo(1,2,3) {|x| -x })
assert_equal(-1200, o.foo(1,2) {|x| -x })
assert_equal(-42100, o.foo(1) {|x| -x })
assert_raise(ArgumentError) { o.foo() }
o = Object.new
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
def o.foo(a=42,z,&b); b.call(a*1000+z*100); end
END
end
assert_equal(-1200, o.foo(1,2) {|x| -x } )
assert_equal(-42100, o.foo(1) {|x| -x } )
assert_raise(ArgumentError) { o.foo() }
o = Object.new
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
def o.foo(*r,z,&b); b.call(r.inject(z*100, :+)); end
END
end
assert_equal(-303, o.foo(1,2,3) {|x| -x } )
assert_equal(-201, o.foo(1,2) {|x| -x } )
assert_equal(-100, o.foo(1) {|x| -x } )
assert_raise(ArgumentError) { o.foo() }
end
def test_duplicate_argument
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", '') do
begin;
1.times {|&b?| }
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /duplicated argument/) do
begin;
1.times {|a, a|}
end;
end
assert_syntax_error("#{<<~"begin;"}\n#{<<~'end;'}", /duplicated argument/) do
begin;
def foo(a, a); end
end;
end
end
def test_define_singleton_error
msg = /singleton method for literals/
assert_parse_error(%q[def ("foo").foo; end], msg)
assert_parse_error(%q[def (1).foo; end], msg)
assert_parse_error(%q[def ((1;1)).foo; end], msg)
assert_parse_error(%q[def ((;1)).foo; end], msg)
assert_parse_error(%q[def ((1+1;1)).foo; end], msg)
assert_parse_error(%q[def ((%s();1)).foo; end], msg)
assert_parse_error(%q[def ((%w();1)).foo; end], msg)
assert_parse_error(%q[def ("#{42}").foo; end], msg)
assert_parse_error(%q[def (:"#{42}").foo; end], msg)
end
def test_flip_flop
all_assertions_foreach(nil,
['(cond1..cond2)', true],
['((cond1..cond2))', true],
# '(;;;cond1..cond2)', # don't care
'(1; cond1..cond2)',
'(%s(); cond1..cond2)',
'(%w(); cond1..cond2)',
'(1; (2; (3; 4; cond1..cond2)))',
'(1+1; cond1..cond2)',
) do |code, pass|
code = code.sub("cond1", "n==4").sub("cond2", "n==5")
if pass
assert_equal([4,5], eval("(1..9).select {|n| true if #{code}}"))
else
assert_raise_with_message(ArgumentError, /bad value for range/, code) {
verbose_bak, $VERBOSE = $VERBOSE, nil # disable "warning: possibly useless use of a literal in void context"
begin
eval("[4].each {|n| true if #{code}}")
ensure
$VERBOSE = verbose_bak
end
}
end
end
end
def test_op_asgn1_with_block
t = Object.new
a = []
blk = proc {|x| a << x }
def t.[](_)
yield(:aref)
nil
end
def t.[]=(_, _)
yield(:aset)
end
def t.dummy(_)
end
eval <<-END, nil, __FILE__, __LINE__+1
t[42, &blk] ||= 42
END
assert_equal([:aref, :aset], a)
a.clear
eval <<-END, nil, __FILE__, __LINE__+1
t[42, &blk] ||= t.dummy 42 # command_asgn test
END
assert_equal([:aref, :aset], a)
blk
end
def test_backquote
t = Object.new
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
def t.`(x); "foo" + x + "bar"; end
END
end
a = b = c = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
a = t.` "zzz"
1.times {|;z| t.` ("zzz") }
END
t.instance_eval <<-END, __FILE__, __LINE__+1
b = `zzz`
c = %x(ccc)
END
end
assert_equal("foozzzbar", a)
assert_equal("foozzzbar", b)
assert_equal("foocccbar", c)
end
def test_carrige_return
assert_equal(2, eval("1 +\r\n1"))
end
def test_string
mesg = 'from the backslash through the invalid char'
e = assert_syntax_error('"\xg1"', /hex escape/)
assert_equal(' ^~'"\n", e.message.lines.last, mesg)
e = assert_syntax_error('"\u{1234"', 'unterminated Unicode escape')
assert_equal(' ^'"\n", e.message.lines.last, mesg)
e = assert_syntax_error('"\u{xxxx}"', 'invalid Unicode escape')
assert_equal(' ^'"\n", e.message.lines.last, mesg)
e = assert_syntax_error('"\u{xxxx', 'Unicode escape')
assert_pattern_list([
/.*: invalid Unicode escape\n.*\n/,
/ \^/,
/\n/,
/.*: unterminated Unicode escape\n.*\n/,
/ \^/,
/\n/,
/.*: unterminated string.*\n.*\n/,
/ \^\n/,
], e.message)
e = assert_syntax_error('"\M1"', /escape character syntax/)
assert_equal(' ^~~'"\n", e.message.lines.last, mesg)
e = assert_syntax_error('"\C1"', /escape character syntax/)
assert_equal(' ^~~'"\n", e.message.lines.last, mesg)
src = '"\xD0\u{90'"\n""000000000000000000000000"
assert_syntax_error(src, /:#{__LINE__}: unterminated/o)
assert_syntax_error('"\u{100000000}"', /invalid Unicode escape/)
assert_equal("", eval('"\u{}"'))
assert_equal("", eval('"\u{ }"'))
assert_equal("\x81", eval('"\C-\M-a"'))
assert_equal("\177", eval('"\c?"'))
assert_warning(/use \\C-\\s/) {assert_equal("\x00", eval('"\C- "'))}
assert_warning(/use \\M-\\s/) {assert_equal("\xa0", eval('"\M- "'))}
assert_warning(/use \\M-\\C-\\s/) {assert_equal("\x80", eval('"\M-\C- "'))}
assert_warning(/use \\C-\\M-\\s/) {assert_equal("\x80", eval('"\C-\M- "'))}
assert_warning(/use \\t/) {assert_equal("\x09", eval("\"\\C-\t\""))}
assert_warning(/use \\M-\\t/) {assert_equal("\x89", eval("\"\\M-\t\""))}
assert_warning(/use \\M-\\t/) {assert_equal("\x89", eval("\"\\M-\\C-\t\""))}
assert_warning(/use \\M-\\t/) {assert_equal("\x89", eval("\"\\C-\\M-\t\""))}
assert_syntax_error("\"\\C-\x01\"", 'Invalid escape character syntax')
assert_syntax_error("\"\\M-\x01\"", 'Invalid escape character syntax')
assert_syntax_error("\"\\M-\\C-\x01\"", 'Invalid escape character syntax')
assert_syntax_error("\"\\C-\\M-\x01\"", 'Invalid escape character syntax')
e = assert_syntax_error('"\c\u0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~'"\n", e.message.lines.last)
e = assert_syntax_error('"\c\U0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~'"\n", e.message.lines.last)
e = assert_syntax_error('"\C-\u0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~~'"\n", e.message.lines.last)
e = assert_syntax_error('"\C-\U0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~~'"\n", e.message.lines.last)
e = assert_syntax_error('"\M-\u0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~~'"\n", e.message.lines.last)
e = assert_syntax_error('"\M-\U0000"', 'Invalid escape character syntax')
assert_equal(' ^~~~~'"\n", e.message.lines.last)
e = assert_syntax_error(%["\\C-\u3042"], 'Invalid escape character syntax')
assert_match(/^\s \^(?# \\ ) ~(?# C ) ~(?# - ) ~+(?# U+3042 )$/x, e.message.lines.last)
assert_not_include(e.message, "invalid multibyte char")
end
def test_question
assert_syntax_error('?', /incomplete/)
assert_syntax_error('? ', /unexpected/)
assert_syntax_error("?\n", /unexpected/)
assert_syntax_error("?\t", /unexpected/)
assert_syntax_error("?\v", /unexpected/)
assert_syntax_error("?\r", /unexpected/)
assert_syntax_error("?\f", /unexpected/)
assert_syntax_error(" ?a\x8a".force_encoding("utf-8"), /invalid multibyte/)
assert_equal("\u{1234}", eval("?\u{1234}"))
assert_equal("\u{1234}", eval('?\u{1234}'))
assert_equal("\u{1234}", eval('?\u1234'))
assert_syntax_error('?\u{41 42}', 'Multiple codepoints at single character literal')
e = assert_syntax_error('"#{?\u123}"', 'invalid Unicode escape')
assert_not_match(/end-of-input/, e.message)
assert_warning(/use ?\\C-\\s/) {assert_equal("\x00", eval('?\C- '))}
assert_warning(/use ?\\M-\\s/) {assert_equal("\xa0", eval('?\M- '))}
assert_warning(/use ?\\M-\\C-\\s/) {assert_equal("\x80", eval('?\M-\C- '))}
assert_warning(/use ?\\C-\\M-\\s/) {assert_equal("\x80", eval('?\C-\M- '))}
assert_warning(/use ?\\t/) {assert_equal("\x09", eval("?\\C-\t"))}
assert_warning(/use ?\\M-\\t/) {assert_equal("\x89", eval("?\\M-\t"))}
assert_warning(/use ?\\M-\\t/) {assert_equal("\x89", eval("?\\M-\\C-\t"))}
assert_warning(/use ?\\M-\\t/) {assert_equal("\x89", eval("?\\C-\\M-\t"))}
assert_syntax_error("?\\C-\x01", 'Invalid escape character syntax')
assert_syntax_error("?\\M-\x01", 'Invalid escape character syntax')
assert_syntax_error("?\\M-\\C-\x01", 'Invalid escape character syntax')
assert_syntax_error("?\\C-\\M-\x01", 'Invalid escape character syntax')
assert_equal("\xff", eval("# encoding: ascii-8bit\n""?\\\xFF"))
end
def test_percent
assert_equal(:foo, eval('%s(foo)'))
assert_syntax_error('%s', /unterminated quoted string/)
assert_syntax_error('%ss', /unknown type/)
assert_syntax_error('%z()', /unknown type/)
assert_syntax_error("%\u3042", /unknown type/)
assert_syntax_error("%q\u3042", /unknown type/)
assert_syntax_error("%", /unterminated quoted string/)
end
def test_symbol
bug = '[ruby-dev:41447]'
sym = "foo\0bar".to_sym
assert_nothing_raised(SyntaxError, bug) do
assert_equal(sym, eval(":'foo\0bar'"))
end
assert_nothing_raised(SyntaxError, bug) do
assert_equal(sym, eval(':"foo\u0000bar"'))
end
assert_nothing_raised(SyntaxError, bug) do
assert_equal(sym, eval(':"foo\u{0}bar"'))
end
assert_nothing_raised(SyntaxError) do
assert_equal(:foobar, eval(':"foo\u{}bar"'))
assert_equal(:foobar, eval(':"foo\u{ }bar"'))
end
assert_syntax_error(':@@', /is not allowed/)
assert_syntax_error(':@@1', /is not allowed/)
assert_syntax_error(':@', /is not allowed/)
assert_syntax_error(':@1', /is not allowed/)
assert_syntax_error(':$01234', /is not allowed/)
end
def test_parse_string
assert_syntax_error("/\n", /unterminated/)
end
def test_here_document
x = nil
assert_syntax_error("<\<FOO\n", /can't find string "FOO"/)
assert_nothing_raised(SyntaxError) do
x = eval %q(
<<FOO
#$
FOO
)
end
assert_equal "\#$\n", x
assert_syntax_error("<\<\"\n", /unterminated here document identifier/)
assert_syntax_error("<<``\n", /can't find string ""/)
assert_syntax_error("<<--\n", /unexpected <</)
assert_nothing_raised(SyntaxError) do
x = eval %q(
<<FOO
#$
foo
FOO
)
end
assert_equal "\#$\nfoo\n", x
assert_nothing_raised do
eval "x = <<""FOO\r\n1\r\nFOO"
end
assert_equal("1\n", x)
assert_nothing_raised do
x = eval "<<' FOO'\n""[Bug #19539]\n"" FOO\n"
end
assert_equal("[Bug #19539]\n", x)
assert_nothing_raised do
x = eval "<<-' FOO'\n""[Bug #19539]\n"" FOO\n"
end
assert_equal("[Bug #19539]\n", x)
end
def test_magic_comment
x = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
# coding: utf-8
x = __ENCODING__
END
end
assert_equal(Encoding.find("UTF-8"), x)
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
# coding = utf-8
x = __ENCODING__
END
end
assert_equal(Encoding.find("UTF-8"), x)
assert_raise(ArgumentError) do
eval <<-END, nil, __FILE__, __LINE__+1
# coding = foobarbazquxquux_dummy_enconding
x = __ENCODING__
END
end
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
# xxxx : coding sjis
x = __ENCODING__
END
end
assert_equal(__ENCODING__, x)
assert_raise(ArgumentError) do
EnvUtil.with_default_external(Encoding::US_ASCII) {eval <<-END, nil, __FILE__, __LINE__+1}
# coding = external
x = __ENCODING__
END
end
assert_raise(ArgumentError) do
EnvUtil.with_default_internal(Encoding::US_ASCII) {eval <<-END, nil, __FILE__, __LINE__+1}
# coding = internal
x = __ENCODING__
END
end
assert_raise(ArgumentError) do
eval <<-END, nil, __FILE__, __LINE__+1
# coding = filesystem
x = __ENCODING__
END
end
assert_raise(ArgumentError) do
eval <<-END, nil, __FILE__, __LINE__+1
# coding = locale
x = __ENCODING__
END
end
e = assert_raise(ArgumentError) do
eval <<-END, nil, __FILE__, __LINE__+1
# coding: foo
END
end
assert_include(e.message, "# coding: foo\n ^~~")
e = assert_raise(ArgumentError) do
eval <<-END, nil, __FILE__, __LINE__+1
# coding = foo
END
end
assert_include(e.message, "# coding = foo\n ^~~")
end
def test_utf8_bom
x = nil
assert_nothing_raised do
eval "\xef\xbb\xbf x = __ENCODING__"
end
assert_equal(Encoding.find("UTF-8"), x)
assert_raise(NameError) { eval "\xef" }
end
def test_dot_in_next_line
x = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
x = 1
.to_s
END
end
assert_equal("1", x)
end
def test_pow_asgn
x = 3
assert_nothing_raised { eval("x **= 2") }
assert_equal(9, x)
end
def test_embedded_rd
assert_valid_syntax("=begin\n""=end")
assert_valid_syntax("=begin\n""=end\0")
assert_valid_syntax("=begin\n""=end\C-d")
assert_valid_syntax("=begin\n""=end\C-z")
end
def test_embedded_rd_error
error = 'embedded document meets end of file'
assert_syntax_error("=begin\n", error)
assert_syntax_error("=begin", error)
end
def test_float
assert_predicate(assert_warning(/out of range/) {eval("1e10000")}, :infinite?)
assert_syntax_error('1_E', /trailing '_'/)
assert_syntax_error('1E1E1', /unexpected constant/)
end
def test_global_variable
assert_equal(nil, assert_warning(/not initialized/) {eval('$-x')})
assert_equal(nil, eval('alias $preserve_last_match $&'))
assert_equal(nil, eval('alias $& $test_parse_foobarbazqux'))
$test_parse_foobarbazqux = nil
assert_equal(nil, $&)
assert_equal(nil, eval('alias $& $preserve_last_match'))
assert_syntax_error('a = $#', /as a global variable name\na = \$\#\n \^~$/)
end
def test_invalid_instance_variable
pattern = /without identifiers is not allowed as an instance variable name/
assert_syntax_error('@%', pattern)
assert_syntax_error('@', pattern)
end
def test_invalid_class_variable
pattern = /without identifiers is not allowed as a class variable name/
assert_syntax_error('@@%', pattern)
assert_syntax_error('@@', pattern)
end
def test_invalid_char
bug10117 = '[ruby-core:64243] [Bug #10117]'
invalid_char = /Invalid char '\\x01'/
x = 1
assert_in_out_err(%W"-e \x01x", "", [], invalid_char, bug10117)
assert_syntax_error("\x01x", invalid_char, bug10117)
assert_equal(nil, eval("\x04x"))
assert_equal 1, x
end
def test_literal_concat
x = "baz"
assert_equal("foobarbaz", eval('"foo" "bar#{x}"'))
assert_equal("baz", x)
end
def test_unassignable
assert_syntax_error(%q(self = 1), /Can't change the value of self/)
assert_syntax_error(%q(nil = 1), /Can't assign to nil/)
assert_syntax_error(%q(true = 1), /Can't assign to true/)
assert_syntax_error(%q(false = 1), /Can't assign to false/)
assert_syntax_error(%q(__FILE__ = 1), /Can't assign to __FILE__/)
assert_syntax_error(%q(__LINE__ = 1), /Can't assign to __LINE__/)
assert_syntax_error(%q(__ENCODING__ = 1), /Can't assign to __ENCODING__/)
assert_syntax_error("def foo; FOO = 1; end", /dynamic constant assignment/)
assert_syntax_error("x, true", /Can't assign to true/)
end
def test_block_dup
assert_syntax_error("foo(&proc{}) {}", /both block arg and actual block/)
end
def test_set_backref
assert_syntax_error("$& = 1", /Can't set variable/)
end
def test_arg_concat
o = Object.new
class << o; self; end.instance_eval do
define_method(:[]=) {|*r, &b| b.call(r) }
end
r = nil
assert_nothing_raised do
eval <<-END, nil, __FILE__, __LINE__+1
o[&proc{|x| r = x }] = 1
END
end
assert_equal([1], r)
end
def test_void_expr_stmts_value
x = 1
useless_use = /useless use/
assert_nil assert_warning(useless_use) {eval("x; nil")}
assert_nil assert_warning(useless_use) {eval("1+1; nil")}
assert_nil assert_warning('') {eval("1.+(1); nil")}
assert_nil assert_warning(useless_use) {eval("TestParse; nil")}
assert_nil assert_warning(useless_use) {eval("::TestParse; nil")}
assert_nil assert_warning(useless_use) {eval("x..x; nil")}
assert_nil assert_warning(useless_use) {eval("x...x; nil")}
assert_nil assert_warning(useless_use) {eval("self; nil")}
assert_nil assert_warning(useless_use) {eval("nil; nil")}
assert_nil assert_warning(useless_use) {eval("true; nil")}
assert_nil assert_warning(useless_use) {eval("false; nil")}
assert_nil assert_warning(useless_use) {eval("defined?(1); nil")}
assert_equal 1, x
assert_syntax_error("1; next; 2", /Invalid next/)
end
def test_assign_in_conditional
# multiple assignment
assert_warning(/'= literal' in conditional/) do
eval <<-END, nil, __FILE__, __LINE__+1
(x, y = 1, 2) ? 1 : 2
END
end
# instance variable assignment
assert_warning(/'= literal' in conditional/) do
eval <<-END, nil, __FILE__, __LINE__+1
if @x = true
1
else
2
end
END
end
# local variable assignment
assert_warning(/'= literal' in conditional/) do
eval <<-END, nil, __FILE__, __LINE__+1
def m
if x = true
1
else
2
end
end
END
end
# global variable assignment
assert_separately([], <<-RUBY)
assert_warning(/'= literal' in conditional/) do
eval <<-END, nil, __FILE__, __LINE__+1
if $x = true
1
else
2
end
END
end
RUBY
# dynamic variable assignment
assert_warning(/'= literal' in conditional/) do
eval <<-END, nil, __FILE__, __LINE__+1