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ruby--ruby/bootstraptest/test_eval.rb
Jeremy Evans 900e83b501 Turn class variable warnings into exceptions
This changes the following warnings:

* warning: class variable access from toplevel
* warning: class variable @foo of D is overtaken by C

into RuntimeErrors.  Handle defined?(@@foo) at toplevel
by returning nil instead of raising an exception (the previous
behavior warned before returning nil when defined? was used).

Refactor the specs to avoid the warnings even in older versions.
The specs were checking for the warnings, but the purpose of
the related specs as evidenced from their description is to
test for behavior, not for warnings.

Fixes [Bug ]
2020-04-10 00:29:05 -07:00

329 lines
4.8 KiB
Ruby

assert_equal %q{ok}, %q{
def m
a = :ok
$b = binding
end
m
eval('a', $b)
}
assert_equal %q{[:ok, :ok2]}, %q{
def m
a = :ok
$b = binding
end
m
eval('b = :ok2', $b)
eval('[a, b]', $b)
}
assert_equal %q{[nil, 1]}, %q{
$ans = []
def m
$b = binding
end
m
$ans << eval(%q{
$ans << eval(%q{
a
}, $b)
a = 1
}, $b)
$ans
}
assert_equal %q{C}, %q{
Const = :top
class C
Const = :C
def m
binding
end
end
eval('Const', C.new.m)
}
assert_equal %q{top}, %q{
Const = :top
a = 1
class C
Const = :C
def m
eval('Const', TOPLEVEL_BINDING)
end
end
C.new.m
}
assert_equal %q{:ok
ok}, %q{
class C
$b = binding
end
eval %q{
def m
:ok
end
}, $b
p C.new.m
}
assert_equal %q{ok}, %q{
b = proc{
a = :ok
binding
}.call
a = :ng
eval("a", b)
}
assert_equal %q{C}, %q{
class C
def foo
binding
end
end
C.new.foo.eval("self.class.to_s")
}
assert_equal %q{1}, %q{
eval('1')
}
assert_equal %q{1}, %q{
eval('a=1; a')
}
assert_equal %q{1}, %q{
a = 1
eval('a')
}
assert_equal %q{ok}, %q{
__send__ :eval, %{
:ok
}
}
assert_equal %q{ok}, %q{
1.__send__ :instance_eval, %{
:ok
}
}
assert_equal %q{1}, %q{
1.instance_eval{
self
}
}
assert_equal %q{foo}, %q{
'foo'.instance_eval{
self
}
}
assert_equal %q{1}, %q{
class Integer
Const = 1
end
1.instance_eval %{
Const
}
}
assert_equal %q{top}, %q{
Const = :top
class C
Const = :C
end
C.module_eval{
Const
}
}
assert_equal %q{C}, %q{
Const = :top
class C
Const = :C
end
C.class_eval %{
def m
Const
end
}
C.new.m
}
assert_equal %q{top}, %q{
Const = :top
class C
Const = :C
end
C.class_eval{
def m
Const
end
}
C.new.m
}
assert_equal %q{[:top, :C, :top, :C]}, %q{
Const = :top
class C
Const = :C
end
$nest = false
$ans = []
def m
$ans << Const
C.module_eval %{
$ans << Const
Boo = false unless defined? Boo
unless $nest
$nest = true
m
end
}
end
m
$ans
}
assert_equal %q{[10, main]}, %q{
$nested = false
$ans = []
$pr = proc{
$ans << self
unless $nested
$nested = true
$pr.call
end
}
class C
def initialize &b
10.instance_eval(&b)
end
end
C.new(&$pr)
$ans
}
%w[break next redo].each do |keyword|
assert_match %r"Can't escape from eval with #{keyword}\b", %{
STDERR.reopen(STDOUT)
begin
eval "0 rescue #{keyword}"
rescue SyntaxError => e
e.message
end
}, '[ruby-dev:31372]'
end
assert_normal_exit %q{
STDERR.reopen(STDOUT)
class Foo
def self.add_method
class_eval("def some-bad-name; puts 'hello' unless @some_variable.some_function(''); end")
end
end
Foo.add_method
}, '[ruby-core:14556] reported by Frederick Cheung'
assert_equal 'ok', %q{
class Module
def my_module_eval(&block)
module_eval(&block)
end
end
class String
Integer.my_module_eval do
def hoge; end
end
end
if Integer.instance_methods(false).map{|m|m.to_sym}.include?(:hoge) &&
!String.instance_methods(false).map{|m|m.to_sym}.include?(:hoge)
:ok
else
:ng
end
}, "[ruby-dev:34236]"
assert_equal 'ok', %q{
begin
eval("class nil::Foo; end")
:ng
rescue Exception
:ok
end
}
assert_equal 'ok', %q{
begin
0.instance_eval { def m() :m end }
1.m
:ng
rescue Exception
:ok
end
}, '[ruby-dev:34579]'
assert_equal 'ok', %q{
begin
class A
12.instance_eval { @@a }
end
rescue NameError
:ok
end
}, '[ruby-core:16794]'
assert_equal 'ok', %q{
begin
class A
12.instance_exec { @@a }
end
rescue NameError
:ok
end
}, '[ruby-core:16794]'
assert_equal 'ok', %q{
nil.instance_eval {
def defd_using_instance_eval() :ok end
}
nil.defd_using_instance_eval
}, '[ruby-core:28324]'
assert_equal 'ok', %q{
nil.instance_exec {
def defd_using_instance_exec() :ok end
}
nil.defd_using_instance_exec
}, '[ruby-core:28324]'
assert_normal_exit %q{
eval("", method(:proc).call {}.binding)
}
assert_equal "", %q{
b = binding
10.times{
eval('', b)
}
begin
eval('1.times{raise}', b)
rescue => e
e.message
end
}, '[ruby-dev:35392]'
assert_equal "[:x]", %q{
def kaboom!
yield.eval("local_variables")
end
for x in enum_for(:kaboom!)
binding
end
}, '[ruby-core:25125]'
assert_normal_exit %q{
hash = {}
("aaaa".."matz").each_with_index do |s, i|
hash[s] = i
end
begin
eval "class C; @@h = #{hash.inspect}; end"
end
}, '[ruby-core:25714]'
assert_normal_exit %q{
begin
eval("# encoding:utf-16le\nfoo")
rescue Exception => e
p e
RubyVM::InstructionSequence.compile("p:hello")
end
}, 'check escaping the internal value th->base_block'