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# -*- coding: us-ascii -*-
# frozen_string_literal: false
require 'test/unit'
class TestConst < Test::Unit::TestCase
Constants_Setup = -> do
remove_const :TEST1 if defined? ::TestConst::TEST1
remove_const :TEST2 if defined? ::TestConst::TEST2
remove_const :Const if defined? ::TestConst::Const
remove_const :Const2 if defined? ::TestConst::Const2
TEST1 = 1
TEST2 = 2
module Const
TEST3 = 3
TEST4 = 4
end
module Const2
TEST3 = 6
TEST4 = 8
end
end
def test_const
Constants_Setup.call
assert defined?(TEST1)
assert_equal 1, TEST1
assert defined?(TEST2)
assert_equal 2, TEST2
self.class.class_eval {
include Const
}
assert defined?(TEST1)
assert_equal 1, TEST1
assert defined?(TEST2)
assert_equal 2, TEST2
assert defined?(TEST3)
assert_equal 3, TEST3
assert defined?(TEST4)
assert_equal 4, TEST4
self.class.class_eval {
include Const2
}
# STDERR.print "intentionally redefines TEST3, TEST4\n" if $VERBOSE
assert defined?(TEST1)
assert_equal 1, TEST1
assert defined?(TEST2)
assert_equal 2, TEST2
assert defined?(TEST3)
assert_equal 6, TEST3
assert defined?(TEST4)
assert_equal 8, TEST4
end
def test_const_access_from_nil
assert_raise(TypeError) { eval("nil::Object") }
assert_nil eval("defined?(nil::Object)")
assert_raise(TypeError) { eval("c = nil; c::Object") }
assert_nil eval("c = nil; defined?(c::Object)")
assert_raise(TypeError) { eval("sc = Class.new; sc::C = nil; sc::C::Object") }
assert_nil eval("sc = Class.new; sc::C = nil; defined?(sc::C::Object)")
end
def test_redefinition
c = Class.new
name = "X\u{5b9a 6570}"
c.const_set(name, 1)
prev_line = __LINE__ - 1
assert_warning(<<-WARNING) {c.const_set(name, 2)}
#{__FILE__}:#{__LINE__-1}: warning: already initialized constant #{c}::#{name}
#{__FILE__}:#{prev_line}: warning: previous definition of #{name} was here
WARNING
end
def test_redefinition_memory_leak
code = <<-PRE
350000.times { FOO = :BAR }
PRE
assert_no_memory_leak(%w[-W0 -], '', code, 'redefined constant', timeout: 30)
end
def test_toplevel_lookup
assert_raise(NameError, '[Feature #11547]') {TestConst::Object}
end
end
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