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# frozen_string_literal: false
require 'test/unit'
require '-test-/string'
class Test_String_Fstring < Test::Unit::TestCase
def assert_fstring(str)
fstr = Bug::String.fstring(str)
yield str
yield fstr
end
def test_taint_shared_string
str = __method__.to_s.dup
str.taint
assert_fstring(str) {|s| assert_predicate(s, :tainted?)}
end
def test_taint_normal_string
str = __method__.to_s * 3
str.taint
assert_fstring(str) {|s| assert_predicate(s, :tainted?)}
end
def test_taint_registered_tainted
str = __method__.to_s * 3
str.taint
assert_fstring(str) {|s| assert_predicate(s, :tainted?)}
str = __method__.to_s * 3
assert_fstring(str) {|s| assert_not_predicate(s, :tainted?)}
end
def test_taint_registered_untainted
str = __method__.to_s * 3
assert_fstring(str) {|s| assert_not_predicate(s, :tainted?)}
str = __method__.to_s * 3
str.taint
assert_fstring(str) {|s| assert_predicate(s, :tainted?)}
end
def test_instance_variable
str = __method__.to_s * 3
str.instance_variable_set(:@test, 42)
str.freeze
assert_fstring(str) {|s| assert_send([s, :instance_variable_defined?, :@test])}
end
def test_singleton_method
str = __method__.to_s * 3
def str.foo
end
str.freeze
assert_fstring(str) {|s| assert_send([s, :respond_to?, :foo])}
end
class S < String
end
def test_subclass
str = S.new(__method__.to_s * 3)
str.freeze
assert_fstring(str) {|s| assert_instance_of(S, s)}
end
end
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