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# frozen_string_literal: false
require 'test/unit'
require "-test-/string"
class Test_StrSetLen < Test::Unit::TestCase
def setup
@s0 = [*"a".."z"].join("").freeze
@s1 = Bug::String.new(@s0)
end
def teardown
orig = [*"a".."z"].join("")
assert_equal(orig, @s0)
end
def test_non_shared
@s1.modify!
assert_equal("abc", @s1.set_len(3))
end
def test_shared
assert_raise(RuntimeError) {
assert_equal("abc", @s1.set_len(3))
}
end
def test_capacity_equals_to_new_size
bug12757 = "[ruby-core:77257] [Bug #12757]"
# fill to ensure capacity does not decrease with force_encoding
str = Bug::String.new("\x00" * 128, capacity: 128)
str.force_encoding("UTF-32BE")
assert_equal 128, Bug::String.capacity(str)
assert_equal 127, str.set_len(127).bytesize, bug12757
end
end
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