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# frozen_string_literal: true
require 'test/unit'
require '-test-/string'
require 'rbconfig/sizeof'
class Test_StringCapacity < Test::Unit::TestCase
def capa(str)
Bug::String.capacity(str)
end
def test_capacity_embeded
size = RbConfig::SIZEOF['void*'] * 3 - 1
assert_equal size, capa('foo')
end
def test_capacity_shared
assert_equal 0, capa(:abcdefghijklmnopqrstuvwxyz.to_s)
end
def test_capacity_normal
assert_equal 128, capa('1'*128)
end
def test_s_new_capacity
assert_equal("", String.new(capacity: 1000))
assert_equal(String, String.new(capacity: 1000).class)
assert_equal(10000, capa(String.new(capacity: 10000)))
assert_equal("", String.new(capacity: -1000))
assert_equal(capa(String.new(capacity: -10000)), capa(String.new(capacity: -1000)))
end
end
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