require 'test/unit'
require 'glue/string'

class TCStringUtilsUtils < Test::Unit::TestCase # :nodoc: all
	include Glue

	def setup
		@s = "this is any cool test"
	end

	def test_valid?
		assert_equal(true, StringUtils.valid?("test"))
		assert_equal(false, StringUtils.valid?(""))
		assert_equal(false, StringUtils.valid?(nil))
	end

	def test_head
		assert_equal(nil, StringUtils.head(nil))
		assert_equal("this...", StringUtils.head(@s, 3))
		assert_equal("this+++", StringUtils.head(@s, 3, false, "+++"))
		assert_equal("thi...", StringUtils.head(@s, 3, true))
		assert_equal("this is...", StringUtils.head(@s, 8))
		assert_equal(nil, StringUtils.head(@s, 0))
		assert_equal(nil, StringUtils.head(@s, 0, true))
		assert_equal("this is...", StringUtils.head(@s, 8, true))
	end

	def test_rewrite
		rules = [
			[/\/\$/, "../n1"],
			[/\$/, "../n1"],
			[/^games/, "../../games"],
			[/^tmp/, "/n/theseas/var/tmp"],
		]
		string = StringUtils.rewrite("games/arkanoid.html", rules)
		assert_equal("../../games/arkanoid.html", string)
		string = StringUtils.rewrite("tmp/garbage.html", rules)
		assert_equal("/n/theseas/var/tmp/garbage.html", string)
		string = StringUtils.rewrite("root/index.html", rules)
		assert_equal("root/index.html", string)
		assert_equal(nil, StringUtils.rewrite(nil, rules))
		assert_equal("", StringUtils.rewrite("", rules))

		assert_raises(ArgumentError) {
			assert_equal("koko", StringUtils.rewrite("koko", nil))
		}

		# bug: should keep order
		s = StringUtils.rewrite("/$/koko.html", rules)
		assert_equal("../n1/koko.html", s)
	end

	def test_wrap
		s = "1234567890abcdefghijklmnopqrstu"
		r = "1234 5678 90ab cdef ghij klmn opqr stu"
		assert_equal(r, StringUtils::wrap(s, 4, " "))

		s = "111111111111111111111111111111111111111111111111"
		r = "1111111111 1111111111 1111111111 1111111111 11111111"
		assert_equal(r, StringUtils::wrap(s, 10, " "))

		s = "jackdaws love my big sphinx of quartz"
		r = "jackdaws love my big sphinx of quartz"
		assert_equal(r, StringUtils::wrap(s, 10, " "))

		s = "jackdaws love my big sphinx of quartz"
		r = "jack daws love my big sphi nx of quar tz"
		assert_equal(r, StringUtils::wrap(s, 4, " "))

		s = "jack.daws love my big sphinx of quartz"
		r = "jack .daw s love my big sphi nx of quar tz"
		assert_equal(r, StringUtils::wrap(s, 4, " "))

		assert_equal("", StringUtils::wrap("", 4, " "))
		assert_equal(nil, StringUtils::wrap(nil, 4, " "))
	end
=begin
	def test_rationalize_filename
		filename = StringUtils.rationalize_filename("hello my friend!.gif")
		assert_equal("hello-my-friend.gif", filename)
		filename = StringUtils.rationalize_filename("παμε παλι.gif")
		assert_equal("pame-pali.gif", filename)
		filename = StringUtils.rationalize_filename("τί λές.gif")
		assert_equal("ti-les.gif", filename)

		# bug:
		filename = StringUtils.rationalize_filename("image-(10).gif")
		assert_equal("image-10.gif", filename)
	end
=end
	def test_random_string
		s1 = StringUtils.random()
		s2 = StringUtils.random()
		assert_not_equal(s1, s2)
		assert(s1.size == s2.size)
	end

	def teardown
		@s = nil
	end
end