// Copyright 2012 Twitter, Inc // http://www.apache.org/licenses/LICENSE-2.0 var TwitterCldr = require('../../lib/assets/javascripts/twitter_cldr/en.js'); describe("Utilities", function() { describe("#remove_duplicates", function() { it("should remove duplicates elements from the array", function() { expect(TwitterCldr.Utilities.remove_duplicates([1,2,3,4,1,5])).toEqual([1,2,3,4,5]); }); }); describe("#regex_escape", function() { it("escapes special characters strings properly so that they can be used in regexes.", function() { expect(TwitterCldr.Utilities.regex_escape("([.*+?^=!:${}()|\[\]\/\\])")).toEqual("\\(\\[\\.\\*\\+\\?\\^\\=\\!\\:\\$\\{\\}\\(\\)\\|\\[\\]\\/\\\\\\]\\)") }); }); describe("#trim_string", function() { it("removes all the leading whitespace from a string", function() { expect(TwitterCldr.Utilities.trim_string(" Hello")).toEqual("Hello"); }); it("removes all the trailing whitespace from a string", function() { expect(TwitterCldr.Utilities.trim_string("Hello ")).toEqual("Hello"); }); it("removes all the leading and trailing backspace from a string.", function() { expect(TwitterCldr.Utilities.trim_string(" Hello ")).toEqual("Hello"); }); }); describe("#clone", function() { it("clones objects", function() { var obj = {a : "b", c : "d"}; var clone = TwitterCldr.Utilities.clone(obj); expect(clone).toEqual(obj); expect(clone).not.toBe(obj); expect(clone["a"]).toEqual(obj["a"]); expect(clone["c"]).toEqual(obj["c"]); }); }); describe("#compute_cache_key", function() { it("creates a cache key for an array of pieces", function() { expect(TwitterCldr.Utilities.compute_cache_key(["a", "b"])).toEqual("a|b"); }); it("returns null for empty arrays", function() { expect(TwitterCldr.Utilities.compute_cache_key([])).toBe(null); }); it("returns null if no parameters are passed", function() { expect(TwitterCldr.Utilities.compute_cache_key()).toBe(null); }); }); describe("#is_even", function() { it("should return true if the given number is even", function() { for(var i = 0; i <= 1000; i += 2) { expect(TwitterCldr.Utilities.is_even(i)).toEqual(true); } }); it("should return false if the given number is odd", function() { for(var i = 1; i < 1000; i += 2) { expect(TwitterCldr.Utilities.is_even(i)).toEqual(false); } }); }); describe("#is_odd", function() { it("should return true if the given number is odd", function() { for(var i = 1; i < 1000; i += 2) { expect(TwitterCldr.Utilities.is_odd(i)).toEqual(true); } }); it("should return false if the given number is even", function() { for(var i = 0; i <= 1000; i += 2) { expect(TwitterCldr.Utilities.is_odd(i)).toEqual(false); } }); }); describe("#max", function() { it("should work for a basic array of integers", function() { expect(TwitterCldr.Utilities.max([100, 4, 81, 30, 122])).toEqual(122); expect(TwitterCldr.Utilities.max([100, 4, 122, 81, 30])).toEqual(122); expect(TwitterCldr.Utilities.max([122, 100, 4, 81, 30])).toEqual(122); expect(TwitterCldr.Utilities.max([5, 5, 5, 5, 5])).toEqual(5); }); it("should work for an array that contains a few undefineds", function() { expect(TwitterCldr.Utilities.max([1, 2, undefined, 3, 4])).toEqual(4); expect(TwitterCldr.Utilities.max([undefined, 1, 2, 3, 4])).toEqual(4); expect(TwitterCldr.Utilities.max([1, 2, 3, 4, undefined])).toEqual(4); }); }); describe("#min", function() { it("should work for a basic array of integers", function() { expect(TwitterCldr.Utilities.min([100, 4, 81, 30, 122])).toEqual(4); expect(TwitterCldr.Utilities.min([100, 4, 122, 81, 30])).toEqual(4); expect(TwitterCldr.Utilities.min([122, 100, 4, 81, 30])).toEqual(4); expect(TwitterCldr.Utilities.min([5, 5, 5, 5, 5])).toEqual(5); }); it("should work for an array that contains a few undefineds", function() { expect(TwitterCldr.Utilities.min([1, 2, undefined, 3, 4])).toEqual(1); expect(TwitterCldr.Utilities.min([undefined, 1, 2, 3, 4])).toEqual(1); expect(TwitterCldr.Utilities.min([1, 2, 3, 4, undefined])).toEqual(1); }); }); describe("#arraycopy", function() { it("should copy to and from a basic array", function() { var array = [1, 2, 3, 4, 5, 6]; TwitterCldr.Utilities.arraycopy(array, 0, array, 3, 3); expect(array).toEqual([1, 2, 3, 1, 2, 3]); }); it("should copy to and from two separate arrays", function() { var first_array = [1, 2, 3, 4, 5, 6]; var second_array = [7, 8, 9, 10, 11, 12]; TwitterCldr.Utilities.arraycopy(first_array, 3, second_array, 3, 3); expect(second_array).toEqual([7, 8, 9, 4, 5, 6]); expect(first_array).toEqual([1, 2, 3, 4, 5, 6]); }); }); describe("#pack_array", function() { it("should convert code points to their string equivalent", function() { expect(TwitterCldr.Utilities.pack_array([7998])).toEqual("\u1f3e"); }); }); describe("#unpack_string", function() { it("should convert a string to to an array of code points", function() { expect(TwitterCldr.Utilities.unpack_string("\u1f3e")).toEqual([7998]); }); }); describe("#from_char_code", function() { it("should be able to convert a code point less than 0xFFFF", function() { expect(TwitterCldr.Utilities.from_char_code(0x1ABC).length).toEqual(1); }); it("should be able to convert a code point greater than 0xFFFF", function() { // NOTE: JavaScript stores strings in UTF-16 encoding, hence the 2 bytes here instead of 4. expect(TwitterCldr.Utilities.from_char_code(0x2F804).length).toEqual(2); }); }); describe("#char_code_at", function() { it("should be able to get the correct character in a string of single-byte characters", function() { expect(TwitterCldr.Utilities.char_code_at("ABC", 0)).toEqual(65); expect(TwitterCldr.Utilities.char_code_at("ABC", 1)).toEqual(66); expect(TwitterCldr.Utilities.char_code_at("ABC", 2)).toEqual(67); }); it("should be able to get the correct character in a string of multi-byte characters", function() { var str = TwitterCldr.Utilities.pack_array([0x2F804, 0x1F3E9]); expect(TwitterCldr.Utilities.char_code_at(str, 0)).toEqual(194564); expect(TwitterCldr.Utilities.char_code_at(str, 1)).toEqual(127977); }); }); });