angular-cn/packages/compiler/test/util_spec.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {escapeRegExp, partitionArray, splitAtColon, stringify, utf8Encode} from '../src/util';
{
describe('util', () => {
describe('splitAtColon', () => {
it('should split when a single ":" is present', () => {
expect(splitAtColon('a:b', [])).toEqual(['a', 'b']);
});
it('should trim parts', () => {
expect(splitAtColon(' a : b ', [])).toEqual(['a', 'b']);
});
it('should support multiple ":"', () => {
expect(splitAtColon('a:b:c', [])).toEqual(['a', 'b:c']);
});
it('should use the default value when no ":" is present', () => {
expect(splitAtColon('ab', ['c', 'd'])).toEqual(['c', 'd']);
});
});
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describe('RegExp', () => {
it('should escape regexp', () => {
expect(new RegExp(escapeRegExp('b')).exec('abc')).toBeTruthy();
expect(new RegExp(escapeRegExp('b')).exec('adc')).toBeFalsy();
expect(new RegExp(escapeRegExp('a.b')).exec('a.b')).toBeTruthy();
expect(new RegExp(escapeRegExp('a.b')).exec('axb')).toBeFalsy();
});
});
describe('utf8encode', () => {
// tests from https://github.com/mathiasbynens/wtf-8
it('should encode to utf8', () => {
const tests = [
['abc', 'abc'],
// // 1-byte
['\0', '\0'],
// // 2-byte
['\u0080', '\xc2\x80'],
['\u05ca', '\xd7\x8a'],
['\u07ff', '\xdf\xbf'],
// // 3-byte
['\u0800', '\xe0\xa0\x80'],
['\u2c3c', '\xe2\xb0\xbc'],
['\uffff', '\xef\xbf\xbf'],
// //4-byte
['\uD800\uDC00', '\xF0\x90\x80\x80'],
['\uD834\uDF06', '\xF0\x9D\x8C\x86'],
['\uDBFF\uDFFF', '\xF4\x8F\xBF\xBF'],
// unmatched surrogate halves
// high surrogates: 0xD800 to 0xDBFF
['\uD800', '\xED\xA0\x80'],
['\uD800\uD800', '\xED\xA0\x80\xED\xA0\x80'],
['\uD800A', '\xED\xA0\x80A'],
['\uD800\uD834\uDF06\uD800', '\xED\xA0\x80\xF0\x9D\x8C\x86\xED\xA0\x80'],
['\uD9AF', '\xED\xA6\xAF'],
['\uDBFF', '\xED\xAF\xBF'],
// low surrogates: 0xDC00 to 0xDFFF
['\uDC00', '\xED\xB0\x80'],
['\uDC00\uDC00', '\xED\xB0\x80\xED\xB0\x80'],
['\uDC00A', '\xED\xB0\x80A'],
['\uDC00\uD834\uDF06\uDC00', '\xED\xB0\x80\xF0\x9D\x8C\x86\xED\xB0\x80'],
['\uDEEE', '\xED\xBB\xAE'],
['\uDFFF', '\xED\xBF\xBF'],
];
tests.forEach(([input, output]) => {
expect(utf8Encode(input)).toEqual(output);
});
});
});
describe('stringify()', () => {
it('should handle objects with no prototype.', () => {
expect(stringify(Object.create(null))).toEqual('object');
});
});
describe('partitionArray()', () => {
it('should handle empty arrays', () => {
expect(partitionArray([], () => true)).toEqual([[], []]);
});
it('should handle arrays with primitive type values', () => {
expect(partitionArray([1, 2, 3], (el: number) => el < 2)).toEqual([[1], [2, 3]]);
});
it('should handle arrays of objects', () => {
expect(partitionArray([{id: 1}, {id: 2}, {id: 3}], (el: any) => el.id < 2)).toEqual([
[{id: 1}], [{id: 2}, {id: 3}]
]);
});
});
});
}