| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128 |
- /**
- * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- import {
- isLowSurrogateHalf,
- isHighSurrogateHalf,
- isCombiningMark,
- isInsideSurrogatePair,
- isInsideCombinedSymbol
- } from '../src/unicode';
- describe( 'utils', () => {
- describe( 'unicode', () => {
- describe( 'isHighSurrogateHalf', () => {
- it( 'should return true if given character is a high surrogate half', () => {
- // '𨭎'.charCodeAt( 0 ); // 55394 --> high surrogate half.
- // '𨭎'.charCodeAt( 1 ); // 57166 --> low surrogate half.
- expect( isHighSurrogateHalf( String.fromCharCode( 55394 ) ) ).to.be.true;
- } );
- it( 'should return false if given character is a low surrogate half', () => {
- // '𨭎'.charCodeAt( 0 ); // 55394 --> high surrogate half.
- // '𨭎'.charCodeAt( 1 ); // 57166 --> low surrogate half.
- expect( isHighSurrogateHalf( String.fromCharCode( 57166 ) ) ).to.be.false;
- } );
- it( 'should return false if given character is not a surrogate half', () => {
- expect( isHighSurrogateHalf( 'a' ) ).to.be.false;
- expect( isHighSurrogateHalf( '𨭎' ) ).to.be.false;
- } );
- it( 'should return false for falsy values', () => {
- expect( isHighSurrogateHalf( null ) ).to.be.false;
- expect( isHighSurrogateHalf( undefined ) ).to.be.false;
- expect( isHighSurrogateHalf( false ) ).to.be.false;
- expect( isHighSurrogateHalf( 0 ) ).to.be.false;
- } );
- } );
- describe( 'isLowSurrogateHalf', () => {
- it( 'should return true if given character is a low surrogate half', () => {
- // '𨭎'.charCodeAt( 0 ); // 55394 --> high surrogate half.
- // '𨭎'.charCodeAt( 1 ); // 57166 --> low surrogate half.
- expect( isLowSurrogateHalf( String.fromCharCode( 57166 ) ) ).to.be.true;
- } );
- it( 'should return false if given character is a high surrogate half', () => {
- // '𨭎'.charCodeAt( 0 ); // 55394 --> high surrogate half.
- // '𨭎'.charCodeAt( 1 ); // 57166 --> low surrogate half.
- expect( isLowSurrogateHalf( String.fromCharCode( 55394 ) ) ).to.be.false;
- } );
- it( 'should return false if given character is not a surrogate half', () => {
- expect( isLowSurrogateHalf( 'a' ) ).to.be.false;
- expect( isLowSurrogateHalf( '𨭎' ) ).to.be.false;
- } );
- it( 'should return false for falsy values', () => {
- expect( isLowSurrogateHalf( null ) ).to.be.false;
- expect( isLowSurrogateHalf( undefined ) ).to.be.false;
- expect( isLowSurrogateHalf( false ) ).to.be.false;
- expect( isLowSurrogateHalf( 0 ) ).to.be.false;
- } );
- } );
- describe( 'isCombiningMark', () => {
- it( 'should return true if given character is a combining mark', () => {
- expect( isCombiningMark( '̣' ) ).to.be.true;
- } );
- it( 'should return false if given character is not a combining mark', () => {
- expect( isCombiningMark( 'a' ) ).to.be.false;
- expect( isCombiningMark( 'q̣' ) ).to.be.false;
- } );
- it( 'should return false for falsy values', () => {
- expect( isCombiningMark( null ) ).to.be.false;
- expect( isCombiningMark( undefined ) ).to.be.false;
- expect( isCombiningMark( false ) ).to.be.false;
- expect( isCombiningMark( 0 ) ).to.be.false;
- } );
- } );
- describe( 'isInsideSurrogatePair', () => {
- const testString = 'a𨭎b';
- it( 'should return true if given offset in a string is inside a surrogate pair', () => {
- expect( isInsideSurrogatePair( testString, 2 ) ).to.be.true;
- } );
- it( 'should return false if given offset in a string is not inside a surrogate pair', () => {
- expect( isInsideSurrogatePair( testString, 1 ) ).to.be.false;
- expect( isInsideSurrogatePair( testString, 3 ) ).to.be.false;
- } );
- it( 'should return false if given offset in a string is at the string beginning or end', () => {
- expect( isInsideSurrogatePair( testString, 0 ) ).to.be.false;
- expect( isInsideSurrogatePair( testString, 4 ) ).to.be.false;
- } );
- it( 'should return false if given offset is between two surrogate pairs', () => {
- expect( isInsideSurrogatePair( '𨭎𨭎', 2 ) ).to.be.false;
- } );
- } );
- describe( 'isInsideCombinedSymbol', () => {
- const testString = 'aa̻̐ͩbb';
- it( 'should return true if given offset in a string is inside a symbol with combining mark', () => {
- expect( isInsideCombinedSymbol( testString, 2 ) ).to.be.true;
- expect( isInsideCombinedSymbol( testString, 3 ) ).to.be.true;
- expect( isInsideCombinedSymbol( testString, 4 ) ).to.be.true;
- } );
- it( 'should return false if given offset in a string is not inside a symbol with combining mark', () => {
- expect( isInsideCombinedSymbol( testString, 1 ) ).to.be.false;
- expect( isInsideCombinedSymbol( testString, 5 ) ).to.be.false;
- } );
- it( 'should return false if given offset in a string is at the string beginning or end', () => {
- expect( isInsideCombinedSymbol( testString, 0 ) ).to.be.false;
- expect( isInsideCombinedSymbol( testString, 6 ) ).to.be.false;
- } );
- } );
- } );
- } );
|