// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-unescape-string
es6id: B.2.1.2
description: >
    Does not transform four-character patterns that are interrupted by the end
    of the string
info: |
    [...]
    5. Repeat, while k ≠ length,
       [...]
       a. Let c be the code unit at index k within string.
       b. If c is %, then
          i. If k ≤ length-6 and the code unit at index k+1 within string is u
             and the four code units at indices k+2, k+3, k+4, and k+5 within
             string are all hexadecimal digits, then
             1. Let c be the code unit whose value is the integer represented
                by the four hexadecimal digits at indices k+2, k+3, k+4, and
                k+5 within string.
             2. Increase k by 5.
       [...]
---*/

assert.sameValue(unescape('%u'), '%u');

assert.sameValue(unescape('%u0'), '%u0');
assert.sameValue(unescape('%u1'), '%u1');
assert.sameValue(unescape('%u2'), '%u2');
assert.sameValue(unescape('%u3'), '%u3');
assert.sameValue(unescape('%u4'), '%u4');
assert.sameValue(unescape('%u5'), '%u5');
assert.sameValue(unescape('%u6'), '%u6');
assert.sameValue(unescape('%u7'), '%u7');
assert.sameValue(unescape('%u8'), '%u8');
assert.sameValue(unescape('%u9'), '%u9');
assert.sameValue(unescape('%ua'), '%ua');
assert.sameValue(unescape('%uA'), '%uA');
assert.sameValue(unescape('%ub'), '%ub');
assert.sameValue(unescape('%uB'), '%uB');
assert.sameValue(unescape('%uc'), '%uc');
assert.sameValue(unescape('%uC'), '%uC');
assert.sameValue(unescape('%ud'), '%ud');
assert.sameValue(unescape('%uD'), '%uD');
assert.sameValue(unescape('%ue'), '%ue');
assert.sameValue(unescape('%uE'), '%uE');
assert.sameValue(unescape('%uf'), '%uf');
assert.sameValue(unescape('%uF'), '%uF');

assert.sameValue(unescape('%u00'), '%u00');
assert.sameValue(unescape('%u01'), '%u01');
assert.sameValue(unescape('%u02'), '%u02');
assert.sameValue(unescape('%u03'), '%u03');
assert.sameValue(unescape('%u04'), '%u04');
assert.sameValue(unescape('%u05'), '%u05');
assert.sameValue(unescape('%u06'), '%u06');
assert.sameValue(unescape('%u07'), '%u07');
assert.sameValue(unescape('%u08'), '%u08');
assert.sameValue(unescape('%u09'), '%u09');
assert.sameValue(unescape('%u0a'), '%u0a');
assert.sameValue(unescape('%u0A'), '%u0A');
assert.sameValue(unescape('%u0b'), '%u0b');
assert.sameValue(unescape('%u0B'), '%u0B');
assert.sameValue(unescape('%u0c'), '%u0c');
assert.sameValue(unescape('%u0C'), '%u0C');
assert.sameValue(unescape('%u0d'), '%u0d');
assert.sameValue(unescape('%u0D'), '%u0D');
assert.sameValue(unescape('%u0e'), '%u0e');
assert.sameValue(unescape('%u0E'), '%u0E');
assert.sameValue(unescape('%u0f'), '%u0f');
assert.sameValue(unescape('%u0F'), '%u0F');

assert.sameValue(unescape('%u000'), '%u000');
assert.sameValue(unescape('%u001'), '%u001');
assert.sameValue(unescape('%u002'), '%u002');
assert.sameValue(unescape('%u003'), '%u003');
assert.sameValue(unescape('%u004'), '%u004');
assert.sameValue(unescape('%u005'), '%u005');
assert.sameValue(unescape('%u006'), '%u006');
assert.sameValue(unescape('%u007'), '%u007');
assert.sameValue(unescape('%u008'), '%u008');
assert.sameValue(unescape('%u009'), '%u009');
assert.sameValue(unescape('%u00a'), '%u00a');
assert.sameValue(unescape('%u00A'), '%u00A');
assert.sameValue(unescape('%u00b'), '%u00b');
assert.sameValue(unescape('%u00B'), '%u00B');
assert.sameValue(unescape('%u00c'), '%u00c');
assert.sameValue(unescape('%u00C'), '%u00C');
assert.sameValue(unescape('%u00d'), '%u00d');
assert.sameValue(unescape('%u00D'), '%u00D');
assert.sameValue(unescape('%u00e'), '%u00e');
assert.sameValue(unescape('%u00E'), '%u00E');
assert.sameValue(unescape('%u00f'), '%u00f');
assert.sameValue(unescape('%u00F'), '%u00F');