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      1 // Copyright 2016 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Non-unicode use toUpperCase mappings.
      6 assertFalse(/[\u00e5]/i.test("\u212b"));
      7 assertFalse(/[\u212b]/i.test("\u00e5\u1234"));
      8 assertFalse(/[\u212b]/i.test("\u00e5"));
      9 
     10 assertTrue("\u212b".toLowerCase() == "\u00e5");
     11 assertTrue("\u00c5".toLowerCase() == "\u00e5");
     12 assertTrue("\u00e5".toUpperCase() == "\u00c5");
     13 
     14 // Unicode uses case folding mappings.
     15 assertFalse(/\u00e5/ui.test("\u212b"));
     16 assertTrue(/\u00e5/ui.test("\u00c5"));
     17 assertTrue(/\u00e5/ui.test("\u00e5"));
     18 assertFalse(/\u00e5/ui.test("\u212b"));
     19 assertTrue(/\u00c5/ui.test("\u00e5"));
     20 assertFalse(/\u00c5/ui.test("\u212b"));
     21 assertTrue(/\u00c5/ui.test("\u00c5"));
     22 assertFalse(/\u212b/ui.test("\u00c5"));
     23 assertFalse(/\u212b/ui.test("\u00e5"));
     24 assertTrue(/\u212b/ui.test("\u212b"));
     25 
     26 // Non-BMP.
     27 assertFalse(/\u{10400}/i.test("\u{10428}"));
     28 assertFalse(/\u{10400}/ui.test("\u{10428}"));
     29 assertFalse(/\ud801\udc00/ui.test("\u{10428}"));
     30 assertFalse(/[\u{10428}]/ui.test("\u{10400}"));
     31 assertFalse(/[\ud801\udc28]/ui.test("\u{10400}"));
     32 assertEquals(["\uff21\u{10400}"],
     33              /[\uff40-\u{10428}]+/ui.exec("\uff21\u{10400}abc"));
     34 assertEquals(["abc"], /[^\uff40-\u{10428}]+/ui.exec("\uff21\u{10400}abc\uff23"));
     35 assertEquals(["\uff53\u24bb"],
     36              /[\u24d5-\uff33]+/ui.exec("\uff54\uff53\u24bb\u24ba"));
     37 
     38 // Full mappings are ignored.
     39 assertFalse(/\u00df/ui.test("SS"));
     40 assertFalse(/\u1f8d/ui.test("\u1f05\u03b9"));
     41 
     42 // Simple mappings.
     43 assertFalse(/\u1f8d/ui.test("\u1f85"));
     44 
     45 // Common mappings.
     46 assertTrue(/\u1f6b/ui.test("\u1f63"));
     47 
     48 // Back references.
     49 assertNull(/(.)\1\1/ui.exec("\u00e5\u212b\u00c5"));
     50 assertNull(/(.)\1/ui.exec("\u{118aa}\u{118ca}"));
     51 
     52 
     53 // Non-Latin1 maps to Latin1.
     54 assertNull(/^\u017F/ui.exec("s"));
     55 assertNull(/^\u017F/ui.exec("s\u1234"));
     56 assertNull(/^a[\u017F]/ui.exec("as"));
     57 assertNull(/^a[\u017F]/ui.exec("as\u1234"));
     58