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function testToLowerCase() {
var s1 = "abcdefgABCDEFGH 123456";
assertEq(isLatin1(s1), true);
// Latin1
var s2 = s1.toLowerCase();
assertEq(isLatin1(s2), true);
assertEq(s2, "abcdefgabcdefgh 123456");
s2 = s1.toLocaleLowerCase();
assertEq(isLatin1(s2), true);
assertEq(s2, "abcdefgabcdefgh 123456");
// TwoByte
s2 = "abcdefg\u1200ABCDEFGH 123456\u04AC".toLowerCase();
assertEq(s2, "abcdefg\u1200abcdefgh 123456\u04AD");
s2 = "abcdefg\u1200ABCDEFGH 123456\u04AC".toLocaleLowerCase();
assertEq(s2, "abcdefg\u1200abcdefgh 123456\u04AD");
// For toLowerCase, every Latin1 character maps to a Latin1 character.
for (var i=0; i <= 0xff; i++) {
var s = "\u1200\u11AA" + String.fromCharCode(i);
assertEq(s.toLowerCase().charCodeAt(2) <= 0xff, true);
}
}
testToLowerCase();
function testToUpperCase() {
var s1 = "abcdefgABCDEFGH 12345";
assertEq(isLatin1(s1), true);
// Latin1
var s2 = s1.toUpperCase();
assertEq(isLatin1(s2), true);
assertEq(s2, "ABCDEFGABCDEFGH 12345");
s2 = s1.toLocaleUpperCase();
assertEq(isLatin1(s2), true);
assertEq(s2, "ABCDEFGABCDEFGH 12345");
// TwoByte
s2 = "abcdefg\u1200ABCDEFGH 12345\u1E0F".toUpperCase();
assertEq(s2, "ABCDEFG\u1200ABCDEFGH 12345\u1E0E");
s2 = "abcdefg\u1200ABCDEFGH 12345\u1E0F".toLocaleUpperCase();
assertEq(s2, "ABCDEFG\u1200ABCDEFGH 12345\u1E0E");
// Tricky case: Latin1 character \u00FF maps to \u0178, a
// non-Latin1 character.
s1 = "ABC\u00FF";
assertEq(isLatin1(s1), true);
s2 = s1.toUpperCase();
assertEq(isLatin1(s2), false);
assertEq(s2, "ABC\u0178");
}
testToUpperCase();
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