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// Test inline title case conversion.
function* characters(...ranges) {
for (let [start, end] of ranges) {
for (let i = start; i <= end; ++i) {
yield i;
}
}
}
const ascii = [...characters(
[0x41, 0x5A], // A..Z
[0x61, 0x7A], // a..z
[0x30, 0x39], // 0..9
)];
const latin1 = [...characters(
[0xC0, 0xFF], // À..ÿ
)];
const twoByte = [...characters(
[0x100, 0x17E], // Ā..ž
)];
String.prototype.toTitleCase = function() {
"use strict";
var s = String(this);
if (s.length === 0) {
return s;
}
return s[0].toUpperCase() + s.substring(1);
};
function toRope(s) {
try {
return newRope(s[0], s.substring(1));
} catch {}
// newRope can fail when |s| fits into an inline string. In that case simply
// return the input.
return s;
}
for (let i = 0; i <= 32; ++i) {
let strings = [ascii, latin1, twoByte].flatMap(codePoints => [
String.fromCodePoint(...codePoints.slice(0, i)),
// Leading ASCII upper case character.
"A" + String.fromCodePoint(...codePoints.slice(0, i)),
// Leading ASCII lower case character.
"a" + String.fromCodePoint(...codePoints.slice(0, i)),
// Leading Latin-1 upper case character.
"À" + String.fromCodePoint(...codePoints.slice(0, i)),
// Leading Latin-1 lower case character.
"à" + String.fromCodePoint(...codePoints.slice(0, i)),
// Leading Two-Byte upper case character.
"Ā" + String.fromCodePoint(...codePoints.slice(0, i)),
// Leading Two-Byte lower case character.
"ā" + String.fromCodePoint(...codePoints.slice(0, i)),
]).flatMap(x => [
x,
toRope(x),
newString(x, {twoByte: true}),
]);
const expected = strings.map(x => {
// Prevent Warp compilation when computing the expected results.
with ({}) ;
return x.toTitleCase();
});
for (let i = 0; i < 1000; ++i) {
let idx = i % strings.length;
let str = strings[idx];
let actual = str.toTitleCase();
if (actual !== expected[idx]) throw new Error();
}
}