mirror of https://github.com/tc39/test262.git
33 lines
915 B
JavaScript
33 lines
915 B
JavaScript
function buildString({ loneCodePoints, ranges }) {
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const CHUNK_SIZE = 10000;
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let result = String.fromCodePoint(...loneCodePoints);
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for (const [start, end] of ranges) {
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const codePoints = [];
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for (let length = 0, codePoint = start; codePoint <= end; codePoint++) {
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codePoints[length++] = codePoint;
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if (length === CHUNK_SIZE) {
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result += String.fromCodePoint(...codePoints);
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codePoints.length = length = 0;
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}
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}
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result += String.fromCodePoint(...codePoints);
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}
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return result;
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}
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function testPropertyEscapes(regex, string, expression) {
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if (!regex.test(string)) {
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for (const symbol of string) {
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const hex = symbol
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.codePointAt(0)
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.toString(16)
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.toUpperCase()
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.padStart(6, "0");
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assert(
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regex.test(symbol),
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`\`${ expression }\` should match U+${ hex } (\`${ symbol }\`)`
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);
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}
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}
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}
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