23 lines
735 B
JavaScript
23 lines
735 B
JavaScript
import { isIdentifierName } from "..";
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describe("isIdentifierName", function () {
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it("returns false if provided string is empty", function () {
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expect(isIdentifierName("")).toBe(false);
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});
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it.each(["hello", "$", "ゆゆ式", "$20", "hello20", "_", "if"])(
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"returns true if provided string %p is an IdentifierName",
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function (word) {
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expect(isIdentifierName(word)).toBe(true);
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},
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);
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it.each(["+hello", "0$", "-ゆゆ式", "#_", "_#"])(
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"returns false if provided string %p is not an IdentifierName",
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function (word) {
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expect(isIdentifierName(word)).toBe(false);
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},
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);
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it("supports astral symbols", function () {
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expect(isIdentifierName("x\uDB40\uDDD5")).toBe(true);
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});
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});
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