17087ac4a2
We were translating the pattern [\⪾-\⫀] to [\\u2abe-\\u2ac0], which is a very different pattern; as a code unit converted to the \uhhh format has no meaning when escaped, this commit makes us simply skip escaping it when translating the pattern.
68 lines
2.3 KiB
JavaScript
68 lines
2.3 KiB
JavaScript
describe("errors", () => {
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test("invalid pattern", () => {
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expect(() => {
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RegExp("[");
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}).toThrowWithMessage(
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SyntaxError,
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"RegExp compile error: Error during parsing of regular expression:"
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);
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});
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test("invalid flag", () => {
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expect(() => {
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RegExp("", "x");
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}).toThrowWithMessage(SyntaxError, "Invalid RegExp flag 'x'");
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});
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test("repeated flag", () => {
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expect(() => {
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RegExp("", "gg");
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}).toThrowWithMessage(SyntaxError, "Repeated RegExp flag 'g'");
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});
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});
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test("basic functionality", () => {
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expect(RegExp().toString()).toBe("/(?:)/");
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expect(RegExp(undefined).toString()).toBe("/(?:)/");
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expect(RegExp("foo").toString()).toBe("/foo/");
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expect(RegExp("foo", undefined).toString()).toBe("/foo/");
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expect(RegExp("foo", "g").toString()).toBe("/foo/g");
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expect(RegExp(undefined, "g").toString()).toBe("/(?:)/g");
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});
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test("regexp object as pattern parameter", () => {
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expect(RegExp(/foo/).toString()).toBe("/foo/");
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expect(RegExp(/foo/g).toString()).toBe("/foo/g");
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expect(RegExp(/foo/g, "").toString()).toBe("/foo/");
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expect(RegExp(/foo/g, "y").toString()).toBe("/foo/y");
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var regex_like_object_without_flags = {
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source: "foo",
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[Symbol.match]: function () {},
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};
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expect(RegExp(regex_like_object_without_flags).toString()).toBe("/foo/");
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expect(RegExp(regex_like_object_without_flags, "y").toString()).toBe("/foo/y");
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var regex_like_object_with_flags = {
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source: "foo",
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flags: "g",
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[Symbol.match]: function () {},
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};
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expect(RegExp(regex_like_object_with_flags).toString()).toBe("/foo/g");
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expect(RegExp(regex_like_object_with_flags, "").toString()).toBe("/foo/");
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expect(RegExp(regex_like_object_with_flags, "y").toString()).toBe("/foo/y");
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});
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test("regexp literals are re-useable", () => {
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for (var i = 0; i < 2; ++i) {
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const re = /test/;
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expect(re.test("te")).toBeFalse();
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expect(re.test("test")).toBeTrue();
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}
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});
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test("Incorrectly escaped code units not converted to invalid patterns", () => {
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const re = /[\⪾-\⫀]/;
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expect(re.test("⫀")).toBeTrue();
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expect(re.test("\\u2abe")).toBeFalse(); // ⫀ is \u2abe
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});
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