mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-28 10:37:17 +02:00
1f4700a0c8
Cover the paths exercised by deferred regex compilation: - Invalid patterns in literals, eval(), and new Function() - Duplicate and invalid flags in literals - Valid literals with various flag combinations - Multiple literals in the same scope - Literals inside regular and arrow functions
63 lines
1.8 KiB
JavaScript
63 lines
1.8 KiB
JavaScript
test("invalid regex literal pattern is a syntax error", () => {
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expect("/[/").not.toEval();
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expect("/(/").not.toEval();
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expect("/(?/").not.toEval();
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expect("/\\p{Invalid}/u").not.toEval();
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});
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test("duplicate regex flags are a syntax error", () => {
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expect("/foo/gg").not.toEval();
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expect("/foo/ii").not.toEval();
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expect("/foo/gig").not.toEval();
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});
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test("invalid regex flag is a syntax error", () => {
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expect("/foo/x").not.toEval();
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expect("/foo/Q").not.toEval();
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});
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test("regex literal errors in eval", () => {
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expect(() => eval("/[/")).toThrow(SyntaxError);
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expect(() => eval("/foo/gg")).toThrow(SyntaxError);
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expect(() => eval("/foo/x")).toThrow(SyntaxError);
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});
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test("regex literal errors in new Function()", () => {
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expect(() => new Function("/[/")).toThrow(SyntaxError);
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expect(() => new Function("/foo/gg")).toThrow(SyntaxError);
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expect(() => new Function("/foo/x")).toThrow(SyntaxError);
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});
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test("valid regex literals parse and execute correctly", () => {
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expect("/foo/g").toEval();
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expect("/[a-z]+/gims").toEval();
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expect("/(?:abc)/u").toEval();
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expect("/hello world/").toEval();
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expect("/foo/dgimsuy").toEval();
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expect("/foo/v").toEval();
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});
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test("regex literals work inside functions", () => {
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function f() {
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return /foo/g;
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}
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expect(f().test("foo")).toBeTrue();
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expect(f().test("bar")).toBeFalse();
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});
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test("regex literals work inside arrow functions", () => {
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const f = () => /bar/i;
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expect(f().test("BAR")).toBeTrue();
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expect(f().test("baz")).toBeFalse();
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});
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test("multiple regex literals in the same scope", () => {
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const a = /abc/;
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const b = /def/g;
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const c = /ghi/i;
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expect(a.test("abc")).toBeTrue();
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expect(b.test("def")).toBeTrue();
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expect(c.test("GHI")).toBeTrue();
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expect(a.test("def")).toBeFalse();
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});
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