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test("hex escapes", () => {
expect("\x55").toBe("U");
expect("X55").toBe("X55");
expect(`\x55`).toBe("U");
expect(`\X55`).toBe("X55");
expect("\xff").toBe(String.fromCharCode(0xff));
expect("'\\x'").not.toEval();
expect("'\\x1'").not.toEval();
expect("'\\xz'").not.toEval();
expect("'\\xzz'").not.toEval();
expect("'\\x🐞'").not.toEval();
});
test("unicode escapes", () => {
expect("\u26a0").toBe("⚠");
expect(`\u26a0`).toBe("⚠");
expect("\u{1f41e}").toBe("🐞");
expect(`\u{1f41e}`).toBe("🐞");
expect("\u00ff").toBe(String.fromCharCode(0xff));
expect("'\\u'").not.toEval();
expect("'\\u1'").not.toEval();
expect("'\\uf'").not.toEval();
expect("'\\u123'").not.toEval();
expect("'\\u123z'").not.toEval();
expect("'\\uz'").not.toEval();
expect("'\\uzz'").not.toEval();
expect("'\\uzzzz'").not.toEval();
expect("'\\u{'").not.toEval();
expect("'\\u{}'").not.toEval();
expect("'\\u{z}'").not.toEval();
expect("'\\u🐞'").not.toEval();
});
describe("octal escapes", () => {
test("basic functionality", () => {
expect("\1").toBe("\u0001");
expect("\2").toBe("\u0002");
expect("\3").toBe("\u0003");
expect("\4").toBe("\u0004");
expect("\5").toBe("\u0005");
expect("\6").toBe("\u0006");
expect("\7").toBe("\u0007");
// prettier-ignore
expect("\8").toBe("8");
// prettier-ignore
expect("\9").toBe("9");
expect("\128").toBe("\n8");
expect("\141bc").toBe("abc");
expect("f\157o\142a\162").toBe("foobar");
expect("\123\145\162\145\156\151\164\171\117\123").toBe("SerenityOS");
});
test("syntax error in template literal", () => {
expect("`\\123`").not.toEval();
});
test("syntax error in strict mode", () => {
expect("'use strict'; '\\123'").not.toEval();
expect('"use strict"; "\\123"').not.toEval();
// Special case, string literal precedes use strict directive
expect("'\\123'; somethingElse; 'use strict'").not.toEval();
});
});
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