1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 07:47:35 +00:00

LibJS: Implement RegExp.prototype [ @@search ]

String.prototype.search is already implemented, but relies on the well-
known Symbol.search, which was not implemented.
This commit is contained in:
Timothy Flynn 2021-07-07 15:18:20 -04:00 committed by Linus Groh
parent aaf5339fae
commit 35a2ba8ed8
3 changed files with 97 additions and 0 deletions

View file

@ -0,0 +1,47 @@
test("basic functionality", () => {
expect(String.prototype.search).toHaveLength(1);
expect("hello friends".search("h")).toBe(0);
expect("hello friends".search("e")).toBe(1);
expect("hello friends".search("l")).toBe(2);
expect("hello friends".search("o")).toBe(4);
expect("hello friends".search("z")).toBe(-1);
expect("abc123def".search(/\d/)).toBe(3);
expect("abcdef".search(/\d/)).toBe(-1);
});
test("override exec with function", () => {
let calls = 0;
let re = /test/;
let oldExec = re.exec.bind(re);
re.exec = function (...args) {
++calls;
return oldExec(...args);
};
expect("test".search(re)).toBe(0);
expect(calls).toBe(1);
});
test("override exec with bad function", () => {
let calls = 0;
let re = /test/;
re.exec = function (...args) {
++calls;
return 4;
};
expect(() => {
"test".search(re);
}).toThrow(TypeError);
expect(calls).toBe(1);
});
test("override exec with non-function", () => {
let re = /test/;
re.exec = 3;
expect("test".search(re)).toBe(0);
});