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LibJS: Implement Set.prototype.intersection

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Idan Horowitz 2022-12-01 22:17:43 +02:00 • committed by Linus Groh
parent fee65f6453
commit 9e693304ff
4 changed files with 95 additions and 0 deletions
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12
Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.intersection.js Normal file
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test("basic functionality", () => {
expect(Set.prototype.intersection).toHaveLength(1);
const set1 = new Set(["a", "b", "c"]);
const set2 = new Set(["b", "c", "d", "e"]);
const intersection1to2 = set1.intersection(set2);
const intersection2to1 = set2.intersection(set1);
for (const intersectionSet of [intersection1to2, intersection2to1]) {
expect(intersectionSet).toHaveSize(2);
["b", "c"].forEach(value => expect(intersectionSet.has(value)).toBeTrue());
}
});