LibJS: Implement Set.prototype.isSubsetOf

2025-07-26 23:37:36 +00:00 · 2022-12-01 22:49:50 +02:00 · 2022-12-01 22:49:50 +02:00 · e29be4eaa8
commit e29be4eaa8
parent e359eeabe8
4 changed files with 42 additions and 0 deletions
--- a/Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.isSubsetOf.js
+++ b/Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.isSubsetOf.js
@ -0,0 +1,8 @@
+test("basic functionality", () => {
+    expect(Set.prototype.isSubsetOf).toHaveLength(1);
+
+    const set1 = new Set(["a", "b", "c"]);
+    const set2 = new Set(["b", "c"]);
+    expect(set1.isSubsetOf(set2)).toBeFalse();
+    expect(set2.isSubsetOf(set1)).toBeTrue();
+});