[test262] Add set method tests to staging

test/staging/set-methods/set-intersect-other-is-set-like.js

@@ -0,0 +1,31 @@
+// Copyright (C) 2023 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: test intersection method when `other` is a set-like.
+features: [set-methods]
+includes: [compareArray.js]
+---*/
+
+const SetLike = {
+    arr: [42, 43, 45],
+    size: 3,
+        keys() {
+            return this.arr[Symbol.iterator]();
+        },
+        has(key) {
+            return this.arr.indexOf(key) != -1;
+        }
+    };
+
+const firstSet = new Set();
+firstSet.add(42);
+firstSet.add(43);
+
+const resultSet = new Set();
+resultSet.add(42);
+resultSet.add(43);
+
+const resultArray = Array.from(resultSet);
+const intersectionArray = Array.from(firstSet.intersection(SetLike));
+
+assert.compareArray(resultArray, intersectionArray);

test/staging/set-methods/set-intersection-other-is-map.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2023 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: test intersection method when `other` is a map.
+features: [set-methods]
+includes: [compareArray.js]
+---*/
+
+const firstSet = new Set();
+firstSet.add(42);
+firstSet.add(43);
+
+const other = new Map();
+other.set(42);
+other.set(46);
+other.set(47);
+
+const resultSet = new Set();
+resultSet.add(42);
+
+const resultArray = Array.from(resultSet);
+const intersectionArray = Array.from(firstSet.intersection(other));
+
+assert.compareArray(resultArray, intersectionArray);

test/staging/set-methods/set-intersection-other-is-set.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2023 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: test intersection method when `other` is a set.
+features: [set-methods]
+includes: [compareArray.js]
+---*/
+
+const firstSet = new Set();
+firstSet.add(42);
+firstSet.add(43);
+firstSet.add(44);
+
+const otherSet = new Set();
+otherSet.add(42);
+otherSet.add(45);
+
+const resultSet = new Set();
+resultSet.add(42);
+
+const resultArray = Array.from(resultSet);
+const intersectionArray = Array.from(firstSet.intersection(otherSet));
+
+assert.compareArray(resultArray, intersectionArray);