LibJS: Disallow negative set record sizes

This is a normative change in the Set Methods proposal. See:
4155e6e

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.difference.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().difference({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.difference).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.intersection.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().intersection({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.intersection).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.isDisjointFrom.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().isDisjointFrom({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.isDisjointFrom).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.isSubsetOf.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().isSubsetOf({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.isSubsetOf).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.isSupersetOf.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().isSupersetOf({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.isSupersetOf).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.symmetricDifference.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().symmetricDifference({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.symmetricDifference).toHaveLength(1);
 

Userland/Libraries/LibJS/Tests/builtins/Set/Set.prototype.union.js

@@ -1,3 +1,11 @@
+describe("errors", () => {
+    test("called with negative size", () => {
+        expect(() => {
+            new Set().union({ size: -1 });
+        }).toThrowWithMessage(RangeError, "size must not be negative");
+    });
+});
+
 test("basic functionality", () => {
     expect(Set.prototype.union).toHaveLength(1);