Add m.direct filter / validation (#10436)

test/utils/dm/filterValidMDirect-test.ts

@@ -0,0 +1,77 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { filterValidMDirect } from "../../../src/utils/dm/filterValidMDirect";
+
+const roomId1 = "!room1:example.com";
+const roomId2 = "!room2:example.com";
+const userId1 = "@user1:example.com";
+const userId2 = "@user2:example.com";
+const userId3 = "@user3:example.com";
+
+describe("filterValidMDirect", () => {
+    it("should return an empty object as valid content", () => {
+        expect(filterValidMDirect({})).toEqual({
+            valid: true,
+            filteredContent: {},
+        });
+    });
+
+    it("should return valid content", () => {
+        expect(
+            filterValidMDirect({
+                [userId1]: [roomId1, roomId2],
+                [userId2]: [roomId1],
+            }),
+        ).toEqual({
+            valid: true,
+            filteredContent: {
+                [userId1]: [roomId1, roomId2],
+                [userId2]: [roomId1],
+            },
+        });
+    });
+
+    it("should return an empy object for null", () => {
+        expect(filterValidMDirect(null)).toEqual({
+            valid: false,
+            filteredContent: {},
+        });
+    });
+
+    it("should return an empy object for a non-object", () => {
+        expect(filterValidMDirect(23)).toEqual({
+            valid: false,
+            filteredContent: {},
+        });
+    });
+
+    it("should only return valid content", () => {
+        const invalidContent = {
+            [userId1]: [23],
+            [userId2]: [roomId2],
+            [userId3]: "room1",
+        };
+
+        expect(filterValidMDirect(invalidContent)).toEqual({
+            valid: false,
+            filteredContent: {
+                [userId1]: [],
+                [userId2]: [roomId2],
+            },
+        });
+    });
+});