Right panel: view third party invite info without clearing history (#11934)

* add View3pidInvite to actions enum, replace uses

* extract out action handler

* push card instead, test

* comment

test/stores/right-panel/action-handlers/View3pidInvite-test.ts

@@ -0,0 +1,58 @@
+/*
+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 { MockedObject } from "jest-mock";
+import { EventType, MatrixEvent } from "matrix-js-sdk/src/matrix";
+
+import { Action } from "../../../../src/dispatcher/actions";
+import { onView3pidInvite } from "../../../../src/stores/right-panel/action-handlers";
+import RightPanelStore from "../../../../src/stores/right-panel/RightPanelStore";
+import { RightPanelPhases } from "../../../../src/stores/right-panel/RightPanelStorePhases";
+
+describe("onView3pidInvite()", () => {
+    let rightPanelStore!: MockedObject<RightPanelStore>;
+
+    beforeEach(() => {
+        rightPanelStore = {
+            pushCard: jest.fn(),
+            showOrHidePanel: jest.fn(),
+        } as unknown as MockedObject<RightPanelStore>;
+    });
+
+    it("should display room member list when payload has a falsy event", () => {
+        const payload = {
+            action: Action.View3pidInvite,
+        };
+        onView3pidInvite(payload, rightPanelStore);
+
+        expect(rightPanelStore.showOrHidePanel).toHaveBeenCalledWith(RightPanelPhases.RoomMemberList);
+        expect(rightPanelStore.pushCard).not.toHaveBeenCalled();
+    });
+
+    it("should push a 3pid member card on the right panel stack when payload has an event", () => {
+        const payload = {
+            action: Action.View3pidInvite,
+            event: new MatrixEvent({ type: EventType.RoomThirdPartyInvite }),
+        };
+        onView3pidInvite(payload, rightPanelStore);
+
+        expect(rightPanelStore.showOrHidePanel).not.toHaveBeenCalled();
+        expect(rightPanelStore.pushCard).toHaveBeenCalledWith({
+            phase: RightPanelPhases.Room3pidMemberInfo,
+            state: { memberInfoEvent: payload.event },
+        });
+    });
+});