1 files changed, 127 insertions, 0 deletions
diff --git a/clientapi/clientapi_test.go b/clientapi/clientapi_test.go
index 2ff4b650..1b2f1358 100644
--- a/clientapi/clientapi_test.go
+++ b/clientapi/clientapi_test.go
@@ -2151,3 +2151,130 @@ func TestKeyBackup(t *testing.T) {
 		}
 	})
 }
+
+func TestGetMembership(t *testing.T) {
+	alice := test.NewUser(t)
+	bob := test.NewUser(t)
+
+	testCases := []struct {
+		name             string
+		roomID           string
+		user             *test.User
+		additionalEvents func(t *testing.T, room *test.Room)
+		request          func(t *testing.T, room *test.Room, accessToken string) *http.Request
+		wantOK           bool
+		wantMemberCount  int
+	}{
+
+		{
+			name: "/joined_members - Bob never joined",
+			user: bob,
+			request: func(t *testing.T, room *test.Room, accessToken string) *http.Request {
+				return test.NewRequest(t, "GET", fmt.Sprintf("/_matrix/client/v3/rooms/%s/joined_members", room.ID), test.WithQueryParams(map[string]string{
+					"access_token": accessToken,
+				}))
+			},
+			wantOK: false,
+		},
+		{
+			name: "/joined_members - Alice joined",
+			user: alice,
+			request: func(t *testing.T, room *test.Room, accessToken string) *http.Request {
+				return test.NewRequest(t, "GET", fmt.Sprintf("/_matrix/client/v3/rooms/%s/joined_members", room.ID), test.WithQueryParams(map[string]string{
+					"access_token": accessToken,
+				}))
+			},
+			wantOK:          true,
+			wantMemberCount: 1,
+		},
+		{
+			name: "/joined_members - Alice leaves, shouldn't be able to see members ",
+			user: alice,
+			request: func(t *testing.T, room *test.Room, accessToken string) *http.Request {
+				return test.NewRequest(t, "GET", fmt.Sprintf("/_matrix/client/v3/rooms/%s/joined_members", room.ID), test.WithQueryParams(map[string]string{
+					"access_token": accessToken,
+				}))
+			},
+			additionalEvents: func(t *testing.T, room *test.Room) {
+				room.CreateAndInsert(t, alice, spec.MRoomMember, map[string]interface{}{
+					"membership": "leave",
+				}, test.WithStateKey(alice.ID))
+			},
+			wantOK: false,
+		},
+		{
+			name: "/joined_members - Bob joins, Alice sees two members",
+			user: alice,
+			request: func(t *testing.T, room *test.Room, accessToken string) *http.Request {
+				return test.NewRequest(t, "GET", fmt.Sprintf("/_matrix/client/v3/rooms/%s/joined_members", room.ID), test.WithQueryParams(map[string]string{
+					"access_token": accessToken,
+				}))
+			},
+			additionalEvents: func(t *testing.T, room *test.Room) {
+				room.CreateAndInsert(t, bob, spec.MRoomMember, map[string]interface{}{
+					"membership": "join",
+				}, test.WithStateKey(bob.ID))
+			},
+			wantOK:          true,
+			wantMemberCount: 2,
+		},
+	}
+
+	test.WithAllDatabases(t, func(t *testing.T, dbType test.DBType) {
+
+		cfg, processCtx, close := testrig.CreateConfig(t, dbType)
+		routers := httputil.NewRouters()
+		cm := sqlutil.NewConnectionManager(processCtx, cfg.Global.DatabaseOptions)
+		caches := caching.NewRistrettoCache(128*1024*1024, time.Hour, caching.DisableMetrics)
+		defer close()
+		natsInstance := jetstream.NATSInstance{}
+		jsctx, _ := natsInstance.Prepare(processCtx, &cfg.Global.JetStream)
+		defer jetstream.DeleteAllStreams(jsctx, &cfg.Global.JetStream)
+
+		// Use an actual roomserver for this
+		rsAPI := roomserver.NewInternalAPI(processCtx, cfg, cm, &natsInstance, caches, caching.DisableMetrics)
+		rsAPI.SetFederationAPI(nil, nil)
+		userAPI := userapi.NewInternalAPI(processCtx, cfg, cm, &natsInstance, rsAPI, nil, caching.DisableMetrics, testIsBlacklistedOrBackingOff)
+
+		// We mostly need the rsAPI for this test, so nil for other APIs/caches etc.
+		AddPublicRoutes(processCtx, routers, cfg, &natsInstance, nil, rsAPI, nil, nil, nil, userAPI, nil, nil, caching.DisableMetrics)
+
+		accessTokens := map[*test.User]userDevice{
+			alice: {},
+			bob:   {},
+		}
+		createAccessTokens(t, accessTokens, userAPI, processCtx.Context(), routers)
+
+		for _, tc := range testCases {
+			t.Run(tc.name, func(t *testing.T) {
+				room := test.NewRoom(t, alice)
+				t.Cleanup(func() {
+					t.Logf("running cleanup for %s", tc.name)
+				})
+				// inject additional events
+				if tc.additionalEvents != nil {
+					tc.additionalEvents(t, room)
+				}
+				if err := api.SendEvents(context.Background(), rsAPI, api.KindNew, room.Events(), "test", "test", "test", nil, false); err != nil {
+					t.Fatalf("failed to send events: %v", err)
+				}
+
+				w := httptest.NewRecorder()
+				routers.Client.ServeHTTP(w, tc.request(t, room, accessTokens[tc.user].accessToken))
+				if w.Code != 200 && tc.wantOK {
+					t.Logf("%s", w.Body.String())
+					t.Fatalf("got HTTP %d want %d", w.Code, 200)
+				}
+				t.Logf("[%s] Resp: %s", tc.name, w.Body.String())
+
+				// check we got the expected events
+				if tc.wantOK {
+					memberCount := len(gjson.GetBytes(w.Body.Bytes(), "joined").Map())
+					if memberCount != tc.wantMemberCount {
+						t.Fatalf("expected %d members, got %d", tc.wantMemberCount, memberCount)
+					}
+				}
+			})
+		}
+	})
+}