refs #1096 Reject duplicated status when append statuses in Lists

spec/renderer/unit/store/TimelineSpace/Contents/Lists/Show.spec.ts

@@ -85,29 +85,6 @@ const status2: Status = {
   pinned: null
 }
 
-describe('TimelineSpace/Contents/Lists/Show', () => {
-  describe('mutations', () => {
-    let state: ShowState
-
-    describe('deleteToot', () => {
-      describe('message is not reblogged', () => {
-        beforeEach(() => {
-          state = {
-            lazyLoading: false,
-            heading: true,
-            timeline: [status2, status1],
-            unreadTimeline: [],
-            filter: ''
-          }
-        })
-        it('should be deleted', () => {
-          Show.mutations![MUTATION_TYPES.DELETE_TOOT](state, status1.id)
-          expect(state.timeline).toEqual([status2])
-        })
-      })
-
-      describe('message is reblogged', () => {
-        beforeEach(() => {
 const rebloggedStatus: Status = {
   id: '3',
   uri: 'http://example.com',
@@ -139,6 +116,30 @@ describe('TimelineSpace/Contents/Lists/Show', () => {
   language: null,
   pinned: null
 }
+
+describe('TimelineSpace/Contents/Lists/Show', () => {
+  describe('mutations', () => {
+    let state: ShowState
+
+    describe('deleteToot', () => {
+      describe('message is not reblogged', () => {
+        beforeEach(() => {
+          state = {
+            lazyLoading: false,
+            heading: true,
+            timeline: [status2, status1],
+            unreadTimeline: [],
+            filter: ''
+          }
+        })
+        it('should be deleted', () => {
+          Show.mutations![MUTATION_TYPES.DELETE_TOOT](state, status1.id)
+          expect(state.timeline).toEqual([status2])
+        })
+      })
+
+      describe('message is reblogged', () => {
+        beforeEach(() => {
           state = {
             lazyLoading: false,
             heading: true,
@@ -153,5 +154,79 @@ describe('TimelineSpace/Contents/Lists/Show', () => {
         })
       })
     })
+
+    describe('appendTimeline', () => {
+      describe('heading', () => {
+        describe('normal', () => {
+          beforeEach(() => {
+            state = {
+              lazyLoading: false,
+              heading: true,
+              timeline: [status2, status1],
+              unreadTimeline: [],
+              filter: ''
+            }
+          })
+          it('should be updated timeline', () => {
+            Show.mutations![MUTATION_TYPES.APPEND_TIMELINE](state, rebloggedStatus)
+            expect(state.timeline).toEqual([rebloggedStatus, status2, status1])
+            expect(state.unreadTimeline).toEqual([])
+          })
+        })
+
+        describe('duplicated status', () => {
+          beforeEach(() => {
+            state = {
+              lazyLoading: false,
+              heading: true,
+              timeline: [rebloggedStatus, status2, status1],
+              unreadTimeline: [],
+              filter: ''
+            }
+          })
+          it('should not be updated timeline', () => {
+            Show.mutations![MUTATION_TYPES.APPEND_TIMELINE](state, rebloggedStatus)
+            expect(state.timeline).toEqual([rebloggedStatus, status2, status1])
+            expect(state.unreadTimeline).toEqual([])
+          })
+        })
+      })
+
+      describe('not heading', () => {
+        describe('normal', () => {
+          beforeEach(() => {
+            state = {
+              lazyLoading: false,
+              heading: false,
+              timeline: [status2, status1],
+              unreadTimeline: [],
+              filter: ''
+            }
+          })
+          it('should be updated timeline', () => {
+            Show.mutations![MUTATION_TYPES.APPEND_TIMELINE](state, rebloggedStatus)
+            expect(state.timeline).toEqual([status2, status1])
+            expect(state.unreadTimeline).toEqual([rebloggedStatus])
+          })
+        })
+
+        describe('duplicated status', () => {
+          beforeEach(() => {
+            state = {
+              lazyLoading: false,
+              heading: false,
+              timeline: [rebloggedStatus, status2, status1],
+              unreadTimeline: [],
+              filter: ''
+            }
+          })
+          it('should not be updated timeline', () => {
+            Show.mutations![MUTATION_TYPES.APPEND_TIMELINE](state, rebloggedStatus)
+            expect(state.timeline).toEqual([rebloggedStatus, status2, status1])
+            expect(state.unreadTimeline).toEqual([])
+          })
+        })
+      })
+    })
   })
 })

src/renderer/store/TimelineSpace/Contents/Lists/Show.ts

@@ -39,11 +39,14 @@ const mutations: MutationTree<ShowState> = {
     state.heading = value
   },
   [MUTATION_TYPES.APPEND_TIMELINE]: (state, update: Status) => {
+    // Reject duplicated status in timeline
+    if (!state.timeline.find(item => item.id === update.id) && !state.unreadTimeline.find(item => item.id === update.id)) {
       if (state.heading) {
         state.timeline = [update].concat(state.timeline)
       } else {
         state.unreadTimeline = [update].concat(state.unreadTimeline)
       }
+    }
   },
   [MUTATION_TYPES.UPDATE_TIMELINE]: (state, timeline: Array<Status>) => {
     state.timeline = timeline