fix(draft): fix draft not sending if it wasn't saved first

spec-inbox/tasks/send-draft-spec.coffee

@@ -138,3 +138,37 @@ describe "SendDraftTask", ->
           expect(atom.inbox.makeRequest.calls.length).toBe(1)
           options = atom.inbox.makeRequest.mostRecentCall.args[0]
           expect(options.returnsModel).toBe(true)
+
+  describe "failing performRemote", ->
+    beforeEach ->
+      @draft = new Message
+        version: '1'
+        id: '1233123AEDF1'
+        namespaceId: 'A12ADE'
+        subject: 'New Draft'
+        draft: true
+        to:
+          name: 'Dummy'
+          email: 'dummy@inboxapp.com'
+      @task = new SendDraftTask(@draft)
+
+    it "throws an error if the draft can't be found", ->
+      spyOn(DatabaseStore, 'findByLocalId').andCallFake (klass, localId) ->
+        Promise.resolve()
+      waitsForPromise =>
+        @task.performRemote().catch (error) ->
+          expect(error.message).toBeDefined()
+
+    it "throws an error if the draft isn't saved", ->
+      spyOn(DatabaseStore, 'findByLocalId').andCallFake (klass, localId) ->
+        Promise.resolve(isSaved: false)
+      waitsForPromise =>
+        @task.performRemote().catch (error) ->
+          expect(error.message).toBeDefined()
+
+    it "throws an error if the DB store has issues", ->
+      spyOn(DatabaseStore, 'findByLocalId').andCallFake (klass, localId) ->
+        Promise.reject("DB error")
+      waitsForPromise =>
+        @task.performRemote().catch (error) ->
+          expect(error).toBe "DB error"

src/flux/tasks/send-draft.coffee

@@ -31,7 +31,7 @@ class SendDraftTask extends Task
       # recent draft version
       DatabaseStore.findByLocalId(Message, @draftLocalId).then (draft) ->
         # The draft may have been deleted by another task. Nothing we can do.
-        return resolve() unless draft
+        return reject(new Error("We couldn't find the saved draft. Please try again in a couple seconds")) unless draft
         return reject(new Error("Cannot send draft that is not saved!")) unless draft.isSaved()
 
         atom.inbox.makeRequest
@@ -46,6 +46,7 @@ class SendDraftTask extends Task
             Actions.postNotification({message: "Sent!", type: 'success'})
             DatabaseStore.unpersistModel(draft).then(resolve)
           error: reject
+      .catch(reject)
 
   onAPIError: ->
     msg = "Our server is having problems. Your messages has NOT been sent"