Made further changes based on feedback

store/sql_preference_store.go

@@ -162,9 +162,9 @@ func (s SqlPreferenceStore) Get(userId string, category string, name string) Sto
 	go func() {
 		result := StoreResult{}
 
-		var preferences model.Preferences
+		var preference model.Preference
 
-		if _, err := s.GetReplica().Select(&preferences,
+		if err := s.GetReplica().SelectOne(&preference,
 			`SELECT
 				*
 			FROM
@@ -173,9 +173,9 @@ func (s SqlPreferenceStore) Get(userId string, category string, name string) Sto
 				UserId = :UserId
 				AND Category = :Category
 				AND Name = :Name`, map[string]interface{}{"UserId": userId, "Category": category, "Name": name}); err != nil {
-			result.Err = model.NewAppError("SqlPreferenceStore.GetByName", "We encounted an error while finding preferences", err.Error())
+			result.Err = model.NewAppError("SqlPreferenceStore.Get", "We encounted an error while finding preferences", err.Error())
 		} else {
-			result.Data = preferences[0]
+			result.Data = preference
 		}
 
 		storeChannel <- result

store/sql_preference_store_test.go

@@ -55,7 +55,7 @@ func TestPreferenceGet(t *testing.T) {
 
 	userId := model.NewId()
 	category := model.PREFERENCE_CATEGORY_DIRECT_CHANNEL_SHOW
-	name := model.PREFERENCE_NAME_TEST
+	name := model.NewId()
 
 	preferences := model.Preferences{
 		{
@@ -70,7 +70,7 @@ func TestPreferenceGet(t *testing.T) {
 		},
 		{
 			UserId:   userId,
-			Category: model.PREFERENCE_CATEGORY_TEST,
+			Category: model.NewId(),
 			Name:     name,
 		},
 		{
@@ -87,6 +87,11 @@ func TestPreferenceGet(t *testing.T) {
 	} else if data := result.Data.(model.Preference); data != preferences[0] {
 		t.Fatal("got incorrect preference")
 	}
+
+	// make sure getting a missing preference fails
+	if result := <-store.Preference().Get(model.NewId(), model.NewId(), model.NewId()); result.Err == nil {
+		t.Fatal("no error on getting a missing preference")
+	}
 }
 
 func TestPreferenceGetCategory(t *testing.T) {
@@ -111,7 +116,7 @@ func TestPreferenceGetCategory(t *testing.T) {
 		// same user/name, different category
 		{
 			UserId:   userId,
-			Category: model.PREFERENCE_CATEGORY_TEST,
+			Category: model.NewId(),
 			Name:     name,
 		},
 		// same name/category, different user
@@ -131,4 +136,11 @@ func TestPreferenceGetCategory(t *testing.T) {
 	} else if !((data[0] == preferences[0] && data[1] == preferences[1]) || (data[0] == preferences[1] && data[1] == preferences[0])) {
 		t.Fatal("got incorrect preferences")
 	}
+
+	// make sure getting a missing preference category doesn't fail
+	if result := <-store.Preference().GetCategory(model.NewId(), model.NewId()); result.Err != nil {
+		t.Fatal(result.Err)
+	} else if data := result.Data.(model.Preferences); len(data) != 0 {
+		t.Fatal("shouldn't have got any preferences")
+	}
 }