Adding guest accounts count telemetry (#14257)

* Adding guest accounts count telemetry

* Adding missed methods to the opentracing an timer layer

store/storetest/mocks/UserStore.go

@@ -38,6 +38,29 @@ func (_m *UserStore) AnalyticsActiveCount(time int64, options model.UserCountOpt
 	return r0, r1
 }
 
+// AnalyticsGetGuestCount provides a mock function with given fields:
+func (_m *UserStore) AnalyticsGetGuestCount() (int64, *model.AppError) {
+	ret := _m.Called()
+
+	var r0 int64
+	if rf, ok := ret.Get(0).(func() int64); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(int64)
+	}
+
+	var r1 *model.AppError
+	if rf, ok := ret.Get(1).(func() *model.AppError); ok {
+		r1 = rf()
+	} else {
+		if ret.Get(1) != nil {
+			r1 = ret.Get(1).(*model.AppError)
+		}
+	}
+
+	return r0, r1
+}
+
 // AnalyticsGetInactiveUsersCount provides a mock function with given fields:
 func (_m *UserStore) AnalyticsGetInactiveUsersCount() (int64, *model.AppError) {
 	ret := _m.Called()

store/storetest/user_store.go

@@ -38,6 +38,7 @@ func TestUserStore(t *testing.T, ss store.Store, s SqlSupplier) {
 	t.Run("AnalyticsActiveCount", func(t *testing.T) { testUserStoreAnalyticsActiveCount(t, ss, s) })
 	t.Run("AnalyticsGetInactiveUsersCount", func(t *testing.T) { testUserStoreAnalyticsGetInactiveUsersCount(t, ss) })
 	t.Run("AnalyticsGetSystemAdminCount", func(t *testing.T) { testUserStoreAnalyticsGetSystemAdminCount(t, ss) })
+	t.Run("AnalyticsGetGuestCount", func(t *testing.T) { testUserStoreAnalyticsGetGuestCount(t, ss) })
 	t.Run("Save", func(t *testing.T) { testUserStoreSave(t, ss) })
 	t.Run("Update", func(t *testing.T) { testUserStoreUpdate(t, ss) })
 	t.Run("UpdateUpdateAt", func(t *testing.T) { testUserStoreUpdateUpdateAt(t, ss) })
@@ -3162,6 +3163,42 @@ func testUserStoreAnalyticsGetSystemAdminCount(t *testing.T, ss store.Store) {
 
 }
 
+func testUserStoreAnalyticsGetGuestCount(t *testing.T, ss store.Store) {
+	countBefore, err := ss.User().AnalyticsGetSystemAdminCount()
+	require.Nil(t, err)
+
+	u1 := model.User{}
+	u1.Email = MakeEmail()
+	u1.Username = model.NewId()
+	u1.Roles = "system_user system_admin"
+
+	u2 := model.User{}
+	u2.Email = MakeEmail()
+	u2.Username = model.NewId()
+	u2.Roles = "system_user"
+
+	u3 := model.User{}
+	u3.Email = MakeEmail()
+	u3.Username = model.NewId()
+	u3.Roles = "system_guest"
+
+	_, err = ss.User().Save(&u1)
+	require.Nil(t, err, "couldn't save user")
+	defer func() { require.Nil(t, ss.User().PermanentDelete(u1.Id)) }()
+
+	_, err = ss.User().Save(&u2)
+	require.Nil(t, err, "couldn't save user")
+	defer func() { require.Nil(t, ss.User().PermanentDelete(u2.Id)) }()
+
+	_, err = ss.User().Save(&u3)
+	require.Nil(t, err, "couldn't save user")
+	defer func() { require.Nil(t, ss.User().PermanentDelete(u3.Id)) }()
+
+	result, err := ss.User().AnalyticsGetSystemAdminCount()
+	require.Nil(t, err)
+	require.Equal(t, countBefore+1, result, "Did not get the expected number of system admins.")
+}
+
 func testUserStoreGetProfilesNotInTeam(t *testing.T, ss store.Store) {
 	team, err := ss.Team().Save(&model.Team{
 		DisplayName: "Team",