allow signal indices to start at 0 instead of 1

database/testdata.json

@@ -353,43 +353,43 @@
       "name": "outSignal_A",
       "direction": "out",
       "unit": "V",
-      "index": 1
+      "index": 0
     },
     {
       "name": "outSignal_B",
       "direction": "out",
       "unit": "V",
-      "index": 2
+      "index": 1
     },
     {
       "name": "outSignal_C",
       "direction": "out",
       "unit": "---",
-      "index": 3
+      "index": 2
     },
     {
       "name": "outSignal_D",
       "direction": "out",
       "unit": "---",
-      "index": 4
+      "index": 3
     },
     {
       "name": "outSignal_E",
       "direction": "out",
       "unit": "---",
-      "index": 5
+      "index": 4
     },
     {
       "name": "inSignal_A",
       "direction": "in",
       "unit": "---",
-      "index": 1
+      "index": 0
     },
     {
       "name": "inSignal_B",
       "direction": "in",
       "unit": "---",
-      "index": 2
+      "index": 1
     }
 
   ]

routes/signal/signal_test.go

@@ -44,7 +44,7 @@ var router *gin.Engine
 type SignalRequest struct {
 	Name          string  `json:"name,omitempty"`
 	Unit          string  `json:"unit,omitempty"`
-	Index         uint    `json:"index,omitempty"`
+	Index         *uint   `json:"index,omitempty"`
 	Direction     string  `json:"direction,omitempty"`
 	ScalingFactor float32 `json:"scalingFactor,omitempty"`
 	ConfigID      uint    `json:"configID,omitempty"`
@@ -76,11 +76,14 @@ type ScenarioRequest struct {
 	StartParameters postgres.Jsonb `json:"startParameters,omitempty"`
 }
 
+var signalIndex0 uint = 0
+var signalIndex1 uint = 1
+
 var newSignal1 = SignalRequest{
 	Name:      "outSignal_A",
 	Unit:      "V",
 	Direction: "out",
-	Index:     1,
+	Index:     &signalIndex0,
 }
 
 func newFalse() *bool {
@@ -226,6 +229,7 @@ func TestAddSignal(t *testing.T) {
 		"/api/v2/signals", "POST", helper.KeyModels{"signal": newSignal1})
 	assert.NoError(t, err)
 	assert.Equalf(t, 200, code, "Response body: \n%v\n", resp)
+	fmt.Println(resp)
 
 	// Compare POST's response with the newSignal
 	err = helper.CompareResponse(resp, helper.KeyModels{"signal": newSignal1})
@@ -296,7 +300,7 @@ func TestUpdateSignal(t *testing.T) {
 	updatedSignal := SignalRequest{
 		Name:  "outSignal_B",
 		Unit:  "A",
-		Index: 1,
+		Index: &signalIndex1,
 	}
 
 	// authenticate as normal userB who has no access to new scenario
@@ -379,7 +383,7 @@ func TestDeleteSignal(t *testing.T) {
 		Name:      "insignalA",
 		Unit:      "s",
 		Direction: "in",
-		Index:     1,
+		Index:     &signalIndex0,
 		ConfigID:  configID,
 	}
 	code, resp, err := helper.TestEndpoint(router, token,
@@ -470,7 +474,7 @@ func TestGetAllInputSignalsOfConfig(t *testing.T) {
 		Name:      "inA",
 		Unit:      "s",
 		Direction: "in",
-		Index:     1,
+		Index:     &signalIndex0,
 		ConfigID:  configID,
 	}
 	code, resp, err := helper.TestEndpoint(router, token,
@@ -483,7 +487,7 @@ func TestGetAllInputSignalsOfConfig(t *testing.T) {
 		Name:      "inB",
 		Unit:      "m",
 		Direction: "in",
-		Index:     2,
+		Index:     &signalIndex1,
 		ConfigID:  configID,
 	}
 	code, resp, err = helper.TestEndpoint(router, token,
@@ -503,7 +507,7 @@ func TestGetAllInputSignalsOfConfig(t *testing.T) {
 		Name:      "outB",
 		Unit:      "A",
 		Direction: "out",
-		Index:     1,
+		Index:     &signalIndex1,
 		ConfigID:  configID,
 	}
 	code, resp, err = helper.TestEndpoint(router, token,

routes/signal/signal_validators.go

@@ -30,7 +30,7 @@ var validate *validator.Validate
 type validNewSignal struct {
 	Name          string  `form:"Name" validate:"required"`
 	Unit          string  `form:"unit" validate:"omitempty"`
-	Index         uint    `form:"index" validate:"required"`
+	Index         *uint   `form:"index" validate:"required"`
 	Direction     string  `form:"direction" validate:"required,oneof=in out"`
 	ScalingFactor float32 `form:"scalingFactor" validate:"omitempty"`
 	ConfigID      uint    `form:"configID" validate:"required"`
@@ -39,7 +39,7 @@ type validNewSignal struct {
 type validUpdatedSignal struct {
 	Name          string  `form:"Name" validate:"omitempty"`
 	Unit          string  `form:"unit" validate:"omitempty"`
-	Index         uint    `form:"index" validate:"omitempty"`
+	Index         *uint   `form:"index" validate:"omitempty"`
 	ScalingFactor float32 `form:"scalingFactor" validate:"omitempty"`
 }
 
@@ -68,7 +68,7 @@ func (r *addSignalRequest) createSignal() Signal {
 
 	s.Name = r.Signal.Name
 	s.Unit = r.Signal.Unit
-	s.Index = r.Signal.Index
+	s.Index = *r.Signal.Index
 	s.Direction = r.Signal.Direction
 	s.ScalingFactor = r.Signal.ScalingFactor
 	s.ConfigID = r.Signal.ConfigID
@@ -80,18 +80,9 @@ func (r *updateSignalRequest) updatedSignal(oldSignal Signal) Signal {
 	// Use the old Signal as a basis for the updated Signal `s`
 	s := oldSignal
 
-	if r.Signal.Name != "" {
+	s.Name = r.Signal.Name
-		s.Name = r.Signal.Name
+	s.Index = *r.Signal.Index
-	}
+	s.Unit = r.Signal.Unit
-
-	if r.Signal.Index != 0 {
-		// TODO this implies that we start indexing at 1
-		s.Index = r.Signal.Index
-	}
-
-	if r.Signal.Unit != "" {
-		s.Unit = r.Signal.Unit
-	}
 
 	if r.Signal.ScalingFactor != 0 {
 		// scaling factor of 0 is not allowed

routes/user/user_test.go

@@ -1586,17 +1586,19 @@ func addSignals(token string) error {
 	type SignalRequest struct {
 		Name          string  `json:"name,omitempty"`
 		Unit          string  `json:"unit,omitempty"`
-		Index         uint    `json:"index,omitempty"`
+		Index         *uint   `json:"index,omitempty"`
 		Direction     string  `json:"direction,omitempty"`
 		ScalingFactor float32 `json:"scalingFactor,omitempty"`
 		ConfigID      uint    `json:"configID,omitempty"`
 	}
 
+	var signalIndex0 uint = 0
+	var signalIndex1 uint = 1
 	var newSignalOut = SignalRequest{
 		Name:      "outSignal_A",
 		Unit:      "V",
 		Direction: "out",
-		Index:     1,
+		Index:     &signalIndex0,
 		ConfigID:  1,
 	}
 
@@ -1604,7 +1606,7 @@ func addSignals(token string) error {
 		Name:      "inSignal_A",
 		Unit:      "V",
 		Direction: "in",
-		Index:     2,
+		Index:     &signalIndex1,
 		ConfigID:  1,
 	}