add test

internal/utils/parameters.go

@@ -67,25 +67,6 @@ func BuildParameters(kubeClient client.Client, namespace string, parametersFrom
 	return params, parametersRaw, nil
 }
 
-// fetchParametersFromSource fetches data from a specified external source and
-// represents it in the parameters map format
-func fetchParametersFromSource(kubeClient client.Client, namespace string, parametersFrom *servicesv1.ParametersFromSource) (map[string]interface{}, error) {
-	var params map[string]interface{}
-	if parametersFrom.SecretKeyRef != nil {
-		data, err := fetchSecretKeyValue(kubeClient, namespace, parametersFrom.SecretKeyRef)
-		if err != nil {
-			return nil, err
-		}
-		p, err := unmarshalJSON(data)
-		if err != nil {
-			return nil, err
-		}
-		params = p
-
-	}
-	return params, nil
-}
-
 // UnmarshalRawParameters produces a map structure from a given raw YAML/JSON input
 func UnmarshalRawParameters(in []byte) (map[string]interface{}, error) {
 	parameters := make(map[string]interface{})
@@ -124,3 +105,22 @@ func fetchSecretKeyValue(kubeClient client.Client, namespace string, secretKeyRe
 	}
 	return secret.Data[secretKeyRef.Key], nil
 }
+
+// fetchParametersFromSource fetches data from a specified external source and
+// represents it in the parameters map format
+func fetchParametersFromSource(kubeClient client.Client, namespace string, parametersFrom *servicesv1.ParametersFromSource) (map[string]interface{}, error) {
+	var params map[string]interface{}
+	if parametersFrom.SecretKeyRef != nil {
+		data, err := fetchSecretKeyValue(kubeClient, namespace, parametersFrom.SecretKeyRef)
+		if err != nil {
+			return nil, err
+		}
+		p, err := unmarshalJSON(data)
+		if err != nil {
+			return nil, err
+		}
+		params = p
+
+	}
+	return params, nil
+}

internal/utils/parameters_test.go

@@ -0,0 +1,23 @@
+package utils
+
+import (
+	v1 "github.com/SAP/sap-btp-service-operator/api/v1"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+var _ = Describe("Parameters", func() {
+	Describe("BuildParameters", func() {
+		It("handles empty parameters", func() {
+			parametersFrom := []v1.ParametersFromSource{}
+			parameters := (*runtime.RawExtension)(nil)
+
+			params, rawParam, err := BuildParameters(nil, "", parametersFrom, parameters)
+
+			Expect(err).To(BeNil())
+			Expect(params).To(BeNil())
+			Expect(rawParam).To(BeNil())
+		})
+	})
+})