Initialise empty results slice

With this change, if no groups are queried, an empty list is returned instead of null.

Signed-off-by: Tom van Dinther <[email protected]>

Author: tvandinther

fn.go

@@ -501,7 +501,7 @@ func (g *GraphQuery) validateUsers(ctx context.Context, client *msgraphsdk.Graph
 		return nil, errors.New("no users provided for validation")
 	}
 
-	var results []interface{}
+	results := make([]interface{}, 0)
 
 	for _, userPrincipalName := range in.Users {
 		if userPrincipalName == nil {
@@ -758,7 +758,7 @@ func (g *GraphQuery) getGroupObjectIDs(ctx context.Context, client *msgraphsdk.G
 		return nil, errors.New("no group names provided")
 	}
 
-	var results []interface{}
+	results := make([]interface{}, 0)
 
 	for _, groupName := range in.Groups {
 		if groupName == nil {
@@ -803,7 +803,7 @@ func (g *GraphQuery) getServicePrincipalDetails(ctx context.Context, client *msg
 		return nil, errors.New("no service principal names provided")
 	}
 
-	var results []interface{}
+	results := make([]interface{}, 0)
 
 	for _, spName := range in.ServicePrincipals {
 		if spName == nil {

input/v1beta1/input.go

@@ -69,7 +69,7 @@ type Input struct {
 
 	// FailOnEmpty controls whether the function should fail when input lists are empty.
 	// If true, the function will error on empty input lists.
-	// If false or unset, empty lists are valid and will result in a no-op.
+	// If false or unset, empty lists are valid and will result in an empty list at the target.
 	// +optional
 	FailOnEmpty *bool `json:"failOnEmpty,omitempty"`