addressing nil results in jq

pkg/bundle/environment_variable_test.go

@@ -77,3 +77,23 @@ func TestMultipleValues(t *testing.T) {
 		t.Errorf("Wanted %s but got %s", want, asJSON)
 	}
 }
+
+func TestNilResult(t *testing.T) {
+	query := map[string]string{
+		"DATABASE_URL": ".connections.postgres.data.authentication.userName",
+	}
+
+	got := bundle.ParseEnvironmentVariables(params, query)
+
+	asJSON, err := json.Marshal(got)
+
+	if err != nil {
+		t.Fatalf("Failed to unmarshal result")
+	}
+
+	want := "{\"DATABASE_URL\":{\"error\":\"failed to produce a result\",\"value\":\"\"}}"
+
+	if string(asJSON) != want {
+		t.Errorf("Wanted %s but got %s", want, asJSON)
+	}
+}

pkg/bundle/environment_variables.go

@@ -32,21 +32,25 @@ func ParseEnvironmentVariables(params map[string]interface{}, query map[string]s
 		for {
 			v, ok := iter.Next()
 
-			if !ok || v == nil {
-				result.Error = "Failed to return a result"
-				results[k] = result
+			if !ok {
 				break
 			}
 
 			if valueErr, valOk := v.(error); valOk {
 				result.Error = fmt.Sprint(valueErr)
 				results[k] = result
-				break
+				continue
 			}
 			ofType := reflect.TypeOf(v)
 
 			var castValue string
 
+			if ofType == nil {
+				result.Error = "failed to produce a result"
+				results[k] = result
+				continue
+			}
+
 			switch ofType.Kind() {
 			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
 				castValue = fmt.Sprintf("%d", v)