Resolve "Delete the store files after the unit testing"

Description

Fixed issue described in #221 (closed). Also fixed an additional issue with pnds and a toml file after running the whole test suite.

controller/api/api_test.go

@@ -2,12 +2,15 @@ package api
 
 import (
 	"context"
+	"os"
+	"path/filepath"
 	"testing"
 
 	ppb "code.fbi.h-da.de/danet/gosdn/api/go/gosdn/pnd"
 	spb "code.fbi.h-da.de/danet/gosdn/api/go/gosdn/southbound"
 	tpb "code.fbi.h-da.de/danet/gosdn/api/go/gosdn/transport"
 	"code.fbi.h-da.de/danet/gosdn/controller/nucleus"
+	"code.fbi.h-da.de/danet/gosdn/controller/store"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/viper"
 )
@@ -28,7 +31,34 @@ func Test_GetIds(t *testing.T) {
 	log.Info(resp)
 }
 
+func ensureFilesForTestsAreRemoved() {
+	ensureStoreFileForTestsIsRemoved(store.SbiFilenameSuffix)
+	ensureStoreFileForTestsIsRemoved(store.DeviceFilenameSuffix)
+}
+
+func ensureStoreFileForTestsIsRemoved(storeName string) {
+	if err := store.EnsureFilesystemStorePathExists(storeName); err != nil {
+		log.Println(err)
+	}
+
+	wildcartFilename := "*" + storeName
+	path := store.GetCompletePathToFileStore(wildcartFilename)
+
+	files, err := filepath.Glob(path)
+
+	if err != nil {
+		log.Println(err)
+	}
+	for _, f := range files {
+		if err := os.Remove(f); err != nil {
+			log.Println(err)
+		}
+	}
+}
+
 func Test_AddPnd(t *testing.T) {
+	defer ensureFilesForTestsAreRemoved()
+
 	sbi, err := nucleus.NewSBI(spb.Type_TYPE_OPENCONFIG)
 	if err != nil {
 		t.Errorf("AddPnd() error = %v", err)