Add missing file.Close() for bdb and ndb (#43)

pkg/bdb/bdb.go

@@ -57,6 +57,10 @@ func Open(path string) (*BerkeleyDB, error) {
 	}, nil
 }
 
+func (db *BerkeleyDB) Close() error {
+	return db.file.Close()
+}
+
 func (db *BerkeleyDB) Read() <-chan dbi.Entry {
 	entries := make(chan dbi.Entry)
 

pkg/db/rpmdbinterface.go

@@ -7,4 +7,5 @@ type Entry struct {
 
 type RpmDBInterface interface {
 	Read() <-chan Entry
+	Close() error
 }

pkg/ndb/ndb.go

@@ -126,6 +126,10 @@ func Open(path string) (*RpmNDB, error) {
 	}, nil
 }
 
+func (db *RpmNDB) Close() error {
+	return db.file.Close()
+}
+
 func (db *RpmNDB) Read() <-chan dbi.Entry {
 	entries := make(chan dbi.Entry)
 

pkg/rpmdb.go

@@ -42,6 +42,10 @@ func Open(path string) (*RpmDB, error) {
 
 }
 
+func (d *RpmDB) Close() error {
+	return d.db.Close()
+}
+
 func (d *RpmDB) Package(name string) (*PackageInfo, error) {
 	pkgs, err := d.ListPackages()
 	if err != nil {

pkg/rpmdb_test.go

@@ -757,6 +757,9 @@ func TestRpmDB_Package(t *testing.T) {
 			got.GroupNames = nil
 
 			assert.Equal(t, tt.want, got)
+
+			err = db.Close()
+			require.NoError(t, err)
 		})
 	}
 }