Upgrade gopkg.in/testfixtures.v2 (#4999)

vendor/gopkg.in/testfixtures.v2/helper.go

@@ -18,21 +18,56 @@ type Helper interface {
 	init(*sql.DB) error
 	disableReferentialIntegrity(*sql.DB, loadFunction) error
 	paramType() int
-	databaseName(*sql.DB) string
+	databaseName(queryable) (string, error)
+	tableNames(queryable) ([]string, error)
+	isTableModified(queryable, string) (bool, error)
+	afterLoad(queryable) error
 	quoteKeyword(string) string
 	whileInsertOnTable(*sql.Tx, string, func() error) error
 }
 
+type queryable interface {
+	Exec(string, ...interface{}) (sql.Result, error)
+	Query(string, ...interface{}) (*sql.Rows, error)
+	QueryRow(string, ...interface{}) *sql.Row
+}
+
+// batchSplitter is an interface with method which returns byte slice for
+// splitting SQL batches. This need to split sql statements and run its
+// separately.
+//
+// For Microsoft SQL Server batch splitter is "GO". For details see
+// https://docs.microsoft.com/en-us/sql/t-sql/language-elements/sql-server-utilities-statements-go
+type batchSplitter interface {
+	splitter() []byte
+}
+
+var (
+	_ Helper = &MySQL{}
+	_ Helper = &PostgreSQL{}
+	_ Helper = &SQLite{}
+	_ Helper = &Oracle{}
+	_ Helper = &SQLServer{}
+)
+
 type baseHelper struct{}
 
-func (*baseHelper) init(_ *sql.DB) error {
+func (baseHelper) init(_ *sql.DB) error {
 	return nil
 }
 
-func (*baseHelper) quoteKeyword(str string) string {
+func (baseHelper) quoteKeyword(str string) string {
 	return fmt.Sprintf(`"%s"`, str)
 }
 
-func (*baseHelper) whileInsertOnTable(_ *sql.Tx, _ string, fn func() error) error {
+func (baseHelper) whileInsertOnTable(_ *sql.Tx, _ string, fn func() error) error {
 	return fn()
 }
+
+func (baseHelper) isTableModified(_ queryable, _ string) (bool, error) {
+	return true, nil
+}
+
+func (baseHelper) afterLoad(_ queryable) error {
+	return nil
+}