closes #159

Author: l3pp4rd

go.mod

@@ -1 +1,3 @@
 module github.com/DATA-DOG/go-sqlmock
+
+go 1.12

sqlmock_go18_test.go

@@ -474,3 +474,34 @@ func TestContextExecErrorDelay(t *testing.T) {
 		t.Errorf("expecting a delay of less than %v before error, actual delay was %v", delay, elapsed)
 	}
 }
+
+func TestStatementTX(t *testing.T) {
+	t.Parallel()
+	db, mock, err := New()
+	if err != nil {
+		t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
+	}
+	defer db.Close()
+
+	prep := mock.ExpectPrepare("SELECT")
+	mock.ExpectBegin()
+
+	prep.ExpectQuery().WithArgs(1).WillReturnError(errors.New("fast fail"))
+
+	stmt, err := db.Prepare("SELECT title, body FROM articles WHERE id = ?")
+	if err != nil {
+		t.Fatalf("unexpected error on prepare: %v", err)
+	}
+
+	tx, err := db.Begin()
+	if err != nil {
+		t.Fatalf("unexpected error on begin: %v", err)
+	}
+
+	// upgrade connection for statement
+	txStmt := tx.Stmt(stmt)
+	_, err = txStmt.Query(1)
+	if err == nil || err.Error() != "fast fail" {
+		t.Fatalf("unexpected result: %v", err)
+	}
+}