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// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2016 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package mysql
import (
"context"
"database/sql/driver"
"encoding/json"
"errors"
"net"
"testing"
)
func TestInterpolateParams(t *testing.T) {
mc := &mysqlConn{
buf: newBuffer(nil),
maxAllowedPacket: maxPacketSize,
cfg: &Config{
InterpolateParams: true,
},
}
q, err := mc.interpolateParams("SELECT ?+?", []driver.Value{int64(42), "gopher"})
if err != nil {
t.Errorf("Expected err=nil, got %#v", err)
return
}
expected := `SELECT 42+'gopher'`
if q != expected {
t.Errorf("Expected: %q\nGot: %q", expected, q)
}
}
func TestInterpolateParamsJSONRawMessage(t *testing.T) {
mc := &mysqlConn{
buf: newBuffer(nil),
maxAllowedPacket: maxPacketSize,
cfg: &Config{
InterpolateParams: true,
},
}
buf, err := json.Marshal(struct {
Value int `json:"value"`
}{Value: 42})
if err != nil {
t.Errorf("Expected err=nil, got %#v", err)
return
}
q, err := mc.interpolateParams("SELECT ?", []driver.Value{json.RawMessage(buf)})
if err != nil {
t.Errorf("Expected err=nil, got %#v", err)
return
}
expected := `SELECT '{\"value\":42}'`
if q != expected {
t.Errorf("Expected: %q\nGot: %q", expected, q)
}
}
func TestInterpolateParamsTooManyPlaceholders(t *testing.T) {
mc := &mysqlConn{
buf: newBuffer(nil),
maxAllowedPacket: maxPacketSize,
cfg: &Config{
InterpolateParams: true,
},
}
q, err := mc.interpolateParams("SELECT ?+?", []driver.Value{int64(42)})
if err != driver.ErrSkip {
t.Errorf("Expected err=driver.ErrSkip, got err=%#v, q=%#v", err, q)
}
}
// We don't support placeholder in string literal for now.
// https://github.com/go-sql-driver/mysql/pull/490
func TestInterpolateParamsPlaceholderInString(t *testing.T) {
mc := &mysqlConn{
buf: newBuffer(nil),
maxAllowedPacket: maxPacketSize,
cfg: &Config{
InterpolateParams: true,
},
}
q, err := mc.interpolateParams("SELECT 'abc?xyz',?", []driver.Value{int64(42)})
// When InterpolateParams support string literal, this should return `"SELECT 'abc?xyz', 42`
if err != driver.ErrSkip {
t.Errorf("Expected err=driver.ErrSkip, got err=%#v, q=%#v", err, q)
}
}
func TestInterpolateParamsUint64(t *testing.T) {
mc := &mysqlConn{
buf: newBuffer(nil),
maxAllowedPacket: maxPacketSize,
cfg: &Config{
InterpolateParams: true,
},
}
q, err := mc.interpolateParams("SELECT ?", []driver.Value{uint64(42)})
if err != nil {
t.Errorf("Expected err=nil, got err=%#v, q=%#v", err, q)
}
if q != "SELECT 42" {
t.Errorf("Expected uint64 interpolation to work, got q=%#v", q)
}
}
func TestCheckNamedValue(t *testing.T) {
value := driver.NamedValue{Value: ^uint64(0)}
x := &mysqlConn{}
err := x.CheckNamedValue(&value)
if err != nil {
t.Fatal("uint64 high-bit not convertible", err)
}
if value.Value != ^uint64(0) {
t.Fatalf("uint64 high-bit converted, got %#v %T", value.Value, value.Value)
}
}
// TestCleanCancel tests passed context is cancelled at start.
// No packet should be sent. Connection should keep current status.
func TestCleanCancel(t *testing.T) {
mc := &mysqlConn{
closech: make(chan struct{}),
}
mc.startWatcher()
defer mc.cleanup()
ctx, cancel := context.WithCancel(context.Background())
cancel()
for i := 0; i < 3; i++ { // Repeat same behavior
err := mc.Ping(ctx)
if err != context.Canceled {
t.Errorf("expected context.Canceled, got %#v", err)
}
if mc.closed.IsSet() {
t.Error("expected mc is not closed, closed actually")
}
if mc.watching {
t.Error("expected watching is false, but true")
}
}
}
func TestPingMarkBadConnection(t *testing.T) {
nc := badConnection{err: errors.New("boom")}
ms := &mysqlConn{
netConn: nc,
buf: newBuffer(nc),
maxAllowedPacket: defaultMaxAllowedPacket,
}
err := ms.Ping(context.Background())
if err != driver.ErrBadConn {
t.Errorf("expected driver.ErrBadConn, got %#v", err)
}
}
func TestPingErrInvalidConn(t *testing.T) {
nc := badConnection{err: errors.New("failed to write"), n: 10}
ms := &mysqlConn{
netConn: nc,
buf: newBuffer(nc),
maxAllowedPacket: defaultMaxAllowedPacket,
closech: make(chan struct{}),
}
err := ms.Ping(context.Background())
if err != ErrInvalidConn {
t.Errorf("expected ErrInvalidConn, got %#v", err)
}
}
type badConnection struct {
n int
err error
net.Conn
}
func (bc badConnection) Write(b []byte) (n int, err error) {
return bc.n, bc.err
}
func (bc badConnection) Close() error {
return nil
}
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