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driver_test.go
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driver_test.go
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// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2013 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 (
"bytes"
"crypto/tls"
"database/sql"
"database/sql/driver"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/url"
"os"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
)
// Ensure that all the driver interfaces are implemented
var (
_ driver.Rows = &binaryRows{}
_ driver.Rows = &textRows{}
)
var (
user string
pass string
prot string
addr string
dbname string
dsn string
netAddr string
available bool
)
var (
tDate = time.Date(2012, 6, 14, 0, 0, 0, 0, time.UTC)
sDate = "2012-06-14"
tDateTime = time.Date(2011, 11, 20, 21, 27, 37, 0, time.UTC)
sDateTime = "2011-11-20 21:27:37"
tDate0 = time.Time{}
sDate0 = "0000-00-00"
sDateTime0 = "0000-00-00 00:00:00"
)
// See https://github.com/go-sql-driver/mysql/wiki/Testing
func init() {
// get environment variables
env := func(key, defaultValue string) string {
if value := os.Getenv(key); value != "" {
return value
}
return defaultValue
}
user = env("MYSQL_TEST_USER", "root")
pass = env("MYSQL_TEST_PASS", "")
prot = env("MYSQL_TEST_PROT", "tcp")
addr = env("MYSQL_TEST_ADDR", "localhost:3306")
dbname = env("MYSQL_TEST_DBNAME", "gotest")
netAddr = fmt.Sprintf("%s(%s)", prot, addr)
dsn = fmt.Sprintf("%s:%s@%s/%s?timeout=30s", user, pass, netAddr, dbname)
c, err := net.Dial(prot, addr)
if err == nil {
available = true
c.Close()
}
}
type DBTest struct {
*testing.T
db *sql.DB
}
func runTestsWithMultiStatement(t *testing.T, dsn string, tests ...func(dbt *DBTest)) {
if !available {
t.Skipf("MySQL server not running on %s", netAddr)
}
dsn += "&multiStatements=true"
var db *sql.DB
if _, err := ParseDSN(dsn); err != errInvalidDSNUnsafeCollation {
db, err = sql.Open("mysql", dsn)
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
}
defer db.Close()
}
dbt := &DBTest{t, db}
for _, test := range tests {
test(dbt)
dbt.db.Exec("DROP TABLE IF EXISTS test")
}
}
func runTests(t *testing.T, dsn string, tests ...func(dbt *DBTest)) {
if !available {
t.Skipf("MySQL server not running on %s", netAddr)
}
db, err := sql.Open("mysql", dsn)
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
}
defer db.Close()
db.Exec("DROP TABLE IF EXISTS test")
dsn2 := dsn + "&interpolateParams=true"
var db2 *sql.DB
if _, err := ParseDSN(dsn2); err != errInvalidDSNUnsafeCollation {
db2, err = sql.Open("mysql", dsn2)
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
}
defer db2.Close()
}
dsn3 := dsn + "&multiStatements=true"
var db3 *sql.DB
if _, err := ParseDSN(dsn3); err != errInvalidDSNUnsafeCollation {
db3, err = sql.Open("mysql", dsn3)
if err != nil {
t.Fatalf("error connecting: %s", err.Error())
}
defer db3.Close()
}
dbt := &DBTest{t, db}
dbt2 := &DBTest{t, db2}
dbt3 := &DBTest{t, db3}
for _, test := range tests {
test(dbt)
dbt.db.Exec("DROP TABLE IF EXISTS test")
if db2 != nil {
test(dbt2)
dbt2.db.Exec("DROP TABLE IF EXISTS test")
}
if db3 != nil {
test(dbt3)
dbt3.db.Exec("DROP TABLE IF EXISTS test")
}
}
}
func (dbt *DBTest) fail(method, query string, err error) {
if len(query) > 300 {
query = "[query too large to print]"
}
dbt.Fatalf("error on %s %s: %s", method, query, err.Error())
}
func (dbt *DBTest) mustExec(query string, args ...interface{}) (res sql.Result) {
res, err := dbt.db.Exec(query, args...)
if err != nil {
dbt.fail("exec", query, err)
}
return res
}
func (dbt *DBTest) mustQuery(query string, args ...interface{}) (rows *sql.Rows) {
rows, err := dbt.db.Query(query, args...)
if err != nil {
dbt.fail("query", query, err)
}
return rows
}
func maybeSkip(t *testing.T, err error, skipErrno uint16) {
mySQLErr, ok := err.(*MySQLError)
if !ok {
return
}
if mySQLErr.Number == skipErrno {
t.Skipf("skipping test for error: %v", err)
}
}
func TestEmptyQuery(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
// just a comment, no query
rows := dbt.mustQuery("--")
// will hang before #255
if rows.Next() {
dbt.Errorf("next on rows must be false")
}
})
}
func TestCRUD(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
// Create Table
dbt.mustExec("CREATE TABLE test (value BOOL)")
// Test for unexpected data
var out bool
rows := dbt.mustQuery("SELECT * FROM test")
if rows.Next() {
dbt.Error("unexpected data in empty table")
}
// Create Data
res := dbt.mustExec("INSERT INTO test VALUES (1)")
count, err := res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 1 {
dbt.Fatalf("expected 1 affected row, got %d", count)
}
id, err := res.LastInsertId()
if err != nil {
dbt.Fatalf("res.LastInsertId() returned error: %s", err.Error())
}
if id != 0 {
dbt.Fatalf("expected InsertId 0, got %d", id)
}
// Read
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if true != out {
dbt.Errorf("true != %t", out)
}
if rows.Next() {
dbt.Error("unexpected data")
}
} else {
dbt.Error("no data")
}
// Update
res = dbt.mustExec("UPDATE test SET value = ? WHERE value = ?", false, true)
count, err = res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 1 {
dbt.Fatalf("expected 1 affected row, got %d", count)
}
// Check Update
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if false != out {
dbt.Errorf("false != %t", out)
}
if rows.Next() {
dbt.Error("unexpected data")
}
} else {
dbt.Error("no data")
}
// Delete
res = dbt.mustExec("DELETE FROM test WHERE value = ?", false)
count, err = res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 1 {
dbt.Fatalf("expected 1 affected row, got %d", count)
}
// Check for unexpected rows
res = dbt.mustExec("DELETE FROM test")
count, err = res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 0 {
dbt.Fatalf("expected 0 affected row, got %d", count)
}
})
}
func TestMultiQuery(t *testing.T) {
runTestsWithMultiStatement(t, dsn, func(dbt *DBTest) {
// Create Table
dbt.mustExec("CREATE TABLE `test` (`id` int(11) NOT NULL, `value` int(11) NOT NULL) ")
// Create Data
res := dbt.mustExec("INSERT INTO test VALUES (1, 1)")
count, err := res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 1 {
dbt.Fatalf("expected 1 affected row, got %d", count)
}
// Update
res = dbt.mustExec("UPDATE test SET value = 3 WHERE id = 1; UPDATE test SET value = 4 WHERE id = 1; UPDATE test SET value = 5 WHERE id = 1;")
count, err = res.RowsAffected()
if err != nil {
dbt.Fatalf("res.RowsAffected() returned error: %s", err.Error())
}
if count != 1 {
dbt.Fatalf("expected 1 affected row, got %d", count)
}
// Read
var out int
rows := dbt.mustQuery("SELECT value FROM test WHERE id=1;")
if rows.Next() {
rows.Scan(&out)
if 5 != out {
dbt.Errorf("5 != %d", out)
}
if rows.Next() {
dbt.Error("unexpected data")
}
} else {
dbt.Error("no data")
}
})
}
func TestInt(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
types := [5]string{"TINYINT", "SMALLINT", "MEDIUMINT", "INT", "BIGINT"}
in := int64(42)
var out int64
var rows *sql.Rows
// SIGNED
for _, v := range types {
dbt.mustExec("CREATE TABLE test (value " + v + ")")
dbt.mustExec("INSERT INTO test VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if in != out {
dbt.Errorf("%s: %d != %d", v, in, out)
}
} else {
dbt.Errorf("%s: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
// UNSIGNED ZEROFILL
for _, v := range types {
dbt.mustExec("CREATE TABLE test (value " + v + " ZEROFILL)")
dbt.mustExec("INSERT INTO test VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if in != out {
dbt.Errorf("%s ZEROFILL: %d != %d", v, in, out)
}
} else {
dbt.Errorf("%s ZEROFILL: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
})
}
func TestFloat32(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
types := [2]string{"FLOAT", "DOUBLE"}
in := float32(42.23)
var out float32
var rows *sql.Rows
for _, v := range types {
dbt.mustExec("CREATE TABLE test (value " + v + ")")
dbt.mustExec("INSERT INTO test VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if in != out {
dbt.Errorf("%s: %g != %g", v, in, out)
}
} else {
dbt.Errorf("%s: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
})
}
func TestFloat64(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
types := [2]string{"FLOAT", "DOUBLE"}
var expected float64 = 42.23
var out float64
var rows *sql.Rows
for _, v := range types {
dbt.mustExec("CREATE TABLE test (value " + v + ")")
dbt.mustExec("INSERT INTO test VALUES (42.23)")
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if expected != out {
dbt.Errorf("%s: %g != %g", v, expected, out)
}
} else {
dbt.Errorf("%s: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
})
}
func TestFloat64Placeholder(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
types := [2]string{"FLOAT", "DOUBLE"}
var expected float64 = 42.23
var out float64
var rows *sql.Rows
for _, v := range types {
dbt.mustExec("CREATE TABLE test (id int, value " + v + ")")
dbt.mustExec("INSERT INTO test VALUES (1, 42.23)")
rows = dbt.mustQuery("SELECT value FROM test WHERE id = ?", 1)
if rows.Next() {
rows.Scan(&out)
if expected != out {
dbt.Errorf("%s: %g != %g", v, expected, out)
}
} else {
dbt.Errorf("%s: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
})
}
func TestString(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
types := [6]string{"CHAR(255)", "VARCHAR(255)", "TINYTEXT", "TEXT", "MEDIUMTEXT", "LONGTEXT"}
in := "κόσμε üöäßñóùéàâÿœ'îë Árvíztűrő いろはにほへとちりぬるを イロハニホヘト דג סקרן чащах น่าฟังเอย"
var out string
var rows *sql.Rows
for _, v := range types {
dbt.mustExec("CREATE TABLE test (value " + v + ") CHARACTER SET utf8")
dbt.mustExec("INSERT INTO test VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if in != out {
dbt.Errorf("%s: %s != %s", v, in, out)
}
} else {
dbt.Errorf("%s: no data", v)
}
dbt.mustExec("DROP TABLE IF EXISTS test")
}
// BLOB
dbt.mustExec("CREATE TABLE test (id int, value BLOB) CHARACTER SET utf8")
id := 2
in = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, " +
"sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, " +
"sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. " +
"Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. " +
"Lorem ipsum dolor sit amet, consetetur sadipscing elitr, " +
"sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, " +
"sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. " +
"Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet."
dbt.mustExec("INSERT INTO test VALUES (?, ?)", id, in)
err := dbt.db.QueryRow("SELECT value FROM test WHERE id = ?", id).Scan(&out)
if err != nil {
dbt.Fatalf("Error on BLOB-Query: %s", err.Error())
} else if out != in {
dbt.Errorf("BLOB: %s != %s", in, out)
}
})
}
type testValuer struct {
value string
}
func (tv testValuer) Value() (driver.Value, error) {
return tv.value, nil
}
func TestValuer(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
in := testValuer{"a_value"}
var out string
var rows *sql.Rows
dbt.mustExec("CREATE TABLE test (value VARCHAR(255)) CHARACTER SET utf8")
dbt.mustExec("INSERT INTO test VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM test")
if rows.Next() {
rows.Scan(&out)
if in.value != out {
dbt.Errorf("Valuer: %v != %s", in, out)
}
} else {
dbt.Errorf("Valuer: no data")
}
dbt.mustExec("DROP TABLE IF EXISTS test")
})
}
type testValuerWithValidation struct {
value string
}
func (tv testValuerWithValidation) Value() (driver.Value, error) {
if len(tv.value) == 0 {
return nil, fmt.Errorf("Invalid string valuer. Value must not be empty")
}
return tv.value, nil
}
func TestValuerWithValidation(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
in := testValuerWithValidation{"a_value"}
var out string
var rows *sql.Rows
dbt.mustExec("CREATE TABLE testValuer (value VARCHAR(255)) CHARACTER SET utf8")
dbt.mustExec("INSERT INTO testValuer VALUES (?)", in)
rows = dbt.mustQuery("SELECT value FROM testValuer")
defer rows.Close()
if rows.Next() {
rows.Scan(&out)
if in.value != out {
dbt.Errorf("Valuer: %v != %s", in, out)
}
} else {
dbt.Errorf("Valuer: no data")
}
if _, err := dbt.db.Exec("INSERT INTO testValuer VALUES (?)", testValuerWithValidation{""}); err == nil {
dbt.Errorf("Failed to check valuer error")
}
if _, err := dbt.db.Exec("INSERT INTO testValuer VALUES (?)", nil); err != nil {
dbt.Errorf("Failed to check nil")
}
if _, err := dbt.db.Exec("INSERT INTO testValuer VALUES (?)", map[string]bool{}); err == nil {
dbt.Errorf("Failed to check not valuer")
}
dbt.mustExec("DROP TABLE IF EXISTS testValuer")
})
}
type timeTests struct {
dbtype string
tlayout string
tests []timeTest
}
type timeTest struct {
s string // leading "!": do not use t as value in queries
t time.Time
}
type timeMode byte
func (t timeMode) String() string {
switch t {
case binaryString:
return "binary:string"
case binaryTime:
return "binary:time.Time"
case textString:
return "text:string"
}
panic("unsupported timeMode")
}
func (t timeMode) Binary() bool {
switch t {
case binaryString, binaryTime:
return true
}
return false
}
const (
binaryString timeMode = iota
binaryTime
textString
)
func (t timeTest) genQuery(dbtype string, mode timeMode) string {
var inner string
if mode.Binary() {
inner = "?"
} else {
inner = `"%s"`
}
return `SELECT cast(` + inner + ` as ` + dbtype + `)`
}
func (t timeTest) run(dbt *DBTest, dbtype, tlayout string, mode timeMode) {
var rows *sql.Rows
query := t.genQuery(dbtype, mode)
switch mode {
case binaryString:
rows = dbt.mustQuery(query, t.s)
case binaryTime:
rows = dbt.mustQuery(query, t.t)
case textString:
query = fmt.Sprintf(query, t.s)
rows = dbt.mustQuery(query)
default:
panic("unsupported mode")
}
defer rows.Close()
var err error
if !rows.Next() {
err = rows.Err()
if err == nil {
err = fmt.Errorf("no data")
}
dbt.Errorf("%s [%s]: %s", dbtype, mode, err)
return
}
var dst interface{}
err = rows.Scan(&dst)
if err != nil {
dbt.Errorf("%s [%s]: %s", dbtype, mode, err)
return
}
switch val := dst.(type) {
case []uint8:
str := string(val)
if str == t.s {
return
}
if mode.Binary() && dbtype == "DATETIME" && len(str) == 26 && str[:19] == t.s {
// a fix mainly for TravisCI:
// accept full microsecond resolution in result for DATETIME columns
// where the binary protocol was used
return
}
dbt.Errorf("%s [%s] to string: expected %q, got %q",
dbtype, mode,
t.s, str,
)
case time.Time:
if val == t.t {
return
}
dbt.Errorf("%s [%s] to string: expected %q, got %q",
dbtype, mode,
t.s, val.Format(tlayout),
)
default:
fmt.Printf("%#v\n", []interface{}{dbtype, tlayout, mode, t.s, t.t})
dbt.Errorf("%s [%s]: unhandled type %T (is '%v')",
dbtype, mode,
val, val,
)
}
}
func TestDateTime(t *testing.T) {
afterTime := func(t time.Time, d string) time.Time {
dur, err := time.ParseDuration(d)
if err != nil {
panic(err)
}
return t.Add(dur)
}
// NOTE: MySQL rounds DATETIME(x) up - but that's not included in the tests
format := "2006-01-02 15:04:05.999999"
t0 := time.Time{}
tstr0 := "0000-00-00 00:00:00.000000"
testcases := []timeTests{
{"DATE", format[:10], []timeTest{
{t: time.Date(2011, 11, 20, 0, 0, 0, 0, time.UTC)},
{t: t0, s: tstr0[:10]},
}},
{"DATETIME", format[:19], []timeTest{
{t: time.Date(2011, 11, 20, 21, 27, 37, 0, time.UTC)},
{t: t0, s: tstr0[:19]},
}},
{"DATETIME(0)", format[:21], []timeTest{
{t: time.Date(2011, 11, 20, 21, 27, 37, 0, time.UTC)},
{t: t0, s: tstr0[:19]},
}},
{"DATETIME(1)", format[:21], []timeTest{
{t: time.Date(2011, 11, 20, 21, 27, 37, 100000000, time.UTC)},
{t: t0, s: tstr0[:21]},
}},
{"DATETIME(6)", format, []timeTest{
{t: time.Date(2011, 11, 20, 21, 27, 37, 123456000, time.UTC)},
{t: t0, s: tstr0},
}},
{"TIME", format[11:19], []timeTest{
{t: afterTime(t0, "12345s")},
{s: "!-12:34:56"},
{s: "!-838:59:59"},
{s: "!838:59:59"},
{t: t0, s: tstr0[11:19]},
}},
{"TIME(0)", format[11:19], []timeTest{
{t: afterTime(t0, "12345s")},
{s: "!-12:34:56"},
{s: "!-838:59:59"},
{s: "!838:59:59"},
{t: t0, s: tstr0[11:19]},
}},
{"TIME(1)", format[11:21], []timeTest{
{t: afterTime(t0, "12345600ms")},
{s: "!-12:34:56.7"},
{s: "!-838:59:58.9"},
{s: "!838:59:58.9"},
{t: t0, s: tstr0[11:21]},
}},
{"TIME(6)", format[11:], []timeTest{
{t: afterTime(t0, "1234567890123000ns")},
{s: "!-12:34:56.789012"},
{s: "!-838:59:58.999999"},
{s: "!838:59:58.999999"},
{t: t0, s: tstr0[11:]},
}},
}
dsns := []string{
dsn + "&parseTime=true",
dsn + "&parseTime=false",
}
for _, testdsn := range dsns {
runTests(t, testdsn, func(dbt *DBTest) {
microsecsSupported := false
zeroDateSupported := false
var rows *sql.Rows
var err error
rows, err = dbt.db.Query(`SELECT cast("00:00:00.1" as TIME(1)) = "00:00:00.1"`)
if err == nil {
rows.Scan(µsecsSupported)
rows.Close()
}
rows, err = dbt.db.Query(`SELECT cast("0000-00-00" as DATE) = "0000-00-00"`)
if err == nil {
rows.Scan(&zeroDateSupported)
rows.Close()
}
for _, setups := range testcases {
if t := setups.dbtype; !microsecsSupported && t[len(t)-1:] == ")" {
// skip fractional second tests if unsupported by server
continue
}
for _, setup := range setups.tests {
allowBinTime := true
if setup.s == "" {
// fill time string wherever Go can reliable produce it
setup.s = setup.t.Format(setups.tlayout)
} else if setup.s[0] == '!' {
// skip tests using setup.t as source in queries
allowBinTime = false
// fix setup.s - remove the "!"
setup.s = setup.s[1:]
}
if !zeroDateSupported && setup.s == tstr0[:len(setup.s)] {
// skip disallowed 0000-00-00 date
continue
}
setup.run(dbt, setups.dbtype, setups.tlayout, textString)
setup.run(dbt, setups.dbtype, setups.tlayout, binaryString)
if allowBinTime {
setup.run(dbt, setups.dbtype, setups.tlayout, binaryTime)
}
}
}
})
}
}
func TestTimestampMicros(t *testing.T) {
format := "2006-01-02 15:04:05.999999"
f0 := format[:19]
f1 := format[:21]
f6 := format[:26]
runTests(t, dsn, func(dbt *DBTest) {
// check if microseconds are supported.
// Do not use timestamp(x) for that check - before 5.5.6, x would mean display width
// and not precision.
// Se last paragraph at http://dev.mysql.com/doc/refman/5.6/en/fractional-seconds.html
microsecsSupported := false
if rows, err := dbt.db.Query(`SELECT cast("00:00:00.1" as TIME(1)) = "00:00:00.1"`); err == nil {
rows.Scan(µsecsSupported)
rows.Close()
}
if !microsecsSupported {
// skip test
return
}
_, err := dbt.db.Exec(`
CREATE TABLE test (
value0 TIMESTAMP NOT NULL DEFAULT '` + f0 + `',
value1 TIMESTAMP(1) NOT NULL DEFAULT '` + f1 + `',
value6 TIMESTAMP(6) NOT NULL DEFAULT '` + f6 + `'
)`,
)
if err != nil {
dbt.Error(err)
}
defer dbt.mustExec("DROP TABLE IF EXISTS test")
dbt.mustExec("INSERT INTO test SET value0=?, value1=?, value6=?", f0, f1, f6)
var res0, res1, res6 string
rows := dbt.mustQuery("SELECT * FROM test")
if !rows.Next() {
dbt.Errorf("test contained no selectable values")
}
err = rows.Scan(&res0, &res1, &res6)
if err != nil {
dbt.Error(err)
}
if res0 != f0 {
dbt.Errorf("expected %q, got %q", f0, res0)
}
if res1 != f1 {
dbt.Errorf("expected %q, got %q", f1, res1)
}
if res6 != f6 {
dbt.Errorf("expected %q, got %q", f6, res6)
}
})
}
func TestNULL(t *testing.T) {
runTests(t, dsn, func(dbt *DBTest) {
nullStmt, err := dbt.db.Prepare("SELECT NULL")
if err != nil {
dbt.Fatal(err)
}
defer nullStmt.Close()
nonNullStmt, err := dbt.db.Prepare("SELECT 1")
if err != nil {
dbt.Fatal(err)
}
defer nonNullStmt.Close()
// NullBool
var nb sql.NullBool
// Invalid
if err = nullStmt.QueryRow().Scan(&nb); err != nil {
dbt.Fatal(err)
}
if nb.Valid {
dbt.Error("valid NullBool which should be invalid")
}
// Valid
if err = nonNullStmt.QueryRow().Scan(&nb); err != nil {
dbt.Fatal(err)
}
if !nb.Valid {
dbt.Error("invalid NullBool which should be valid")
} else if nb.Bool != true {
dbt.Errorf("Unexpected NullBool value: %t (should be true)", nb.Bool)
}
// NullFloat64
var nf sql.NullFloat64
// Invalid
if err = nullStmt.QueryRow().Scan(&nf); err != nil {
dbt.Fatal(err)
}
if nf.Valid {
dbt.Error("valid NullFloat64 which should be invalid")
}
// Valid
if err = nonNullStmt.QueryRow().Scan(&nf); err != nil {
dbt.Fatal(err)
}
if !nf.Valid {
dbt.Error("invalid NullFloat64 which should be valid")
} else if nf.Float64 != float64(1) {
dbt.Errorf("unexpected NullFloat64 value: %f (should be 1.0)", nf.Float64)
}
// NullInt64
var ni sql.NullInt64
// Invalid
if err = nullStmt.QueryRow().Scan(&ni); err != nil {
dbt.Fatal(err)
}
if ni.Valid {
dbt.Error("valid NullInt64 which should be invalid")
}
// Valid
if err = nonNullStmt.QueryRow().Scan(&ni); err != nil {
dbt.Fatal(err)
}
if !ni.Valid {
dbt.Error("invalid NullInt64 which should be valid")
} else if ni.Int64 != int64(1) {
dbt.Errorf("unexpected NullInt64 value: %d (should be 1)", ni.Int64)
}
// NullString
var ns sql.NullString
// Invalid
if err = nullStmt.QueryRow().Scan(&ns); err != nil {
dbt.Fatal(err)
}
if ns.Valid {
dbt.Error("valid NullString which should be invalid")
}
// Valid
if err = nonNullStmt.QueryRow().Scan(&ns); err != nil {
dbt.Fatal(err)
}
if !ns.Valid {
dbt.Error("invalid NullString which should be valid")
} else if ns.String != `1` {
dbt.Error("unexpected NullString value:" + ns.String + " (should be `1`)")
}
// nil-bytes
var b []byte
// Read nil
if err = nullStmt.QueryRow().Scan(&b); err != nil {
dbt.Fatal(err)
}
if b != nil {
dbt.Error("non-nil []byte which should be nil")
}
// Read non-nil
if err = nonNullStmt.QueryRow().Scan(&b); err != nil {
dbt.Fatal(err)
}
if b == nil {
dbt.Error("nil []byte which should be non-nil")
}
// Insert nil
b = nil
success := false
if err = dbt.db.QueryRow("SELECT ? IS NULL", b).Scan(&success); err != nil {
dbt.Fatal(err)
}
if !success {
dbt.Error("inserting []byte(nil) as NULL failed")
}
// Check input==output with input==nil
b = nil
if err = dbt.db.QueryRow("SELECT ?", b).Scan(&b); err != nil {
dbt.Fatal(err)
}
if b != nil {
dbt.Error("non-nil echo from nil input")
}
// Check input==output with input!=nil
b = []byte("")
if err = dbt.db.QueryRow("SELECT ?", b).Scan(&b); err != nil {
dbt.Fatal(err)
}
if b == nil {
dbt.Error("nil echo from non-nil input")
}
// Insert NULL
dbt.mustExec("CREATE TABLE test (dummmy1 int, value int, dummy2 int)")
dbt.mustExec("INSERT INTO test VALUES (?, ?, ?)", 1, nil, 2)
var out interface{}
rows := dbt.mustQuery("SELECT * FROM test")
if rows.Next() {
rows.Scan(&out)
if out != nil {
dbt.Errorf("%v != nil", out)