go-sqlite3-hak5/sqlite3_test/sqltest.go

410 lines
8.5 KiB
Go

package sqlite3_test
import (
"database/sql"
"fmt"
"math/rand"
"regexp"
"strconv"
"sync"
"testing"
"time"
)
type Dialect int
const (
SQLITE Dialect = iota
POSTGRESQL
MYSQL
)
type DB struct {
*testing.T
*sql.DB
dialect Dialect
once sync.Once
}
var db *DB
// the following tables will be created and dropped during the test
var testTables = []string{"foo", "bar", "t", "bench"}
var tests = []testing.InternalTest{
{"TestBlobs", TestBlobs},
{"TestManyQueryRow", TestManyQueryRow},
{"TestTxQuery", TestTxQuery},
{"TestPreparedStmt", TestPreparedStmt},
}
var benchmarks = []testing.InternalBenchmark{
{"BenchmarkExec", BenchmarkExec},
{"BenchmarkQuery", BenchmarkQuery},
{"BenchmarkParams", BenchmarkParams},
{"BenchmarkStmt", BenchmarkStmt},
{"BenchmarkRows", BenchmarkRows},
{"BenchmarkStmtRows", BenchmarkStmtRows},
}
// RunTests runs the SQL test suite
func RunTests(t *testing.T, d *sql.DB, dialect Dialect) {
db = &DB{t, d, dialect, sync.Once{}}
testing.RunTests(func(string, string) (bool, error) { return true, nil }, tests)
if !testing.Short() {
for _, b := range benchmarks {
fmt.Printf("%-20s", b.Name)
r := testing.Benchmark(b.F)
fmt.Printf("%10d %10.0f req/s\n", r.N, float64(r.N)/r.T.Seconds())
}
}
db.tearDown()
}
func (db *DB) mustExec(sql string, args ...interface{}) sql.Result {
res, err := db.Exec(sql, args...)
if err != nil {
db.Fatalf("Error running %q: %v", sql, err)
}
return res
}
func (db *DB) tearDown() {
for _, tbl := range testTables {
switch db.dialect {
case SQLITE:
db.mustExec("drop table if exists " + tbl)
case MYSQL, POSTGRESQL:
db.mustExec("drop table if exists " + tbl)
default:
db.Fatal("unkown dialect")
}
}
}
// q replaces ? parameters if needed
func (db *DB) q(sql string) string {
switch db.dialect {
case POSTGRESQL: // repace with $1, $2, ..
qrx := regexp.MustCompile(`\?`)
n := 0
return qrx.ReplaceAllStringFunc(sql, func(string) string {
n++
return "$" + strconv.Itoa(n)
})
}
return sql
}
func (db *DB) blobType(size int) string {
switch db.dialect {
case SQLITE:
return fmt.Sprintf("blob[%d]", size)
case POSTGRESQL:
return "bytea"
case MYSQL:
return fmt.Sprintf("VARBINARY(%d)", size)
}
panic("unkown dialect")
}
func (db *DB) serialPK() string {
switch db.dialect {
case SQLITE:
return "integer primary key autoincrement"
case POSTGRESQL:
return "serial primary key"
case MYSQL:
return "integer primary key auto_increment"
}
panic("unkown dialect")
}
func (db *DB) now() string {
switch db.dialect {
case SQLITE:
return "datetime('now')"
case POSTGRESQL:
return "now()"
case MYSQL:
return "now()"
}
panic("unkown dialect")
}
func makeBench() {
if _, err := db.Exec("create table bench (n varchar(32), i integer, d double, s varchar(32), t datetime)"); err != nil {
panic(err)
}
st, err := db.Prepare("insert into bench values (?, ?, ?, ?, ?)")
if err != nil {
panic(err)
}
defer st.Close()
for i := 0; i < 100; i++ {
if _, err = st.Exec(nil, i, float64(i), fmt.Sprintf("%d", i), time.Now()); err != nil {
panic(err)
}
}
}
func TestResult(t *testing.T) {
db.tearDown()
db.mustExec("create temporary table test (id " + db.serialPK() + ", name varchar(10))")
for i := 1; i < 3; i++ {
r := db.mustExec(db.q("insert into test (name) values (?)"), fmt.Sprintf("row %d", i))
n, err := r.RowsAffected()
if err != nil {
t.Fatal(err)
}
if n != 1 {
t.Errorf("got %v, want %v", n, 1)
}
n, err = r.LastInsertId()
if err != nil {
t.Fatal(err)
}
if n != int64(i) {
t.Errorf("got %v, want %v", n, i)
}
}
if _, err := db.Exec("error!"); err == nil {
t.Fatalf("expected error")
}
}
func TestBlobs(t *testing.T) {
db.tearDown()
var blob = []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
db.mustExec("create table foo (id integer primary key, bar " + db.blobType(16) + ")")
db.mustExec(db.q("insert into foo (id, bar) values(?,?)"), 0, blob)
want := fmt.Sprintf("%x", blob)
b := make([]byte, 16)
err := db.QueryRow(db.q("select bar from foo where id = ?"), 0).Scan(&b)
got := fmt.Sprintf("%x", b)
if err != nil {
t.Errorf("[]byte scan: %v", err)
} else if got != want {
t.Errorf("for []byte, got %q; want %q", got, want)
}
err = db.QueryRow(db.q("select bar from foo where id = ?"), 0).Scan(&got)
want = string(blob)
if err != nil {
t.Errorf("string scan: %v", err)
} else if got != want {
t.Errorf("for string, got %q; want %q", got, want)
}
}
func TestManyQueryRow(t *testing.T) {
if testing.Short() {
t.Log("skipping in short mode")
return
}
db.tearDown()
db.mustExec("create table foo (id integer primary key, name varchar(50))")
db.mustExec(db.q("insert into foo (id, name) values(?,?)"), 1, "bob")
var name string
for i := 0; i < 10000; i++ {
err := db.QueryRow(db.q("select name from foo where id = ?"), 1).Scan(&name)
if err != nil || name != "bob" {
t.Fatalf("on query %d: err=%v, name=%q", i, err, name)
}
}
}
func TestTxQuery(t *testing.T) {
db.tearDown()
tx, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer tx.Rollback()
_, err = tx.Exec("create table foo (id integer primary key, name varchar(50))")
if err != nil {
t.Fatal(err)
}
_, err = tx.Exec(db.q("insert into foo (id, name) values(?,?)"), 1, "bob")
if err != nil {
t.Fatal(err)
}
r, err := tx.Query(db.q("select name from foo where id = ?"), 1)
if err != nil {
t.Fatal(err)
}
defer r.Close()
if !r.Next() {
if r.Err() != nil {
t.Fatal(err)
}
t.Fatal("expected one rows")
}
var name string
err = r.Scan(&name)
if err != nil {
t.Fatal(err)
}
}
func TestPreparedStmt(t *testing.T) {
db.tearDown()
db.mustExec("CREATE TABLE t (count INT)")
sel, err := db.Prepare("SELECT count FROM t ORDER BY count DESC")
if err != nil {
t.Fatalf("prepare 1: %v", err)
}
ins, err := db.Prepare(db.q("INSERT INTO t (count) VALUES (?)"))
if err != nil {
t.Fatalf("prepare 2: %v", err)
}
for n := 1; n <= 3; n++ {
if _, err := ins.Exec(n); err != nil {
t.Fatalf("insert(%d) = %v", n, err)
}
}
const nRuns = 10
var wg sync.WaitGroup
for i := 0; i < nRuns; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for j := 0; j < 10; j++ {
count := 0
if err := sel.QueryRow().Scan(&count); err != nil && err != sql.ErrNoRows {
t.Errorf("Query: %v", err)
return
}
if _, err := ins.Exec(rand.Intn(100)); err != nil {
t.Errorf("Insert: %v", err)
return
}
}
}()
}
wg.Wait()
}
// Benchmarks need to use panic() since b.Error errors are lost when
// running via testing.Benchmark() I would like to run these via go
// test -bench but calling Benchmark() from a benchmark test
// currently hangs go.
func BenchmarkExec(b *testing.B) {
for i := 0; i < b.N; i++ {
if _, err := db.Exec("select 1"); err != nil {
panic(err)
}
}
}
func BenchmarkQuery(b *testing.B) {
for i := 0; i < b.N; i++ {
var n sql.NullString
var i int
var f float64
var s string
// var t time.Time
if err := db.QueryRow("select null, 1, 1.1, 'foo'").Scan(&n, &i, &f, &s); err != nil {
panic(err)
}
}
}
func BenchmarkParams(b *testing.B) {
for i := 0; i < b.N; i++ {
var n sql.NullString
var i int
var f float64
var s string
// var t time.Time
if err := db.QueryRow("select ?, ?, ?, ?", nil, 1, 1.1, "foo").Scan(&n, &i, &f, &s); err != nil {
panic(err)
}
}
}
func BenchmarkStmt(b *testing.B) {
st, err := db.Prepare("select ?, ?, ?, ?")
if err != nil {
panic(err)
}
defer st.Close()
for n := 0; n < b.N; n++ {
var n sql.NullString
var i int
var f float64
var s string
// var t time.Time
if err := st.QueryRow(nil, 1, 1.1, "foo").Scan(&n, &i, &f, &s); err != nil {
panic(err)
}
}
}
func BenchmarkRows(b *testing.B) {
db.once.Do(makeBench)
for n := 0; n < b.N; n++ {
var n sql.NullString
var i int
var f float64
var s string
var t time.Time
r, err := db.Query("select * from bench")
if err != nil {
panic(err)
}
for r.Next() {
if err = r.Scan(&n, &i, &f, &s, &t); err != nil {
panic(err)
}
}
if err = r.Err(); err != nil {
panic(err)
}
}
}
func BenchmarkStmtRows(b *testing.B) {
db.once.Do(makeBench)
st, err := db.Prepare("select * from bench")
if err != nil {
panic(err)
}
defer st.Close()
for n := 0; n < b.N; n++ {
var n sql.NullString
var i int
var f float64
var s string
var t time.Time
r, err := st.Query()
if err != nil {
panic(err)
}
for r.Next() {
if err = r.Scan(&n, &i, &f, &s, &t); err != nil {
panic(err)
}
}
if err = r.Err(); err != nil {
panic(err)
}
}
}