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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sql
import (
"strings"
"testing"
)
func newTestDB(t *testing.T, name string) *DB {
db, err := Open("test", "foo")
if err != nil {
t.Fatalf("Open: %v", err)
}
if _, err := db.Exec("WIPE"); err != nil {
t.Fatalf("exec wipe: %v", err)
}
if name == "people" {
exec(t, db, "CREATE|people|name=string,age=int32,dead=bool")
exec(t, db, "INSERT|people|name=Alice,age=?", 1)
exec(t, db, "INSERT|people|name=Bob,age=?", 2)
exec(t, db, "INSERT|people|name=Chris,age=?", 3)
}
return db
}
func exec(t *testing.T, db *DB, query string, args ...interface{}) {
_, err := db.Exec(query, args...)
if err != nil {
t.Fatalf("Exec of %q: %v", query, err)
}
}
func closeDB(t *testing.T, db *DB) {
err := db.Close()
if err != nil {
t.Fatalf("error closing DB: %v", err)
}
}
func TestQuery(t *testing.T) {
db := newTestDB(t, "people")
defer closeDB(t, db)
var name string
var age int
err := db.QueryRow("SELECT|people|age,name|age=?", 3).Scan(&age)
if err == nil || !strings.Contains(err.Error(), "expected 2 destination arguments") {
t.Errorf("expected error from wrong number of arguments; actually got: %v", err)
}
err = db.QueryRow("SELECT|people|age,name|age=?", 2).Scan(&age, &name)
if err != nil {
t.Fatalf("age QueryRow+Scan: %v", err)
}
if name != "Bob" {
t.Errorf("expected name Bob, got %q", name)
}
if age != 2 {
t.Errorf("expected age 2, got %d", age)
}
err = db.QueryRow("SELECT|people|age,name|name=?", "Alice").Scan(&age, &name)
if err != nil {
t.Fatalf("name QueryRow+Scan: %v", err)
}
if name != "Alice" {
t.Errorf("expected name Alice, got %q", name)
}
if age != 1 {
t.Errorf("expected age 1, got %d", age)
}
}
func TestStatementQueryRow(t *testing.T) {
db := newTestDB(t, "people")
defer closeDB(t, db)
stmt, err := db.Prepare("SELECT|people|age|name=?")
if err != nil {
t.Fatalf("Prepare: %v", err)
}
var age int
for n, tt := range []struct {
name string
want int
}{
{"Alice", 1},
{"Bob", 2},
{"Chris", 3},
} {
if err := stmt.QueryRow(tt.name).Scan(&age); err != nil {
t.Errorf("%d: on %q, QueryRow/Scan: %v", n, tt.name, err)
} else if age != tt.want {
t.Errorf("%d: age=%d, want %d", n, age, tt.want)
}
}
}
// just a test of fakedb itself
func TestBogusPreboundParameters(t *testing.T) {
db := newTestDB(t, "foo")
defer closeDB(t, db)
exec(t, db, "CREATE|t1|name=string,age=int32,dead=bool")
_, err := db.Prepare("INSERT|t1|name=?,age=bogusconversion")
if err == nil {
t.Fatalf("expected error")
}
if err.Error() != `fakedb: invalid conversion to int32 from "bogusconversion"` {
t.Errorf("unexpected error: %v", err)
}
}
func TestDb(t *testing.T) {
db := newTestDB(t, "foo")
defer closeDB(t, db)
exec(t, db, "CREATE|t1|name=string,age=int32,dead=bool")
stmt, err := db.Prepare("INSERT|t1|name=?,age=?")
if err != nil {
t.Errorf("Stmt, err = %v, %v", stmt, err)
}
type execTest struct {
args []interface{}
wantErr string
}
execTests := []execTest{
// Okay:
{[]interface{}{"Brad", 31}, ""},
{[]interface{}{"Brad", int64(31)}, ""},
{[]interface{}{"Bob", "32"}, ""},
{[]interface{}{7, 9}, ""},
// Invalid conversions:
{[]interface{}{"Brad", int64(0xFFFFFFFF)}, "db: converting Exec argument #1's type: sql/driver: value 4294967295 overflows int32"},
{[]interface{}{"Brad", "strconv fail"}, "db: converting Exec argument #1's type: sql/driver: value \"strconv fail\" can't be converted to int32"},
// Wrong number of args:
{[]interface{}{}, "db: expected 2 arguments, got 0"},
{[]interface{}{1, 2, 3}, "db: expected 2 arguments, got 3"},
}
for n, et := range execTests {
_, err := stmt.Exec(et.args...)
errStr := ""
if err != nil {
errStr = err.Error()
}
if errStr != et.wantErr {
t.Errorf("stmt.Execute #%d: for %v, got error %q, want error %q",
n, et.args, errStr, et.wantErr)
}
}
}
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