last := len(db.freeConn) - 1
		for i := last; i >= 0; i-- {
			c := db.freeConn[i]
			if c.returnedAt.Before(idleSince) {
				i++
				closing = db.freeConn[:i:i]
				db.freeConn = db.freeConn[i:]
				idleClosing = int64(len(closing))
				db.maxIdleTimeClosed += idleClosing
				break
			}
		}

		if len(db.freeConn) > 0 {
			c := db.freeConn[0]

	}
	tx.Commit()
	if got := len(db.freeConn); got != 1 {
		t.Errorf("freeConns = %d; want 1", got)
	}

	db.SetMaxIdleConns(0)

	if got := len(db.freeConn); got != 0 {
		t.Errorf("freeConns after set to zero = %d; want 0", got)
	}

	tx, err = db.Begin()
	if err != nil {
		t.Fatal(err)
	}
	tx.Commit()
	if got := len(db.freeConn); got != 0 {

		`Africa/Casablanca`,
		`Africa/Ceuta`,
		`Africa/Conakry`,
		`Africa/Dakar`,
		`Africa/Dar_es_Salaam`,
		`Africa/Djibouti`,
		`Africa/Douala`,
		`Africa/El_Aaiun`,
		`Africa/Freetown`,
		`Africa/Gaborone`,
		`Africa/Harare`,
		`Africa/Johannesburg`,
		`Africa/Juba`,
		`Africa/Kampala`,
		`Africa/Khartoum`,
		`Africa/Kigali`,
		`Africa/Kinshasa`,
		`Africa/Lagos`,