route/vendor/github.com/lib/pq/conn_test.go

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package pq
import (
"database/sql"
"database/sql/driver"
"fmt"
"io"
"net"
"os"
"reflect"
"strings"
"testing"
"time"
)
type Fatalistic interface {
Fatal(args ...interface{})
}
func forceBinaryParameters() bool {
bp := os.Getenv("PQTEST_BINARY_PARAMETERS")
if bp == "yes" {
return true
} else if bp == "" || bp == "no" {
return false
} else {
panic("unexpected value for PQTEST_BINARY_PARAMETERS")
}
}
func openTestConnConninfo(conninfo string) (*sql.DB, error) {
defaultTo := func(envvar string, value string) {
if os.Getenv(envvar) == "" {
os.Setenv(envvar, value)
}
}
defaultTo("PGDATABASE", "pqgotest")
defaultTo("PGSSLMODE", "disable")
defaultTo("PGCONNECT_TIMEOUT", "20")
if forceBinaryParameters() &&
!strings.HasPrefix(conninfo, "postgres://") &&
!strings.HasPrefix(conninfo, "postgresql://") {
conninfo = conninfo + " binary_parameters=yes"
}
return sql.Open("postgres", conninfo)
}
func openTestConn(t Fatalistic) *sql.DB {
conn, err := openTestConnConninfo("")
if err != nil {
t.Fatal(err)
}
return conn
}
func getServerVersion(t *testing.T, db *sql.DB) int {
var version int
err := db.QueryRow("SHOW server_version_num").Scan(&version)
if err != nil {
t.Fatal(err)
}
return version
}
func TestReconnect(t *testing.T) {
db1 := openTestConn(t)
defer db1.Close()
tx, err := db1.Begin()
if err != nil {
t.Fatal(err)
}
var pid1 int
err = tx.QueryRow("SELECT pg_backend_pid()").Scan(&pid1)
if err != nil {
t.Fatal(err)
}
db2 := openTestConn(t)
defer db2.Close()
_, err = db2.Exec("SELECT pg_terminate_backend($1)", pid1)
if err != nil {
t.Fatal(err)
}
// The rollback will probably "fail" because we just killed
// its connection above
_ = tx.Rollback()
const expected int = 42
var result int
err = db1.QueryRow(fmt.Sprintf("SELECT %d", expected)).Scan(&result)
if err != nil {
t.Fatal(err)
}
if result != expected {
t.Errorf("got %v; expected %v", result, expected)
}
}
func TestCommitInFailedTransaction(t *testing.T) {
db := openTestConn(t)
defer db.Close()
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
rows, err := txn.Query("SELECT error")
if err == nil {
rows.Close()
t.Fatal("expected failure")
}
err = txn.Commit()
if err != ErrInFailedTransaction {
t.Fatalf("expected ErrInFailedTransaction; got %#v", err)
}
}
func TestOpenURL(t *testing.T) {
testURL := func(url string) {
db, err := openTestConnConninfo(url)
if err != nil {
t.Fatal(err)
}
defer db.Close()
// database/sql might not call our Open at all unless we do something with
// the connection
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
txn.Rollback()
}
testURL("postgres://")
testURL("postgresql://")
}
const pgpassFile = "/tmp/pqgotest_pgpass"
func TestPgpass(t *testing.T) {
if os.Getenv("TRAVIS") != "true" {
t.Skip("not running under Travis, skipping pgpass tests")
}
testAssert := func(conninfo string, expected string, reason string) {
conn, err := openTestConnConninfo(conninfo)
if err != nil {
t.Fatal(err)
}
defer conn.Close()
txn, err := conn.Begin()
if err != nil {
if expected != "fail" {
t.Fatalf(reason, err)
}
return
}
rows, err := txn.Query("SELECT USER")
if err != nil {
txn.Rollback()
if expected != "fail" {
t.Fatalf(reason, err)
}
} else {
rows.Close()
if expected != "ok" {
t.Fatalf(reason, err)
}
}
txn.Rollback()
}
testAssert("", "ok", "missing .pgpass, unexpected error %#v")
os.Setenv("PGPASSFILE", pgpassFile)
testAssert("host=/tmp", "fail", ", unexpected error %#v")
os.Remove(pgpassFile)
pgpass, err := os.OpenFile(pgpassFile, os.O_RDWR|os.O_CREATE, 0644)
if err != nil {
t.Fatalf("Unexpected error writing pgpass file %#v", err)
}
_, err = pgpass.WriteString(`# comment
server:5432:some_db:some_user:pass_A
*:5432:some_db:some_user:pass_B
localhost:*:*:*:pass_C
*:*:*:*:pass_fallback
`)
if err != nil {
t.Fatalf("Unexpected error writing pgpass file %#v", err)
}
pgpass.Close()
assertPassword := func(extra values, expected string) {
o := values{
"host": "localhost",
"sslmode": "disable",
"connect_timeout": "20",
"user": "majid",
"port": "5432",
"extra_float_digits": "2",
"dbname": "pqgotest",
"client_encoding": "UTF8",
"datestyle": "ISO, MDY",
}
for k, v := range extra {
o[k] = v
}
(&conn{}).handlePgpass(o)
if pw := o["password"]; pw != expected {
t.Fatalf("For %v expected %s got %s", extra, expected, pw)
}
}
// wrong permissions for the pgpass file means it should be ignored
assertPassword(values{"host": "example.com", "user": "foo"}, "")
// fix the permissions and check if it has taken effect
os.Chmod(pgpassFile, 0600)
assertPassword(values{"host": "server", "dbname": "some_db", "user": "some_user"}, "pass_A")
assertPassword(values{"host": "example.com", "user": "foo"}, "pass_fallback")
assertPassword(values{"host": "example.com", "dbname": "some_db", "user": "some_user"}, "pass_B")
// localhost also matches the default "" and UNIX sockets
assertPassword(values{"host": "", "user": "some_user"}, "pass_C")
assertPassword(values{"host": "/tmp", "user": "some_user"}, "pass_C")
// cleanup
os.Remove(pgpassFile)
os.Setenv("PGPASSFILE", "")
}
func TestExec(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Exec("CREATE TEMP TABLE temp (a int)")
if err != nil {
t.Fatal(err)
}
r, err := db.Exec("INSERT INTO temp VALUES (1)")
if err != nil {
t.Fatal(err)
}
if n, _ := r.RowsAffected(); n != 1 {
t.Fatalf("expected 1 row affected, not %d", n)
}
r, err = db.Exec("INSERT INTO temp VALUES ($1), ($2), ($3)", 1, 2, 3)
if err != nil {
t.Fatal(err)
}
if n, _ := r.RowsAffected(); n != 3 {
t.Fatalf("expected 3 rows affected, not %d", n)
}
// SELECT doesn't send the number of returned rows in the command tag
// before 9.0
if getServerVersion(t, db) >= 90000 {
r, err = db.Exec("SELECT g FROM generate_series(1, 2) g")
if err != nil {
t.Fatal(err)
}
if n, _ := r.RowsAffected(); n != 2 {
t.Fatalf("expected 2 rows affected, not %d", n)
}
r, err = db.Exec("SELECT g FROM generate_series(1, $1) g", 3)
if err != nil {
t.Fatal(err)
}
if n, _ := r.RowsAffected(); n != 3 {
t.Fatalf("expected 3 rows affected, not %d", n)
}
}
}
func TestStatment(t *testing.T) {
db := openTestConn(t)
defer db.Close()
st, err := db.Prepare("SELECT 1")
if err != nil {
t.Fatal(err)
}
st1, err := db.Prepare("SELECT 2")
if err != nil {
t.Fatal(err)
}
r, err := st.Query()
if err != nil {
t.Fatal(err)
}
defer r.Close()
if !r.Next() {
t.Fatal("expected row")
}
var i int
err = r.Scan(&i)
if err != nil {
t.Fatal(err)
}
if i != 1 {
t.Fatalf("expected 1, got %d", i)
}
// st1
r1, err := st1.Query()
if err != nil {
t.Fatal(err)
}
defer r1.Close()
if !r1.Next() {
if r.Err() != nil {
t.Fatal(r1.Err())
}
t.Fatal("expected row")
}
err = r1.Scan(&i)
if err != nil {
t.Fatal(err)
}
if i != 2 {
t.Fatalf("expected 2, got %d", i)
}
}
func TestRowsCloseBeforeDone(t *testing.T) {
db := openTestConn(t)
defer db.Close()
r, err := db.Query("SELECT 1")
if err != nil {
t.Fatal(err)
}
err = r.Close()
if err != nil {
t.Fatal(err)
}
if r.Next() {
t.Fatal("unexpected row")
}
if r.Err() != nil {
t.Fatal(r.Err())
}
}
func TestParameterCountMismatch(t *testing.T) {
db := openTestConn(t)
defer db.Close()
var notused int
err := db.QueryRow("SELECT false", 1).Scan(&notused)
if err == nil {
t.Fatal("expected err")
}
// make sure we clean up correctly
err = db.QueryRow("SELECT 1").Scan(&notused)
if err != nil {
t.Fatal(err)
}
err = db.QueryRow("SELECT $1").Scan(&notused)
if err == nil {
t.Fatal("expected err")
}
// make sure we clean up correctly
err = db.QueryRow("SELECT 1").Scan(&notused)
if err != nil {
t.Fatal(err)
}
}
// Test that EmptyQueryResponses are handled correctly.
func TestEmptyQuery(t *testing.T) {
db := openTestConn(t)
defer db.Close()
res, err := db.Exec("")
if err != nil {
t.Fatal(err)
}
if _, err := res.RowsAffected(); err != errNoRowsAffected {
t.Fatalf("expected %s, got %v", errNoRowsAffected, err)
}
if _, err := res.LastInsertId(); err != errNoLastInsertID {
t.Fatalf("expected %s, got %v", errNoLastInsertID, err)
}
rows, err := db.Query("")
if err != nil {
t.Fatal(err)
}
cols, err := rows.Columns()
if err != nil {
t.Fatal(err)
}
if len(cols) != 0 {
t.Fatalf("unexpected number of columns %d in response to an empty query", len(cols))
}
if rows.Next() {
t.Fatal("unexpected row")
}
if rows.Err() != nil {
t.Fatal(rows.Err())
}
stmt, err := db.Prepare("")
if err != nil {
t.Fatal(err)
}
res, err = stmt.Exec()
if err != nil {
t.Fatal(err)
}
if _, err := res.RowsAffected(); err != errNoRowsAffected {
t.Fatalf("expected %s, got %v", errNoRowsAffected, err)
}
if _, err := res.LastInsertId(); err != errNoLastInsertID {
t.Fatalf("expected %s, got %v", errNoLastInsertID, err)
}
rows, err = stmt.Query()
if err != nil {
t.Fatal(err)
}
cols, err = rows.Columns()
if err != nil {
t.Fatal(err)
}
if len(cols) != 0 {
t.Fatalf("unexpected number of columns %d in response to an empty query", len(cols))
}
if rows.Next() {
t.Fatal("unexpected row")
}
if rows.Err() != nil {
t.Fatal(rows.Err())
}
}
// Test that rows.Columns() is correct even if there are no result rows.
func TestEmptyResultSetColumns(t *testing.T) {
db := openTestConn(t)
defer db.Close()
rows, err := db.Query("SELECT 1 AS a, text 'bar' AS bar WHERE FALSE")
if err != nil {
t.Fatal(err)
}
cols, err := rows.Columns()
if err != nil {
t.Fatal(err)
}
if len(cols) != 2 {
t.Fatalf("unexpected number of columns %d in response to an empty query", len(cols))
}
if rows.Next() {
t.Fatal("unexpected row")
}
if rows.Err() != nil {
t.Fatal(rows.Err())
}
if cols[0] != "a" || cols[1] != "bar" {
t.Fatalf("unexpected Columns result %v", cols)
}
stmt, err := db.Prepare("SELECT $1::int AS a, text 'bar' AS bar WHERE FALSE")
if err != nil {
t.Fatal(err)
}
rows, err = stmt.Query(1)
if err != nil {
t.Fatal(err)
}
cols, err = rows.Columns()
if err != nil {
t.Fatal(err)
}
if len(cols) != 2 {
t.Fatalf("unexpected number of columns %d in response to an empty query", len(cols))
}
if rows.Next() {
t.Fatal("unexpected row")
}
if rows.Err() != nil {
t.Fatal(rows.Err())
}
if cols[0] != "a" || cols[1] != "bar" {
t.Fatalf("unexpected Columns result %v", cols)
}
}
func TestEncodeDecode(t *testing.T) {
db := openTestConn(t)
defer db.Close()
q := `
SELECT
E'\\000\\001\\002'::bytea,
'foobar'::text,
NULL::integer,
'2000-1-1 01:02:03.04-7'::timestamptz,
0::boolean,
123,
-321,
3.14::float8
WHERE
E'\\000\\001\\002'::bytea = $1
AND 'foobar'::text = $2
AND $3::integer is NULL
`
// AND '2000-1-1 12:00:00.000000-7'::timestamp = $3
exp1 := []byte{0, 1, 2}
exp2 := "foobar"
r, err := db.Query(q, exp1, exp2, nil)
if err != nil {
t.Fatal(err)
}
defer r.Close()
if !r.Next() {
if r.Err() != nil {
t.Fatal(r.Err())
}
t.Fatal("expected row")
}
var got1 []byte
var got2 string
var got3 = sql.NullInt64{Valid: true}
var got4 time.Time
var got5, got6, got7, got8 interface{}
err = r.Scan(&got1, &got2, &got3, &got4, &got5, &got6, &got7, &got8)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(exp1, got1) {
t.Errorf("expected %q byte: %q", exp1, got1)
}
if !reflect.DeepEqual(exp2, got2) {
t.Errorf("expected %q byte: %q", exp2, got2)
}
if got3.Valid {
t.Fatal("expected invalid")
}
if got4.Year() != 2000 {
t.Fatal("wrong year")
}
if got5 != false {
t.Fatalf("expected false, got %q", got5)
}
if got6 != int64(123) {
t.Fatalf("expected 123, got %d", got6)
}
if got7 != int64(-321) {
t.Fatalf("expected -321, got %d", got7)
}
if got8 != float64(3.14) {
t.Fatalf("expected 3.14, got %f", got8)
}
}
func TestNoData(t *testing.T) {
db := openTestConn(t)
defer db.Close()
st, err := db.Prepare("SELECT 1 WHERE true = false")
if err != nil {
t.Fatal(err)
}
defer st.Close()
r, err := st.Query()
if err != nil {
t.Fatal(err)
}
defer r.Close()
if r.Next() {
if r.Err() != nil {
t.Fatal(r.Err())
}
t.Fatal("unexpected row")
}
_, err = db.Query("SELECT * FROM nonexistenttable WHERE age=$1", 20)
if err == nil {
t.Fatal("Should have raised an error on non existent table")
}
_, err = db.Query("SELECT * FROM nonexistenttable")
if err == nil {
t.Fatal("Should have raised an error on non existent table")
}
}
func TestErrorDuringStartup(t *testing.T) {
// Don't use the normal connection setup, this is intended to
// blow up in the startup packet from a non-existent user.
db, err := openTestConnConninfo("user=thisuserreallydoesntexist")
if err != nil {
t.Fatal(err)
}
defer db.Close()
_, err = db.Begin()
if err == nil {
t.Fatal("expected error")
}
e, ok := err.(*Error)
if !ok {
t.Fatalf("expected Error, got %#v", err)
} else if e.Code.Name() != "invalid_authorization_specification" && e.Code.Name() != "invalid_password" {
t.Fatalf("expected invalid_authorization_specification or invalid_password, got %s (%+v)", e.Code.Name(), err)
}
}
func TestBadConn(t *testing.T) {
var err error
cn := conn{}
func() {
defer cn.errRecover(&err)
panic(io.EOF)
}()
if err != driver.ErrBadConn {
t.Fatalf("expected driver.ErrBadConn, got: %#v", err)
}
if !cn.bad {
t.Fatalf("expected cn.bad")
}
cn = conn{}
func() {
defer cn.errRecover(&err)
e := &Error{Severity: Efatal}
panic(e)
}()
if err != driver.ErrBadConn {
t.Fatalf("expected driver.ErrBadConn, got: %#v", err)
}
if !cn.bad {
t.Fatalf("expected cn.bad")
}
}
// TestCloseBadConn tests that the underlying connection can be closed with
// Close after an error.
func TestCloseBadConn(t *testing.T) {
nc, err := net.Dial("tcp", "localhost:5432")
if err != nil {
t.Fatal(err)
}
cn := conn{c: nc}
func() {
defer cn.errRecover(&err)
panic(io.EOF)
}()
// Verify we can write before closing.
if _, err := nc.Write(nil); err != nil {
t.Fatal(err)
}
// First close should close the connection.
if err := cn.Close(); err != nil {
t.Fatal(err)
}
// During the Go 1.9 cycle, https://github.com/golang/go/commit/3792db5
// changed this error from
//
// net.errClosing = errors.New("use of closed network connection")
//
// to
//
// internal/poll.ErrClosing = errors.New("use of closed file or network connection")
const errClosing = "use of closed"
// Verify write after closing fails.
if _, err := nc.Write(nil); err == nil {
t.Fatal("expected error")
} else if !strings.Contains(err.Error(), errClosing) {
t.Fatalf("expected %s error, got %s", errClosing, err)
}
// Verify second close fails.
if err := cn.Close(); err == nil {
t.Fatal("expected error")
} else if !strings.Contains(err.Error(), errClosing) {
t.Fatalf("expected %s error, got %s", errClosing, err)
}
}
func TestErrorOnExec(t *testing.T) {
db := openTestConn(t)
defer db.Close()
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
_, err = txn.Exec("CREATE TEMPORARY TABLE foo(f1 int PRIMARY KEY)")
if err != nil {
t.Fatal(err)
}
_, err = txn.Exec("INSERT INTO foo VALUES (0), (0)")
if err == nil {
t.Fatal("Should have raised error")
}
e, ok := err.(*Error)
if !ok {
t.Fatalf("expected Error, got %#v", err)
} else if e.Code.Name() != "unique_violation" {
t.Fatalf("expected unique_violation, got %s (%+v)", e.Code.Name(), err)
}
}
func TestErrorOnQuery(t *testing.T) {
db := openTestConn(t)
defer db.Close()
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
_, err = txn.Exec("CREATE TEMPORARY TABLE foo(f1 int PRIMARY KEY)")
if err != nil {
t.Fatal(err)
}
_, err = txn.Query("INSERT INTO foo VALUES (0), (0)")
if err == nil {
t.Fatal("Should have raised error")
}
e, ok := err.(*Error)
if !ok {
t.Fatalf("expected Error, got %#v", err)
} else if e.Code.Name() != "unique_violation" {
t.Fatalf("expected unique_violation, got %s (%+v)", e.Code.Name(), err)
}
}
func TestErrorOnQueryRowSimpleQuery(t *testing.T) {
db := openTestConn(t)
defer db.Close()
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
_, err = txn.Exec("CREATE TEMPORARY TABLE foo(f1 int PRIMARY KEY)")
if err != nil {
t.Fatal(err)
}
var v int
err = txn.QueryRow("INSERT INTO foo VALUES (0), (0)").Scan(&v)
if err == nil {
t.Fatal("Should have raised error")
}
e, ok := err.(*Error)
if !ok {
t.Fatalf("expected Error, got %#v", err)
} else if e.Code.Name() != "unique_violation" {
t.Fatalf("expected unique_violation, got %s (%+v)", e.Code.Name(), err)
}
}
// Test the QueryRow bug workarounds in stmt.exec() and simpleQuery()
func TestQueryRowBugWorkaround(t *testing.T) {
db := openTestConn(t)
defer db.Close()
// stmt.exec()
_, err := db.Exec("CREATE TEMP TABLE notnulltemp (a varchar(10) not null)")
if err != nil {
t.Fatal(err)
}
var a string
err = db.QueryRow("INSERT INTO notnulltemp(a) values($1) RETURNING a", nil).Scan(&a)
if err == sql.ErrNoRows {
t.Fatalf("expected constraint violation error; got: %v", err)
}
pge, ok := err.(*Error)
if !ok {
t.Fatalf("expected *Error; got: %#v", err)
}
if pge.Code.Name() != "not_null_violation" {
t.Fatalf("expected not_null_violation; got: %s (%+v)", pge.Code.Name(), err)
}
// Test workaround in simpleQuery()
tx, err := db.Begin()
if err != nil {
t.Fatalf("unexpected error %s in Begin", err)
}
defer tx.Rollback()
_, err = tx.Exec("SET LOCAL check_function_bodies TO FALSE")
if err != nil {
t.Fatalf("could not disable check_function_bodies: %s", err)
}
_, err = tx.Exec(`
CREATE OR REPLACE FUNCTION bad_function()
RETURNS integer
-- hack to prevent the function from being inlined
SET check_function_bodies TO TRUE
AS $$
SELECT text 'bad'
$$ LANGUAGE sql`)
if err != nil {
t.Fatalf("could not create function: %s", err)
}
err = tx.QueryRow("SELECT * FROM bad_function()").Scan(&a)
if err == nil {
t.Fatalf("expected error")
}
pge, ok = err.(*Error)
if !ok {
t.Fatalf("expected *Error; got: %#v", err)
}
if pge.Code.Name() != "invalid_function_definition" {
t.Fatalf("expected invalid_function_definition; got: %s (%+v)", pge.Code.Name(), err)
}
err = tx.Rollback()
if err != nil {
t.Fatalf("unexpected error %s in Rollback", err)
}
// Also test that simpleQuery()'s workaround works when the query fails
// after a row has been received.
rows, err := db.Query(`
select
(select generate_series(1, ss.i))
from (select gs.i
from generate_series(1, 2) gs(i)
order by gs.i limit 2) ss`)
if err != nil {
t.Fatalf("query failed: %s", err)
}
if !rows.Next() {
t.Fatalf("expected at least one result row; got %s", rows.Err())
}
var i int
err = rows.Scan(&i)
if err != nil {
t.Fatalf("rows.Scan() failed: %s", err)
}
if i != 1 {
t.Fatalf("unexpected value for i: %d", i)
}
if rows.Next() {
t.Fatalf("unexpected row")
}
pge, ok = rows.Err().(*Error)
if !ok {
t.Fatalf("expected *Error; got: %#v", err)
}
if pge.Code.Name() != "cardinality_violation" {
t.Fatalf("expected cardinality_violation; got: %s (%+v)", pge.Code.Name(), rows.Err())
}
}
func TestSimpleQuery(t *testing.T) {
db := openTestConn(t)
defer db.Close()
r, err := db.Query("select 1")
if err != nil {
t.Fatal(err)
}
defer r.Close()
if !r.Next() {
t.Fatal("expected row")
}
}
func TestBindError(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Exec("create temp table test (i integer)")
if err != nil {
t.Fatal(err)
}
_, err = db.Query("select * from test where i=$1", "hhh")
if err == nil {
t.Fatal("expected an error")
}
// Should not get error here
r, err := db.Query("select * from test where i=$1", 1)
if err != nil {
t.Fatal(err)
}
defer r.Close()
}
func TestParseErrorInExtendedQuery(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Query("PARSE_ERROR $1", 1)
pqErr, _ := err.(*Error)
// Expecting a syntax error.
if err == nil || pqErr == nil || pqErr.Code != "42601" {
t.Fatalf("expected syntax error, got %s", err)
}
rows, err := db.Query("SELECT 1")
if err != nil {
t.Fatal(err)
}
rows.Close()
}
// TestReturning tests that an INSERT query using the RETURNING clause returns a row.
func TestReturning(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Exec("CREATE TEMP TABLE distributors (did integer default 0, dname text)")
if err != nil {
t.Fatal(err)
}
rows, err := db.Query("INSERT INTO distributors (did, dname) VALUES (DEFAULT, 'XYZ Widgets') " +
"RETURNING did;")
if err != nil {
t.Fatal(err)
}
if !rows.Next() {
t.Fatal("no rows")
}
var did int
err = rows.Scan(&did)
if err != nil {
t.Fatal(err)
}
if did != 0 {
t.Fatalf("bad value for did: got %d, want %d", did, 0)
}
if rows.Next() {
t.Fatal("unexpected next row")
}
err = rows.Err()
if err != nil {
t.Fatal(err)
}
}
func TestIssue186(t *testing.T) {
db := openTestConn(t)
defer db.Close()
// Exec() a query which returns results
_, err := db.Exec("VALUES (1), (2), (3)")
if err != nil {
t.Fatal(err)
}
_, err = db.Exec("VALUES ($1), ($2), ($3)", 1, 2, 3)
if err != nil {
t.Fatal(err)
}
// Query() a query which doesn't return any results
txn, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer txn.Rollback()
rows, err := txn.Query("CREATE TEMP TABLE foo(f1 int)")
if err != nil {
t.Fatal(err)
}
if err = rows.Close(); err != nil {
t.Fatal(err)
}
// small trick to get NoData from a parameterized query
_, err = txn.Exec("CREATE RULE nodata AS ON INSERT TO foo DO INSTEAD NOTHING")
if err != nil {
t.Fatal(err)
}
rows, err = txn.Query("INSERT INTO foo VALUES ($1)", 1)
if err != nil {
t.Fatal(err)
}
if err = rows.Close(); err != nil {
t.Fatal(err)
}
}
func TestIssue196(t *testing.T) {
db := openTestConn(t)
defer db.Close()
row := db.QueryRow("SELECT float4 '0.10000122' = $1, float8 '35.03554004971999' = $2",
float32(0.10000122), float64(35.03554004971999))
var float4match, float8match bool
err := row.Scan(&float4match, &float8match)
if err != nil {
t.Fatal(err)
}
if !float4match {
t.Errorf("Expected float4 fidelity to be maintained; got no match")
}
if !float8match {
t.Errorf("Expected float8 fidelity to be maintained; got no match")
}
}
// Test that any CommandComplete messages sent before the query results are
// ignored.
func TestIssue282(t *testing.T) {
db := openTestConn(t)
defer db.Close()
var searchPath string
err := db.QueryRow(`
SET LOCAL search_path TO pg_catalog;
SET LOCAL search_path TO pg_catalog;
SHOW search_path`).Scan(&searchPath)
if err != nil {
t.Fatal(err)
}
if searchPath != "pg_catalog" {
t.Fatalf("unexpected search_path %s", searchPath)
}
}
func TestReadFloatPrecision(t *testing.T) {
db := openTestConn(t)
defer db.Close()
row := db.QueryRow("SELECT float4 '0.10000122', float8 '35.03554004971999'")
var float4val float32
var float8val float64
err := row.Scan(&float4val, &float8val)
if err != nil {
t.Fatal(err)
}
if float4val != float32(0.10000122) {
t.Errorf("Expected float4 fidelity to be maintained; got no match")
}
if float8val != float64(35.03554004971999) {
t.Errorf("Expected float8 fidelity to be maintained; got no match")
}
}
func TestXactMultiStmt(t *testing.T) {
// minified test case based on bug reports from
// pico303@gmail.com and rangelspam@gmail.com
t.Skip("Skipping failing test")
db := openTestConn(t)
defer db.Close()
tx, err := db.Begin()
if err != nil {
t.Fatal(err)
}
defer tx.Commit()
rows, err := tx.Query("select 1")
if err != nil {
t.Fatal(err)
}
if rows.Next() {
var val int32
if err = rows.Scan(&val); err != nil {
t.Fatal(err)
}
} else {
t.Fatal("Expected at least one row in first query in xact")
}
rows2, err := tx.Query("select 2")
if err != nil {
t.Fatal(err)
}
if rows2.Next() {
var val2 int32
if err := rows2.Scan(&val2); err != nil {
t.Fatal(err)
}
} else {
t.Fatal("Expected at least one row in second query in xact")
}
if err = rows.Err(); err != nil {
t.Fatal(err)
}
if err = rows2.Err(); err != nil {
t.Fatal(err)
}
if err = tx.Commit(); err != nil {
t.Fatal(err)
}
}
var envParseTests = []struct {
Expected map[string]string
Env []string
}{
{
Env: []string{"PGDATABASE=hello", "PGUSER=goodbye"},
Expected: map[string]string{"dbname": "hello", "user": "goodbye"},
},
{
Env: []string{"PGDATESTYLE=ISO, MDY"},
Expected: map[string]string{"datestyle": "ISO, MDY"},
},
{
Env: []string{"PGCONNECT_TIMEOUT=30"},
Expected: map[string]string{"connect_timeout": "30"},
},
}
func TestParseEnviron(t *testing.T) {
for i, tt := range envParseTests {
results := parseEnviron(tt.Env)
if !reflect.DeepEqual(tt.Expected, results) {
t.Errorf("%d: Expected: %#v Got: %#v", i, tt.Expected, results)
}
}
}
func TestParseComplete(t *testing.T) {
tpc := func(commandTag string, command string, affectedRows int64, shouldFail bool) {
defer func() {
if p := recover(); p != nil {
if !shouldFail {
t.Error(p)
}
}
}()
cn := &conn{}
res, c := cn.parseComplete(commandTag)
if c != command {
t.Errorf("Expected %v, got %v", command, c)
}
n, err := res.RowsAffected()
if err != nil {
t.Fatal(err)
}
if n != affectedRows {
t.Errorf("Expected %d, got %d", affectedRows, n)
}
}
tpc("ALTER TABLE", "ALTER TABLE", 0, false)
tpc("INSERT 0 1", "INSERT", 1, false)
tpc("UPDATE 100", "UPDATE", 100, false)
tpc("SELECT 100", "SELECT", 100, false)
tpc("FETCH 100", "FETCH", 100, false)
// allow COPY (and others) without row count
tpc("COPY", "COPY", 0, false)
// don't fail on command tags we don't recognize
tpc("UNKNOWNCOMMANDTAG", "UNKNOWNCOMMANDTAG", 0, false)
// failure cases
tpc("INSERT 1", "", 0, true) // missing oid
tpc("UPDATE 0 1", "", 0, true) // too many numbers
tpc("SELECT foo", "", 0, true) // invalid row count
}
// Test interface conformance.
var (
_ driver.Execer = (*conn)(nil)
_ driver.Queryer = (*conn)(nil)
)
func TestNullAfterNonNull(t *testing.T) {
db := openTestConn(t)
defer db.Close()
r, err := db.Query("SELECT 9::integer UNION SELECT NULL::integer")
if err != nil {
t.Fatal(err)
}
var n sql.NullInt64
if !r.Next() {
if r.Err() != nil {
t.Fatal(err)
}
t.Fatal("expected row")
}
if err := r.Scan(&n); err != nil {
t.Fatal(err)
}
if n.Int64 != 9 {
t.Fatalf("expected 2, not %d", n.Int64)
}
if !r.Next() {
if r.Err() != nil {
t.Fatal(err)
}
t.Fatal("expected row")
}
if err := r.Scan(&n); err != nil {
t.Fatal(err)
}
if n.Valid {
t.Fatal("expected n to be invalid")
}
if n.Int64 != 0 {
t.Fatalf("expected n to 2, not %d", n.Int64)
}
}
func Test64BitErrorChecking(t *testing.T) {
defer func() {
if err := recover(); err != nil {
t.Fatal("panic due to 0xFFFFFFFF != -1 " +
"when int is 64 bits")
}
}()
db := openTestConn(t)
defer db.Close()
r, err := db.Query(`SELECT *
FROM (VALUES (0::integer, NULL::text), (1, 'test string')) AS t;`)
if err != nil {
t.Fatal(err)
}
defer r.Close()
for r.Next() {
}
}
func TestCommit(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Exec("CREATE TEMP TABLE temp (a int)")
if err != nil {
t.Fatal(err)
}
sqlInsert := "INSERT INTO temp VALUES (1)"
sqlSelect := "SELECT * FROM temp"
tx, err := db.Begin()
if err != nil {
t.Fatal(err)
}
_, err = tx.Exec(sqlInsert)
if err != nil {
t.Fatal(err)
}
err = tx.Commit()
if err != nil {
t.Fatal(err)
}
var i int
err = db.QueryRow(sqlSelect).Scan(&i)
if err != nil {
t.Fatal(err)
}
if i != 1 {
t.Fatalf("expected 1, got %d", i)
}
}
func TestErrorClass(t *testing.T) {
db := openTestConn(t)
defer db.Close()
_, err := db.Query("SELECT int 'notint'")
if err == nil {
t.Fatal("expected error")
}
pge, ok := err.(*Error)
if !ok {
t.Fatalf("expected *pq.Error, got %#+v", err)
}
if pge.Code.Class() != "22" {
t.Fatalf("expected class 28, got %v", pge.Code.Class())
}
if pge.Code.Class().Name() != "data_exception" {
t.Fatalf("expected data_exception, got %v", pge.Code.Class().Name())
}
}
func TestParseOpts(t *testing.T) {
tests := []struct {
in string
expected values
valid bool
}{
{"dbname=hello user=goodbye", values{"dbname": "hello", "user": "goodbye"}, true},
{"dbname=hello user=goodbye ", values{"dbname": "hello", "user": "goodbye"}, true},
{"dbname = hello user=goodbye", values{"dbname": "hello", "user": "goodbye"}, true},
{"dbname=hello user =goodbye", values{"dbname": "hello", "user": "goodbye"}, true},
{"dbname=hello user= goodbye", values{"dbname": "hello", "user": "goodbye"}, true},
{"host=localhost password='correct horse battery staple'", values{"host": "localhost", "password": "correct horse battery staple"}, true},
{"dbname=データベース password=パスワード", values{"dbname": "データベース", "password": "パスワード"}, true},
{"dbname=hello user=''", values{"dbname": "hello", "user": ""}, true},
{"user='' dbname=hello", values{"dbname": "hello", "user": ""}, true},
// The last option value is an empty string if there's no non-whitespace after its =
{"dbname=hello user= ", values{"dbname": "hello", "user": ""}, true},
// The parser ignores spaces after = and interprets the next set of non-whitespace characters as the value.
{"user= password=foo", values{"user": "password=foo"}, true},
// Backslash escapes next char
{`user=a\ \'\\b`, values{"user": `a '\b`}, true},
{`user='a \'b'`, values{"user": `a 'b`}, true},
// Incomplete escape
{`user=x\`, values{}, false},
// No '=' after the key
{"postgre://marko@internet", values{}, false},
{"dbname user=goodbye", values{}, false},
{"user=foo blah", values{}, false},
{"user=foo blah ", values{}, false},
// Unterminated quoted value
{"dbname=hello user='unterminated", values{}, false},
}
for _, test := range tests {
o := make(values)
err := parseOpts(test.in, o)
switch {
case err != nil && test.valid:
t.Errorf("%q got unexpected error: %s", test.in, err)
case err == nil && test.valid && !reflect.DeepEqual(test.expected, o):
t.Errorf("%q got: %#v want: %#v", test.in, o, test.expected)
case err == nil && !test.valid:
t.Errorf("%q expected an error", test.in)
}
}
}
func TestRuntimeParameters(t *testing.T) {
tests := []struct {
conninfo string
param string
expected string
success bool
}{
// invalid parameter
{"DOESNOTEXIST=foo", "", "", false},
// we can only work with a specific value for these two
{"client_encoding=SQL_ASCII", "", "", false},
{"datestyle='ISO, YDM'", "", "", false},
// "options" should work exactly as it does in libpq
{"options='-c search_path=pqgotest'", "search_path", "pqgotest", true},
// pq should override client_encoding in this case
{"options='-c client_encoding=SQL_ASCII'", "client_encoding", "UTF8", true},
// allow client_encoding to be set explicitly
{"client_encoding=UTF8", "client_encoding", "UTF8", true},
// test a runtime parameter not supported by libpq
{"work_mem='139kB'", "work_mem", "139kB", true},
// test fallback_application_name
{"application_name=foo fallback_application_name=bar", "application_name", "foo", true},
{"application_name='' fallback_application_name=bar", "application_name", "", true},
{"fallback_application_name=bar", "application_name", "bar", true},
}
for _, test := range tests {
db, err := openTestConnConninfo(test.conninfo)
if err != nil {
t.Fatal(err)
}
// application_name didn't exist before 9.0
if test.param == "application_name" && getServerVersion(t, db) < 90000 {
db.Close()
continue
}
tryGetParameterValue := func() (value string, success bool) {
defer db.Close()
row := db.QueryRow("SELECT current_setting($1)", test.param)
err = row.Scan(&value)
if err != nil {
return "", false
}
return value, true
}
value, success := tryGetParameterValue()
if success != test.success && !test.success {
t.Fatalf("%v: unexpected error: %v", test.conninfo, err)
}
if success != test.success {
t.Fatalf("unexpected outcome %v (was expecting %v) for conninfo \"%s\"",
success, test.success, test.conninfo)
}
if value != test.expected {
t.Fatalf("bad value for %s: got %s, want %s with conninfo \"%s\"",
test.param, value, test.expected, test.conninfo)
}
}
}
func TestIsUTF8(t *testing.T) {
var cases = []struct {
name string
want bool
}{
{"unicode", true},
{"utf-8", true},
{"utf_8", true},
{"UTF-8", true},
{"UTF8", true},
{"utf8", true},
{"u n ic_ode", true},
{"ut_f%8", true},
{"ubf8", false},
{"punycode", false},
}
for _, test := range cases {
if g := isUTF8(test.name); g != test.want {
t.Errorf("isUTF8(%q) = %v want %v", test.name, g, test.want)
}
}
}
func TestQuoteIdentifier(t *testing.T) {
var cases = []struct {
input string
want string
}{
{`foo`, `"foo"`},
{`foo bar baz`, `"foo bar baz"`},
{`foo"bar`, `"foo""bar"`},
{"foo\x00bar", `"foo"`},
{"\x00foo", `""`},
}
for _, test := range cases {
got := QuoteIdentifier(test.input)
if got != test.want {
t.Errorf("QuoteIdentifier(%q) = %v want %v", test.input, got, test.want)
}
}
}
func TestRowsResultTag(t *testing.T) {
type ResultTag interface {
Result() driver.Result
Tag() string
}
tests := []struct {
query string
tag string
ra int64
}{
{
query: "CREATE TEMP TABLE temp (a int)",
tag: "CREATE TABLE",
},
{
query: "INSERT INTO temp VALUES (1), (2)",
tag: "INSERT",
ra: 2,
},
{
query: "SELECT 1",
},
// A SELECT anywhere should take precedent.
{
query: "SELECT 1; INSERT INTO temp VALUES (1), (2)",
},
{
query: "INSERT INTO temp VALUES (1), (2); SELECT 1",
},
// Multiple statements that don't return rows should return the last tag.
{
query: "CREATE TEMP TABLE t (a int); DROP TABLE t",
tag: "DROP TABLE",
},
// Ensure a rows-returning query in any position among various tags-returing
// statements will prefer the rows.
{
query: "SELECT 1; CREATE TEMP TABLE t (a int); DROP TABLE t",
},
{
query: "CREATE TEMP TABLE t (a int); SELECT 1; DROP TABLE t",
},
{
query: "CREATE TEMP TABLE t (a int); DROP TABLE t; SELECT 1",
},
// Verify that an no-results query doesn't set the tag.
{
query: "CREATE TEMP TABLE t (a int); SELECT 1 WHERE FALSE; DROP TABLE t;",
},
}
// If this is the only test run, this will correct the connection string.
openTestConn(t).Close()
conn, err := Open("")
if err != nil {
t.Fatal(err)
}
defer conn.Close()
q := conn.(driver.Queryer)
for _, test := range tests {
if rows, err := q.Query(test.query, nil); err != nil {
t.Fatalf("%s: %s", test.query, err)
} else {
r := rows.(ResultTag)
if tag := r.Tag(); tag != test.tag {
t.Fatalf("%s: unexpected tag %q", test.query, tag)
}
res := r.Result()
if ra, _ := res.RowsAffected(); ra != test.ra {
t.Fatalf("%s: unexpected rows affected: %d", test.query, ra)
}
rows.Close()
}
}
}
// TestQuickClose tests that closing a query early allows a subsequent query to work.
func TestQuickClose(t *testing.T) {
db := openTestConn(t)
defer db.Close()
tx, err := db.Begin()
if err != nil {
t.Fatal(err)
}
rows, err := tx.Query("SELECT 1; SELECT 2;")
if err != nil {
t.Fatal(err)
}
if err := rows.Close(); err != nil {
t.Fatal(err)
}
var id int
if err := tx.QueryRow("SELECT 3").Scan(&id); err != nil {
t.Fatal(err)
}
if id != 3 {
t.Fatalf("unexpected %d", id)
}
if err := tx.Commit(); err != nil {
t.Fatal(err)
}
}