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pgconn_test.go
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package pgconn_test
import (
"bytes"
"compress/gzip"
"context"
"crypto/tls"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"math"
"net"
"os"
"strconv"
"strings"
"testing"
"time"
"github.com/jackc/pgconn"
"github.com/jackc/pgmock"
"github.com/jackc/pgproto3/v2"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestConnect(t *testing.T) {
tests := []struct {
name string
env string
}{
{"Unix socket", "PGX_TEST_UNIX_SOCKET_CONN_STRING"},
{"TCP", "PGX_TEST_TCP_CONN_STRING"},
{"Plain password", "PGX_TEST_PLAIN_PASSWORD_CONN_STRING"},
{"MD5 password", "PGX_TEST_MD5_PASSWORD_CONN_STRING"},
{"SCRAM password", "PGX_TEST_SCRAM_PASSWORD_CONN_STRING"},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
connString := os.Getenv(tt.env)
if connString == "" {
t.Skipf("Skipping due to missing environment variable %v", tt.env)
}
conn, err := pgconn.Connect(context.Background(), connString)
require.NoError(t, err)
closeConn(t, conn)
})
}
}
// TestConnectTLS is separate from other connect tests because it has an additional test to ensure it really is a secure
// connection.
func TestConnectTLS(t *testing.T) {
t.Parallel()
connString := os.Getenv("PGX_TEST_TLS_CONN_STRING")
if connString == "" {
t.Skipf("Skipping due to missing environment variable %v", "PGX_TEST_TLS_CONN_STRING")
}
conn, err := pgconn.Connect(context.Background(), connString)
require.NoError(t, err)
if _, ok := conn.Conn().(*tls.Conn); !ok {
t.Error("not a TLS connection")
}
closeConn(t, conn)
}
type pgmockWaitStep time.Duration
func (s pgmockWaitStep) Step(*pgproto3.Backend) error {
time.Sleep(time.Duration(s))
return nil
}
func TestConnectTimeout(t *testing.T) {
t.Parallel()
tests := []struct {
name string
connect func(connStr string) error
}{
{
name: "via context that times out",
connect: func(connStr string) error {
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*50)
defer cancel()
_, err := pgconn.Connect(ctx, connStr)
return err
},
},
{
name: "via config ConnectTimeout",
connect: func(connStr string) error {
conf, err := pgconn.ParseConfig(connStr)
require.NoError(t, err)
conf.ConnectTimeout = time.Microsecond * 50
_, err = pgconn.ConnectConfig(context.Background(), conf)
return err
},
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
script := &pgmock.Script{
Steps: []pgmock.Step{
pgmock.ExpectAnyMessage(&pgproto3.StartupMessage{ProtocolVersion: pgproto3.ProtocolVersionNumber, Parameters: map[string]string{}}),
pgmock.SendMessage(&pgproto3.AuthenticationOk{}),
pgmockWaitStep(time.Millisecond * 500),
pgmock.SendMessage(&pgproto3.BackendKeyData{ProcessID: 0, SecretKey: 0}),
pgmock.SendMessage(&pgproto3.ReadyForQuery{TxStatus: 'I'}),
},
}
ln, err := net.Listen("tcp", "127.0.0.1:")
require.NoError(t, err)
defer ln.Close()
serverErrChan := make(chan error, 1)
go func() {
defer close(serverErrChan)
conn, err := ln.Accept()
if err != nil {
serverErrChan <- err
return
}
defer conn.Close()
err = conn.SetDeadline(time.Now().Add(time.Millisecond * 450))
if err != nil {
serverErrChan <- err
return
}
err = script.Run(pgproto3.NewBackend(pgproto3.NewChunkReader(conn), conn))
if err != nil {
serverErrChan <- err
return
}
}()
parts := strings.Split(ln.Addr().String(), ":")
host := parts[0]
port := parts[1]
connStr := fmt.Sprintf("sslmode=disable host=%s port=%s", host, port)
tooLate := time.Now().Add(time.Millisecond * 500)
err = tt.connect(connStr)
require.True(t, pgconn.Timeout(err), err)
require.True(t, time.Now().Before(tooLate))
})
}
}
func TestConnectTimeoutStuckOnTLSHandshake(t *testing.T) {
t.Parallel()
tests := []struct {
name string
connect func(connStr string) error
}{
{
name: "via context that times out",
connect: func(connStr string) error {
ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*10)
defer cancel()
_, err := pgconn.Connect(ctx, connStr)
return err
},
},
{
name: "via config ConnectTimeout",
connect: func(connStr string) error {
conf, err := pgconn.ParseConfig(connStr)
require.NoError(t, err)
conf.ConnectTimeout = time.Millisecond * 10
_, err = pgconn.ConnectConfig(context.Background(), conf)
return err
},
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
ln, err := net.Listen("tcp", "127.0.0.1:")
require.NoError(t, err)
defer ln.Close()
serverErrChan := make(chan error)
defer close(serverErrChan)
go func() {
conn, err := ln.Accept()
if err != nil {
serverErrChan <- err
return
}
defer conn.Close()
var buf []byte
_, err = conn.Read(buf)
if err != nil {
serverErrChan <- err
return
}
// Sleeping to hang the TLS handshake.
time.Sleep(time.Minute)
}()
parts := strings.Split(ln.Addr().String(), ":")
host := parts[0]
port := parts[1]
connStr := fmt.Sprintf("host=%s port=%s", host, port)
errChan := make(chan error)
go func() {
err := tt.connect(connStr)
errChan <- err
}()
select {
case err = <-errChan:
require.True(t, pgconn.Timeout(err), err)
case err = <-serverErrChan:
t.Fatalf("server failed with error: %s", err)
case <-time.After(time.Millisecond * 100):
t.Fatal("exceeded connection timeout without erroring out")
}
})
}
}
func TestConnectInvalidUser(t *testing.T) {
t.Parallel()
connString := os.Getenv("PGX_TEST_TCP_CONN_STRING")
if connString == "" {
t.Skipf("Skipping due to missing environment variable %v", "PGX_TEST_TCP_CONN_STRING")
}
config, err := pgconn.ParseConfig(connString)
require.NoError(t, err)
config.User = "pgxinvalidusertest"
_, err = pgconn.ConnectConfig(context.Background(), config)
require.Error(t, err)
pgErr, ok := errors.Unwrap(err).(*pgconn.PgError)
if !ok {
t.Fatalf("Expected to receive a wrapped PgError, instead received: %v", err)
}
if pgErr.Code != "28000" && pgErr.Code != "28P01" {
t.Fatalf("Expected to receive a PgError with code 28000 or 28P01, instead received: %v", pgErr)
}
}
func TestConnectWithConnectionRefused(t *testing.T) {
t.Parallel()
// Presumably nothing is listening on 127.0.0.1:1
conn, err := pgconn.Connect(context.Background(), "host=127.0.0.1 port=1")
if err == nil {
conn.Close(context.Background())
t.Fatal("Expected error establishing connection to bad port")
}
}
func TestConnectCustomDialer(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
dialed := false
config.DialFunc = func(ctx context.Context, network, address string) (net.Conn, error) {
dialed = true
return net.Dial(network, address)
}
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
require.True(t, dialed)
closeConn(t, conn)
}
func TestConnectCustomLookup(t *testing.T) {
t.Parallel()
connString := os.Getenv("PGX_TEST_TCP_CONN_STRING")
if connString == "" {
t.Skipf("Skipping due to missing environment variable %v", "PGX_TEST_TCP_CONN_STRING")
}
config, err := pgconn.ParseConfig(connString)
require.NoError(t, err)
looked := false
config.LookupFunc = func(ctx context.Context, host string) (addrs []string, err error) {
looked = true
return net.LookupHost(host)
}
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
require.True(t, looked)
closeConn(t, conn)
}
func TestConnectCustomLookupWithPort(t *testing.T) {
t.Parallel()
connString := os.Getenv("PGX_TEST_TCP_CONN_STRING")
if connString == "" {
t.Skipf("Skipping due to missing environment variable %v", "PGX_TEST_TCP_CONN_STRING")
}
config, err := pgconn.ParseConfig(connString)
require.NoError(t, err)
origPort := config.Port
// Chnage the config an invalid port so it will fail if used
config.Port = 0
looked := false
config.LookupFunc = func(ctx context.Context, host string) ([]string, error) {
looked = true
addrs, err := net.LookupHost(host)
if err != nil {
return nil, err
}
for i := range addrs {
addrs[i] = net.JoinHostPort(addrs[i], strconv.FormatUint(uint64(origPort), 10))
}
return addrs, nil
}
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
require.True(t, looked)
closeConn(t, conn)
}
func TestConnectWithRuntimeParams(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
config.RuntimeParams = map[string]string{
"application_name": "pgxtest",
"search_path": "myschema",
}
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
defer closeConn(t, conn)
result := conn.ExecParams(context.Background(), "show application_name", nil, nil, nil, nil).Read()
require.Nil(t, result.Err)
assert.Equal(t, 1, len(result.Rows))
assert.Equal(t, "pgxtest", string(result.Rows[0][0]))
result = conn.ExecParams(context.Background(), "show search_path", nil, nil, nil, nil).Read()
require.Nil(t, result.Err)
assert.Equal(t, 1, len(result.Rows))
assert.Equal(t, "myschema", string(result.Rows[0][0]))
}
func TestConnectWithFallback(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
// Prepend current primary config to fallbacks
config.Fallbacks = append([]*pgconn.FallbackConfig{
&pgconn.FallbackConfig{
Host: config.Host,
Port: config.Port,
TLSConfig: config.TLSConfig,
},
}, config.Fallbacks...)
// Make primary config bad
config.Host = "localhost"
config.Port = 1 // presumably nothing listening here
// Prepend bad first fallback
config.Fallbacks = append([]*pgconn.FallbackConfig{
&pgconn.FallbackConfig{
Host: "localhost",
Port: 1,
TLSConfig: config.TLSConfig,
},
}, config.Fallbacks...)
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
closeConn(t, conn)
}
func TestConnectWithValidateConnect(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
dialCount := 0
config.DialFunc = func(ctx context.Context, network, address string) (net.Conn, error) {
dialCount++
return net.Dial(network, address)
}
acceptConnCount := 0
config.ValidateConnect = func(ctx context.Context, conn *pgconn.PgConn) error {
acceptConnCount++
if acceptConnCount < 2 {
return errors.New("reject first conn")
}
return nil
}
// Append current primary config to fallbacks
config.Fallbacks = append(config.Fallbacks, &pgconn.FallbackConfig{
Host: config.Host,
Port: config.Port,
TLSConfig: config.TLSConfig,
})
// Repeat fallbacks
config.Fallbacks = append(config.Fallbacks, config.Fallbacks...)
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
closeConn(t, conn)
assert.True(t, dialCount > 1)
assert.True(t, acceptConnCount > 1)
}
func TestConnectWithValidateConnectTargetSessionAttrsReadWrite(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
config.ValidateConnect = pgconn.ValidateConnectTargetSessionAttrsReadWrite
config.RuntimeParams["default_transaction_read_only"] = "on"
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
conn, err := pgconn.ConnectConfig(ctx, config)
if !assert.NotNil(t, err) {
conn.Close(ctx)
}
}
func TestConnectWithAfterConnect(t *testing.T) {
t.Parallel()
config, err := pgconn.ParseConfig(os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
config.AfterConnect = func(ctx context.Context, conn *pgconn.PgConn) error {
_, err := conn.Exec(ctx, "set search_path to foobar;").ReadAll()
return err
}
conn, err := pgconn.ConnectConfig(context.Background(), config)
require.NoError(t, err)
results, err := conn.Exec(context.Background(), "show search_path;").ReadAll()
require.NoError(t, err)
defer closeConn(t, conn)
assert.Equal(t, []byte("foobar"), results[0].Rows[0][0])
}
func TestConnectConfigRequiresConfigFromParseConfig(t *testing.T) {
t.Parallel()
config := &pgconn.Config{}
require.PanicsWithValue(t, "config must be created by ParseConfig", func() { pgconn.ConnectConfig(context.Background(), config) })
}
func TestConnPrepareSyntaxError(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
psd, err := pgConn.Prepare(context.Background(), "ps1", "SYNTAX ERROR", nil)
require.Nil(t, psd)
require.NotNil(t, err)
ensureConnValid(t, pgConn)
}
func TestConnPrepareContextPrecanceled(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
ctx, cancel := context.WithCancel(context.Background())
cancel()
psd, err := pgConn.Prepare(ctx, "ps1", "select 1", nil)
assert.Nil(t, psd)
assert.Error(t, err)
assert.True(t, errors.Is(err, context.Canceled))
assert.True(t, pgconn.SafeToRetry(err))
ensureConnValid(t, pgConn)
}
func TestConnExec(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
results, err := pgConn.Exec(context.Background(), "select 'Hello, world'").ReadAll()
assert.NoError(t, err)
assert.Len(t, results, 1)
assert.Nil(t, results[0].Err)
assert.Equal(t, "SELECT 1", string(results[0].CommandTag))
assert.Len(t, results[0].Rows, 1)
assert.Equal(t, "Hello, world", string(results[0].Rows[0][0]))
ensureConnValid(t, pgConn)
}
func TestConnExecEmpty(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
multiResult := pgConn.Exec(context.Background(), ";")
resultCount := 0
for multiResult.NextResult() {
resultCount++
multiResult.ResultReader().Close()
}
assert.Equal(t, 0, resultCount)
err = multiResult.Close()
assert.NoError(t, err)
ensureConnValid(t, pgConn)
}
func TestConnExecMultipleQueries(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
results, err := pgConn.Exec(context.Background(), "select 'Hello, world'; select 1").ReadAll()
assert.NoError(t, err)
assert.Len(t, results, 2)
assert.Nil(t, results[0].Err)
assert.Equal(t, "SELECT 1", string(results[0].CommandTag))
assert.Len(t, results[0].Rows, 1)
assert.Equal(t, "Hello, world", string(results[0].Rows[0][0]))
assert.Nil(t, results[1].Err)
assert.Equal(t, "SELECT 1", string(results[1].CommandTag))
assert.Len(t, results[1].Rows, 1)
assert.Equal(t, "1", string(results[1].Rows[0][0]))
ensureConnValid(t, pgConn)
}
func TestConnExecMultipleQueriesEagerFieldDescriptions(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
mrr := pgConn.Exec(context.Background(), "select 'Hello, world' as msg; select 1 as num")
require.True(t, mrr.NextResult())
require.Len(t, mrr.ResultReader().FieldDescriptions(), 1)
assert.Equal(t, []byte("msg"), mrr.ResultReader().FieldDescriptions()[0].Name)
_, err = mrr.ResultReader().Close()
require.NoError(t, err)
require.True(t, mrr.NextResult())
require.Len(t, mrr.ResultReader().FieldDescriptions(), 1)
assert.Equal(t, []byte("num"), mrr.ResultReader().FieldDescriptions()[0].Name)
_, err = mrr.ResultReader().Close()
require.NoError(t, err)
require.False(t, mrr.NextResult())
require.NoError(t, mrr.Close())
ensureConnValid(t, pgConn)
}
func TestConnExecMultipleQueriesError(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
results, err := pgConn.Exec(context.Background(), "select 1; select 1/0; select 1").ReadAll()
require.NotNil(t, err)
if pgErr, ok := err.(*pgconn.PgError); ok {
assert.Equal(t, "22012", pgErr.Code)
} else {
t.Errorf("unexpected error: %v", err)
}
if pgConn.ParameterStatus("crdb_version") != "" {
// CockroachDB starts the second query result set and then sends the divide by zero error.
require.Len(t, results, 2)
assert.Len(t, results[0].Rows, 1)
assert.Equal(t, "1", string(results[0].Rows[0][0]))
assert.Len(t, results[1].Rows, 0)
} else {
// PostgreSQL sends the divide by zero and never sends the second query result set.
require.Len(t, results, 1)
assert.Len(t, results[0].Rows, 1)
assert.Equal(t, "1", string(results[0].Rows[0][0]))
}
ensureConnValid(t, pgConn)
}
func TestConnExecDeferredError(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
if pgConn.ParameterStatus("crdb_version") != "" {
t.Skip("Server does not support deferred constraint (https://github.com/cockroachdb/cockroach/issues/31632)")
}
setupSQL := `create temporary table t (
id text primary key,
n int not null,
unique (n) deferrable initially deferred
);
insert into t (id, n) values ('a', 1), ('b', 2), ('c', 3);`
_, err = pgConn.Exec(context.Background(), setupSQL).ReadAll()
assert.NoError(t, err)
_, err = pgConn.Exec(context.Background(), `update t set n=n+1 where id='b' returning *`).ReadAll()
require.NotNil(t, err)
var pgErr *pgconn.PgError
require.True(t, errors.As(err, &pgErr))
require.Equal(t, "23505", pgErr.Code)
ensureConnValid(t, pgConn)
}
func TestConnExecContextCanceled(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
multiResult := pgConn.Exec(ctx, "select 'Hello, world', pg_sleep(1)")
for multiResult.NextResult() {
}
err = multiResult.Close()
assert.True(t, pgconn.Timeout(err))
assert.ErrorIs(t, err, context.DeadlineExceeded)
assert.True(t, pgConn.IsClosed())
select {
case <-pgConn.CleanupDone():
case <-time.After(5 * time.Second):
t.Fatal("Connection cleanup exceeded maximum time")
}
}
func TestConnExecContextPrecanceled(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err = pgConn.Exec(ctx, "select 'Hello, world'").ReadAll()
assert.Error(t, err)
assert.True(t, errors.Is(err, context.Canceled))
assert.True(t, pgconn.SafeToRetry(err))
ensureConnValid(t, pgConn)
}
func TestConnExecParams(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
result := pgConn.ExecParams(context.Background(), "select $1::text as msg", [][]byte{[]byte("Hello, world")}, nil, nil, nil)
require.Len(t, result.FieldDescriptions(), 1)
assert.Equal(t, []byte("msg"), result.FieldDescriptions()[0].Name)
rowCount := 0
for result.NextRow() {
rowCount += 1
assert.Equal(t, "Hello, world", string(result.Values()[0]))
}
assert.Equal(t, 1, rowCount)
commandTag, err := result.Close()
assert.Equal(t, "SELECT 1", string(commandTag))
assert.NoError(t, err)
ensureConnValid(t, pgConn)
}
func TestConnExecParamsDeferredError(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
if pgConn.ParameterStatus("crdb_version") != "" {
t.Skip("Server does not support deferred constraint (https://github.com/cockroachdb/cockroach/issues/31632)")
}
setupSQL := `create temporary table t (
id text primary key,
n int not null,
unique (n) deferrable initially deferred
);
insert into t (id, n) values ('a', 1), ('b', 2), ('c', 3);`
_, err = pgConn.Exec(context.Background(), setupSQL).ReadAll()
assert.NoError(t, err)
result := pgConn.ExecParams(context.Background(), `update t set n=n+1 where id='b' returning *`, nil, nil, nil, nil).Read()
require.NotNil(t, result.Err)
var pgErr *pgconn.PgError
require.True(t, errors.As(result.Err, &pgErr))
require.Equal(t, "23505", pgErr.Code)
ensureConnValid(t, pgConn)
}
func TestConnExecParamsMaxNumberOfParams(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
paramCount := math.MaxUint16
params := make([]string, 0, paramCount)
args := make([][]byte, 0, paramCount)
for i := 0; i < paramCount; i++ {
params = append(params, fmt.Sprintf("($%d::text)", i+1))
args = append(args, []byte(strconv.Itoa(i)))
}
sql := "values" + strings.Join(params, ", ")
result := pgConn.ExecParams(context.Background(), sql, args, nil, nil, nil).Read()
require.NoError(t, result.Err)
require.Len(t, result.Rows, paramCount)
ensureConnValid(t, pgConn)
}
func TestConnExecParamsTooManyParams(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
paramCount := math.MaxUint16 + 1
params := make([]string, 0, paramCount)
args := make([][]byte, 0, paramCount)
for i := 0; i < paramCount; i++ {
params = append(params, fmt.Sprintf("($%d::text)", i+1))
args = append(args, []byte(strconv.Itoa(i)))
}
sql := "values" + strings.Join(params, ", ")
result := pgConn.ExecParams(context.Background(), sql, args, nil, nil, nil).Read()
require.Error(t, result.Err)
require.Equal(t, "extended protocol limited to 65535 parameters", result.Err.Error())
ensureConnValid(t, pgConn)
}
func TestConnExecParamsCanceled(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
result := pgConn.ExecParams(ctx, "select current_database(), pg_sleep(1)", nil, nil, nil, nil)
rowCount := 0
for result.NextRow() {
rowCount += 1
}
assert.Equal(t, 0, rowCount)
commandTag, err := result.Close()
assert.Equal(t, pgconn.CommandTag(nil), commandTag)
assert.True(t, pgconn.Timeout(err))
assert.ErrorIs(t, err, context.DeadlineExceeded)
assert.True(t, pgConn.IsClosed())
select {
case <-pgConn.CleanupDone():
case <-time.After(5 * time.Second):
t.Fatal("Connection cleanup exceeded maximum time")
}
}
func TestConnExecParamsPrecanceled(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
ctx, cancel := context.WithCancel(context.Background())
cancel()
result := pgConn.ExecParams(ctx, "select $1::text", [][]byte{[]byte("Hello, world")}, nil, nil, nil).Read()
require.Error(t, result.Err)
assert.True(t, errors.Is(result.Err, context.Canceled))
assert.True(t, pgconn.SafeToRetry(result.Err))
ensureConnValid(t, pgConn)
}
func TestConnExecParamsEmptySQL(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
pgConn, err := pgconn.Connect(ctx, os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
result := pgConn.ExecParams(ctx, "", nil, nil, nil, nil).Read()
assert.Nil(t, result.CommandTag)
assert.Len(t, result.Rows, 0)
assert.NoError(t, result.Err)
ensureConnValid(t, pgConn)
}
// https://github.com/jackc/pgx/issues/859
func TestResultReaderValuesHaveSameCapacityAsLength(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
result := pgConn.ExecParams(context.Background(), "select $1::text as msg", [][]byte{[]byte("Hello, world")}, nil, nil, nil)
require.Len(t, result.FieldDescriptions(), 1)
assert.Equal(t, []byte("msg"), result.FieldDescriptions()[0].Name)
rowCount := 0
for result.NextRow() {
rowCount += 1
assert.Equal(t, "Hello, world", string(result.Values()[0]))
assert.Equal(t, len(result.Values()[0]), cap(result.Values()[0]))
}
assert.Equal(t, 1, rowCount)
commandTag, err := result.Close()
assert.Equal(t, "SELECT 1", string(commandTag))
assert.NoError(t, err)
ensureConnValid(t, pgConn)
}
func TestConnExecPrepared(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
psd, err := pgConn.Prepare(context.Background(), "ps1", "select $1::text as msg", nil)
require.NoError(t, err)
require.NotNil(t, psd)
assert.Len(t, psd.ParamOIDs, 1)
assert.Len(t, psd.Fields, 1)
result := pgConn.ExecPrepared(context.Background(), "ps1", [][]byte{[]byte("Hello, world")}, nil, nil)
require.Len(t, result.FieldDescriptions(), 1)
assert.Equal(t, []byte("msg"), result.FieldDescriptions()[0].Name)
rowCount := 0
for result.NextRow() {
rowCount += 1
assert.Equal(t, "Hello, world", string(result.Values()[0]))
}
assert.Equal(t, 1, rowCount)
commandTag, err := result.Close()
assert.Equal(t, "SELECT 1", string(commandTag))
assert.NoError(t, err)
ensureConnValid(t, pgConn)
}
func TestConnExecPreparedMaxNumberOfParams(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
paramCount := math.MaxUint16
params := make([]string, 0, paramCount)
args := make([][]byte, 0, paramCount)
for i := 0; i < paramCount; i++ {
params = append(params, fmt.Sprintf("($%d::text)", i+1))
args = append(args, []byte(strconv.Itoa(i)))
}
sql := "values" + strings.Join(params, ", ")
psd, err := pgConn.Prepare(context.Background(), "ps1", sql, nil)
require.NoError(t, err)
require.NotNil(t, psd)
assert.Len(t, psd.ParamOIDs, paramCount)
assert.Len(t, psd.Fields, 1)
result := pgConn.ExecPrepared(context.Background(), "ps1", args, nil, nil).Read()
require.NoError(t, result.Err)
require.Len(t, result.Rows, paramCount)
ensureConnValid(t, pgConn)
}
func TestConnExecPreparedTooManyParams(t *testing.T) {
t.Parallel()
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("PGX_TEST_CONN_STRING"))
require.NoError(t, err)
defer closeConn(t, pgConn)
paramCount := math.MaxUint16 + 1
params := make([]string, 0, paramCount)
args := make([][]byte, 0, paramCount)
for i := 0; i < paramCount; i++ {
params = append(params, fmt.Sprintf("($%d::text)", i+1))
args = append(args, []byte(strconv.Itoa(i)))
}
sql := "values" + strings.Join(params, ", ")
psd, err := pgConn.Prepare(context.Background(), "ps1", sql, nil)
if pgConn.ParameterStatus("crdb_version") != "" {
// CockroachDB rejects preparing a statement with more than 65535 parameters.
require.EqualError(t, err, "ERROR: more than 65535 arguments to prepared statement: 65536 (SQLSTATE 08P01)")
} else {
// PostgreSQL accepts preparing a statement with more than 65535 parameters and only fails when executing it through the extended protocol.
require.NoError(t, err)
require.NotNil(t, psd)
assert.Len(t, psd.ParamOIDs, paramCount)
assert.Len(t, psd.Fields, 1)