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315 lines (249 loc) · 6.89 KB
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package pgx_test
import (
"github.com/jackc/pgx"
"testing"
"time"
)
func TestTransactionSuccessfulCommit(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
createSql := `
create temporary table foo(
id integer,
unique (id) initially deferred
);
`
if _, err := conn.Exec(createSql); err != nil {
t.Fatalf("Failed to create table: %v", err)
}
tx, err := conn.Begin()
if err != nil {
t.Fatalf("conn.Begin failed: %v", err)
}
_, err = tx.Exec("insert into foo(id) values (1)")
if err != nil {
t.Fatalf("tx.Exec failed: %v", err)
}
err = tx.Commit()
if err != nil {
t.Fatalf("tx.Commit failed: %v", err)
}
var n int64
err = conn.QueryRow("select count(*) from foo").Scan(&n)
if err != nil {
t.Fatalf("QueryRow Scan failed: %v", err)
}
if n != 1 {
t.Fatalf("Did not receive correct number of rows: %v", n)
}
}
func TestTxCommitWhenTxBroken(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
createSql := `
create temporary table foo(
id integer,
unique (id) initially deferred
);
`
if _, err := conn.Exec(createSql); err != nil {
t.Fatalf("Failed to create table: %v", err)
}
tx, err := conn.Begin()
if err != nil {
t.Fatalf("conn.Begin failed: %v", err)
}
if _, err := tx.Exec("insert into foo(id) values (1)"); err != nil {
t.Fatalf("tx.Exec failed: %v", err)
}
// Purposely break transaction
if _, err := tx.Exec("syntax error"); err == nil {
t.Fatal("Unexpected success")
}
err = tx.Commit()
if err != pgx.ErrTxCommitRollback {
t.Fatalf("Expected error %v, got %v", pgx.ErrTxCommitRollback, err)
}
var n int64
err = conn.QueryRow("select count(*) from foo").Scan(&n)
if err != nil {
t.Fatalf("QueryRow Scan failed: %v", err)
}
if n != 0 {
t.Fatalf("Did not receive correct number of rows: %v", n)
}
}
func TestTxCommitSerializationFailure(t *testing.T) {
t.Parallel()
pool := createConnPool(t, 5)
defer pool.Close()
pool.Exec(`drop table if exists tx_serializable_sums`)
_, err := pool.Exec(`create table tx_serializable_sums(num integer);`)
if err != nil {
t.Fatalf("Unable to create temporary table: %v", err)
}
defer pool.Exec(`drop table tx_serializable_sums`)
tx1, err := pool.BeginEx(&pgx.TxOptions{IsoLevel: pgx.Serializable})
if err != nil {
t.Fatalf("BeginEx failed: %v", err)
}
defer tx1.Rollback()
tx2, err := pool.BeginEx(&pgx.TxOptions{IsoLevel: pgx.Serializable})
if err != nil {
t.Fatalf("BeginEx failed: %v", err)
}
defer tx2.Rollback()
_, err = tx1.Exec(`insert into tx_serializable_sums(num) select sum(num) from tx_serializable_sums`)
if err != nil {
t.Fatalf("Exec failed: %v", err)
}
_, err = tx2.Exec(`insert into tx_serializable_sums(num) select sum(num) from tx_serializable_sums`)
if err != nil {
t.Fatalf("Exec failed: %v", err)
}
err = tx1.Commit()
if err != nil {
t.Fatalf("Commit failed: %v", err)
}
err = tx2.Commit()
if pgErr, ok := err.(pgx.PgError); !ok || pgErr.Code != "40001" {
t.Fatalf("Expected serialization error 40001, got %#v", err)
}
}
func TestTransactionSuccessfulRollback(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
createSql := `
create temporary table foo(
id integer,
unique (id) initially deferred
);
`
if _, err := conn.Exec(createSql); err != nil {
t.Fatalf("Failed to create table: %v", err)
}
tx, err := conn.Begin()
if err != nil {
t.Fatalf("conn.Begin failed: %v", err)
}
_, err = tx.Exec("insert into foo(id) values (1)")
if err != nil {
t.Fatalf("tx.Exec failed: %v", err)
}
err = tx.Rollback()
if err != nil {
t.Fatalf("tx.Rollback failed: %v", err)
}
var n int64
err = conn.QueryRow("select count(*) from foo").Scan(&n)
if err != nil {
t.Fatalf("QueryRow Scan failed: %v", err)
}
if n != 0 {
t.Fatalf("Did not receive correct number of rows: %v", n)
}
}
func TestBeginExIsoLevels(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
isoLevels := []pgx.TxIsoLevel{pgx.Serializable, pgx.RepeatableRead, pgx.ReadCommitted, pgx.ReadUncommitted}
for _, iso := range isoLevels {
tx, err := conn.BeginEx(&pgx.TxOptions{IsoLevel: iso})
if err != nil {
t.Fatalf("conn.BeginEx failed: %v", err)
}
var level pgx.TxIsoLevel
conn.QueryRow("select current_setting('transaction_isolation')").Scan(&level)
if level != iso {
t.Errorf("Expected to be in isolation level %v but was %v", iso, level)
}
err = tx.Rollback()
if err != nil {
t.Fatalf("tx.Rollback failed: %v", err)
}
}
}
func TestBeginExReadOnly(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
tx, err := conn.BeginEx(&pgx.TxOptions{AccessMode: pgx.ReadOnly})
if err != nil {
t.Fatalf("conn.BeginEx failed: %v", err)
}
defer tx.Rollback()
_, err = conn.Exec("create table foo(id serial primary key)")
if pgErr, ok := err.(pgx.PgError); !ok || pgErr.Code != "25006" {
t.Errorf("Expected error SQLSTATE 25006, but got %#v", err)
}
}
func TestTxAfterClose(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
tx, err := conn.Begin()
if err != nil {
t.Fatal(err)
}
var zeroTime, t1, t2 time.Time
tx.AfterClose(func(tx *pgx.Tx) {
t1 = time.Now()
})
tx.AfterClose(func(tx *pgx.Tx) {
t2 = time.Now()
})
tx.Rollback()
if t1 == zeroTime {
t.Error("First Tx.AfterClose callback not called")
}
if t2 == zeroTime {
t.Error("Second Tx.AfterClose callback not called")
}
if t1.Before(t2) {
t.Errorf("AfterClose callbacks called out of order: %v, %v", t1, t2)
}
}
func TestTxStatus(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
tx, err := conn.Begin()
if err != nil {
t.Fatal(err)
}
if status := tx.Status(); status != pgx.TxStatusInProgress {
t.Fatalf("Expected status to be %v, but it was %v", pgx.TxStatusInProgress, status)
}
if err := tx.Rollback(); err != nil {
t.Fatal(err)
}
if status := tx.Status(); status != pgx.TxStatusRollbackSuccess {
t.Fatalf("Expected status to be %v, but it was %v", pgx.TxStatusRollbackSuccess, status)
}
}
func TestTxErr(t *testing.T) {
t.Parallel()
conn := mustConnect(t, *defaultConnConfig)
defer closeConn(t, conn)
tx, err := conn.Begin()
if err != nil {
t.Fatal(err)
}
// Purposely break transaction
if _, err := tx.Exec("syntax error"); err == nil {
t.Fatal("Unexpected success")
}
if err := tx.Commit(); err != pgx.ErrTxCommitRollback {
t.Fatalf("Expected error %v, got %v", pgx.ErrTxCommitRollback, err)
}
if status := tx.Status(); status != pgx.TxStatusCommitFailure {
t.Fatalf("Expected status to be %v, but it was %v", pgx.TxStatusRollbackSuccess, status)
}
if err := tx.Err(); err != pgx.ErrTxCommitRollback {
t.Fatalf("Expected error %v, got %v", pgx.ErrTxCommitRollback, err)
}
}