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pgx_test.go
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pgx_test.go
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package pgx
// error codes https://github.com/jackc/pgerrcode/blob/master/errcode.go
import (
"context"
"database/sql"
sqldriver "database/sql/driver"
"errors"
"fmt"
"log"
"io"
"strconv"
"strings"
"sync"
"testing"
"github.com/golang-migrate/migrate/v4"
"github.com/dhui/dktest"
"github.com/golang-migrate/migrate/v4/database"
dt "github.com/golang-migrate/migrate/v4/database/testing"
"github.com/golang-migrate/migrate/v4/dktesting"
_ "github.com/golang-migrate/migrate/v4/source/file"
)
const (
pgPassword = "postgres"
)
var (
opts = dktest.Options{
Env: map[string]string{"POSTGRES_PASSWORD": pgPassword},
PortRequired: true, ReadyFunc: isReady}
// Supported versions: https://www.postgresql.org/support/versioning/
specs = []dktesting.ContainerSpec{
{ImageName: "postgres:9.5", Options: opts},
{ImageName: "postgres:9.6", Options: opts},
{ImageName: "postgres:10", Options: opts},
{ImageName: "postgres:11", Options: opts},
{ImageName: "postgres:12", Options: opts},
}
)
func pgConnectionString(host, port string, options ...string) string {
options = append(options, "sslmode=disable")
return fmt.Sprintf("postgres://postgres:%s@%s:%s/postgres?%s", pgPassword, host, port, strings.Join(options, "&"))
}
func isReady(ctx context.Context, c dktest.ContainerInfo) bool {
ip, port, err := c.FirstPort()
if err != nil {
return false
}
db, err := sql.Open("pgx", pgConnectionString(ip, port))
if err != nil {
return false
}
defer func() {
if err := db.Close(); err != nil {
log.Println("close error:", err)
}
}()
if err = db.PingContext(ctx); err != nil {
switch err {
case sqldriver.ErrBadConn, io.EOF:
return false
default:
log.Println(err)
}
return false
}
return true
}
func mustRun(t *testing.T, d database.Driver, statements []string) {
for _, statement := range statements {
if err := d.Run(strings.NewReader(statement)); err != nil {
t.Fatal(err)
}
}
}
func Test(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
dt.Test(t, d, []byte("SELECT 1"))
})
}
func TestMigrate(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
m, err := migrate.NewWithDatabaseInstance("file://./examples/migrations", "pgx", d)
if err != nil {
t.Fatal(err)
}
dt.TestMigrate(t, m)
})
}
func TestMultipleStatements(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
if err := d.Run(strings.NewReader("CREATE TABLE foo (foo text); CREATE TABLE bar (bar text);")); err != nil {
t.Fatalf("expected err to be nil, got %v", err)
}
// make sure second table exists
var exists bool
if err := d.(*Postgres).conn.QueryRowContext(context.Background(), "SELECT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'bar' AND table_schema = (SELECT current_schema()))").Scan(&exists); err != nil {
t.Fatal(err)
}
if !exists {
t.Fatalf("expected table bar to exist")
}
})
}
func TestMultipleStatementsInMultiStatementMode(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port, "x-multi-statement=true")
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
if err := d.Run(strings.NewReader("CREATE TABLE foo (foo text); CREATE INDEX CONCURRENTLY idx_foo ON foo (foo);")); err != nil {
t.Fatalf("expected err to be nil, got %v", err)
}
// make sure created index exists
var exists bool
if err := d.(*Postgres).conn.QueryRowContext(context.Background(), "SELECT EXISTS (SELECT 1 FROM pg_indexes WHERE schemaname = (SELECT current_schema()) AND indexname = 'idx_foo')").Scan(&exists); err != nil {
t.Fatal(err)
}
if !exists {
t.Fatalf("expected table bar to exist")
}
})
}
func TestErrorParsing(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
wantErr := `migration failed: syntax error at or near "TABLEE" (column 37) in line 1: CREATE TABLE foo ` +
`(foo text); CREATE TABLEE bar (bar text); (details: ERROR: syntax error at or near "TABLEE" (SQLSTATE 42601))`
if err := d.Run(strings.NewReader("CREATE TABLE foo (foo text); CREATE TABLEE bar (bar text);")); err == nil {
t.Fatal("expected err but got nil")
} else if err.Error() != wantErr {
t.Fatalf("expected '%s' but got '%s'", wantErr, err.Error())
}
})
}
func TestFilterCustomQuery(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port, "x-custom=foobar")
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
})
}
func TestWithSchema(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Fatal(err)
}
}()
// create foobar schema
if err := d.Run(strings.NewReader("CREATE SCHEMA foobar AUTHORIZATION postgres")); err != nil {
t.Fatal(err)
}
if err := d.SetVersion(1, false); err != nil {
t.Fatal(err)
}
// re-connect using that schema
d2, err := p.Open(pgConnectionString(ip, port, "search_path=foobar"))
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d2.Close(); err != nil {
t.Fatal(err)
}
}()
version, _, err := d2.Version()
if err != nil {
t.Fatal(err)
}
if version != database.NilVersion {
t.Fatal("expected NilVersion")
}
// now update version and compare
if err := d2.SetVersion(2, false); err != nil {
t.Fatal(err)
}
version, _, err = d2.Version()
if err != nil {
t.Fatal(err)
}
if version != 2 {
t.Fatal("expected version 2")
}
// meanwhile, the public schema still has the other version
version, _, err = d.Version()
if err != nil {
t.Fatal(err)
}
if version != 1 {
t.Fatal("expected version 2")
}
})
}
func TestMigrationTableOption(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, _ := p.Open(addr)
defer func() {
if err := d.Close(); err != nil {
t.Fatal(err)
}
}()
// create migrate schema
if err := d.Run(strings.NewReader("CREATE SCHEMA migrate AUTHORIZATION postgres")); err != nil {
t.Fatal(err)
}
// bad unquoted x-migrations-table parameter
wantErr := "x-migrations-table must be quoted (for instance '\"migrate\".\"schema_migrations\"') when x-migrations-table-quoted is enabled, current value is: migrate.schema_migrations"
d, err = p.Open(fmt.Sprintf("postgres://postgres:%s@%v:%v/postgres?sslmode=disable&x-migrations-table=migrate.schema_migrations&x-migrations-table-quoted=1",
pgPassword, ip, port))
if (err != nil) && (err.Error() != wantErr) {
t.Fatalf("expected '%s' but got '%s'", wantErr, err.Error())
}
// too many quoted x-migrations-table parameters
wantErr = "\"\"migrate\".\"schema_migrations\".\"toomany\"\" MigrationsTable contains too many dot characters"
d, err = p.Open(fmt.Sprintf("postgres://postgres:%s@%v:%v/postgres?sslmode=disable&x-migrations-table=\"migrate\".\"schema_migrations\".\"toomany\"&x-migrations-table-quoted=1",
pgPassword, ip, port))
if (err != nil) && (err.Error() != wantErr) {
t.Fatalf("expected '%s' but got '%s'", wantErr, err.Error())
}
// good quoted x-migrations-table parameter
d, err = p.Open(fmt.Sprintf("postgres://postgres:%s@%v:%v/postgres?sslmode=disable&x-migrations-table=\"migrate\".\"schema_migrations\"&x-migrations-table-quoted=1",
pgPassword, ip, port))
if err != nil {
t.Fatal(err)
}
// make sure migrate.schema_migrations table exists
var exists bool
if err := d.(*Postgres).conn.QueryRowContext(context.Background(), "SELECT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'schema_migrations' AND table_schema = 'migrate')").Scan(&exists); err != nil {
t.Fatal(err)
}
if !exists {
t.Fatalf("expected table migrate.schema_migrations to exist")
}
d, err = p.Open(fmt.Sprintf("postgres://postgres:%s@%v:%v/postgres?sslmode=disable&x-migrations-table=migrate.schema_migrations",
pgPassword, ip, port))
if err != nil {
t.Fatal(err)
}
if err := d.(*Postgres).conn.QueryRowContext(context.Background(), "SELECT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'migrate.schema_migrations' AND table_schema = (SELECT current_schema()))").Scan(&exists); err != nil {
t.Fatal(err)
}
if !exists {
t.Fatalf("expected table 'migrate.schema_migrations' to exist")
}
})
}
func TestFailToCreateTableWithoutPermissions(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
// Check that opening the postgres connection returns NilVersion
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
// create user who is not the owner. Although we're concatenating strings in an sql statement it should be fine
// since this is a test environment and we're not expecting to the pgPassword to be malicious
mustRun(t, d, []string{
"CREATE USER not_owner WITH ENCRYPTED PASSWORD '" + pgPassword + "'",
"CREATE SCHEMA barfoo AUTHORIZATION postgres",
"GRANT USAGE ON SCHEMA barfoo TO not_owner",
"REVOKE CREATE ON SCHEMA barfoo FROM PUBLIC",
"REVOKE CREATE ON SCHEMA barfoo FROM not_owner",
})
// re-connect using that schema
d2, err := p.Open(fmt.Sprintf("postgres://not_owner:%s@%v:%v/postgres?sslmode=disable&search_path=barfoo",
pgPassword, ip, port))
defer func() {
if d2 == nil {
return
}
if err := d2.Close(); err != nil {
t.Fatal(err)
}
}()
var e *database.Error
if !errors.As(err, &e) || err == nil {
t.Fatal("Unexpected error, want permission denied error. Got: ", err)
}
if !strings.Contains(e.OrigErr.Error(), "permission denied for schema barfoo") {
t.Fatal(e)
}
// re-connect using that x-migrations-table and x-migrations-table-quoted
d2, err = p.Open(fmt.Sprintf("postgres://not_owner:%s@%v:%v/postgres?sslmode=disable&x-migrations-table=\"barfoo\".\"schema_migrations\"&x-migrations-table-quoted=1",
pgPassword, ip, port))
if !errors.As(err, &e) || err == nil {
t.Fatal("Unexpected error, want permission denied error. Got: ", err)
}
if !strings.Contains(e.OrigErr.Error(), "permission denied for schema barfoo") {
t.Fatal(e)
}
})
}
func TestCheckBeforeCreateTable(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
// Check that opening the postgres connection returns NilVersion
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
// create user who is not the owner. Although we're concatenating strings in an sql statement it should be fine
// since this is a test environment and we're not expecting to the pgPassword to be malicious
mustRun(t, d, []string{
"CREATE USER not_owner WITH ENCRYPTED PASSWORD '" + pgPassword + "'",
"CREATE SCHEMA barfoo AUTHORIZATION postgres",
"GRANT USAGE ON SCHEMA barfoo TO not_owner",
"GRANT CREATE ON SCHEMA barfoo TO not_owner",
})
// re-connect using that schema
d2, err := p.Open(fmt.Sprintf("postgres://not_owner:%s@%v:%v/postgres?sslmode=disable&search_path=barfoo",
pgPassword, ip, port))
if err != nil {
t.Fatal(err)
}
if err := d2.Close(); err != nil {
t.Fatal(err)
}
// revoke privileges
mustRun(t, d, []string{
"REVOKE CREATE ON SCHEMA barfoo FROM PUBLIC",
"REVOKE CREATE ON SCHEMA barfoo FROM not_owner",
})
// re-connect using that schema
d3, err := p.Open(fmt.Sprintf("postgres://not_owner:%s@%v:%v/postgres?sslmode=disable&search_path=barfoo",
pgPassword, ip, port))
if err != nil {
t.Fatal(err)
}
version, _, err := d3.Version()
if err != nil {
t.Fatal(err)
}
if version != database.NilVersion {
t.Fatal("Unexpected version, want database.NilVersion. Got: ", version)
}
defer func() {
if err := d3.Close(); err != nil {
t.Fatal(err)
}
}()
})
}
func TestParallelSchema(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
defer func() {
if err := d.Close(); err != nil {
t.Error(err)
}
}()
// create foo and bar schemas
if err := d.Run(strings.NewReader("CREATE SCHEMA foo AUTHORIZATION postgres")); err != nil {
t.Fatal(err)
}
if err := d.Run(strings.NewReader("CREATE SCHEMA bar AUTHORIZATION postgres")); err != nil {
t.Fatal(err)
}
// re-connect using that schemas
dfoo, err := p.Open(pgConnectionString(ip, port, "search_path=foo"))
if err != nil {
t.Fatal(err)
}
defer func() {
if err := dfoo.Close(); err != nil {
t.Error(err)
}
}()
dbar, err := p.Open(pgConnectionString(ip, port, "search_path=bar"))
if err != nil {
t.Fatal(err)
}
defer func() {
if err := dbar.Close(); err != nil {
t.Error(err)
}
}()
if err := dfoo.Lock(); err != nil {
t.Fatal(err)
}
if err := dbar.Lock(); err != nil {
t.Fatal(err)
}
if err := dbar.Unlock(); err != nil {
t.Fatal(err)
}
if err := dfoo.Unlock(); err != nil {
t.Fatal(err)
}
})
}
func TestPostgres_Lock(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
addr := pgConnectionString(ip, port)
p := &Postgres{}
d, err := p.Open(addr)
if err != nil {
t.Fatal(err)
}
dt.Test(t, d, []byte("SELECT 1"))
ps := d.(*Postgres)
err = ps.Lock()
if err != nil {
t.Fatal(err)
}
err = ps.Unlock()
if err != nil {
t.Fatal(err)
}
err = ps.Lock()
if err != nil {
t.Fatal(err)
}
err = ps.Unlock()
if err != nil {
t.Fatal(err)
}
})
}
func TestWithInstance_Concurrent(t *testing.T) {
dktesting.ParallelTest(t, specs, func(t *testing.T, c dktest.ContainerInfo) {
ip, port, err := c.FirstPort()
if err != nil {
t.Fatal(err)
}
// The number of concurrent processes running WithInstance
const concurrency = 30
// We can instantiate a single database handle because it is
// actually a connection pool, and so, each of the below go
// routines will have a high probability of using a separate
// connection, which is something we want to exercise.
db, err := sql.Open("pgx", pgConnectionString(ip, port))
if err != nil {
t.Fatal(err)
}
defer func() {
if err := db.Close(); err != nil {
t.Error(err)
}
}()
db.SetMaxIdleConns(concurrency)
db.SetMaxOpenConns(concurrency)
var wg sync.WaitGroup
defer wg.Wait()
wg.Add(concurrency)
for i := 0; i < concurrency; i++ {
go func(i int) {
defer wg.Done()
_, err := WithInstance(db, &Config{})
if err != nil {
t.Errorf("process %d error: %s", i, err)
}
}(i)
}
})
}
func Test_computeLineFromPos(t *testing.T) {
testcases := []struct {
pos int
wantLine uint
wantCol uint
input string
wantOk bool
}{
{
15, 2, 6, "SELECT *\nFROM foo", true, // foo table does not exists
},
{
16, 3, 6, "SELECT *\n\nFROM foo", true, // foo table does not exists, empty line
},
{
25, 3, 7, "SELECT *\nFROM foo\nWHERE x", true, // x column error
},
{
27, 5, 7, "SELECT *\n\nFROM foo\n\nWHERE x", true, // x column error, empty lines
},
{
10, 2, 1, "SELECT *\nFROMM foo", true, // FROMM typo
},
{
11, 3, 1, "SELECT *\n\nFROMM foo", true, // FROMM typo, empty line
},
{
17, 2, 8, "SELECT *\nFROM foo", true, // last character
},
{
18, 0, 0, "SELECT *\nFROM foo", false, // invalid position
},
}
for i, tc := range testcases {
t.Run("tc"+strconv.Itoa(i), func(t *testing.T) {
run := func(crlf bool, nonASCII bool) {
var name string
if crlf {
name = "crlf"
} else {
name = "lf"
}
if nonASCII {
name += "-nonascii"
} else {
name += "-ascii"
}
t.Run(name, func(t *testing.T) {
input := tc.input
if crlf {
input = strings.Replace(input, "\n", "\r\n", -1)
}
if nonASCII {
input = strings.Replace(input, "FROM", "FRÖM", -1)
}
gotLine, gotCol, gotOK := computeLineFromPos(input, tc.pos)
if tc.wantOk {
t.Logf("pos %d, want %d:%d, %#v", tc.pos, tc.wantLine, tc.wantCol, input)
}
if gotOK != tc.wantOk {
t.Fatalf("expected ok %v but got %v", tc.wantOk, gotOK)
}
if gotLine != tc.wantLine {
t.Fatalf("expected line %d but got %d", tc.wantLine, gotLine)
}
if gotCol != tc.wantCol {
t.Fatalf("expected col %d but got %d", tc.wantCol, gotCol)
}
})
}
run(false, false)
run(true, false)
run(false, true)
run(true, true)
})
}
}