feat(05-03): add user-plugin organisations table (structure only)

- create_organisations folds PHP v3.2.0; no users-table ALTER this phase
- Organisation model is an FK target; app.key placeholder in config

updates/postgres_test.go

@@ -0,0 +1,139 @@
+package updates
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"net/url"
+	"os"
+	"strings"
+	"testing"
+	"time"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+	"github.com/testcontainers/testcontainers-go"
+	"github.com/testcontainers/testcontainers-go/modules/postgres"
+)
+
+var (
+	userPG    *postgres.PostgresContainer
+	userSQL   *sql.DB
+	userDSN   string
+	userPGErr error
+)
+
+func TestMain(m *testing.M) {
+	code := 1
+	if !testShort() {
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
+		userPGErr = startUserPostgres(ctx)
+		cancel()
+		if userPGErr != nil {
+			fmt.Fprintf(os.Stderr, "golem15.user: testcontainers postgres: %v\n", userPGErr)
+			stopUserPostgres()
+			os.Exit(1)
+		}
+	}
+	code = m.Run()
+	stopUserPostgres()
+	os.Exit(code)
+}
+
+func testShort() bool {
+	for _, a := range os.Args {
+		if a == "-test.short" {
+			return true
+		}
+	}
+	return false
+}
+
+func startUserPostgres(ctx context.Context) error {
+	ctr, err := postgres.Run(ctx,
+		"postgres:16-alpine",
+		postgres.WithDatabase("golem15_user"),
+		postgres.WithUsername("golem15_user"),
+		postgres.WithPassword("golem15_user"),
+		postgres.BasicWaitStrategies(),
+		testcontainers.WithEnv(map[string]string{
+			"POSTGRES_INITDB_ARGS": "--locale-provider=icu --icu-locale=pl-PL --encoding=UTF8",
+		}),
+	)
+	if err != nil {
+		return err
+	}
+	userPG = ctr
+	dsn, err := ctr.ConnectionString(ctx, "sslmode=disable")
+	if err != nil {
+		return err
+	}
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		return err
+	}
+	if err := db.PingContext(ctx); err != nil {
+		_ = db.Close()
+		return err
+	}
+	userSQL = db
+	userDSN = dsn
+	return nil
+}
+
+func stopUserPostgres() {
+	if userSQL != nil {
+		_ = userSQL.Close()
+	}
+	if userPG != nil {
+		_ = testcontainers.TerminateContainer(userPG)
+	}
+}
+
+func userAdminDB(t *testing.T) *sql.DB {
+	t.Helper()
+	if testing.Short() {
+		t.Skip("requires testcontainers postgres")
+	}
+	if userPGErr != nil {
+		t.Fatalf("postgres unavailable: %v", userPGErr)
+	}
+	if userSQL == nil {
+		t.Fatal("postgres unavailable: container was not started")
+	}
+	return userSQL
+}
+
+func dedicatedDB(t *testing.T, name string) *sql.DB {
+	t.Helper()
+	admin := userAdminDB(t)
+	ctx := t.Context()
+	quoted := `"` + strings.ReplaceAll(name, `"`, `""`) + `"`
+	if _, err := admin.ExecContext(ctx, `CREATE DATABASE `+quoted+` TEMPLATE template0 ENCODING 'UTF8' LOCALE_PROVIDER icu ICU_LOCALE 'pl-PL'`); err != nil && !strings.Contains(err.Error(), "already exists") {
+		t.Fatalf("create %s: %v", name, err)
+	}
+	dsn, err := dsnWithDB(userDSN, name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	db, err := sql.Open("pgx", dsn)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		_ = db.Close()
+		_, _ = admin.ExecContext(context.Background(), `DROP DATABASE IF EXISTS `+quoted+` WITH (FORCE)`)
+	})
+	if err := db.PingContext(ctx); err != nil {
+		t.Fatal(err)
+	}
+	return db
+}
+
+func dsnWithDB(dsn, name string) (string, error) {
+	u, err := url.Parse(dsn)
+	if err != nil {
+		return "", err
+	}
+	u.Path = "/" + name
+	return u.String(), nil
+}