Open SQLite with WAL and bound delivery re-dispatch by ownership (closes #256)

internal/delivery/engine_integration_test.go

@@ -2,7 +2,6 @@ package delivery_test
 
 import (
 	"context"
-	"database/sql"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -70,11 +69,12 @@ func iMainDB(t *testing.T) *gorm.DB {
 		t.TempDir(), "main-test.db",
 	)
 
-	dsn := fmt.Sprintf(
-		"file:%s?cache=shared&mode=rwc", dbPath,
+	// Opened the way the service opens the main database, so these
+	// tests cannot pass against journal and locking settings
+	// production does not use.
+	sqlDB, err := database.OpenSQLite(
+		dbPath, database.SQLiteModeCreate,
 	)
-
-	sqlDB, err := sql.Open("sqlite", dsn)
 	require.NoError(t, err)
 
 	t.Cleanup(func() { _ = sqlDB.Close() })