update go-sqlite3 to v0.18.0 (#3204)

vendor/github.com/ncruces/go-sqlite3/vfs/memdb/api.go

@@ -10,7 +10,10 @@
 package memdb
 
 import (
+	"fmt"
+	"net/url"
 	"sync"
+	"testing"
 
 	"github.com/ncruces/go-sqlite3/vfs"
 )
@@ -39,8 +42,9 @@ func Create(name string, data []byte) {
 		size: int64(len(data)),
 	}
 
-	// Convert data from WAL to rollback journal.
-	if len(data) >= 20 && data[18] == 2 && data[19] == 2 {
+	// Convert data from WAL/2 to rollback journal.
+	if len(data) >= 20 && (data[18] == 2 && data[19] == 2 ||
+		data[18] == 3 && data[19] == 3) {
 		data[18] = 1
 		data[19] = 1
 	}
@@ -66,3 +70,30 @@ func Delete(name string) {
 	defer memoryMtx.Unlock()
 	delete(memoryDBs, name)
 }
+
+// TestDB creates an empty shared memory database for the test to use.
+// The database is automatically deleted when the test and all its subtests complete.
+// Each subsequent call to TestDB returns a unique database.
+func TestDB(tb testing.TB, params ...url.Values) string {
+	tb.Helper()
+
+	name := fmt.Sprintf("%s_%p", tb.Name(), tb)
+	tb.Cleanup(func() { Delete(name) })
+	Create(name, nil)
+
+	p := url.Values{"vfs": {"memdb"}}
+	for _, v := range params {
+		for k, v := range v {
+			for _, v := range v {
+				p.Add(k, v)
+			}
+		}
+	}
+
+	return (&url.URL{
+		Scheme:   "file",
+		OmitHost: true,
+		Path:     "/" + name,
+		RawQuery: p.Encode(),
+	}).String()
+}