Begin adding syncapi component tests (#2442)

* Add very basic syncapi tests

* Add a way to inject jetstream messages

* implement add_state_ids

* bugfixes

* Unbreak tests

* Remove now un-needed API call

* Linting

test/base.go

@@ -1,11 +1,83 @@
+// Copyright 2022 The Matrix.org Foundation C.I.C.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package test
 
 import (
+	"errors"
+	"fmt"
+	"io/fs"
+	"os"
+	"strings"
+	"testing"
+
 	"github.com/matrix-org/dendrite/setup/base"
 	"github.com/matrix-org/dendrite/setup/config"
 	"github.com/nats-io/nats.go"
 )
 
+func CreateBaseDendrite(t *testing.T, dbType DBType) (*base.BaseDendrite, func()) {
+	var cfg config.Dendrite
+	cfg.Defaults(false)
+	cfg.Global.JetStream.InMemory = true
+
+	switch dbType {
+	case DBTypePostgres:
+		cfg.Global.Defaults(true)   // autogen a signing key
+		cfg.MediaAPI.Defaults(true) // autogen a media path
+		// use a distinct prefix else concurrent postgres/sqlite runs will clash since NATS will use
+		// the file system event with InMemory=true :(
+		cfg.Global.JetStream.TopicPrefix = fmt.Sprintf("Test_%d_", dbType)
+		connStr, close := PrepareDBConnectionString(t, dbType)
+		cfg.Global.DatabaseOptions = config.DatabaseOptions{
+			ConnectionString:       config.DataSource(connStr),
+			MaxOpenConnections:     10,
+			MaxIdleConnections:     2,
+			ConnMaxLifetimeSeconds: 60,
+		}
+		return base.NewBaseDendrite(&cfg, "Test", base.DisableMetrics), close
+	case DBTypeSQLite:
+		cfg.Defaults(true) // sets a sqlite db per component
+		// use a distinct prefix else concurrent postgres/sqlite runs will clash since NATS will use
+		// the file system event with InMemory=true :(
+		cfg.Global.JetStream.TopicPrefix = fmt.Sprintf("Test_%d_", dbType)
+		return base.NewBaseDendrite(&cfg, "Test", base.DisableMetrics), func() {
+			// cleanup db files. This risks getting out of sync as we add more database strings :(
+			dbFiles := []config.DataSource{
+				cfg.AppServiceAPI.Database.ConnectionString,
+				cfg.FederationAPI.Database.ConnectionString,
+				cfg.KeyServer.Database.ConnectionString,
+				cfg.MSCs.Database.ConnectionString,
+				cfg.MediaAPI.Database.ConnectionString,
+				cfg.RoomServer.Database.ConnectionString,
+				cfg.SyncAPI.Database.ConnectionString,
+				cfg.UserAPI.AccountDatabase.ConnectionString,
+			}
+			for _, fileURI := range dbFiles {
+				path := strings.TrimPrefix(string(fileURI), "file:")
+				err := os.Remove(path)
+				if err != nil && !errors.Is(err, fs.ErrNotExist) {
+					t.Fatalf("failed to cleanup sqlite db '%s': %s", fileURI, err)
+				}
+			}
+		}
+	default:
+		t.Fatalf("unknown db type: %v", dbType)
+	}
+	return nil, nil
+}
+
 func Base(cfg *config.Dendrite) (*base.BaseDendrite, nats.JetStreamContext, *nats.Conn) {
 	if cfg == nil {
 		cfg = &config.Dendrite{}