Add tests for MSC2716 and backfilling history

Work on MSC2716: matrix-org/matrix-spec-proposals#2716

Author: MadLittleMods

README.md

@@ -1,7 +1,19 @@
+[![Complement Dev](https://img.shields.io/matrix/complement:matrix.org.svg?label=%23complement%3Amatrix.org&logo=matrix&server_fqdn=matrix.org)](https://matrix.to/#/#complement:matrix.org)
+
 ### Complement
 
 Complement is a black box integration testing framework for Matrix homeservers.
 
+
+## adsf
+
+To get started developing, see https://github.com/matrix-org/complement/blob/master/ONBOARDING.md
+
+If you're looking to run Complement against a local dev instance of Synapse, see [`matrix-org/synapse` -> `scripts-dev/complement.sh`](https://github.com/matrix-org/synapse/blob/develop/scripts-dev/complement.sh)
+
+If you want to develop Complement tests while working on a local dev instance of Synapse, edit `scripts-dev/complement.sh` to point to your local Complement checkout.
+
+
 #### Running
 
 You need to have Go and Docker installed. Then:

internal/b/blueprints.go

@@ -69,10 +69,11 @@ type Room struct {
 }
 
 type Event struct {
-	Type     string
-	Sender   string
-	StateKey *string
-	Content  map[string]interface{}
+	Type       string
+	Sender     string
+	StateKey   *string
+	PrevEvents []string
+	Content    map[string]interface{}
 	// This field is ignored in blueprints as clients are unable to set it. Used with federation.Server
 	Unsigned map[string]interface{}
 }

tests/msc2716_test.go

@@ -0,0 +1,78 @@
+// +build msc2716
+
+// This file contains tests for incrementally importing history to an existing room,
+// a currently experimental feature defined by MSC2716, which you can read here:
+// https://github.com/matrix-org/matrix-doc/pull/2716
+
+package tests
+
+import (
+	"testing"
+
+	"github.com/matrix-org/complement/internal/b"
+	"github.com/matrix-org/complement/internal/must"
+	"github.com/tidwall/gjson"
+)
+
+// Test that the m.room.create and m.room.member events for a room we created comes down /sync
+func TestBackfillingHistory(t *testing.T) {
+	deployment := Deploy(t, "rooms_state", b.BlueprintAlice)
+	defer deployment.Destroy(t)
+
+	userID := "@alice:hs1"
+	alice := deployment.Client(t, "hs1", userID)
+	roomID := alice.CreateRoom(t, struct{}{})
+
+	// eventA
+	eventA := alice.SendEventSynced(t, roomID, b.Event{
+		Type: "m.room.message",
+		Content: map[string]interface{}{
+			"msgtype": "m.text",
+			"body":    "Message A",
+		},
+	})
+	// eventB
+	alice.SendEventSynced(t, roomID, b.Event{
+		Type: "m.room.message",
+		Content: map[string]interface{}{
+			"msgtype": "m.text",
+			"body":    "Message B",
+		},
+	})
+	// eventC
+	alice.SendEventSynced(t, roomID, b.Event{
+		Type: "m.room.message",
+		Content: map[string]interface{}{
+			"msgtype": "m.text",
+			"body":    "Message C",
+		},
+	})
+
+	// event1
+	alice.SendEventSynced(t, roomID, b.Event{
+		Type: "m.room.message",
+		PrevEvents: []string{
+			eventA,
+		},
+		Content: map[string]interface{}{
+			"msgtype": "m.text",
+			"body":    "Message 1",
+		},
+	})
+
+	t.Run("parallel", func(t *testing.T) {
+		// sytest: Room creation reports m.room.create to myself
+		t.Run("Room creation reports m.room.create to myself", func(t *testing.T) {
+			t.Parallel()
+			alice := deployment.Client(t, "hs1", userID)
+			alice.SyncUntilTimelineHas(t, roomID, func(ev gjson.Result) bool {
+				if ev.Get("type").Str != "m.room.create" {
+					return false
+				}
+				must.EqualStr(t, ev.Get("sender").Str, userID, "wrong sender")
+				must.EqualStr(t, ev.Get("content").Get("creator").Str, userID, "wrong content.creator")
+				return true
+			})
+		})
+	})
+}