Add generic E2E harness and Marmot TS relay test suite

.gitignore

@@ -35,7 +35,7 @@ erl_crash.dump
 
 # Temporary files, for example, from tests.
 /tmp/
-/.nak-e2e-server.log
+/.*-e2e-server.log
 # draw.io temp files
 .$*
 

README.md

@@ -169,3 +169,9 @@ For external CLI end-to-end checks with `nak`:
 ```bash
 mix test.nak_e2e
 ```
+
+For Marmot client end-to-end checks (TypeScript/Node suite using `marmot-ts`):
+
+```bash
+mix test.marmot_e2e
+```

mix.exs

@@ -61,6 +61,7 @@ defmodule Parrhesia.MixProject do
       "ecto.reset": ["ecto.drop", "ecto.setup"],
       test: ["ecto.create --quiet", "ecto.migrate --quiet", "test"],
       "test.nak_e2e": ["cmd ./scripts/run_nak_e2e.sh"],
+      "test.marmot_e2e": ["cmd ./scripts/run_marmot_e2e.sh"],
       # cov: ["cmd mix coveralls.lcov"],
       lint: ["format --check-formatted", "credo"],
       precommit: [
@@ -69,7 +70,8 @@ defmodule Parrhesia.MixProject do
         "credo --strict --all",
         "deps.unlock --unused",
         "test",
-        "test.nak_e2e"
+        "test.nak_e2e",
+        "test.marmot_e2e"
       ]
     ]
   end

scripts/run_e2e_suite.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ $# -lt 2 ]]; then
+  echo "usage: $0 <suite-name> <command> [args...]" >&2
+  exit 1
+fi
+
+SUITE_NAME="$1"
+shift
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+export MIX_ENV=test
+
+SUITE_SLUG="$(printf '%s' "$SUITE_NAME" | tr '[:upper:]' '[:lower:]' | tr -c 'a-z0-9' '_')"
+SUITE_UPPER="$(printf '%s' "$SUITE_SLUG" | tr '[:lower:]' '[:upper:]')"
+PORT_ENV_VAR="PARRHESIA_${SUITE_UPPER}_E2E_RELAY_PORT"
+
+DEFAULT_PORT="$(( (RANDOM % 10000) + 40000 ))"
+TEST_HTTP_PORT="${!PORT_ENV_VAR:-${PARRHESIA_E2E_RELAY_PORT:-$DEFAULT_PORT}}"
+
+export PARRHESIA_E2E_RELAY_PORT="$TEST_HTTP_PORT"
+printf -v "$PORT_ENV_VAR" '%s' "$TEST_HTTP_PORT"
+export "$PORT_ENV_VAR"
+
+if [[ -z "${PGDATABASE:-}" ]]; then
+  export PGDATABASE="parrhesia_${SUITE_SLUG}_test"
+fi
+
+PARRHESIA_TEST_HTTP_PORT=0 mix ecto.drop --quiet || true
+PARRHESIA_TEST_HTTP_PORT=0 mix ecto.create --quiet
+PARRHESIA_TEST_HTTP_PORT=0 mix ecto.migrate --quiet
+
+SERVER_LOG="${ROOT_DIR}/.${SUITE_SLUG}-e2e-server.log"
+: > "$SERVER_LOG"
+
+cleanup() {
+  if [[ -n "${SERVER_PID:-}" ]] && kill -0 "$SERVER_PID" 2>/dev/null; then
+    kill "$SERVER_PID" 2>/dev/null || true
+    wait "$SERVER_PID" 2>/dev/null || true
+  fi
+}
+
+trap cleanup EXIT INT TERM
+
+if ss -ltn "( sport = :${TEST_HTTP_PORT} )" | tail -n +2 | grep -q .; then
+  echo "Port ${TEST_HTTP_PORT} is already in use. Set ${PORT_ENV_VAR} to a free port." >&2
+  exit 1
+fi
+
+PARRHESIA_TEST_HTTP_PORT="$TEST_HTTP_PORT" mix run --no-halt >"$SERVER_LOG" 2>&1 &
+SERVER_PID=$!
+
+READY=0
+for _ in {1..100}; do
+  if curl -fsS "http://127.0.0.1:${TEST_HTTP_PORT}/health" >/dev/null 2>&1; then
+    READY=1
+    break
+  fi
+  sleep 0.1
+done
+
+if [[ "$READY" -ne 1 ]]; then
+  echo "Server did not become ready on port ${TEST_HTTP_PORT}" >&2
+  tail -n 200 "$SERVER_LOG" >&2 || true
+  exit 1
+fi
+
+PARRHESIA_TEST_HTTP_PORT=0 "$@"

scripts/run_marmot_e2e.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR/marmot-ts"
+
+if [[ ! -d node_modules ]]; then
+  npm install --no-audit --no-fund
+fi
+
+npm run compile
+
+cd "$ROOT_DIR"
+export PARRHESIA_MARMOT_E2E=1
+
+exec ./scripts/run_e2e_suite.sh \
+  marmot \
+  node --test ./test/marmot_e2e/marmot_client_e2e.test.mjs

scripts/run_nak_e2e.sh

@@ -4,54 +4,8 @@ set -euo pipefail
 ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 cd "$ROOT_DIR"
 
-export MIX_ENV=test
 export PARRHESIA_NAK_E2E=1
 
-TEST_HTTP_PORT="${PARRHESIA_NAK_E2E_RELAY_PORT:-$(( (RANDOM % 10000) + 40000 ))}"
-
-if [[ -z "${PGDATABASE:-}" ]]; then
-  export PGDATABASE="parrhesia_nak_e2e_test"
-fi
-
-PARRHESIA_TEST_HTTP_PORT=0 mix ecto.drop --quiet || true
-PARRHESIA_TEST_HTTP_PORT=0 mix ecto.create --quiet
-PARRHESIA_TEST_HTTP_PORT=0 mix ecto.migrate --quiet
-
-SERVER_LOG="${ROOT_DIR}/.nak-e2e-server.log"
-: > "$SERVER_LOG"
-
-cleanup() {
-  if [[ -n "${SERVER_PID:-}" ]] && kill -0 "$SERVER_PID" 2>/dev/null; then
-    kill "$SERVER_PID" 2>/dev/null || true
-    wait "$SERVER_PID" 2>/dev/null || true
-  fi
-}
-
-trap cleanup EXIT INT TERM
-
-if ss -ltn "( sport = :${TEST_HTTP_PORT} )" | tail -n +2 | grep -q .; then
-  echo "Port ${TEST_HTTP_PORT} is already in use. Set PARRHESIA_NAK_E2E_RELAY_PORT to a free port." >&2
-  exit 1
-fi
-
-PARRHESIA_TEST_HTTP_PORT="$TEST_HTTP_PORT" mix run --no-halt >"$SERVER_LOG" 2>&1 &
-SERVER_PID=$!
-
-READY=0
-for _ in {1..100}; do
-  if curl -fsS "http://127.0.0.1:${TEST_HTTP_PORT}/health" >/dev/null 2>&1; then
-    READY=1
-    break
-  fi
-  sleep 0.1
-done
-
-if [[ "$READY" -ne 1 ]]; then
-  echo "Server did not become ready on port ${TEST_HTTP_PORT}" >&2
-  tail -n 200 "$SERVER_LOG" >&2 || true
-  exit 1
-fi
-
-PARRHESIA_TEST_HTTP_PORT=0 \
-  PARRHESIA_NAK_E2E_RELAY_PORT="$TEST_HTTP_PORT" \
+exec ./scripts/run_e2e_suite.sh \
+  nak \
   mix test test/parrhesia/e2e/nak_cli_test.exs --no-start --only nak_e2e --timeout 15000

test/marmot_e2e/marmot_client_e2e.test.mjs

@@ -0,0 +1,605 @@
+import assert from "node:assert/strict";
+import { createHash, randomUUID } from "node:crypto";
+import test from "node:test";
+
+import {
+  InviteReader,
+  KEY_PACKAGE_KIND,
+  KEY_PACKAGE_RELAY_LIST_KIND,
+  GROUP_EVENT_KIND,
+  WELCOME_EVENT_KIND,
+  MarmotClient,
+  KeyPackageStore,
+  KeyValueGroupStateBackend,
+  createKeyPackageRelayListEvent,
+  deserializeApplicationData,
+  extractMarmotGroupData,
+  getKeyPackageRelayList,
+} from "../../marmot-ts/dist/index.js";
+import { PrivateKeyAccount } from "../../marmot-ts/node_modules/applesauce-accounts/dist/accounts/index.js";
+
+const GIFT_WRAP_KIND = 1059;
+
+const relayPort =
+  process.env.PARRHESIA_MARMOT_E2E_RELAY_PORT ??
+  process.env.PARRHESIA_E2E_RELAY_PORT ??
+  "4051";
+const relayHttpBase = `http://127.0.0.1:${relayPort}`;
+const relayHttpUrl = `${relayHttpBase}/relay`;
+const relayWsUrl = relayHttpUrl.replace("http://", "ws://");
+
+class MemoryBackend {
+  #map = new Map();
+
+  async getItem(key) {
+    return this.#map.get(key) ?? null;
+  }
+
+  async setItem(key, value) {
+    this.#map.set(key, value);
+    return value;
+  }
+
+  async removeItem(key) {
+    this.#map.delete(key);
+  }
+
+  async clear() {
+    this.#map.clear();
+  }
+
+  async keys() {
+    return Array.from(this.#map.keys());
+  }
+}
+
+class RelayNetwork {
+  constructor(relayWs, relayHttp) {
+    this.relayWs = relayWs;
+    this.relayHttp = relayHttp;
+  }
+
+  async publish(relays, event) {
+    const responses = await Promise.all(
+      relays.map(async (relay) => {
+        const frame = await publishEvent(relay, event);
+        return [relay, { from: relay, ok: Boolean(frame[2]), message: frame[3] }];
+      }),
+    );
+
+    return Object.fromEntries(responses);
+  }
+
+  async request(relays, filters) {
+    const filtersArray = Array.isArray(filters) ? filters : [filters];
+
+    const eventsById = new Map();
+
+    for (const relay of relays) {
+      const events = await requestEvents(relay, filtersArray);
+      for (const event of events) {
+        eventsById.set(event.id, event);
+      }
+    }
+
+    return Array.from(eventsById.values());
+  }
+
+  subscription(relays, filters) {
+    return {
+      subscribe: (observer) => {
+        let unsubscribed = false;
+
+        void this.request(relays, filters)
+          .then((events) => {
+            for (const event of events) {
+              if (unsubscribed) {
+                return;
+              }
+
+              observer.next?.(event);
+            }
+
+            if (!unsubscribed) {
+              observer.complete?.();
+            }
+          })
+          .catch((error) => {
+            if (!unsubscribed) {
+              observer.error?.(error);
+            }
+          });
+
+        return {
+          unsubscribe: () => {
+            unsubscribed = true;
+          },
+        };
+      },
+    };
+  }
+
+  async getUserInboxRelays(pubkey) {
+    const relayListEvents = await this.request([this.relayWs], [
+      { kinds: [KEY_PACKAGE_RELAY_LIST_KIND], authors: [pubkey], limit: 1 },
+    ]);
+
+    if (relayListEvents.length === 0) {
+      return [this.relayWs];
+    }
+
+    const relays = getKeyPackageRelayList(relayListEvents[0]);
+    return relays.length > 0 ? relays : [this.relayWs];
+  }
+}
+
+function createClient(account, network) {
+  return new MarmotClient({
+    signer: account.signer,
+    network,
+    keyPackageStore: new KeyPackageStore(new MemoryBackend()),
+    groupStateBackend: new KeyValueGroupStateBackend(new MemoryBackend()),
+  });
+}
+
+function computeEventId(event) {
+  const payload = [
+    0,
+    event.pubkey,
+    event.created_at,
+    event.kind,
+    event.tags,
+    event.content,
+  ];
+
+  return createHash("sha256").update(JSON.stringify(payload)).digest("hex");
+}
+
+function bytesToHex(bytes) {
+  return Buffer.from(bytes).toString("hex");
+}
+
+function unixNow() {
+  return Math.floor(Date.now() / 1000);
+}
+
+function randomSubId(prefix) {
+  return `${prefix}-${randomUUID()}`;
+}
+
+async function openRelay(relayUrl, timeoutMs = 5_000) {
+  const ws = new WebSocket(relayUrl);
+
+  await new Promise((resolve, reject) => {
+    const timeout = setTimeout(() => {
+      reject(new Error(`WebSocket open timeout for ${relayUrl}`));
+    }, timeoutMs);
+
+    ws.addEventListener(
+      "open",
+      () => {
+        clearTimeout(timeout);
+        resolve();
+      },
+      { once: true },
+    );
+
+    ws.addEventListener(
+      "error",
+      (error) => {
+        clearTimeout(timeout);
+        reject(error.error ?? error);
+      },
+      { once: true },
+    );
+  });
+
+  const queue = [];
+  let waiter = null;
+
+  ws.addEventListener("message", (message) => {
+    let frame;
+
+    try {
+      frame = JSON.parse(String(message.data));
+    } catch {
+      return;
+    }
+
+    if (waiter) {
+      const activeWaiter = waiter;
+      waiter = null;
+      activeWaiter.resolve(frame);
+    } else {
+      queue.push(frame);
+    }
+  });
+
+  ws.addEventListener("close", () => {
+    if (waiter) {
+      const activeWaiter = waiter;
+      waiter = null;
+      activeWaiter.reject(new Error(`WebSocket closed for ${relayUrl}`));
+    }
+  });
+
+  return {
+    send(frame) {
+      ws.send(JSON.stringify(frame));
+    },
+
+    nextFrame(timeoutMs = 5_000) {
+      if (queue.length > 0) {
+        return Promise.resolve(queue.shift());
+      }
+
+      if (waiter) {
+        return Promise.reject(new Error("Only one pending frame wait is supported"));
+      }
+
+      return new Promise((resolve, reject) => {
+        const timeout = setTimeout(() => {
+          if (waiter) {
+            waiter = null;
+          }
+          reject(new Error(`Timed out waiting for relay frame from ${relayUrl}`));
+        }, timeoutMs);
+
+        waiter = {
+          resolve: (frame) => {
+            clearTimeout(timeout);
+            resolve(frame);
+          },
+          reject: (error) => {
+            clearTimeout(timeout);
+            reject(error);
+          },
+        };
+      });
+    },
+
+    async close() {
+      if (ws.readyState === WebSocket.OPEN || ws.readyState === WebSocket.CONNECTING) {
+        ws.close();
+      }
+    },
+  };
+}
+
+async function publishEvent(relayUrl, event, timeoutMs = 5_000) {
+  const relay = await openRelay(relayUrl, timeoutMs);
+
+  try {
+    relay.send(["EVENT", event]);
+
+    while (true) {
+      const frame = await relay.nextFrame(timeoutMs);
+      if (Array.isArray(frame) && frame[0] === "OK" && frame[1] === event.id) {
+        return frame;
+      }
+    }
+  } finally {
+    await relay.close();
+  }
+}
+
+async function requestEvents(relayUrl, filters, timeoutMs = 5_000) {
+  const relay = await openRelay(relayUrl, timeoutMs);
+  const subscriptionId = randomSubId("req");
+  const events = [];
+
+  try {
+    relay.send(["REQ", subscriptionId, ...filters]);
+
+    while (true) {
+      const frame = await relay.nextFrame(timeoutMs);
+      if (!Array.isArray(frame)) {
+        continue;
+      }
+
+      const [type, subId, payload] = frame;
+
+      if (type === "EVENT" && subId === subscriptionId) {
+        events.push(payload);
+      }
+
+      if (type === "EOSE" && subId === subscriptionId) {
+        break;
+      }
+
+      if (type === "CLOSED" && subId === subscriptionId) {
+        throw new Error(`relay closed request ${subscriptionId}: ${payload}`);
+      }
+    }
+
+    relay.send(["CLOSE", subscriptionId]);
+    return events;
+  } finally {
+    await relay.close();
+  }
+}
+
+async function requestGiftWrapsWithAuth({ relayUrl, relayHttpUrl, signer, recipientPubkey }) {
+  const relay = await openRelay(relayUrl, 5_000);
+  const probeSubId = randomSubId("auth-probe");
+
+  try {
+    relay.send(["REQ", probeSubId, { kinds: [GIFT_WRAP_KIND], "#p": [recipientPubkey], limit: 1 }]);
+
+    let challenge = null;
+
+    for (;;) {
+      const frame = await relay.nextFrame(5_000);
+      if (!Array.isArray(frame)) {
+        continue;
+      }
+
+      if (frame[0] === "AUTH" && typeof frame[1] === "string") {
+        challenge = frame[1];
+      }
+
+      if (frame[0] === "CLOSED" && frame[1] === probeSubId) {
+        break;
+      }
+    }
+
+    assert.ok(challenge, "relay should provide an AUTH challenge for restricted giftwrap queries");
+
+    const authEvent = await signer.signEvent({
+      kind: 22_242,
+      created_at: unixNow(),
+      tags: [
+        ["challenge", challenge],
+        ["relay", relayHttpUrl],
+      ],
+      content: "",
+    });
+
+    relay.send(["AUTH", authEvent]);
+
+    for (;;) {
+      const frame = await relay.nextFrame(5_000);
+      if (!Array.isArray(frame)) {
+        continue;
+      }
+
+      if (frame[0] === "OK" && frame[1] === authEvent.id) {
+        assert.equal(frame[2], true, `auth rejected: ${frame[3] ?? "unknown error"}`);
+        break;
+      }
+    }
+
+    const subscriptionId = randomSubId("giftwrap");
+    const giftWraps = [];
+
+    relay.send([
+      "REQ",
+      subscriptionId,
+      { kinds: [GIFT_WRAP_KIND], "#p": [recipientPubkey], limit: 20 },
+    ]);
+
+    for (;;) {
+      const frame = await relay.nextFrame(5_000);
+      if (!Array.isArray(frame)) {
+        continue;
+      }
+
+      const [type, subId, payload] = frame;
+
+      if (type === "EVENT" && subId === subscriptionId) {
+        giftWraps.push(payload);
+      }
+
+      if (type === "EOSE" && subId === subscriptionId) {
+        break;
+      }
+
+      if (type === "CLOSED" && subId === subscriptionId) {
+        throw new Error(`giftwrap request closed unexpectedly: ${payload}`);
+      }
+    }
+
+    relay.send(["CLOSE", subscriptionId]);
+    return giftWraps;
+  } finally {
+    await relay.close();
+  }
+}
+
+test("relay returns NIP-11 metadata and advertises Marmot support", async () => {
+  const response = await fetch(relayHttpUrl, {
+    headers: { Accept: "application/nostr+json" },
+  });
+
+  assert.equal(response.status, 200);
+
+  const body = await response.json();
+  assert.equal(body.name, "Parrhesia");
+  assert.ok(body.supported_nips.includes(59));
+  assert.ok(body.supported_nips.includes(77));
+});
+
+test("key package create + rotate works against relay storage", async () => {
+  const account = PrivateKeyAccount.generateNew();
+  const pubkey = await account.signer.getPublicKey();
+  const network = new RelayNetwork(relayWsUrl, relayHttpUrl);
+  const client = createClient(account, network);
+
+  const relayListEvent = await account.signer.signEvent(
+    createKeyPackageRelayListEvent({
+      pubkey,
+      relays: [relayWsUrl],
+      client: "parrhesia-marmot-e2e",
+    }),
+  );
+
+  await network.publish([relayWsUrl], relayListEvent);
+
+  const keyPackage = await client.keyPackages.create({
+    relays: [relayWsUrl],
+    client: "parrhesia-marmot-e2e",
+  });
+
+  const keyPackageRef = bytesToHex(keyPackage.keyPackageRef);
+
+  const keyPackageEvents = await network.request([relayWsUrl], [
+    { kinds: [KEY_PACKAGE_KIND], authors: [pubkey], limit: 10 },
+  ]);
+
+  assert.ok(keyPackageEvents.length >= 1);
+
+  const matchingByRef = await network.request([relayWsUrl], [
+    { kinds: [KEY_PACKAGE_KIND], "#i": [keyPackageRef], limit: 10 },
+  ]);
+
+  assert.ok(matchingByRef.length >= 1);
+
+  await client.keyPackages.rotate(keyPackage.keyPackageRef, { relays: [relayWsUrl] });
+
+  const afterRotateOldRef = await network.request([relayWsUrl], [
+    { kinds: [KEY_PACKAGE_KIND], "#i": [keyPackageRef], limit: 10 },
+  ]);
+
+  assert.equal(afterRotateOldRef.length, 0);
+
+
+});
+
+test("kind 445 requests without #h are rejected by relay policy", async () => {
+  const relay = await openRelay(relayWsUrl, 5_000);
+
+  try {
+    const subscriptionId = randomSubId("missing-h");
+    relay.send(["REQ", subscriptionId, { kinds: [GROUP_EVENT_KIND], limit: 5 }]);
+
+    for (;;) {
+      const frame = await relay.nextFrame(5_000);
+      if (!Array.isArray(frame)) {
+        continue;
+      }
+
+      if (frame[0] === "CLOSED" && frame[1] === subscriptionId) {
+        assert.match(String(frame[2]), /kind 445 queries must include a #h tag/);
+        break;
+      }
+    }
+  } finally {
+    await relay.close();
+  }
+});
+
+test("admin invites user, user joins, and message round-trip decrypts", async () => {
+  const network = new RelayNetwork(relayWsUrl, relayHttpUrl);
+
+  const adminAccount = PrivateKeyAccount.generateNew();
+  const inviteeAccount = PrivateKeyAccount.generateNew();
+
+  const adminPubkey = await adminAccount.signer.getPublicKey();
+  const inviteePubkey = await inviteeAccount.signer.getPublicKey();
+
+  const adminClient = createClient(adminAccount, network);
+  const inviteeClient = createClient(inviteeAccount, network);
+
+  const adminRelayList = await adminAccount.signer.signEvent(
+    createKeyPackageRelayListEvent({
+      pubkey: adminPubkey,
+      relays: [relayWsUrl],
+      client: "parrhesia-marmot-e2e",
+    }),
+  );
+
+  const inviteeRelayList = await inviteeAccount.signer.signEvent(
+    createKeyPackageRelayListEvent({
+      pubkey: inviteePubkey,
+      relays: [relayWsUrl],
+      client: "parrhesia-marmot-e2e",
+    }),
+  );
+
+  await network.publish([relayWsUrl], adminRelayList);
+  await network.publish([relayWsUrl], inviteeRelayList);
+
+  await inviteeClient.keyPackages.create({
+    relays: [relayWsUrl],
+    client: "parrhesia-marmot-e2e",
+  });
+
+  const adminGroup = await adminClient.createGroup(`Parrhesia Group ${randomUUID()}`, {
+    relays: [relayWsUrl],
+    adminPubkeys: [adminPubkey],
+  });
+
+  const inviteeKeyPackageEvents = await network.request([relayWsUrl], [
+    { kinds: [KEY_PACKAGE_KIND], authors: [inviteePubkey], limit: 1 },
+  ]);
+
+  assert.equal(inviteeKeyPackageEvents.length, 1);
+
+  await adminGroup.inviteByKeyPackageEvent(inviteeKeyPackageEvents[0]);
+
+  const marmotGroupData = extractMarmotGroupData(adminGroup.state);
+  assert.ok(marmotGroupData, "group should include Marmot extension data");
+
+  const nostrGroupId = bytesToHex(marmotGroupData.nostrGroupId);
+
+  const commitEvents = await network.request([relayWsUrl], [
+    { kinds: [GROUP_EVENT_KIND], "#h": [nostrGroupId], limit: 10 },
+  ]);
+  assert.ok(commitEvents.length >= 1);
+
+  const giftWraps = await requestGiftWrapsWithAuth({
+    relayUrl: relayWsUrl,
+    relayHttpUrl,
+    signer: inviteeAccount.signer,
+    recipientPubkey: inviteePubkey,
+  });
+
+  assert.equal(giftWraps.length, 1);
+
+  const inviteReader = new InviteReader({
+    signer: inviteeAccount.signer,
+    store: {
+      received: new MemoryBackend(),
+      unread: new MemoryBackend(),
+      seen: new MemoryBackend(),
+    },
+  });
+
+  await inviteReader.ingestEvents(giftWraps);
+  const invites = await inviteReader.decryptGiftWraps();
+
+  assert.equal(invites.length, 1);
+  assert.equal(invites[0].kind, WELCOME_EVENT_KIND);
+
+  const { group: inviteeGroup } = await inviteeClient.joinGroupFromWelcome({
+    welcomeRumor: invites[0],
+  });
+
+  const messageRumor = {
+    kind: 9,
+    pubkey: inviteePubkey,
+    created_at: unixNow(),
+    tags: [],
+    content: `hello-from-invitee-${randomUUID()}`,
+  };
+  messageRumor.id = computeEventId(messageRumor);
+
+  await inviteeGroup.sendApplicationRumor(messageRumor);
+
+  const groupEventsAfterMessage = await network.request([relayWsUrl], [
+    { kinds: [GROUP_EVENT_KIND], "#h": [nostrGroupId], limit: 50 },
+  ]);
+
+  const decryptedMessages = [];
+
+  for await (const result of adminGroup.ingest(groupEventsAfterMessage)) {
+    if (result.kind === "processed" && result.result.kind === "applicationMessage") {
+      decryptedMessages.push(deserializeApplicationData(result.result.message));
+    }
+  }
+
+  assert.ok(
+    decryptedMessages.some((rumor) => rumor.content === messageRumor.content),
+    "admin should decrypt invitee application message",
+  );
+});