diff --git a/test/feed-get-id.test.js b/test/feed-get-id.test.js
new file mode 100644
index 0000000..4db5f95
--- /dev/null
+++ b/test/feed-get-id.test.js
@@ -0,0 +1,41 @@
+const test = require('tape')
+const path = require('path')
+const os = require('os')
+const rimraf = require('rimraf')
+const SecretStack = require('secret-stack')
+const caps = require('ssb-caps')
+const p = require('util').promisify
+const MsgV2 = require('../lib/msg-v2')
+const { generateKeypair } = require('./util')
+
+const DIR = path.join(os.tmpdir(), 'ppppp-db-feed-publish')
+rimraf.sync(DIR)
+
+const keys = generateKeypair('alice')
+let peer
+let group
+let rootMsg
+let rootHash
+test('setup', async (t) => {
+  peer = SecretStack({ appKey: caps.shs })
+    .use(require('../lib'))
+    .use(require('ssb-box'))
+    .call(null, { keys, path: DIR })
+
+  await peer.db.loaded()
+
+  group = (await p(peer.db.group.create)(null)).hash
+  rootMsg = MsgV2.createRoot(group, 'post', keys)
+  rootHash = MsgV2.getMsgHash(rootMsg)
+
+  await p(peer.db.add)(rootMsg, rootHash)
+})
+
+test('feed.getId()', async (t) => {
+  const id = peer.db.feed.getId(group, 'post')
+  t.equals(id, rootHash, 'feed.getId() returns root hash')
+})
+
+test('teardown', (t) => {
+  peer.close(t.end)
+})