snapshot of https://github.com/ueberdosis/hocuspocus.git @ cf3cfa355b4d3bb61c6b6c80071f71783e32470e (2026-09-15)

tests/server/afterHandleMessage.ts

@@ -0,0 +1,102 @@
+import test from 'ava'
+import { newHocuspocus, newHocuspocusProvider } from '../utils/index.ts'
+import { retryableAssertion } from '../utils/retryableAssertion.ts'
+
+test('afterHandleMessage is called after the update has been applied', async t => {
+  await new Promise(async resolve => {
+    const server = await newHocuspocus(t, {
+      async afterHandleMessage({ document }) {
+        // contrary to beforeHandleMessage, the update is already applied here
+        if (document.getArray('foo').get(0) === 'bar') {
+          t.pass()
+          resolve('done')
+        }
+      },
+    })
+
+    const provider = newHocuspocusProvider(t, server, {
+      onSynced() {
+        provider.document.getArray('foo').insert(0, ['bar'])
+      },
+    })
+  })
+})
+
+test('afterHandleMessage is called once per handled message', async t => {
+  let beforeHandleMessageCount = 0
+  let afterHandleMessageCount = 0
+
+  await new Promise(async resolve => {
+    const server = await newHocuspocus(t, {
+      async beforeHandleMessage() {
+        beforeHandleMessageCount += 1
+      },
+      async afterHandleMessage() {
+        afterHandleMessageCount += 1
+      },
+    })
+
+    newHocuspocusProvider(t, server, {
+      onClose() {
+        t.fail()
+      },
+    })
+    newHocuspocusProvider(t, server, {
+      onClose() {
+        t.fail()
+      },
+    })
+
+    resolve('done')
+  })
+
+  await retryableAssertion(t, tt => {
+    tt.true(afterHandleMessageCount > 0)
+    tt.is(afterHandleMessageCount, beforeHandleMessageCount)
+  })
+})
+
+test('afterHandleMessage is not called when beforeHandleMessage rejects', async t => {
+  let afterHandleMessageCount = 0
+
+  await new Promise(async resolve => {
+    const server = await newHocuspocus(t, {
+      async beforeHandleMessage() {
+        throw new Error()
+      },
+      async afterHandleMessage() {
+        afterHandleMessageCount += 1
+      },
+    })
+
+    newHocuspocusProvider(t, server, {
+      onClose() {
+        resolve('done')
+      },
+    })
+  })
+
+  await retryableAssertion(t, tt => {
+    tt.is(afterHandleMessageCount, 0)
+  })
+})
+
+test('an exception thrown in afterHandleMessage does not close the connection', async t => {
+  await new Promise(async resolve => {
+    const server = await newHocuspocus(t, {
+      async afterHandleMessage() {
+        throw new Error()
+      },
+    })
+
+    const provider = newHocuspocusProvider(t, server, {
+      onClose() {
+        t.fail()
+      },
+      onSynced() {
+        t.pass()
+        setTimeout(() => resolve('done'), 100)
+      },
+    })
+  })
+})