measure time to create a y-indexeddb instance

Author: dmonad

tests/y-indexeddb.tests.js

@@ -4,6 +4,18 @@ import { IndexeddbPersistence, clearDocument, PREFERRED_TRIM_SIZE, fetchUpdates
 import * as t from 'lib0/testing.js'
 import * as promise from 'lib0/promise.js'
 
+/**
+ * @param {t.TestCase} tc
+ */
+export const testPerf = async tc => {
+  await t.measureTimeAsync('time to create a y-indexeddb instance', async () => {
+    const ydoc = new Y.Doc()
+    const provider = new IndexeddbPersistence(tc.testName, ydoc)
+    await provider.whenSynced
+    provider.destroy()
+  })
+}
+
 /**
  * @param {t.TestCase} tc
  */