diff --git a/src/backend/core/tests/commands/test_index.py b/src/backend/core/tests/commands/test_index.py
new file mode 100644
index 00000000..1da70344
--- /dev/null
+++ b/src/backend/core/tests/commands/test_index.py
@@ -0,0 +1,49 @@
+"""
+Unit test for `index` command.
+"""
+
+from unittest import mock
+
+from django.core.management import call_command
+from django.db import transaction
+
+import pytest
+
+from core import factories
+from core.services.search_indexers import FindDocumentIndexer
+
+
+@pytest.mark.django_db
+def test_index():
+    """Test the command `index` that run the Find app indexer for all the available documents."""
+    user = factories.UserFactory()
+    indexer = FindDocumentIndexer()
+
+    with transaction.atomic():
+        doc = factories.DocumentFactory()
+        empty_doc = factories.DocumentFactory(title=None, content='')
+        no_title_doc = factories.DocumentFactory(title=None)
+
+        factories.UserDocumentAccessFactory(document=doc, user=user)
+        factories.UserDocumentAccessFactory(document=empty_doc, user=user)
+        factories.UserDocumentAccessFactory(document=no_title_doc, user=user)
+
+    accesses = {
+        str(doc.path): {"users": [user.sub]},
+        str(empty_doc.path): {"users": [user.sub]},
+        str(no_title_doc.path): {"users": [user.sub]},
+    }
+
+    def sortkey(d):
+        return d["id"]
+
+    with mock.patch.object(FindDocumentIndexer, "push") as mock_push:
+        call_command("index")
+
+        push_call_args = [call.args[0] for call in mock_push.call_args_list]
+
+        assert len(push_call_args) == 1  # called once but with a batch of docs
+        assert sorted(push_call_args[0], key=sortkey) == sorted([
+            indexer.serialize_document(doc, accesses),
+            indexer.serialize_document(no_title_doc, accesses),
+        ], key=sortkey)