diff --git a/test/support/conn_case.ex b/test/support/conn_case.ex
index 47cb65a80..00500f444 100644
--- a/test/support/conn_case.ex
+++ b/test/support/conn_case.ex
@@ -125,11 +125,11 @@ defmodule Pleroma.Web.ConnCase do
     end
 
     if tags[:needs_streamer] do
-      start_supervised(%{
-        id: Pleroma.Web.Streamer.registry(),
-        start:
-          {Registry, :start_link, [[keys: :duplicate, name: Pleroma.Web.Streamer.registry()]]}
-      })
+      Pleroma.DataCase.start_streamer()
+    end
+
+    if tags[:stubbed_pipeline] do
+      Pleroma.DataCase.stub_pipeline()
     end
 
     {:ok, conn: Phoenix.ConnTest.build_conn()}
diff --git a/test/support/data_case.ex b/test/support/data_case.ex
index d5456521c..21e026ef9 100644
--- a/test/support/data_case.ex
+++ b/test/support/data_case.ex
@@ -55,16 +55,37 @@ defmodule Pleroma.DataCase do
     end
 
     if tags[:needs_streamer] do
-      start_supervised(%{
-        id: Pleroma.Web.Streamer.registry(),
-        start:
-          {Registry, :start_link, [[keys: :duplicate, name: Pleroma.Web.Streamer.registry()]]}
-      })
+      start_streamer()
+    end
+
+    if tags[:stubbed_pipeline] do
+      stub_pipeline()
     end
 
     :ok
   end
 
+  def start_streamer do
+    start_supervised(%{
+      id: Pleroma.Web.Streamer.registry(),
+      start: {Registry, :start_link, [[keys: :duplicate, name: Pleroma.Web.Streamer.registry()]]}
+    })
+  end
+
+  def stub_pipeline do
+    Mox.stub_with(Pleroma.Web.ActivityPub.SideEffectsMock, Pleroma.Web.ActivityPub.SideEffects)
+
+    Mox.stub_with(
+      Pleroma.Web.ActivityPub.ObjectValidatorMock,
+      Pleroma.Web.ActivityPub.ObjectValidator
+    )
+
+    Mox.stub_with(Pleroma.Web.ActivityPub.MRFMock, Pleroma.Web.ActivityPub.MRF)
+    Mox.stub_with(Pleroma.Web.ActivityPub.ActivityPubMock, Pleroma.Web.ActivityPub.ActivityPub)
+    Mox.stub_with(Pleroma.Web.FederatorMock, Pleroma.Web.Federator)
+    Mox.stub_with(Pleroma.ConfigMock, Pleroma.Config)
+  end
+
   def ensure_local_uploader(context) do
     test_uploader = Map.get(context, :uploader, Pleroma.Uploaders.Local)
     uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])