Handle insert_all with streams for inline engine

The inline engine's `insert_all_jobs` callback incorrectly expected
changesets to always be a list rather than a stream.

Closes #1151

lib/oban/engines/inline.ex

@@ -76,7 +76,7 @@ defmodule Oban.Engines.Inline do
   defp expand(value), do: expand(value, %{})
   defp expand(fun, changes) when is_function(fun, 1), do: expand(fun.(changes), changes)
   defp expand(%{changesets: changesets}, _), do: expand(changesets, %{})
-  defp expand(changesets, _) when is_list(changesets), do: changesets
+  defp expand(changesets, _), do: changesets
 
   # Execution Helpers
 

test/oban/engines/inline_test.exs

@@ -37,6 +37,17 @@ defmodule Oban.Engines.InlineTest do
     end
   end
 
+  test "executing multiple jobs inserted from a stream" do
+    name = start_supervised_oban!(testing: :inline)
+
+    stream = Stream.map(1..2, &Worker.new(%{ref: &1, action: "OK"}))
+
+    assert [_job_1, _job_2] = Oban.insert_all(name, stream)
+
+    assert_receive {:ok, 1}
+    assert_receive {:ok, 2}
+  end
+
   test "executing single jobs inserted within a multi" do
     name = start_supervised_oban!(testing: :inline)