Fix flaky test

test/plexus/pagination_helpers_test.exs

@@ -1,4 +1,27 @@
 defmodule Plexus.PaginationHelpersTest do
   use ExUnit.Case, async: true
-  doctest Plexus.PaginationHelpers
+
+  alias Plexus.PaginationHelpers
+
+  describe "page_opts/1" do
+    test "with page and page_size" do
+      assert [page: 9, page_size: 30] = PaginationHelpers.page_opts(%{page_size: 30, page: 9})
+    end
+
+    test "with limit" do
+      assert [page_size: 30] = PaginationHelpers.page_opts(%{limit: 30})
+    end
+
+    test "with page only" do
+      assert [page: 3] = PaginationHelpers.page_opts(%{page: 3})
+    end
+
+    test "with empty map" do
+      assert [] = PaginationHelpers.page_opts(%{})
+    end
+
+    test "with non supported key/values" do
+      assert [] = PaginationHelpers.page_opts(%{bogus: :value})
+    end
+  end
 end