refactor: add test to seperate async false module

test/mv_web/live/global_settings_live_config_test.exs

@@ -0,0 +1,73 @@
+defmodule MvWeb.GlobalSettingsLiveConfigTest do
+  @moduledoc """
+  Tests for GlobalSettingsLive that modify global Application configuration.
+
+  These tests run with `async: false` to prevent race conditions when
+  modifying global Application environment variables (Application.put_env).
+  This follows the same pattern as Mv.ConfigTest.
+  """
+  use MvWeb.ConnCase, async: false
+  import Phoenix.LiveViewTest
+
+  # Helper function to upload CSV file in tests
+  defp upload_csv_file(view, csv_content, filename \\ "test_import.csv") do
+    view
+    |> file_input("#csv-upload-form", :csv_file, [
+      %{
+        last_modified: System.system_time(:second),
+        name: filename,
+        content: csv_content,
+        size: byte_size(csv_content),
+        type: "text/csv"
+      }
+    ])
+    |> render_upload(filename)
+  end
+
+  describe "CSV Import - Configuration Tests" do
+    setup %{conn: conn} do
+      # Ensure admin user
+      admin_user = Mv.Fixtures.user_with_role_fixture("admin")
+      conn = MvWeb.ConnCase.conn_with_password_user(conn, admin_user)
+
+      {:ok, conn: conn, admin_user: admin_user}
+    end
+
+    test "configured row limit is enforced", %{conn: conn} do
+      # Business rule: CSV import respects configured row limits
+      # Test that a custom limit (500) is enforced, not just the default (1000)
+      original_config = Application.get_env(:mv, :csv_import, [])
+
+      try do
+        Application.put_env(:mv, :csv_import, max_rows: 500)
+
+        {:ok, view, _html} = live(conn, ~p"/settings")
+
+        # Generate CSV with 501 rows (exceeding custom limit of 500)
+        header = "first_name;last_name;email;street;postal_code;city\n"
+
+        rows =
+          for i <- 1..501 do
+            "Row#{i};Last#{i};email#{i}@example.com;Street#{i};12345;City#{i}\n"
+          end
+
+        large_csv = header <> Enum.join(rows)
+
+        # Simulate file upload using helper function
+        upload_csv_file(view, large_csv, "too_many_rows_custom.csv")
+
+        view
+        |> form("#csv-upload-form", %{})
+        |> render_submit()
+
+        html = render(view)
+        # Business rule: import should be rejected when exceeding configured limit
+        assert html =~ "exceeds" or html =~ "maximum" or html =~ "limit" or
+                 html =~ "Failed to prepare"
+      after
+        # Restore original config
+        Application.put_env(:mv, :csv_import, original_config)
+      end
+    end
+  end
+end

test/mv_web/live/global_settings_live_test.exs

@@ -687,42 +687,5 @@ defmodule MvWeb.GlobalSettingsLiveTest do
       # Check that file input has accept attribute for CSV
       assert html =~ ~r/accept=["'][^"']*csv["']/i or html =~ "CSV files only"
     end
-
-    test "configured row limit is enforced", %{conn: conn} do
-      # Business rule: CSV import respects configured row limits
-      # Test that a custom limit (500) is enforced, not just the default (1000)
-      original_config = Application.get_env(:mv, :csv_import, [])
-
-      try do
-        Application.put_env(:mv, :csv_import, max_rows: 500)
-
-        {:ok, view, _html} = live(conn, ~p"/settings")
-
-        # Generate CSV with 501 rows (exceeding custom limit of 500)
-        header = "first_name;last_name;email;street;postal_code;city\n"
-
-        rows =
-          for i <- 1..501 do
-            "Row#{i};Last#{i};email#{i}@example.com;Street#{i};12345;City#{i}\n"
-          end
-
-        large_csv = header <> Enum.join(rows)
-
-        # Simulate file upload using helper function
-        upload_csv_file(view, large_csv, "too_many_rows_custom.csv")
-
-        view
-        |> form("#csv-upload-form", %{})
-        |> render_submit()
-
-        html = render(view)
-        # Business rule: import should be rejected when exceeding configured limit
-        assert html =~ "exceeds" or html =~ "maximum" or html =~ "limit" or
-                 html =~ "Failed to prepare"
-      after
-        # Restore original config
-        Application.put_env(:mv, :csv_import, original_config)
-      end
-    end
   end
 end