fix: add error message to form

test/mv_web/member_live/form_error_handling_test.exs

@@ -0,0 +1,140 @@
+defmodule MvWeb.MemberLive.FormErrorHandlingTest do
+  @moduledoc """
+  Tests for error handling in the member form, specifically flash message display.
+  """
+  use MvWeb.ConnCase, async: false
+
+  import Phoenix.LiveViewTest
+
+  alias Mv.Membership.Member
+
+  require Ash.Query
+
+  describe "error handling - flash messages" do
+    test "shows flash message when member creation fails with validation error", %{conn: conn} do
+      # Create a member with the same email to trigger uniqueness error
+      {:ok, _existing_member} =
+        Member
+        |> Ash.Changeset.for_create(:create_member, %{
+          first_name: "Existing",
+          last_name: "Member",
+          email: "duplicate@example.com"
+        })
+        |> Ash.create()
+
+      conn = conn_with_oidc_user(conn)
+      {:ok, view, _html} = live(conn, "/members/new")
+
+      # Try to create member with duplicate email
+      form_data = %{
+        "member[first_name]" => "New",
+        "member[last_name]" => "Member",
+        "member[email]" => "duplicate@example.com"
+      }
+
+      html =
+        view
+        |> form("#member-form", form_data)
+        |> render_submit()
+
+      # Should show flash error message
+      assert has_element?(view, "#flash-group")
+      assert html =~ "error" or html =~ "Error" or html =~ "Fehler" or
+               html =~ "failed" or html =~ "fehlgeschlagen" or
+               html =~ "Validation failed" or html =~ "Validierung fehlgeschlagen"
+    end
+
+    test "shows flash message when member creation fails with missing required fields", %{
+      conn: conn
+    } do
+      conn = conn_with_oidc_user(conn)
+      {:ok, view, _html} = live(conn, "/members/new")
+
+      # Submit form with missing required fields (e.g., email)
+      form_data = %{
+        "member[first_name]" => "Test",
+        "member[last_name]" => "User"
+        # email is missing
+      }
+
+      html =
+        view
+        |> form("#member-form", form_data)
+        |> render_submit()
+
+      # Should show flash error message
+      assert has_element?(view, "#flash-group")
+      assert html =~ "error" or html =~ "Error" or html =~ "Fehler" or
+               html =~ "failed" or html =~ "fehlgeschlagen" or
+               html =~ "Validation failed" or html =~ "Validierung fehlgeschlagen" or
+               html =~ "Please correct" or html =~ "Bitte korrigieren"
+    end
+
+    test "shows flash message when member update fails", %{conn: conn} do
+      # Create a member to edit
+      {:ok, member} =
+        Member
+        |> Ash.Changeset.for_create(:create_member, %{
+          first_name: "Original",
+          last_name: "Member",
+          email: "original@example.com"
+        })
+        |> Ash.create()
+
+      # Create another member with different email
+      {:ok, _other_member} =
+        Member
+        |> Ash.Changeset.for_create(:create_member, %{
+          first_name: "Other",
+          last_name: "Member",
+          email: "other@example.com"
+        })
+        |> Ash.create()
+
+      conn = conn_with_oidc_user(conn)
+      {:ok, view, _html} = live(conn, "/members/#{member.id}/edit")
+
+      # Try to update with duplicate email
+      form_data = %{
+        "member[first_name]" => "Updated",
+        "member[last_name]" => "Member",
+        "member[email]" => "other@example.com"
+      }
+
+      html =
+        view
+        |> form("#member-form", form_data)
+        |> render_submit()
+
+      # Should show flash error message
+      assert has_element?(view, "#flash-group")
+      assert html =~ "error" or html =~ "Error" or html =~ "Fehler" or
+               html =~ "failed" or html =~ "fehlgeschlagen" or
+               html =~ "Validation failed" or html =~ "Validierung fehlgeschlagen"
+    end
+
+    test "form still displays field-level validation errors when flash message is shown", %{
+      conn: conn
+    } do
+      conn = conn_with_oidc_user(conn)
+      {:ok, view, _html} = live(conn, "/members/new")
+
+      # Submit form with invalid email format
+      form_data = %{
+        "member[first_name]" => "Test",
+        "member[last_name]" => "User",
+        "member[email]" => "invalid-email-format"
+      }
+
+      html =
+        view
+        |> form("#member-form", form_data)
+        |> render_submit()
+
+      # Should show both flash message and field-level error
+      assert has_element?(view, "#flash-group")
+      # Field-level errors should also be visible in the form
+      assert html =~ "email" or html =~ "Email"
+    end
+  end
+end