test: add tests for user-member linking and fuzzy search (#168)

test/membership/member_fuzzy_search_linking_test.exs

@@ -0,0 +1,158 @@
+defmodule Mv.Membership.MemberFuzzySearchLinkingTest do
+  @moduledoc """
+  Tests fuzzy search in Member.available_for_linking action.
+  Verifies PostgreSQL trigram matching for member search.
+  """
+
+  use Mv.DataCase, async: true
+
+  alias Mv.Accounts
+  alias Mv.Membership
+
+  describe "available_for_linking with fuzzy search" do
+    test "finds member despite typo" do
+      # Create member with specific name
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Jonathan",
+          last_name: "Smith",
+          email: "jonathan@example.com"
+        })
+
+      # Search with typo
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Jonatan"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should find Jonathan despite typo
+      assert length(members) == 1
+      assert hd(members).id == member.id
+    end
+
+    test "finds member with partial match" do
+      # Create member
+      {:ok, member} =
+        Membership.create_member(%{
+          first_name: "Alexander",
+          last_name: "Williams",
+          email: "alex@example.com"
+        })
+
+      # Search with partial
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Alex"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should find Alexander
+      assert length(members) == 1
+      assert hd(members).id == member.id
+    end
+
+    test "email match overrides fuzzy search" do
+      # Create two members
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "John",
+          last_name: "Doe",
+          email: "john@example.com"
+        })
+
+      {:ok, _member2} =
+        Membership.create_member(%{
+          first_name: "Jane",
+          last_name: "Smith",
+          email: "jane@example.com"
+        })
+
+      # Search with user_email that matches member1, but search_query that would match member2
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: "john@example.com",
+          search_query: "Jane"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Apply email filter
+      filtered_members = Mv.Membership.Member.filter_by_email_match(members, "john@example.com")
+
+      # Should only return member1 (email match takes precedence)
+      assert length(filtered_members) == 1
+      assert hd(filtered_members).id == member1.id
+    end
+
+    test "limits to 10 results" do
+      # Create 15 members with similar names
+      for i <- 1..15 do
+        Membership.create_member(%{
+          first_name: "Test#{i}",
+          last_name: "Member",
+          email: "test#{i}@example.com"
+        })
+      end
+
+      # Search for "Test"
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Test"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should return max 10 members
+      assert length(members) == 10
+    end
+
+    test "excludes linked members" do
+      # Create member and link to user
+      {:ok, member1} =
+        Membership.create_member(%{
+          first_name: "Linked",
+          last_name: "Member",
+          email: "linked@example.com"
+        })
+
+      {:ok, _user} =
+        Accounts.create_user(%{
+          email: "user@example.com",
+          member: %{id: member1.id}
+        })
+
+      # Create unlinked member
+      {:ok, member2} =
+        Membership.create_member(%{
+          first_name: "Unlinked",
+          last_name: "Member",
+          email: "unlinked@example.com"
+        })
+
+      # Search for "Member"
+      query =
+        Mv.Membership.Member
+        |> Ash.Query.for_read(:available_for_linking, %{
+          user_email: nil,
+          search_query: "Member"
+        })
+
+      {:ok, members} = Ash.read(query, domain: Mv.Membership)
+
+      # Should only return unlinked member
+      member_ids = Enum.map(members, & &1.id)
+      refute member1.id in member_ids
+      assert member2.id in member_ids
+    end
+  end
+end