test(copi): add COPI test coverage to reach 90% threshold

Author: immortal71

copi.owasp.org/test/copi/cornucopia_logic_test.exs

@@ -96,7 +96,7 @@ defmodule Copi.CornucopiaLogicTest do
     create_card("Wild Card", "1")
     create_card("Hearts", "5")
     create_card("WILD CARD", "2")
-    
+
     suits = Cornucopia.get_suits_from_selected_deck("webapp")
 
     refute "Wild Card" in suits
@@ -200,20 +200,62 @@ defmodule Copi.CornucopiaLogicTest do
   test "jokers trump all other cards", %{game: game, p1: p1, p2: p2} do
     {:ok, joker} = create_card("Joker", "JokerA")
     {:ok, trump} = create_card("Cornucopia", "A")
-    
+
     d1 = play_card(p1, trump, 1)
     d2 = play_card(p2, joker, 1)
-    
+
     # Add votes
     Repo.insert!(%Copi.Cornucopia.Vote{dealt_card_id: d1.id, player_id: p1.id})
     Repo.insert!(%Copi.Cornucopia.Vote{dealt_card_id: d2.id, player_id: p2.id})
-    
+
     # Reload game
     game = Cornucopia.get_game!(game.id) |> Repo.preload(players: [dealt_cards: [:card, :votes]])
-    
+
     winner = Cornucopia.highest_scoring_card_in_round(game, 1)
-    
+
     # Joker should win
     assert winner.id == d2.id
   end
+
+  test "highest_scoring_card_in_round returns nil when no cards have enough votes",
+       %{game: game, p1: p1, p2: p2} do
+    {:ok, c1} = create_card("Authentication", "3")
+    {:ok, c2} = create_card("Authentication", "7")
+
+    # Play cards but add NO votes → scoring_cards filters all out → special_lead_cards([]) → nil path
+    play_card(p1, c1, 1)
+    play_card(p2, c2, 1)
+
+    game = Cornucopia.get_game!(game.id) |> Repo.preload(players: [dealt_cards: [:card, :votes]])
+
+    result = Cornucopia.highest_scoring_card_in_round(game, 1)
+    assert result == nil
+  end
+
+  test "lead suit wins when no trump or joker present", %{game: game, p1: p1, p2: p2} do
+    {:ok, c1} = create_card("Authentication", "3")
+    {:ok, c2} = create_card("Authentication", "8")
+
+    # p1 plays first (leads with Authentication), p2 follows
+    d1 = play_card(p1, c1, 1)
+    :timer.sleep(15)
+    d2 = play_card(p2, c2, 1)
+
+    # Add votes to both (2 players, need > 0.5 votes each)
+    Repo.insert!(%Copi.Cornucopia.Vote{dealt_card_id: d1.id, player_id: p1.id})
+    Repo.insert!(%Copi.Cornucopia.Vote{dealt_card_id: d2.id, player_id: p2.id})
+
+    game = Cornucopia.get_game!(game.id) |> Repo.preload(players: [dealt_cards: [:card, :votes]])
+
+    winner = Cornucopia.highest_scoring_card_in_round(game, 1)
+
+    # "8" ranks higher than "3" in card_order → d2 wins
+    assert winner.id == d2.id
+  end
+
+  test "highest_scoring_card_in_round returns nil when no cards played in game",
+       %{game: game} do
+    game = Cornucopia.get_game!(game.id) |> Repo.preload(players: [dealt_cards: [:card, :votes]])
+    assert Cornucopia.highest_scoring_card_in_round(game, 1) == nil
+  end
 end

copi.owasp.org/test/copi/cornucopia_test.exs

@@ -66,6 +66,39 @@ defmodule Copi.CornucopiaTest do
       game = game_fixture()
       assert %Ecto.Changeset{} = Cornucopia.change_game(game)
     end
+
+    test "Game.find/1 returns OK tuple for existing game" do
+      game = game_fixture()
+      assert {:ok, found} = Copi.Cornucopia.Game.find(game.id)
+      assert found.id == game.id
+    end
+
+    test "Game.find/1 returns error for non-existent game" do
+      assert {:error, :not_found} =
+               Copi.Cornucopia.Game.find("00000000000000000000000099")
+    end
+
+    test "Game.continue_vote_count/1 returns count of continue votes" do
+      alias Copi.Cornucopia.Game
+      game = game_fixture()
+      {:ok, reloaded} = Game.find(game.id)
+      assert Game.continue_vote_count(reloaded) == 0
+    end
+
+    test "Game.majority_continue_votes_reached?/1 returns true when votes exceed half" do
+      alias Copi.Cornucopia.Game
+      alias Copi.Repo
+      game = game_fixture()
+      {:ok, created_player} = Cornucopia.create_player(%{name: "p1", game_id: game.id})
+      {:ok, reloaded} = Game.find(game.id)
+      # 0 votes, 1 player → 0 > div(1,2)=0 → false
+      refute Game.majority_continue_votes_reached?(reloaded)
+      # Add a continue vote
+      Repo.insert!(%Copi.Cornucopia.ContinueVote{player_id: created_player.id, game_id: game.id})
+      {:ok, updated} = Game.find(game.id)
+      # 1 vote > div(1,2)=0 → true
+      assert Game.majority_continue_votes_reached?(updated)
+    end
   end
 
   describe "players" do

copi.owasp.org/test/copi/ip_helper_test.exs

@@ -170,9 +170,61 @@ defmodule Copi.IPHelperTest do
     test "handles malformed extract_first_ip inputs" do
       info = %{x_headers: [{"x-forwarded-for", "invalid"}]}
       assert IPHelper.get_ip_from_connect_info(info) == nil
-      
+
       info2 = %{x_headers: [{"other", "10.0.0.1"}]}
       assert IPHelper.get_ip_from_connect_info(info2) == nil
     end
+
+    test "extracts from req_headers with atom key tuples" do
+      info = %{req_headers: [{:"x-forwarded-for", "10.2.3.4"}]}
+      assert IPHelper.get_ip_from_connect_info(info) == {10, 2, 3, 4}
+    end
+
+    test "handles x_headers as raw binary string" do
+      info = %{x_headers: "10.8.9.1"}
+      assert IPHelper.get_ip_from_connect_info(info) == {10, 8, 9, 1}
+    end
+  end
+
+  describe "get_ip_from_socket/1 (LiveView) - additional coverage" do
+    test "extracts IP from connect_info map req_headers" do
+      socket = %Phoenix.LiveView.Socket{
+        private: %{
+          connect_info: %{
+            req_headers: [{"x-forwarded-for", "10.0.5.6"}]
+          }
+        }
+      }
+
+      assert IPHelper.get_ip_from_socket(socket) == {10, 0, 5, 6}
+    end
+
+    test "handles connect_info map with x_headers as binary string" do
+      socket = %Phoenix.LiveView.Socket{
+        private: %{
+          connect_info: %{x_headers: "10.7.8.9"}
+        }
+      }
+
+      assert IPHelper.get_ip_from_socket(socket) == {10, 7, 8, 9}
+    end
+
+    test "handles connect_info map with x_headers as string-keyed map" do
+      socket = %Phoenix.LiveView.Socket{
+        private: %{
+          connect_info: %{x_headers: %{"x-forwarded-for" => "10.1.2.3"}}
+        }
+      }
+
+      assert IPHelper.get_ip_from_socket(socket) == {10, 1, 2, 3}
+    end
+
+    test "falls back to localhost when connect_info map has no usable IP info" do
+      socket = %Phoenix.LiveView.Socket{
+        private: %{connect_info: %{no_headers: "foo"}}
+      }
+
+      assert IPHelper.get_ip_from_socket(socket) == {127, 0, 0, 1}
+    end
   end
 end

copi.owasp.org/test/copi/rate_limiter_test.exs

@@ -241,13 +241,41 @@ defmodule Copi.RateLimiterTest do
       # Should still work even with weird input
       assert {:ok, _} = RateLimiter.check_rate("invalid-ip", :game_creation)
     end
+
+    test "bypasses rate limit in production mode for localhost" do
+      Application.put_env(:copi, :env, :prod)
+
+      try do
+        result = RateLimiter.check_rate({127, 0, 0, 1}, :game_creation)
+        assert result == {:ok, :unlimited}
+      after
+        Application.put_env(:copi, :env, :test)
+      end
+    end
+
+    test "normalize_ip passes through non-tuple non-binary input" do
+      # Passing an integer (not a tuple or binary) hits the catch-all normalize_ip clause
+      assert {:ok, _} = RateLimiter.check_rate(12345, :game_creation)
+    end
   end
 
   describe "cleanup process" do
     test "rate limiter process is alive" do
       assert Process.whereis(Copi.RateLimiter) != nil
     end
 
+    test "handles :cleanup message gracefully" do
+      pid = Process.whereis(Copi.RateLimiter)
+      # Populate some state first
+      RateLimiter.check_rate({10, 20, 30, 40}, :game_creation)
+      # Directly send the cleanup message to trigger handle_info(:cleanup, state)
+      send(pid, :cleanup)
+      Process.sleep(50)
+      # Should still be healthy
+      assert Process.alive?(pid)
+      assert {:ok, _} = RateLimiter.check_rate({10, 20, 30, 41}, :game_creation)
+    end
+
     test "can make requests after clearing IP", %{ip: ip} do
       config = RateLimiter.get_config()
       limit = config.limits.connection

copi.owasp.org/test/copi_web/controllers/api_controller_test.exs

@@ -50,6 +50,14 @@ defmodule CopiWeb.ApiControllerTest do
     assert json_response(conn, 406)["error"] == "Card already played"
   end
 
+  test "play_card returns 404 when game not found", %{conn: conn} do
+    conn = put(conn, "/api/games/00000000000000000000000001/players/fakeplayer/card", %{
+      "dealt_card_id" => "999"
+    })
+
+    assert json_response(conn, 404)["error"] == "Could not find game"
+  end
+
   test "play_card fails if player already played in round", %{conn: conn, game: game, player: player, dealt_card: dealt_card} do
     # Create another card and mark it as played in this round (0 + 1 => 1)
     {:ok, card2} = Cornucopia.create_card(%{

copi.owasp.org/test/copi_web/controllers/card_controller_test.exs

@@ -43,5 +43,15 @@ defmodule CopiWeb.CardControllerTest do
     end
   end
 
+  describe "format_capec/1" do
+    test "returns refs unchanged" do
+      refs = ["1234", "5678"]
+      assert CopiWeb.CardController.format_capec(refs) == refs
+    end
+
+    test "returns empty list unchanged" do
+      assert CopiWeb.CardController.format_capec([]) == []
+    end
+  end
 
 end

copi.owasp.org/test/copi_web/live/game_live/create_game_form_test.exs

@@ -49,7 +49,7 @@ defmodule CopiWeb.GameLive.CreateGameFormTest do
 
     test "validation errors don't consume rate limit", %{conn: conn} do
       {:ok, view, _html} = live(conn, "/games/new")
-      
+
       # Submit invalid form (empty name triggers validation)
       html = view
         |> form("#game-form", game: %{name: "", edition: "webapp"})
@@ -65,5 +65,17 @@ defmodule CopiWeb.GameLive.CreateGameFormTest do
       # Successful creation redirects
       assert {:ok, _view, _html} = follow_redirect(result, conn)
     end
+
+    test "submit with invalid name hits changeset error path in save_game", %{conn: conn} do
+      {:ok, view, _html} = live(conn, "/games/new")
+
+      # Submit with empty name − passes HTML form but fails server-side validate_required
+      view
+        |> form("#game-form", game: %{name: "", edition: "webapp"})
+        |> render_submit()
+
+      # Form should still be present (no redirect on error)
+      assert has_element?(view, "#game-form")
+    end
   end
 end

copi.owasp.org/test/copi_web/live/game_live/show_test.exs

@@ -129,6 +129,43 @@ defmodule CopiWeb.GameLive.ShowTest do
       assert Show.card_played_in_round([], 1) == nil
     end
 
+    test "card_played_in_round/2 returns the matching card", %{conn: _conn, game: _game} do
+      alias CopiWeb.GameLive.Show
+      card = %{played_in_round: 3}
+      assert Show.card_played_in_round([%{played_in_round: 1}, %{played_in_round: 2}, card], 3) == card
+    end
+
+    test "redirects to /error when game_id is not found", %{conn: conn} do
+      assert {:error, {:redirect, %{to: "/error"}}} =
+               live(conn, "/games/00000000000000000000000001")
+    end
+
+    test "handle_params uses rounds_played directly for finished game", %{conn: conn, game: game} do
+      {:ok, finished_game} =
+        Cornucopia.update_game(game, %{
+          started_at: DateTime.truncate(DateTime.utc_now(), :second),
+          finished_at: DateTime.truncate(DateTime.utc_now(), :second),
+          rounds_played: 2
+        })
+
+      {:ok, _view, html} = live(conn, "/games/#{finished_game.id}")
+      assert html =~ finished_game.name
+    end
+
+    test "handle_info with non-matching topic is no-op", %{conn: conn, game: game} do
+      {:ok, show_live, _html} = live(conn, "/games/#{game.id}")
+      {:ok, updated_game} = Cornucopia.Game.find(game.id)
+
+      send(show_live.pid, %{
+        topic: "game:completely-different-id",
+        event: "game:updated",
+        payload: updated_game
+      })
+
+      :timer.sleep(50)
+      assert render(show_live) =~ game.name
+    end
+
     test "handle_info sets requested_round to rounds_played for finished game", %{conn: conn, game: game} do
       {:ok, finished_game} =
         Cornucopia.update_game(game, %{
@@ -146,8 +183,9 @@ defmodule CopiWeb.GameLive.ShowTest do
       })
 
       :timer.sleep(50)
-      # requested_round must be 3 (rounds_played), not 4 (rounds_played + 1)
-      assert :sys.get_state(show_live.pid).socket.assigns.requested_round == 3
+      # With the fix, requested_round = rounds_played = 3, so template shows "Viewing round"
+      # With the bug, requested_round = rounds_played + 1 = 4, so template shows "Round 4:"
+      assert render(show_live) =~ "Viewing round"
     end
   end
 end

copi.owasp.org/test/copi_web/live/player_live/form_component_test.exs

@@ -70,15 +70,19 @@ defmodule CopiWeb.PlayerLive.FormComponentTest do
 
     test "updates player successfully without rate limiting", %{conn: conn, game: game} do
       {:ok, player} = Cornucopia.create_player(%{name: "Original", game_id: game.id})
-      
+
       # Go to player show page which has Edit link
       {:ok, view, _html} = live(conn, "/games/#{game.id}/players/#{player.id}")
-      
+
       # Verify player name is displayed
       assert render(view) =~ "Original"
-      
+
       # Update should work without triggering rate limit (skipping this complex test)
       :ok
     end
+
+    test "FormComponent.topic/1 returns correct topic string", %{conn: _conn, game: _game} do
+      assert CopiWeb.PlayerLive.FormComponent.topic("abc123") == "game:abc123"
+    end
   end
 end