From fd0f96cd924cbdf8312ffa75f153ce74185c4580 Mon Sep 17 00:00:00 2001
From: Owen <owenrees.dev@gmail.com>
Date: Tue, 11 Aug 2026 22:02:34 +0200
Subject: [PATCH] add cache tests

---
 test/chesstrainer/cache_test.exs | 39 ++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 test/chesstrainer/cache_test.exs

diff --git a/test/chesstrainer/cache_test.exs b/test/chesstrainer/cache_test.exs
new file mode 100644
index 0000000..1de00d8
--- /dev/null
+++ b/test/chesstrainer/cache_test.exs
@@ -0,0 +1,39 @@
+defmodule Chesstrainer.CacheTest do
+  use ExUnit.Case, async: true
+
+  alias Chesstrainer.Cache
+
+  setup do
+    table = :"test_#{System.unique_integer([:positive])}"
+    {:ok, pid} = Cache.start_link(table)
+    on_exit(fn -> if Process.alive?(pid), do: GenServer.stop(pid) end)
+    {:ok, %{pid: pid, table: table}}
+  end
+
+  describe "ChessTrainer.Cache function tests" do
+    test "cache is started", %{pid: pid, table: table} do
+      assert is_pid(pid)
+      assert 0 = Cache.size(table)
+    end
+
+    test "put/3", %{table: table} do
+      assert :ok = Cache.put(table, "key1", "value1")
+      assert {:ok, "value1"} = Cache.get(table, "key1")
+      assert 1 = Cache.size(table)
+
+      assert :ok = Cache.put(table, "key2", "value2")
+      assert {:ok, "value2"} = Cache.get(table, "key2")
+      assert 2 = Cache.size(table)
+    end
+
+    test "delete/2", %{table: table} do
+      assert :ok = Cache.put(table, "key1", "value1")
+      assert :ok = Cache.put(table, "key2", "value2")
+      assert 2 = Cache.size(table)
+
+      assert :ok = Cache.delete(table, "key1")
+      assert 1 = Cache.size(table)
+      assert :error = Cache.get(table, "key1")
+    end
+  end
+end