test: add integration test

test/integration.exs

@@ -0,0 +1,59 @@
+defmodule MockHandler do
+  @behaviour ExTwelveData.RealTimePrices.Handler
+
+  require Logger
+
+  @impl true
+  def handle_price_update(price) do
+    Logger.info(price)
+  end
+end
+
+{:ok, pid} =
+  ExTwelveData.RealTimePrices.start_link(
+    api_key: System.fetch_env!("TWELVE_DATA_API_KEY"),
+    handler: MockHandler
+  )
+
+alias ExTwelveData.RealTimePrices.SubscriptionsManager
+
+defmodule MockProvider do
+  alias ExTwelveData.Symbol
+  @behaviour SubscriptionsManager.Provider
+
+  require Logger
+
+  @impl true
+  def get_symbols() do
+    new =
+      MapSet.new(
+        Enum.random([
+          [
+            %Symbol{exchange: "Euronext", symbol: "SLBEN"},
+            %Symbol{mic_code: "XPAR", symbol: "ALMIL"},
+            %Symbol{type: "Index", symbol: "IXIC"}
+          ],
+          [
+            %Symbol{mic_code: "XDUS", symbol: "ADS"},
+            %Symbol{mic_code: "XFRA", symbol: "MQ1"},
+            %Symbol{type: "Index", symbol: "VFIAX"}
+          ]
+        ])
+      )
+
+    Logger.warning(new)
+
+    new
+  end
+end
+
+SubscriptionsManager.start_link(
+  pid: pid,
+  provider: MockProvider,
+  max_subscriptions: 8,
+  symbols_extended: true
+)
+
+# ["AAPL", "MSFT", "GOOG"],
+# ["TSLA", "MSFT", "ABML"],
+# ["IXIC", "VFIAX", "QQQ"]