Use an interface for AlpacaActivity and add date checks to tests.

test/alpaca.test.ts

@@ -43,8 +43,21 @@ describe('Alpaca Tests', () => {
 
     const response = await exchange.actionProvider.fetchActions(fetchOptions);
 
+    expect(response).toBeDefined();
+
     logger.info(JSON.stringify(response));
 
-    await expect(exchange.actionProvider.fetchActions(fetchOptions)).resolves.toBeDefined();
+    for (const action of response.actions) {
+      expect(action).toBeDefined();
+      expect(action.symbol).toBeDefined();
+      expect(action.quantity).toBeDefined();
+      expect(action.side).toBeDefined();
+      expect(action.pricePerShare).toBeDefined();
+
+      expect(action.timestamp).toBeDefined();
+      expect(action.timestamp.getFullYear()).toBe(2023);
+      expect(action.timestamp.getMonth()).toBe(9);
+      expect(action.timestamp.getDate()).toBe(23);
+    }
   }, timeout);
 });