From 434d3a6171450b410dac4c48c2f8763015798caf Mon Sep 17 00:00:00 2001
From: Charles Betros <charles.betros@gmail.com>
Date: Fri, 21 Aug 2020 13:55:54 -0500
Subject: [PATCH] Add test for eventhandler

---
 .../Cosmos.Compiler.Tests.Bcl/Kernel.cs       |  3 +-
 .../System/EventsTest.cs                      | 36 +++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 Tests/Kernels/Cosmos.Compiler.Tests.Bcl/System/EventsTest.cs

diff --git a/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/Kernel.cs b/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/Kernel.cs
index ce2b0e66d..a566becf6 100644
--- a/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/Kernel.cs
+++ b/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/Kernel.cs
@@ -37,6 +37,7 @@ namespace Cosmos.Compiler.Tests.Bcl
                 BitConverterTest.Execute();
                 UnsafeCodeTest.Execute();
                 DelegatesTest.Execute();
+                EventsTest.Execute();
                 RandomTests.Execute();
 
                 // System.Collections
@@ -44,7 +45,7 @@ namespace Cosmos.Compiler.Tests.Bcl
 
                 // System.Collections.Generic
                 ListTest.Execute();
-                QueueTest.Execute();       
+                QueueTest.Execute();
                 DictionaryTest.Execute();
 
                 // System.Text
diff --git a/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/System/EventsTest.cs b/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/System/EventsTest.cs
new file mode 100644
index 000000000..95f6ee3f2
--- /dev/null
+++ b/Tests/Kernels/Cosmos.Compiler.Tests.Bcl/System/EventsTest.cs
@@ -0,0 +1,36 @@
+using System;
+using Cosmos.TestRunner;
+
+namespace Cosmos.Compiler.Tests.Bcl.System
+{
+    internal class TestClass
+    {
+        private static bool handlerInvoked;
+
+        public event EventHandler EventFired = (sender, args) =>
+        {
+            handlerInvoked = true;
+        };
+
+        private void OnEventFired(EventArgs e)
+        {
+            EventHandler handler = EventFired;
+            handler?.Invoke(this, e);
+        }
+
+        public bool ExecuteTest()
+        {
+            OnEventFired(null);
+            return handlerInvoked;
+        }
+    }
+
+    public class EventsTest
+    {
+        public static void Execute()
+        {
+            var test = new TestClass();
+            Assert.IsTrue(test.ExecuteTest(), "Event handler was not invoked.");
+        }
+    }
+}