diff --git a/ICD.Common.Utils.Tests/SafeCriticalSectionTest.cs b/ICD.Common.Utils.Tests/SafeCriticalSectionTest.cs
new file mode 100644
index 0000000..0485cdd
--- /dev/null
+++ b/ICD.Common.Utils.Tests/SafeCriticalSectionTest.cs
@@ -0,0 +1,65 @@
+using NUnit.Framework;
+
+namespace ICD.Common.Utils.Tests
+{
+	[TestFixture]
+    public sealed class SafeCriticalSectionTest
+    {
+		[Test]
+		public void ExecuteTest()
+		{
+			bool result = false;
+
+			SafeCriticalSection section = new SafeCriticalSection();
+			section.Execute(() => result = true);
+
+			Assert.IsTrue(result);
+		}
+
+		[Test]
+		public void ExecuteReturnTest()
+		{
+			SafeCriticalSection section = new SafeCriticalSection();
+			Assert.IsTrue(section.Execute(() => true));
+		}
+
+		[Test]
+		public void EnterTest()
+		{
+			Assert.Inconclusive();
+		}
+
+		[Test]
+		public void LeaveTest()
+		{
+			Assert.Inconclusive();
+		}
+
+		[Test]
+		public void TryEnterTest()
+		{
+			int result = 0;
+
+			SafeCriticalSection section = new SafeCriticalSection();
+			section.Enter();
+
+			// ReSharper disable once NotAccessedVariable
+			object handle = ThreadingUtils.SafeInvoke(() => { result = section.TryEnter() ? 0 : 1; });
+			ThreadingUtils.Sleep(1000);
+
+			Assert.AreEqual(1, result);
+
+			section.Leave();
+
+			// ReSharper disable once RedundantAssignment
+			handle = ThreadingUtils.SafeInvoke(() =>
+			{
+				result = section.TryEnter() ? 2 : 0;
+				section.Leave();
+			});
+			ThreadingUtils.Sleep(1000);
+
+			Assert.AreEqual(2, result);
+		}
+	}
+}
diff --git a/ICD.Common.Utils.Tests/ThreadingUtilsTest.cs b/ICD.Common.Utils.Tests/ThreadingUtilsTest.cs
new file mode 100644
index 0000000..9caa5f3
--- /dev/null
+++ b/ICD.Common.Utils.Tests/ThreadingUtilsTest.cs
@@ -0,0 +1,41 @@
+using System;
+using NUnit.Framework;
+
+namespace ICD.Common.Utils.Tests
+{
+	[TestFixture]
+    public sealed class ThreadingUtilsTest
+    {
+		[Test]
+		public void Sleep()
+		{
+			DateTime now = IcdEnvironment.GetLocalTime();
+			ThreadingUtils.Sleep(1000);
+			DateTime now2 = IcdEnvironment.GetLocalTime();
+
+			Assert.AreEqual(1000, (now2 - now).TotalMilliseconds, 100);
+		}
+
+		[Test]
+		public void SafeInvokeTest()
+		{
+			bool result = false;
+			ThreadingUtils.SafeInvoke(() => result = true);
+
+			Assert.IsFalse(result);
+			ThreadingUtils.Sleep(1000);
+			Assert.IsTrue(result);
+		}
+
+		[Test]
+		public void SafeInvokeParamTest()
+		{
+			bool result = false;
+			ThreadingUtils.SafeInvoke(p => result = p, true);
+
+			Assert.IsFalse(result);
+			ThreadingUtils.Sleep(1000);
+			Assert.IsTrue(result);
+		}
+	}
+}