Implemented Telemetry class via an interface for test ease

test/dotnet.Tests/TelemetryCommandTest.cs

@@ -0,0 +1,35 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.IO;
+using Microsoft.DotNet.Cli.Utils;
+using Microsoft.DotNet.Tools.Test.Utilities;
+using Xunit;
+using FluentAssertions;
+
+namespace Microsoft.DotNet.Tests
+{
+    public class MockTelemetry : ITelemetry
+    {
+        public string EventName{get;set;}
+        public void TrackEvent(string eventName, IDictionary<string, string> properties, IDictionary<string, double> measurements)
+        {
+            EventName = eventName;
+        }
+    }
+
+
+    public class TelemetryCommandTests : TestBase
+    {
+        [Fact]
+        public void TestProjectDependencyIsNotAvailableThroughDriver()
+        {
+            Program program = new Program();
+            MockTelemetry mockTelemetry = new MockTelemetry();
+            string[] args = { "help" };
+            program.ProcessArgs(args, mockTelemetry);
+            Assert.Equal(mockTelemetry.EventName, args[0]);
+        }
+    }
+}