title: The Unit Test does not see my methods
body: <p>I created a unit Test project for my CalculatorApp and added the app as a reference for my UniTest Project </p>
  
  <p>My code looks like this:</p>
  
  <pre><code>using System;
  using Microsoft.VisualStudio.TestTools.UnitTesting;
  using CalculatorApp;
  
  
      namespace CalculatorUnitTests
      {
          [TestClass]
          public class UnitTest1
          {
              [TestMethod]
              public void TestAddMethod()
              {
                  decimal firstTestNumber = 7;
                  decimal secondTestNumber = 3;
                  decimal resultTest = 10;
  
  
                  Assert.AreEqual(resultTest, AddMethod(firstTestNumber, secondTestNumber));
  
              }
      }
  </code></pre>
  
  <p>But it says that AddMethod does not exist in the current context. </p>
  
  <p>What am I missing? (i don't have much experience with unitTests)
  I am using Visual Studio Community 2015. </p>