Add Squeezenet Test and set up for running samples test on azure devops (#42)

This change includes Squeezenet Samples test (CS project) using kitten image.
Both squeezenet test and mnist test will be run with vstest with MSTest adapter.

Testing/SamplesTest/SamplesTest/MnistTest.cs

@@ -13,7 +13,7 @@ using OpenQA.Selenium.Remote;
 // up to OpenQA.Selenium.Interactions and this alias can simply be removed.
 using PointerInputDevice = OpenQA.Selenium.Appium.Interactions.PointerInputDevice;
 
-namespace SamplesTest
+namespace MnistTest
 {
     public class MnistSession
     {

Testing/SamplesTest/SamplesTest/SamplesTest.csproj

@@ -44,6 +44,7 @@
   <ItemGroup>
     <Compile Include="MnistTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="SqueezenetTest.cs" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Appium.WebDriver">

Testing/SamplesTest/SamplesTest/SqueezenetTest.cs

@@ -0,0 +1,89 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenQA.Selenium.Appium.Interactions;
+using OpenQA.Selenium.Appium.Windows;
+using OpenQA.Selenium;
+using OpenQA.Selenium.Remote;
+
+// Define an alias to OpenQA.Selenium.Appium.Interactions.PointerInputDevice to hide
+// inherited OpenQA.Selenium.Interactions.PointerInputDevice that causes ambiguity.
+// In the future, all functions of OpenQA.Selenium.Appium.Interactions should be moved
+// up to OpenQA.Selenium.Interactions and this alias can simply be removed.
+using PointerInputDevice = OpenQA.Selenium.Appium.Interactions.PointerInputDevice;
+
+namespace SamplesTest
+{
+    public class SqueezenetSession
+    {
+        private const string WindowsApplicationDriverUrl = "http://127.0.0.1:4723";
+        // This string key is present in RegisteredUserModeAppID under AppX/vs.appxrecipe
+        // TODO: this string value has to be retrieved from local test machine
+        // More information on https://github.com/Microsoft/WinAppDriver
+        private const string SqueezenetAppId = "9B904DD1-22BF-4715-A2D3-B0F44457074A_qzvbm97bn12kp!App";
+
+        protected static WindowsDriver<WindowsElement> session;
+
+        public static void Setup(TestContext context)
+        {
+            if (session == null)
+            {
+                DesiredCapabilities appCapabilities = new DesiredCapabilities();
+                appCapabilities.SetCapability("app", SqueezenetAppId);
+                appCapabilities.SetCapability("deviceName", "WindowsPC");
+                session = new WindowsDriver<WindowsElement>(new Uri(WindowsApplicationDriverUrl), appCapabilities);
+                Assert.IsNotNull(session);
+                // Set implicit timeout to 1.5 seconds to make element search to retry every 500 ms for at most three times
+                session.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(1.5);
+            }
+        }
+
+        public static void TearDown()
+        {
+            if (session != null)
+            {
+                session.Quit();
+                session = null;
+            }
+        }
+    }
+
+    [TestClass]
+    public class SqueezenetTest : SqueezenetSession
+    {
+        private static WindowsElement loadModelButton;
+        private static WindowsElement pickImageButton;
+        private static WindowsElement resetButton;
+        private static WindowsElement statusBlock;
+
+        [ClassInitialize]
+        public static void ClassInitialize(TestContext context)
+        {
+            Setup(context);
+            loadModelButton = session.FindElementByName("Load model");
+            pickImageButton = session.FindElementByName("Pick image");
+            resetButton = session.FindElementByName("Reset");
+            statusBlock = session.FindElementByAccessibilityId("StatusBlock");
+        }
+
+        [TestMethod]
+        public void TestTabbyCat()
+        {
+            string tabbyCatPath = System.AppDomain.CurrentDomain.BaseDirectory + "\\kitten_224.png";
+            resetButton.Click();
+            System.Threading.Thread.Sleep(100);
+            loadModelButton.Click();
+            // wait for model to load
+            System.Threading.Thread.Sleep(2000);
+            pickImageButton.Click();
+            // wait for file picker window to pop up
+            System.Threading.Thread.Sleep(3000);
+            session.Keyboard.SendKeys(tabbyCatPath);
+            session.Keyboard.SendKeys(Keys.Enter);
+            System.Threading.Thread.Sleep(1000);
+            string result = statusBlock.Text;
+            Assert.IsTrue(result.Contains("\"tabby, tabby cat\" with confidence of 0.93"));
+        }
+    }
+}