Restore SEBPatch

SafeExamBrowser.Applications.UnitTests/ExternalApplicationWindowTests.cs

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+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using SafeExamBrowser.Core.Contracts.Resources.Icons;
+using SafeExamBrowser.WindowsApi.Contracts;
+
+namespace SafeExamBrowser.Applications.UnitTests
+{
+	[TestClass]
+	public class ExternalApplicationWindowTests
+	{
+		private IntPtr handle;
+		private NativeIconResource icon;
+		private Mock<INativeMethods> nativeMethods;
+
+		private ExternalApplicationWindow sut;
+
+		[TestInitialize]
+		public void Initialize()
+		{
+			handle = new IntPtr(123);
+			icon = new NativeIconResource();
+			nativeMethods = new Mock<INativeMethods>();
+
+			sut = new ExternalApplicationWindow(icon, nativeMethods.Object, handle);
+		}
+
+		[TestMethod]
+		public void Activate_MustCorrectlyActivateWindow()
+		{
+			sut.Activate();
+			nativeMethods.Verify(n => n.ActivateWindow(It.Is<IntPtr>(h => h == handle)));
+		}
+
+		[TestMethod]
+		public void Update_MustCorrectlyUpdateWindow()
+		{
+			var iconChanged = false;
+			var titleChanged = false;
+
+			nativeMethods.Setup(m => m.GetWindowIcon(It.IsAny<IntPtr>())).Returns(new IntPtr(456));
+			nativeMethods.Setup(m => m.GetWindowTitle((It.IsAny<IntPtr>()))).Returns("Some New Window Title");
+
+			sut.IconChanged += (_) => iconChanged = true;
+			sut.TitleChanged += (_) => titleChanged = true;
+
+			sut.Update();
+
+			nativeMethods.Verify(m => m.GetWindowIcon(handle), Times.Once);
+			nativeMethods.Verify(m => m.GetWindowTitle(handle), Times.Once);
+
+			Assert.IsTrue(iconChanged);
+			Assert.IsTrue(titleChanged);
+		}
+	}
+}