Added ViewModelTest

Author: peetery

ConcurrentProgramming.sln

@@ -19,6 +19,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ViewModel", "ViewModel\View
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ModelTest", "ModelTest\ModelTest.csproj", "{657654E1-24E6-441D-A97E-61BD723DA688}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ViewModelTest", "ViewModelTest\ViewModelTest.csproj", "{645ED22D-4434-4FAA-AEC8-09B5B5144C3D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -57,6 +59,10 @@ Global
 		{657654E1-24E6-441D-A97E-61BD723DA688}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{657654E1-24E6-441D-A97E-61BD723DA688}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{657654E1-24E6-441D-A97E-61BD723DA688}.Release|Any CPU.Build.0 = Release|Any CPU
+		{645ED22D-4434-4FAA-AEC8-09B5B5144C3D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{645ED22D-4434-4FAA-AEC8-09B5B5144C3D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{645ED22D-4434-4FAA-AEC8-09B5B5144C3D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{645ED22D-4434-4FAA-AEC8-09B5B5144C3D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ViewModel/MainWindowViewModel.cs

@@ -63,13 +63,13 @@ public int viewWidth
             get { return _width; }
         }
 
-        private async void CreateHandler()
+        public async void CreateHandler()
         {
             ballsGroup = _modelLayer.createBalls(_ballsAmount, 25);
             await Task.Run(() => _modelLayer.StartSimulation());
         }
 
-        private void StopHandler()
+        public void StopHandler()
         {
             _modelLayer.StopSimulation();
         }

ViewModelTest/UnitTest1.cs

@@ -0,0 +1,93 @@
+using Logic;
+using Model;
+using System.Collections.ObjectModel;
+using ViewModel;
+
+namespace ViewModelTest
+{
+    public class MainWindowViewModelTests
+    {
+        private class ModelMockClass : ModelAbstractAPI
+        {
+            public int StartSimulationCallCount { get; set; }
+            public int StopSimulationCallCount { get; set; }
+            public int CreateBallsCallCount { get; set; }
+            public override int Width => 500;
+            public override int Height => 500;
+
+            public override ObservableCollection<BallLogic> createBalls(int amount, int radius)
+            {
+                CreateBallsCallCount++;
+                return new ObservableCollection<BallLogic>();
+            }
+
+            public override void StartSimulation()
+            {
+                StartSimulationCallCount++;
+            }
+
+            public override void StopSimulation()
+            {
+                StopSimulationCallCount++;
+            }
+        }
+
+        [Test]
+        public void CreateHandler_StartsSimulationTest()
+        {
+            var mockModel = new ModelMockClass();
+            var viewModel = new MainWindowViewModel(mockModel);
+            viewModel.ballsAmount = 5;
+
+            viewModel.CreateHandler();
+
+            Assert.AreEqual(1, mockModel.CreateBallsCallCount);
+            Assert.AreEqual(1, mockModel.StartSimulationCallCount);
+        }
+
+        [Test]
+        public void StopHandler_StopsSimulationTest()
+        {
+            var mockModel = new ModelMockClass();
+            var viewModel = new MainWindowViewModel(mockModel);
+
+            viewModel.StopHandler();
+
+            Assert.AreEqual(1, mockModel.StopSimulationCallCount);
+        }
+
+        [Test]
+        public void BallsGroup_Setter_RaisesPropertyChangedEventTest()
+        {
+            var mockModel = new ModelMockClass();
+            var viewModel = new MainWindowViewModel(mockModel);
+
+            bool eventRaised = false;
+            viewModel.PropertyChanged += (sender, args) =>
+            {
+                if (args.PropertyName == "ballsGroup")
+                    eventRaised = true;
+            };
+
+            viewModel.ballsGroup = new ObservableCollection<BallLogic>();
+            Assert.IsTrue(eventRaised);
+        }
+
+        [Test]
+        public void BallsAmount_Setter_RaisesPropertyChangedEventTest()
+        {
+            var mockModel = new ModelMockClass();
+            var viewModel = new MainWindowViewModel(mockModel);
+
+            bool eventRaised = false;
+            viewModel.PropertyChanged += (sender, args) =>
+            {
+                if (args.PropertyName == "ballsAmount")
+                    eventRaised = true;
+            };
+
+            viewModel.ballsAmount = 10;
+            Assert.IsTrue(eventRaised);
+        }
+    }
+}

ViewModelTest/ViewModelTest.cs

@@ -17,6 +17,11 @@
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <ProjectReference Include="..\Model\Model.csproj" />
+    <ProjectReference Include="..\ViewModel\ViewModel.csproj" />
+  </ItemGroup>
+
   <ItemGroup>
     <Using Include="NUnit.Framework" />
   </ItemGroup>