Added Unit Tests

build.ps1

@@ -3,42 +3,33 @@
 # Set the configuration
 $Configuration = "Release"
 
-# Find MSBuild
-$msbuildPath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2019\BuildTools\MSBuild\Current\Bin\MSBuild.exe"
-if (-not (Test-Path $msbuildPath)) {
-    $msbuildPath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe"
-}
-if (-not (Test-Path $msbuildPath)) {
-    $msbuildPath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\MSBuild.exe"
-}
-if (-not (Test-Path $msbuildPath)) {
-    $msbuildPath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe"
-}
-if (-not (Test-Path $msbuildPath)) {
-    # Try to find MSBuild in the PATH
-    $msbuildPath = "MSBuild.exe"
+# Check if dotnet CLI is available
+$dotnetPath = Get-Command dotnet -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Source
+if (-not $dotnetPath) {
+    Write-Host "The .NET SDK is not installed or not in the PATH. Please install the .NET SDK." -ForegroundColor Red
+    exit 1
 }
 
 # Clean the solution
 Write-Host "Cleaning solution..." -ForegroundColor Cyan
-& $msbuildPath WindowsNotifications.sln /t:Clean /p:Configuration=$Configuration
+dotnet clean WindowsNotifications.sln --configuration $Configuration
 
 # Restore NuGet packages
 Write-Host "Restoring NuGet packages..." -ForegroundColor Cyan
-& $msbuildPath WindowsNotifications.sln /t:Restore /p:Configuration=$Configuration
+dotnet restore WindowsNotifications.sln
 
 # Build the solution
 Write-Host "Building solution..." -ForegroundColor Cyan
-& $msbuildPath WindowsNotifications.sln /t:Build /p:Configuration=$Configuration
+dotnet build WindowsNotifications.sln --configuration $Configuration --no-restore
 
 # Check if the build was successful
 if ($LASTEXITCODE -eq 0) {
     Write-Host "Build completed successfully!" -ForegroundColor Green
-    
+
     # Show the output directory
     $outputDir = Join-Path -Path $PSScriptRoot -ChildPath "WindowsNotifications\bin\$Configuration"
     Write-Host "Output directory: $outputDir" -ForegroundColor Yellow
-    
+
     # List the files in the output directory
     Get-ChildItem -Path $outputDir | Format-Table Name, Length
 } else {