Implement enhanced PowerShell cmdlets with async handler, WebSocket, TLS, and more features

Co-authored-by: chkr1011 <6939810+chkr1011@users.noreply.github.com>

Source/MQTTnet.PowerShell/Test.ps1

@@ -1,15 +1,117 @@
+# MQTTnet PowerShell Module Test Script
+# This script demonstrates the usage of the MQTTnet PowerShell module
+
 Import-Module ./bin/Debug/net8.0/MQTTnet.PowerShell.dll
 
+Write-Host "=== MQTTnet PowerShell Module Test ===" -ForegroundColor Cyan
+
+# Example 1: Basic TCP connection
+Write-Host "`n1. Testing basic TCP connection..." -ForegroundColor Yellow
 $session = New-MqttSession
 
-Connect-MqttSession -Session $session -Host "192.168.1.16"
+try {
+    Connect-MqttSession -Session $session -Host "broker.hivemq.com" -Port 1883
+    Write-Host "Connected successfully!" -ForegroundColor Green
+    
+    # Get session status
+    Write-Host "`n2. Getting session status..." -ForegroundColor Yellow
+    $status = Get-MqttSessionStatus -Session $session
+    Write-Host "IsConnected: $($status.IsConnected)" -ForegroundColor Green
+    
+    # Example 2: Publish a simple message
+    Write-Host "`n3. Publishing a simple message..." -ForegroundColor Yellow
+    Publish-MqttMessage -Session $session -Topic "test/powershell" -Payload "Hello from PowerShell!"
+    Write-Host "Message published!" -ForegroundColor Green
+    
+    # Example 3: Publish with user properties
+    Write-Host "`n4. Publishing with user properties..." -ForegroundColor Yellow
+    $properties = @{
+        "source" = "PowerShell"
+        "version" = "1.0"
+    }
+    Publish-MqttMessage -Session $session -Topic "test/powershell/advanced" -Payload "Advanced message" -UserProperties $properties -QoS 1
+    Write-Host "Message with properties published!" -ForegroundColor Green
+    
+    # Example 4: Subscribe and receive messages
+    Write-Host "`n5. Subscribing to topics..." -ForegroundColor Yellow
+    Subscribe-MqttTopic -Session $session -Topic "test/demo"
+    Write-Host "Subscribed to test/demo" -ForegroundColor Green
+    
+    # Example 5: Register a message handler
+    Write-Host "`n6. Registering message handler..." -ForegroundColor Yellow
+    Register-MqttMessageHandler -Session $session -Action {
+        param($topic, $payload, $message)
+        Write-Host "Received message on topic: $topic" -ForegroundColor Cyan
+        Write-Host "Payload: $payload" -ForegroundColor White
+        Write-Host "QoS: $($message.QoS)" -ForegroundColor White
+    }
+    Write-Host "Handler registered!" -ForegroundColor Green
+    
+    # Publish a test message that the handler will receive
+    Write-Host "`n7. Publishing test message for handler..." -ForegroundColor Yellow
+    Publish-MqttMessage -Session $session -Topic "test/demo" -Payload "Test message for handler"
+    Start-Sleep -Seconds 2
+    
+    # Example 6: Unsubscribe
+    Write-Host "`n8. Unsubscribing from topic..." -ForegroundColor Yellow
+    Unsubscribe-MqttTopic -Session $session -Topic "test/demo"
+    Write-Host "Unsubscribed!" -ForegroundColor Green
+    
+    # Example 7: Clean disconnect
+    Write-Host "`n9. Disconnecting..." -ForegroundColor Yellow
+    Disconnect-MqttSession -Session $session
+    Write-Host "Disconnected!" -ForegroundColor Green
+}
+catch {
+    Write-Host "Error: $_" -ForegroundColor Red
+}
+finally {
+    # Cleanup
+    Remove-MqttSession -Session $session
+    Write-Host "`nSession cleaned up!" -ForegroundColor Green
+}
 
-Publish-MqttMessage -Session $session  -Topic "Test" -Payload "Hello from PowerShell"
+Write-Host "`n=== WebSocket Connection Example ===" -ForegroundColor Cyan
 
-Subscribe-MqttTopic -Session $session -Topic "test/demo"
+# Example 8: WebSocket connection
+Write-Host "`nTesting WebSocket connection..." -ForegroundColor Yellow
+$wsSession = New-MqttSession
 
-Receive-MqttMessage -Session $session -TimeoutSeconds 200
+try {
+    Connect-MqttSession -Session $wsSession -WebSocketUri "broker.hivemq.com:8000/mqtt"
+    Write-Host "Connected via WebSocket!" -ForegroundColor Green
+    
+    Publish-MqttMessage -Session $wsSession -Topic "test/websocket" -Payload "Hello via WebSocket!"
+    Write-Host "Message published via WebSocket!" -ForegroundColor Green
+    
+    Disconnect-MqttSession -Session $wsSession
+}
+catch {
+    Write-Host "WebSocket Error: $_" -ForegroundColor Red
+}
+finally {
+    Remove-MqttSession -Session $wsSession
+}
 
-Disconnect-MqttSession -Session $session
-Remove-MqttSession -Session $session
+Write-Host "`n=== Connection with Will Message Example ===" -ForegroundColor Cyan
+
+# Example 9: Connection with Last Will Testament
+Write-Host "`nTesting connection with Will message..." -ForegroundColor Yellow
+$willSession = New-MqttSession
+
+try {
+    Connect-MqttSession -Session $willSession -Host "broker.hivemq.com" `
+        -WillTopic "test/will" -WillPayload "Client disconnected unexpectedly" -WillQoS 1 -WillRetain
+    Write-Host "Connected with Will message configured!" -ForegroundColor Green
+    
+    Disconnect-MqttSession -Session $willSession
+}
+catch {
+    Write-Host "Will Error: $_" -ForegroundColor Red
+}
+finally {
+    Remove-MqttSession -Session $willSession
+}
+
+Write-Host "`n=== All tests completed ===" -ForegroundColor Cyan