Brian Hartsock's Blog

[Cmdlet("Get", "Service", DefaultParameterSetName="Default")]
public sealed class GetServiceCommand : MultipleServiceCommandBase
{
    // Methods
    public GetServiceCommand();
    protected override void ProcessRecord();
 
    // Properties
    [Parameter(Position=0, 
          ParameterSetName="Default", 
          ValueFromPipelineByPropertyName=true, 
          ValueFromPipeline=true),
     Alias(new string[] { "ServiceName" })]
    public string[] Name { get; set; }
}

 
[Test]
public void Get_Service_with_single_string_in_pipeline() 
{
    // "MySQL" | get-service
 
    var name = "MySQL";
 
    var pipeline = Runspace.CreatePipeline();
 
    pipeline.Input.Write(name);
    pipeline.Commands.Add("get-service");
 
    var result = pipeline.Invoke();
 
    AssertThatPipelineResultIsService(result, name);
}
 
[Test]
public void Get_Service_with_single_object_in_pipeline_using_Name_property()
{
    //New-Object PSObject | Add-Member NoteProperty Name "MySQL" -PassThru | get-service
 
    var name = "MySQL";
 
    var pipeline = Runspace.CreatePipeline();
 
    pipeline.Input.Write(new { Name = name });
    pipeline.Commands.Add("get-service");
 
    var result = pipeline.Invoke();
 
    AssertThatPipelineResultIsService(result, name);
}
 
[Test]
public void Get_Service_with_single_object_in_pipeline_using_ServiceName_property()
{
    //New-Object PSObject | Add-Member NoteProperty ServiceName "MySQL" -PassThru | get-service
 
    var name = "MySQL";
 
    var pipeline = Runspace.CreatePipeline();
 
    pipeline.Input.Write(new { ServiceName = name });
    pipeline.Commands.Add("get-service");
 
    var result = pipeline.Invoke();
 
    AssertThatPipelineResultIsService(result, name);
}
 
private void AssertThatPipelineResultIsService(Collection<PSObject> result, string name)
{
    Assert.That(result.Count == 1);
    Assert.That(result[0].BaseObject is ServiceController);
    Assert.That((result[0].BaseObject as ServiceController).ServiceName == name);
}