Robot_Adapter_Tests: incorrect verification in `PushBarsWithTagTwice()`

[alelom]

Description:

While writing some documentation, I noticed that the test method PushBarsWithTagTwice() seems to be doing a wrong verification. I believe that the assertions should be:

    pulledBars.Count.ShouldBe(count, "Bars storing the tag has not been correctly replaced.");
    pulledNodes.Count.ShouldBe(count * 2, "Node storing the tag has not been correctly replaced.");

instead of:

    pulledBars.Count.ShouldBe(bars.Count, "Bars storing the tag has not been correctly replaced.");
    pulledNodes.Count.ShouldBe(bars.Count* 2, "Node storing the tag has not been correctly replaced.");

@IsakNaslundBh (the author of the test) should verify whether this assumption is correct or not?

As a side note, I believe that the structure of the test could be refactored so we can reflect the good practice of splitting in "Arrange, Act, Assert", for example as follows:

[Test]
[Description("Tests that pushing a new set of Bars with the same push tag correctly replaces previous pushed bars and nodes with the same tag.")]
public void PushBarsWithTagTwice()
{
    // Arrange. Create two sets of 3 bars.
    int count = 3;
    List<Bar> bars1 = new List<Bar>();
    List<Bar> bars2 = new List<Bar>();
    for (int i = 0; i < count; i++)
    {
        bars1.Add(Engine.Base.Create.RandomObject(typeof(Bar), i) as Bar);
    }

    for (int i = 0; i < count; i++)
    {
        bars2.Add(Engine.Base.Create.RandomObject(typeof(Bar), i + count) as Bar);
    }

    // Act. Push both the sets of bars. Note that the second set of bars is pushed with the same tag as the first set of bars.
    m_Adapter.Push(bars1, "TestTag");
    m_Adapter.Push(bars2, "TestTag");

    // Act. Pull the bars and the nodes.
    List<Bar> pulledBars = m_Adapter.Pull(new FilterRequest { Type = typeof(Bar) }).Cast<Bar>().ToList();
    List<Node> pulledNodes = m_Adapter.Pull(new FilterRequest { Type = typeof(Node) }).Cast<Node>().ToList();

    // Assert. Verify that the count of the pulled bars is only 3, meaning that the second set of bars has overridden the first set of bars.
    pulledBars.Count.ShouldBe(bars.Count, "Bars storing the tag has not been correctly replaced.");

    // Assert. Verify that the count of the pulled nodes is only 6, meaning that the second set of bars has overridden the first set of bars.
    pulledNodes.Count.ShouldBe(bars.Count * 2, "Node storing the tag has not been correctly replaced.");
}