public void DeleteElement_NullElement_ExpectArgumentNullException()
{
//Arrange
var modelProblem = new ModelProblem("problem");
//Act
//Assert
Assert.Throws <ArgumentNullException>(() => modelProblem.DeleteElement(null));
}
public void DeleteElement_ElementDoesNotExistInProblem_ExpectNothingHappens()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var otherProblem = new ModelProblem("otherProblem");
var strayElement = new ModelBarElement(otherProblem, 1234, new ModelNode(otherProblem, 123), new ModelNode(otherProblem, 1234));
//Act
modelProblem.DeleteElement(strayElement);
//Assert
Assert.That(modelProblem.Elements, Is.Empty);
}
public void DeleteElement_ElementDoesExistInProblem_ExpectElementMaterialRemovedFromCollection()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var origin = modelProblem.AddNode();
var destination = modelProblem.AddNode();
var element = modelProblem.AddElement(origin, destination);
//Act
modelProblem.DeleteElement(element);
//Assert
Assert.That(modelProblem.Elements, Is.Empty);
}
public void DeleteElement_ProblemWithSeveralElements_ExpectElementIdsAreCorrect()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var element1 = modelProblem.AddElement(modelProblem.AddNode(), modelProblem.AddNode());
var element2 = modelProblem.AddElement(modelProblem.AddNode(), modelProblem.AddNode());
var element3 = modelProblem.AddElement(modelProblem.AddNode(), modelProblem.AddNode());
var element4 = modelProblem.AddElement(modelProblem.AddNode(), modelProblem.AddNode());
//Act
modelProblem.DeleteElement(element1);
//Assert
Assert.AreEqual(element2.Id, 1);
Assert.AreEqual(element3.Id, 2);
Assert.AreEqual(element4.Id, 3);
}