public void DeleteForce_NullForce_ExpectArgumentNullException()
{
//Arrange
var modelProblem = new ModelProblem("problem");
//Act
//Assert
Assert.Throws <ArgumentNullException>(() => modelProblem.DeleteForce(null));
}
public void DeleteForce_ForceDoesExistInProblem_ExpectForceRemovedFromCollection()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var force = modelProblem.AddForce(modelProblem.AddNode());
//Act
modelProblem.DeleteForce(force);
//Assert
Assert.That(modelProblem.Forces, Is.Empty);
}
public void DeleteForce_ForceDoesNotExistInProblem_ExpectNothingHappens()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var otherProblem = new ModelProblem("otherProblem");
var strayForce = new ModelForce(otherProblem, 345, new ModelNode(otherProblem, 1234));
//Act
modelProblem.DeleteForce(strayForce);
//Assert
Assert.That(modelProblem.Forces, Is.Empty);
}
public void DeleteForce_ProblemWithSeveralForces_ExpectForceIdsAreCorrect()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var force1 = modelProblem.AddForce(modelProblem.AddNode());
var force2 = modelProblem.AddForce(modelProblem.AddNode());
var force3 = modelProblem.AddForce(modelProblem.AddNode());
var force4 = modelProblem.AddForce(modelProblem.AddNode());
var force5 = modelProblem.AddForce(modelProblem.AddNode());
//Act
modelProblem.DeleteForce(force1);
//Assert
Assert.AreEqual(force2.Id, 1);
Assert.AreEqual(force3.Id, 2);
Assert.AreEqual(force4.Id, 3);
Assert.AreEqual(force5.Id, 4);
}