public void BuildCleanTask_NoContext()
{
var cleanCategory = "Build";
var category = "Clean";
var taskType = $"{category}-{cleanCategory}";
var parentTaskName = $"{taskType}-All";
var taskName = "BuildClean";
ICakeContext context = null;
Assert.ThrowsException <ArgumentNullException>(() => context.BuildCleanTask(taskName));
}