public void ExtentsAssign()
{
tlog.Debug(tag, $"ExtentsAssign START");
var testingTarget = new Extents();
Assert.IsNotNull(testingTarget, "should be not null");
Assert.IsInstanceOf <Extents>(testingTarget, "should be an instance of testing target class!");
Assert.AreEqual(0, testingTarget.Top, "Should be equal!");
using (Extents extents = new Extents(20, 20, 20, 20))
{
testingTarget.Assign(extents);
Assert.AreEqual(20, testingTarget.Top, "Should be equal!");
}
testingTarget.Dispose();
tlog.Debug(tag, $"ExtentsAssign END (OK)");
}