Test original method without using the constructor in PHPUnit (usefull for Model or Module testing in Contao)

originalMethodWithMockTest.php

<?php 
class ModelTest extends TestCase
{
  public function getModelMock ()
  {
    // The key is the null value to setMethod (default is [] which mocks all methods).
    $model = $this->getMockBuilder(FieldPaletteModel::class)->setMethods(null)->disableOriginalConstructor()->getMock();
  }
}