public function assignCanOverridePreviouslyAssignedValues()
{
$this->templateVariableContainer->expects($this->at(0))->method('add')->with('foo', 'FooValue');
$this->templateVariableContainer->expects($this->at(1))->method('add')->with('foo', 'FooValueOverridden');
$this->view->assign('foo', 'FooValue');
$this->view->assign('foo', 'FooValueOverridden');
}