public function testValidateForm_true() { $this->form->addElement('textarea')->setName('Textarea-Validate-Test')->setRequired()->setRules('required, string, maxlength=20'); // set value, length ok $element = $this->form->getElementByName('Textarea-Validate-Test'); $element->setValue('01234567890123456789'); // 20 chars $this->assertTrue($this->form->validateForm()); }