function ValidationTest::testValidate

Tests #element_validate and #validate.

File

core/modules/system/tests/src/Functional/Form/ValidationTest.php, line 30

Class

ValidationTest

Tests form processing and alteration via form validation handlers.

Namespace

Code

public function testValidate() : void {
  $this->drupalGet('form-test/validate');
  // Verify that #element_validate handlers can alter the form and submitted
  // form values.
  $edit = [
    'name' => 'element_validate',
  ];
  $this->submitForm($edit, 'Save');
  $this->assertSession()
    ->fieldValueEquals('name', '#value changed by #element_validate');
  $this->assertSession()
    ->pageTextContains('Name value: value changed by setValueForElement() in #element_validate');
  // Verify that #validate handlers can alter the form and submitted
  // form values.
  $edit = [
    'name' => 'validate',
  ];
  $this->submitForm($edit, 'Save');
  $this->assertSession()
    ->fieldValueEquals('name', '#value changed by #validate');
  $this->assertSession()
    ->pageTextContains('Name value: value changed by setValueForElement() in #validate');
  // Verify that #element_validate handlers can make form elements
  // inaccessible, but values persist.
  $edit = [
    'name' => 'element_validate_access',
  ];
  $this->submitForm($edit, 'Save');
  $this->assertSession()
    ->fieldNotExists('name');
  $this->assertSession()
    ->pageTextContains('Name value: element_validate_access');
  // Verify that value for inaccessible form element persists.
  $this->submitForm([], 'Save');
  $this->assertSession()
    ->fieldValueNotEquals('name', 'Form element was hidden.');
  $this->assertSession()
    ->pageTextContains('Name value: element_validate_access');
  // Verify that #validate handlers don't run if the CSRF token is invalid.
  $this->drupalLogin($this->drupalCreateUser());
  $this->drupalGet('form-test/validate');
  // $this->assertSession()->fieldExists() does not recognize hidden fields,
  // which breaks $this->submitForm() if we try to change the value of a
  // hidden field such as form_token.
  $this->assertSession()
    ->elementExists('css', 'input[name="form_token"]')
    ->setValue('invalid_token');
  $this->submitForm([
    'name' => 'validate',
  ], 'Save');
  $this->assertSession()
    ->fieldValueNotEquals('name', '#value changed by #validate');
  $this->assertSession()
    ->pageTextNotContains('Name value: value changed by setValueForElement() in #validate');
  $this->assertSession()
    ->pageTextContains('The form has become outdated.');
}