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.');
}