class DynamicFormSectionsTest

class DynamicFormSectionsTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'ajax_example',
    ];
    
    /**
     * Test the dynamic sections form without AJAX.
     */
    public function testDynamicFormSections() {
        // Get the Mink stuff.
        $assert = $this->assertSession();
        $page = $this->getSession()
            ->getPage();
        // Get a URL object for the form, specifying no JS.
        $dropdown_url = Url::fromRoute('ajax_example.dynamic_form_sections', [
            'nojs' => 'nojs',
        ]);
        // Get the form.
        $this->drupalGet($dropdown_url);
        // Check for the initial state.
        $detail_children = $page->findAll('css', 'div.details-wrapper *');
        $this->assertEmpty($detail_children);
        // Go through the dropdown options. First outlier is 'Choose question style'
        // which should have an empty details section.
        $this->drupalPostForm($dropdown_url, [
            'question_type_select' => 'Choose question style',
        ], 'Choose');
        $detail_children = $page->findAll('css', 'div.details-wrapper *');
        $this->assertEqual(count($detail_children), 0);
        // Cycle through the other dropdown values.
        $question_styles = [
            'Multiple Choice',
            'True/False',
            'Fill-in-the-blanks',
        ];
        // These all add stuff to the details wrapper.
        foreach ($question_styles as $question_style) {
            $this->drupalPostForm($dropdown_url, [
                'question_type_select' => $question_style,
            ], 'Choose');
            $detail_children = $page->findAll('css', 'div.details-wrapper *');
            $this->assertNotEqual($this->count($detail_children), 0);
            $this->drupalPostForm(NULL, [
                'question' => 'George Washington',
            ], 'Submit your answer');
            $assert->pageTextContains('You got the right answer: George Washington');
        }
        // One wrong answer to exercise that code path.
        $this->drupalPostForm($dropdown_url, [
            'question_type_select' => 'Multiple Choice',
        ], 'Choose');
        $detail_children = $page->findAll('css', 'div.details-wrapper *');
        $this->assertNotEqual($this->count($detail_children), 0);
        $this->drupalPostForm(NULL, [
            'question' => 'Abraham Lincoln',
        ], 'Submit your answer');
        $assert->pageTextContains('Sorry, your answer (Abraham Lincoln) is wrong');
    }

}