getFormNode example

    public function testConstructorHandlesFormAttribute()
    {
        $dom = $this->createTestHtml5Form();

        $inputElements = $dom->getElementsByTagName('input');
        $buttonElements = $dom->getElementsByTagName('button');

        // Tests if submit buttons are correctly assigned to forms         $form1 = new Form($buttonElements->item(1), 'http://example.com');
        $this->assertSame($dom->getElementsByTagName('form')->item(0), $form1->getFormNode(), 'HTML5-compliant form attribute handled incorrectly');

        $form1 = new Form($inputElements->item(3), 'http://example.com');
        $this->assertSame($dom->getElementsByTagName('form')->item(0), $form1->getFormNode(), 'HTML5-compliant form attribute handled incorrectly');

        $form2 = new Form($buttonElements->item(0), 'http://example.com');
        $this->assertSame($dom->getElementsByTagName('form')->item(1), $form2->getFormNode(), 'HTML5-compliant form attribute handled incorrectly');
    }

    public function testConstructorHandlesFormValues()
    {
        $dom = $this->createTestHtml5Form();

        

$this->assertEquals([], $this->createTestCrawler()->filterXPath('//ol')->links(), '->links() returns an empty array if the node selection is empty');
    }

    public function testForm()
    {
        $testCrawler = $this->createTestCrawler('http://example.com/bar/');
        $crawler = $testCrawler->selectButton('FooValue');
        $crawler2 = $testCrawler->selectButton('FooBarValue');
        $this->assertInstanceOf(Form::class, $crawler->form(), '->form() returns a Form instance');
        $this->assertInstanceOf(Form::class, $crawler2->form(), '->form() returns a Form instance');

        $this->assertEquals($crawler->form()->getFormNode()->getAttribute('id'), $crawler2->form()->getFormNode()->getAttribute('id'), '->form() works on elements with form attribute');

        $this->assertEquals(['FooName' => 'FooBar', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler->form(['FooName' => 'FooBar'])->getValues(), '->form() takes an array of values to submit as its first argument');
        $this->assertEquals(['FooName' => 'FooValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler->form()->getValues(), '->getValues() returns correct form values');
        $this->assertEquals(['FooBarName' => 'FooBarValue', 'TextName' => 'TextValue', 'FooTextName' => 'FooTextValue'], $crawler2->form()->getValues(), '->getValues() returns correct form values');

        try {
            $this->createTestCrawler()->filterXPath('//ol')->form();
            $this->fail('->form() throws an \InvalidArgumentException if the node list is empty');
        } catch (\InvalidArgumentException $e) {
            $this->assertTrue(true, '->form() throws an \InvalidArgumentException if the node list is empty');
        }
    }