class ContentNegotiationTest

class ContentNegotiationTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Verifies HTML responses for bogus Accept headers.
     *
     * Drupal does not fully support older browsers, but a page output is still
     * expected.
     *
     * @see https://www.drupal.org/node/1716790
     */
    public function testBogusAcceptHeader() {
        $tests = [
            // See https://bugs.webkit.org/show_bug.cgi?id=27267.
'Firefox 3.5 (2009)' => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
            'IE8 (2009)' => 'image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-silverlight, */*',
            'Opera (2009)' => 'text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1',
            'Chrome (2009)' => 'application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
            // See https://github.com/symfony/symfony/pull/564.
'Firefox 3.6 (2010)' => 'text/html,application/xhtml+xml,application/json,application/xml;q=0.9,*/*;q=0.8',
            'Safari (2010)' => '*/*',
            'Opera (2010)' => 'image/jpeg,image/gif,image/x-xbitmap,text/html,image/webp,image/png,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.1',
            // See https://www.drupal.org/node/1716790.
'Safari (2010), iOS 4.2.1 (2012)' => 'application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
            'Android #1 (2012)' => 'application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5',
            'Android #2 (2012)' => 'text/xml,text/html,application/xhtml+xml,image/png,text/plain,*/*;q=0.8',
        ];
        foreach ($tests as $case => $header) {
            $this->drupalGet('', [], [
                'Accept: ' . $header,
            ]);
            $this->assertSession()
                ->pageTextNotContains('Unsupported Media Type');
            $this->assertSession()
                ->pageTextContains('Log in');
        }
    }

}