<?php
/*
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

namespace ZfTwitterWidgetTests\View;

use ZfTwitterWidget\View\OneTimeJsViewHelper;

class OneTimeJsViewHelperTest extends \PHPUnit_Framework_TestCase
{
    public function testOneTimeJsViewHelper()
    {
        $oneTimeJsVH = new OneTimeJsViewHelper();

        $this->assertGreaterThan(0, strpos($oneTimeJsVH(), 'window.twttr'));
    }
}

<?php
/*
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

namespace ZfTwitterWidgetTests\View;

use ZfTwitterWidget\View\OneTimeJsViewHelper;

class OneTimeJsViewHelperTest extends \PHPUnit_Framework_TestCase
{
    public function testOneTimeJsViewHelper()
    {
        $oneTimeJsVH = new OneTimeJsViewHelper();

        $this->assertGreaterThan(0, strpos($oneTimeJsVH(), 'widgets.js'));
    }
}

Change string to check in test
Change string to check in test
