PhpOffice\PhpPresentation\Tests\Writer\ODPresentationTest::testFeatureThumbnail PHP Method

    public function testFeatureThumbnail()
    {
        $imagePath = PHPPRESENTATION_TESTS_BASE_DIR . DIRECTORY_SEPARATOR . 'resources' . DIRECTORY_SEPARATOR . 'images' . DIRECTORY_SEPARATOR . 'PhpPresentationLogo.png';
        $xPathManifest = '/manifest:manifest/manifest:file-entry[@manifest:media-type=\'image/png\'][@manifest:full-path=\'Thumbnails/thumbnail.png\']';
        $oPhpPresentation = new PhpPresentation();
        $oXMLDoc = TestHelperDOCX::getDocument($oPhpPresentation, 'ODPresentation');
        $this->assertFalse($oXMLDoc->fileExists('Thumbnails/thumbnail.png'));
        $this->assertTrue($oXMLDoc->fileExists('META-INF/manifest.xml'));
        $this->assertFalse($oXMLDoc->elementExists($xPathManifest, 'META-INF/manifest.xml'));
        $oPhpPresentation->getPresentationProperties()->setThumbnailPath($imagePath);
        $oXMLDoc = TestHelperDOCX::getDocument($oPhpPresentation, 'ODPresentation');
        $this->assertTrue($oXMLDoc->fileExists('Thumbnails/thumbnail.png'));
        $this->assertTrue($oXMLDoc->fileExists('META-INF/manifest.xml'));
        $this->assertTrue($oXMLDoc->elementExists($xPathManifest, 'META-INF/manifest.xml'));
    }