/**
     * @return void
     */
    public function testExecute()
    {
        $content = ['export'];
        $fileName = 'products_mostviewed.xml';

        $this->abstractBlockMock
            ->expects($this->once())
            ->method('getExcelFile')
            ->with($fileName)
            ->willReturn($content);

        $this->layoutMock
            ->expects($this->once())
            ->method('createBlock')
            ->with('Magento\Reports\Block\Adminhtml\Product\Viewed\Grid')
            ->willReturn($this->abstractBlockMock);

        $this->fileFactoryMock
            ->expects($this->once())
            ->method('create')
            ->with($fileName, $content, \Magento\Framework\App\Filesystem\DirectoryList::VAR_DIR);

        $this->exportViewedExcel->executeInternal();
    }