test_that("pdf conversion", {
    article_dir <- system.file("examples/pdf_conversion", package = "texor")
    dir.create(your_article_folder <- file.path(tempdir(), "tempdir"))
    x <- file.copy(from = article_dir, to = your_article_folder,recursive = TRUE,)
    your_article_path <- paste(your_article_folder,"pdf_conversion",sep="/")
    file_path <- paste0(your_article_path,"/normal.pdf")
    texor::convert_to_png(file_path)
    expect_equal(file.exists(paste0(your_article_path,"/normal.png")), TRUE)
    unlink(your_article_folder,recursive = TRUE)
})