test_that(desc = "errors when mandatory arguments missing", {
expect_error(images_scrap())
expect_error(images_scrap("https://rstudio.com/"))
})
test_that(desc = "checking for errors when
parameters are not of character string type", {
expect_error(images_scrap(link = 2342342423423))
expect_error(images_scrap(link = "https://rstudio.com/",
imgpath = getwd(),
extn = 123))
expect_error(images_scrap(link = "https://rstudio.com/",
imgpath = 2342423,
extn = "jpg"))
})
test_that(desc = "checking for error when
'extn' is provided with a dot .", {
expect_error(images_scrap("https://rstudio.com/",
extn = ".jpg"))
})
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