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#' Check cassette names
#'
#' @export
#' @param pattern (character) regex pattern for file paths to check.
#' this is done inside of `tests/testthat/`. default: "test-"
#' @param behavior (character) "stop" (default) or "warning". if "warning",
#' we use `immediate.=TRUE` so the warning happens at the top of your
#' tests rather than you seeing it after tests have run (as would happen
#' by default)
#' @param allowed_duplicates (character) cassette names that can be duplicated
#' @includeRmd man/rmdhunks/cassette-names.Rmd details
check_cassette_names <- function(pattern = "test-", behavior = "stop",
allowed_duplicates = NULL) {
assert(allowed_duplicates, "character")
files <- list.files(".", pattern = pattern, full.names = TRUE)
if (length(files) == 0) return()
cassette_names <- function(x) {
tmp <- parse(x, keep.source = TRUE)
df <- utils::getParseData(tmp)
row.names(df) = NULL
z <- as.numeric(row.names(df[df$text == "use_cassette", ])) + 2
gsub("\"", "", df[z, "text"])
}
nms <- stats::setNames(lapply(files, cassette_names), files)
cnms <- unname(unlist(nms))
if (!is.null(allowed_duplicates)) {
cnms <- cnms[!cnms %in% allowed_duplicates]
}
if (any(duplicated(cnms))) {
dups <- unique(cnms[duplicated(cnms)])
fdups <- c()
for (i in seq_along(dups)) {
matched <- lapply(nms, function(w) dups[i] %in% w)
fdups[i] <- sprintf("%s (found in %s)", dups[i],
paste0(basename(names(nms[unlist(matched)])), collapse = ", ")
)
}
mssg <- c("you should not have duplicated cassette names:",
paste0("\n ", paste0(fdups, collapse = "\n ")))
switch(behavior,
stop = stop(mssg, call. = FALSE),
warning = warning(mssg, call. = FALSE, immediate. = TRUE)
)
}
}
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