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#' Test reporter: start recovery.
#'
#' This reporter will call a modified version of [recover()] on all
#' broken expectations.
#'
#' @export
#' @family reporters
DebugReporter <- R6::R6Class("DebugReporter",
inherit = Reporter,
public = list(
add_result = function(context, test, result) {
if (!expectation_success(result) && !is.null(result$start_frame)) {
if (sink_number() > 0) {
sink(self$out)
on.exit(sink(), add = TRUE)
}
recover2(
start_frame = result$start_frame,
end_frame = result$end_frame
)
}
}
)
)
sink_number <- function() {
sink.number(type = "output")
}
# recover2 ----------------------------------------------------------------
# Modeled after utils::recover(), which is
# part of the R package, https://www.R-project.org
#
# Copyright (C) 1995-2016 The R Core Team
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# A copy of the GNU General Public License is available at
# https://www.R-project.org/Licenses/
recover2 <- function(start_frame = 1L, end_frame = sys.nframe()) {
calls <- sys.calls()
if (.isMethodsDispatchOn()) {
tState <- tracingState(FALSE)
on.exit(tracingState(tState))
}
from <- min(end_frame, length(calls))
calls <- calls[start_frame:from]
if (rlang::is_false(peek_option("testthat_format_srcrefs"))) {
calls <- lapply(calls, zap_srcref)
}
calls <- utils::limitedLabels(calls)
repeat {
which <- show_menu(calls, "\nEnter a frame number, or 0 to exit ")
if (which) {
frame <- sys.frame(start_frame - 2 + which)
browse_frame(frame, skip = 7 - which)
}
else {
break
}
}
}
# Helpers -----------------------------------------------------------------
zap_srcref <- function(x) {
attr(x, "srcref") <- NULL
x
}
show_menu <- function(choices, title = NULL) {
utils::menu(choices, title = title)
}
browse_frame <- function(frame, skip) {
eval(
substitute(browser(skipCalls = skip), list(skip = skip)),
envir = frame
)
}
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