context("stacks")
causeError <- function(full) {
A <- function() {
stop("foo")
}
B <- function() {
A()
}
C <- reactive({
B()
})
res <- try({
captureStackTraces({
isolate({
renderTable({
C()
}, server = FALSE)()
})
})
},
silent = TRUE)
cond <- attr(res, "condition", exact = TRUE)
df <- extractStackTrace(conditionStackTrace(cond), full = full)
df$loc <- cleanLocs(df$loc)
# Compensate for this test being called from different call sites;
# whack the
df <- head(df, -sys.nframe())
df$num <- df$num - sys.nframe()
df
}
cleanLocs <- function(locs) {
locs[!grepl("test-stacks\\.R", locs, perl = TRUE)] <- ""
sub("^.*#", "", locs)
}
dumpTests <- function(df) {
print(bquote({
expect_equal(df$num, .(df$num))
expect_equal(df$call, .(df$call))
expect_equal(nzchar(df$loc), .(nzchar(df$loc)))
}))
}
test_that("integration tests", {
df <- causeError(full = FALSE)
# dumpTests(df)
expect_equal(df$num, c(56L, 55L, 54L, 38L, 37L, 36L, 35L,
34L, 33L, 32L, 31L, 30L))
expect_equal(df$call, c("A", "B", "<reactive:C>", "C", "renderTable",
"func", "force", "withVisible", "withCallingHandlers", "globals$domain$wrapSync",
"promises::with_promise_domain", "captureStackTraces"))
expect_equal(nzchar(df$loc), c(TRUE, TRUE, TRUE, FALSE, TRUE,
FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE))
df <- causeError(full = TRUE)
# dumpTests(df)
expect_equal(df$num, c(59L, 58L, 57L, 56L, 55L, 54L, 53L,
52L, 51L, 50L, 49L, 48L, 47L, 46L, 45L, 44L, 43L, 42L, 41L,
40L, 39L, 38L, 37L, 36L, 35L, 34L, 33L, 32L, 31L, 30L, 29L,
28L, 27L, 26L, 25L, 24L, 23L, 22L, 21L, 20L, 19L, 18L, 17L,
16L, 15L, 14L, 13L, 12L, 11L, 10L, 9L, 8L, 7L, 6L, 5L, 4L,
3L, 2L, 1L))
expect_equal(df$call, c("h", ".handleSimpleError", "stop",
"A", "B", "<reactive:C>", "..stacktraceon..", ".func", "withVisible",
"withCallingHandlers", "contextFunc", "env$runWith", "force",
"globals$domain$wrapSync", "promises::with_promise_domain",
"withReactiveDomain", "globals$domain$wrapSync", "promises::with_promise_domain",
"ctx$run", "self$.updateValue", "..stacktraceoff..", "C",
"renderTable", "func", "force", "withVisible", "withCallingHandlers",
"globals$domain$wrapSync", "promises::with_promise_domain",
"captureStackTraces", "doTryCatch", "tryCatchOne", "tryCatchList",
"tryCatch", "do", "hybrid_chain", "origRenderFunc", "renderTable({ C() }, server = FALSE)",
"..stacktraceon..", "contextFunc", "env$runWith", "force",
"globals$domain$wrapSync", "promises::with_promise_domain",
"withReactiveDomain", "globals$domain$wrapSync", "promises::with_promise_domain",
"ctx$run", "..stacktraceoff..", "isolate", "withCallingHandlers",
"globals$domain$wrapSync", "promises::with_promise_domain",
"captureStackTraces", "doTryCatch", "tryCatchOne", "tryCatchList",
"tryCatch", "try"))
expect_equal(nzchar(df$loc), c(FALSE, FALSE, FALSE, TRUE,
TRUE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, FALSE,
FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE,
FALSE, TRUE, FALSE, FALSE, FALSE, TRUE, FALSE, FALSE, FALSE,
FALSE))
})
test_that("shiny.error", {
caught <- NULL
op <- options(shiny.error = function() { caught <<- TRUE })
on.exit(options(op))
# Regular errors should be intercepted by shiny.error
try(shiny:::shinyCallingHandlers(stop("boom")), silent = TRUE)
expect_true(caught)
caught <- NULL
# Validation errors shouldn't be intercepted by shiny.error
try(shiny:::shinyCallingHandlers(validate(need(NULL, FALSE))), silent = TRUE)
expect_null(caught)
er <- eventReactive(NULL, { "Hello" })
try(shiny:::shinyCallingHandlers(isolate(er())), silent = TRUE)
expect_null(caught)
try(shiny:::shinyCallingHandlers(isolate(er())), silent = TRUE)
expect_null(caught)
})
test_that("validation error logging", {
caught <- NULL
# Given an error-throwing exception expr, execute it
# using withLogErrors, and superassign the warning that
# results (the error log is emitted using warning())
# into the parent variable `caught`
captureErrorLog <- function(expr) {
tryCatch(
tryCatch(
shiny::withLogErrors(expr),
warning = function(cond) {
caught <<- cond
}
),
error = function(e) {
}
)
}
captureErrorLog(validate("boom"))
expect_null(caught)
captureErrorLog(stop("boom"))
expect_true(!is.null(caught))
})
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