tests/testthat/test-cancel-sync.R

In gaborcsardi/async: Asynchronous Computation and 'I/O'

test_that("detect, if one is done", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() TRUE)
    }
    async_detect(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  synchronise(do())
  toc <- Sys.time()

  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("detect, if one errors",  {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    async_detect(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("every, if one is FALSE", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() FALSE)
    }
    async_every(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  synchronise(do())
  toc <- Sys.time()
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("every, if one errors", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    async_every(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("filter, if one errors", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    async_filter(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("map, if one errors", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    async_map(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("some, if one is TRUE", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() TRUE)
    }
    async_some(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  synchronise(do())
  toc <- Sys.time()
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("every, if one errors", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    async_some(c(1/1000, 5), f)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("when_all, if one errors", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    defs <- lapply(c(1/1000, 5, 5), f)
    when_all(.list = defs)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "foobar")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("when_some, if enough are done", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() "yep")
    }
    defs <- lapply(c(1/1000, 5, 1/1000, 5), f)
    when_some(2, .list = defs)
  }

  tic <- Sys.time()
  res <- synchronise(do())
  toc <- Sys.time()

  expect_equal(res, list("yep", "yep"))
  expect_equal(pinged, 2L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("when_some, if some error", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() stop("foobar"))
    }
    defs <- lapply(c(5, 1/1000, 1/1000, 5), f)
    when_some(3, .list = defs)
  }

  tic <- Sys.time()
  err <- tryCatch(synchronise(do()), error = identity)
  toc <- Sys.time()

  expect_s3_class(err, "async_rejected")
  expect_equal(conditionMessage(err), "when_some / when_any failed")
  expect_equal(length(err$errors), 2)
  expect_equal(conditionMessage(err$errors[[1]]), "foobar")
  expect_equal(conditionMessage(err$errors[[2]]), "foobar")
  expect_equal(pinged, 2L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})

test_that("when_any, if one is done", {
  pinged <- 0L
  do <- function() {
    f <- function(n) {
      force(n)
      delay(n)$
        then(function() pinged <<- pinged + 1)$
        then(function() "yep")
    }
    defs <- lapply(c(5, 5, 1/1000, 5), f)
    when_any(.list = defs)
  }

  tic <- Sys.time()
  res <- synchronise(do())
  toc <- Sys.time()

  expect_equal(res, "yep")
  expect_equal(pinged, 1L)
  expect_true(toc - tic < as.difftime(4.5, units = "secs"))
})