/usr/share/doc/r-cran-withr/tests/testthat/test-sink.R is in r-cran-withr 2.1.0-1ubuntu3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | context("With sink")
test_that("with_output_sink works as expected", {
tmp <- tempfile()
on.exit(unlink(tmp), add = TRUE)
tmp2 <- tempfile()
on.exit(unlink(tmp2), add = TRUE)
tmp3 <- tempfile()
on.exit(unlink(tmp3), add = TRUE)
expect_identical(sink.number(), 0L)
with_output_sink(tmp, {
expect_identical(sink.number(), 1L)
cat("output\n")
})
expect_identical(readLines(tmp), "output")
expect_identical(sink.number(), 0L)
with_output_sink(tmp, append = TRUE, {
expect_identical(sink.number(), 1L)
cat("output 2\n")
})
expect_identical(readLines(tmp), c("output", "output 2"))
expect_identical(sink.number(), 0L)
expect_warning(
with_output_sink(tmp, {
sink()
}),
"already removed"
)
expect_identical(sink.number(), 0L)
expect_error(
with_output_sink(NULL, {
NULL
}),
"cannot be NULL"
)
expect_identical(sink.number(), 0L)
})
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