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Add assert_scalar_positive_integer #3

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merged 2 commits into from
Sep 6, 2024
Merged

Add assert_scalar_positive_integer #3

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a2ad89c
add assert_scalar_positive_integer
edknock Sep 6, 2024
21b0f65
allow_zero default is TRUE, add tests for scalar positive integer
edknock Sep 6, 2024
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13 changes: 13 additions & 0 deletions R/standalone-utils-assert.R
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Original file line number Diff line number Diff line change
Expand Up @@ -168,6 +168,19 @@ assert_scalar_positive_numeric <- function(x, allow_zero = TRUE,
}


assert_scalar_positive_integer <- function(x, allow_zero = TRUE,
name = deparse(substitute(x)),
tolerance = NULL, arg = name,
call = parent.frame()) {
assert_scalar_integer(x, name, tolerance = tolerance, arg = arg, call = call)
min <- if (allow_zero) 0 else 1
if (x < min) {
cli::cli_abort("'{name}' must be at least {min}", arg = arg, call = call)
}
invisible(x)
}


assert_raw <- function(x, len = NULL, name = deparse(substitute(x)),
arg = name, call = parent.frame()) {
if (!is.raw(x)) {
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18 changes: 18 additions & 0 deletions tests/testthat/test-util-assert.R
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Expand Up @@ -139,3 +139,21 @@ test_that("assert_scalar_positive numeric", {
expect_error(assert_scalar_positive_numeric(x, allow_zero = FALSE),
"'x' must be greater than 0")
})


test_that("assert_scalar_positive integer", {
x <- 1
expect_silent(assert_scalar_positive_integer(x))
expect_silent(assert_scalar_positive_integer(x, allow_zero = FALSE))
x <- 0
expect_silent(assert_scalar_positive_integer(x))
expect_error(assert_scalar_positive_integer(x, allow_zero = FALSE),
"'x' must be at least 1")
x <- -2
expect_error(assert_scalar_positive_integer(x),
"'x' must be at least 0")
expect_error(assert_scalar_positive_integer(x, allow_zero = FALSE),
"'x' must be at least 1")
x <- 1.1
expect_error(assert_scalar_positive_integer(x), "Expected 'x' to be integer")
})