checkmate (version 1.8.3)

checkEnvironment: Check if an argument is an environment

Description

Check if an argument is an environment

Usage

checkEnvironment(x, contains = character(0L), null.ok = FALSE)
check_environment(x, contains = character(0L), null.ok = FALSE)
assertEnvironment(x, contains = character(0L), null.ok = FALSE,
  .var.name = vname(x), add = NULL)
assert_environment(x, contains = character(0L), null.ok = FALSE,
  .var.name = vname(x), add = NULL)
testEnvironment(x, contains = character(0L), null.ok = FALSE)
test_environment(x, contains = character(0L), null.ok = FALSE)
expect_environment(x, contains = character(0L), null.ok = FALSE,
  info = NULL, label = vname(x))

Arguments

x

[any] Object to check.

contains

[character] Vector of object names expected in the environment. Defaults to character(0).

null.ok

[logical(1)] If set to TRUE, x may also be NULL. In this case only a type check of x is performed, all additional checks are disabled.

.var.name

[character(1)] Name of the checked object to print in assertions. Defaults to the heuristic implemented in vname.

add

[AssertCollection] Collection to store assertion messages. See AssertCollection.

info

[character(1)] Extra information to be included in the message for the testthat reporter. See expect_that.

label

[character(1)] Name of the checked object to print in messages. Defaults to the heuristic implemented in vname.

Value

Depending on the function prefix: If the check is successful, the functions assertEnvironment/assert_environment return x invisibly, whereas checkEnvironment/check_environment and testEnvironment/test_environment return TRUE. If the check is not successful, assertEnvironment/assert_environment throws an error message, testEnvironment/test_environment returns FALSE, and checkEnvironment returns a string with the error message. The function expect_environment always returns an expectation.

See Also

Other basetypes: checkArray, checkAtomicVector, checkAtomic, checkCharacter, checkComplex, checkDataFrame, checkDate, checkFactor, checkFunction, checkIntegerish, checkInteger, checkList, checkLogical, checkMatrix, checkNull, checkNumeric, checkVector

Examples

ee = as.environment(list(a = 1))
testEnvironment(ee)
testEnvironment(ee, contains = "a")