Check if an argument is an environment

Share:

Description

Check if an argument is an environment

Usage

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
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, checkAtomic, checkCharacter, checkComplex, checkDataFrame, checkDate, checkFactor, checkFunction, checkIntegerish, checkInteger, checkList, checkLogical, checkMatrix, checkNull, checkNumeric, checkVector

Examples

1
2
3
ee = as.environment(list(a = 1))
testEnvironment(ee)
testEnvironment(ee, contains = "a")

Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.