checkmate (version 1.7.2)

checkCharacter: Check if an argument is a vector of type character

Description

Check if an argument is a vector of type character

Usage

checkCharacter(x, min.chars = NULL, pattern = NULL, fixed = NULL,
  ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE,
  len = NULL, min.len = NULL, max.len = NULL, unique = FALSE,
  names = NULL)

assertCharacter(x, min.chars = NULL, pattern = NULL, fixed = NULL, ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE, len = NULL, min.len = NULL, max.len = NULL, unique = FALSE, names = NULL, add = NULL, .var.name)

assert_character(x, min.chars = NULL, pattern = NULL, fixed = NULL, ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE, len = NULL, min.len = NULL, max.len = NULL, unique = FALSE, names = NULL, add = NULL, .var.name)

testCharacter(x, min.chars = NULL, pattern = NULL, fixed = NULL, ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE, len = NULL, min.len = NULL, max.len = NULL, unique = FALSE, names = NULL)

test_character(x, min.chars = NULL, pattern = NULL, fixed = NULL, ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE, len = NULL, min.len = NULL, max.len = NULL, unique = FALSE, names = NULL)

expect_character(x, min.chars = NULL, pattern = NULL, fixed = NULL, ignore.case = FALSE, any.missing = TRUE, all.missing = TRUE, len = NULL, min.len = NULL, max.len = NULL, unique = FALSE, names = NULL, info = NULL, label = NULL)

Arguments

x
[any] Object to check.
min.chars
[integer(1)] Minimum number of characters in each element of x.
pattern
[character(1L)] Regular expression as used in grepl. All elements of x must comply to this pattern.
fixed
[character(1)] Substring to detect in x. Will be used as pattern in grepl with option fixed set to TRUE. All elements of x mus
ignore.case
[logical(1)] See grepl. Default is FALSE.
any.missing
[logical(1)] Are vectors with missing values allowed? Default is TRUE.
all.missing
[logical(1)] Are vectors with only missing values allowed? Default is TRUE.
len
[integer(1)] Exact expected length of x.
min.len
[integer(1)] Minimal length of x.
max.len
[integer(1)] Maximal length of x.
unique
[logical(1)] Must all values be unique? Default is FALSE.
names
[character(1)] Check for names. See checkNamed for possible values. Default is any which performs no check at all. Note that you can use
add
[AssertCollection] Collection to store assertions. See AssertCollection.
.var.name
[character(1)] Name for x. Defaults to a heuristic to determine the name using deparse and substitute.
info
[character(1)] Extra information to be included in the message for the testthat reporter. See expect_that.
label
[character(1)] Same as .var.name, but passed down to expect_that.

Value

  • Depending on the function prefix: If the check is successful, the functions return TRUE. If the check is not successful, assertCharacter/assert_character throws an error message, testCharacter/test_character returns FALSE, and checkCharacter returns a string with the error message. The function expect_character always returns an expectation.

Details

This function does not distinguish between NA, NA_integer_, NA_real_, NA_complex_ NA_character_ and NaN.

See Also

Other basetypes: checkArray, checkAtomicVector, checkAtomic, checkComplex, checkDataFrame, checkDataTable, checkEnvironment, checkFactor, checkFunction, checkIntegerish, checkInteger, checkList, checkLogical, checkMatrix, checkNumeric, checkVector

Examples

Run this code
testCharacter(letters, min.len = 1, any.missing = FALSE)
testCharacter(letters, min.chars = 2)
testCharacter("example", pattern = "xa")

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