R: Check names to comply to specific rules

checkNames {checkmate}

R Documentation

Check names to comply to specific rules

Description

Performs various checks on character vectors, usually names.

Usage

checkNames(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names"
)

check_names(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names"
)

assertNames(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names",
  .var.name = vname(x),
  add = NULL
)

assert_names(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names",
  .var.name = vname(x),
  add = NULL
)

testNames(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names"
)

test_names(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names"
)

expect_names(
  x,
  type = "named",
  subset.of = NULL,
  must.include = NULL,
  permutation.of = NULL,
  identical.to = NULL,
  disjunct.from = NULL,
  what = "names",
  info = NULL,
  label = vname(x)
)

Arguments

`x`	[`character` \|\| `NULL`] Names to check using rules defined via `type`.
`type`	[character(1)] Type of formal check(s) to perform on the names. unnamed: Checks `x` to be `NULL`. named: Checks `x` for regular names which excludes names to be `NA` or empty (`""`). unique: Performs checks like with “named” and additionally tests for non-duplicated names. strict: Performs checks like with “unique” and additionally fails for names with UTF-8 characters and names which do not comply to R's variable name restrictions. As regular expression, this is “^[.][a-zA-Z]+[a-zA-Z0-9._]$”. ids: Same as “strict”, but does not enforce uniqueness. Note that for zero-length `x`, all these name checks evaluate to `TRUE`.
`subset.of`	[`character`] Names provided in `x` must be subset of the set `subset.of`.
`must.include`	[`character`] Names provided in `x` must be a superset of the set `must.include`.
`permutation.of`	[`character`] Names provided in `x` must be a permutation of the set `permutation.of`. Duplicated names in `permutation.of` are stripped out and duplicated names in `x` thus lead to a failed check. Use this argument instead of `identical.to` if the order of the names is not relevant.
`identical.to`	[`character`] Names provided in `x` must be identical to the vector `identical.to`. Use this argument instead of `permutation.of` if the order of the names is relevant.
`disjunct.from`	[`character`] Names provided in `x` must may not be present in the vector `disjunct.from`.
`what`	[`character(1)`] Type of name vector to check, e.g. “names” (default), “colnames” or “rownames”.
`.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 assertNames/assert_names return x invisibly, whereas checkNames/check_names and testNames/test_names return TRUE. If the check is not successful, assertNames/assert_names throws an error message, testNames/test_names returns FALSE, and checkNames/check_names return a string with the error message. The function expect_names always returns an expectation.

Examples

x = 1:3
testNames(names(x), "unnamed")
names(x) = letters[1:3]
testNames(names(x), "unique")

cn = c("Species", "Sepal.Length", "Sepal.Width", "Petal.Length", "Petal.Width")
assertNames(names(iris), permutation.of = cn)