Check names to comply to specific rules

Description

Similar to checkNamed but you can pass the names directly.

Usage

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checkNames(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL)

check_names(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL)

assertNames(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL, .var.name = vname(x), add = NULL)

assert_names(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL, .var.name = vname(x), add = NULL)

testNames(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL)

test_names(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL)

expect_names(x, type = "named", permutation.of = NULL, subset.of = NULL,
  identical.to = NULL, 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” (default) checks x for regular names which excludes names to be NA or empty (""). “unique” additionally tests for non-duplicated names. “strict” checks for unique names which comply to R's variable name restrictions. Note that for zero-length x all these name checks evaluate to TRUE.

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.

subset.of

[character]
Names provided in x must be subset of the set subset.of. Use this argument if duplicated names are okay.

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.

.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 assertNamed/assert_named return x invisibly, whereas checkNamed/check_named and testNamed/test_named return TRUE. If the check is not successful, assertNamed/assert_named throws an error message, testNamed/test_named returns FALSE, and checkNamed returns a string with the error message. The function expect_named always returns an expectation.

See Also

Other attributes: checkClass, checkNamed

Examples

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

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

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