Quick recursive arguments checks on lists and data frames

These functions are the tuned counterparts of qtest, qassert and qexpect tailored for recursive checks of list elements or data frame columns.

qassertr(x, rules, .var.name = vname(x))

qtestr(x, rules, depth = 1L)

qexpectr(x, rules, info = NULL, label = vname(x))

Arguments

x

[list or data.frame]
List or data frame to check for compliance with at least one of rules. See details of qtest for rule explanation.

rules

[character]
Set of rules. See qtest

.var.name

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

depth

[integer(1)]
Maximum recursion depth. Defaults to “1” to directly check list elements or data frame columns. Set to a higher value to check lists of lists of elements.

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

See qassert.

See also

qtest, qassert

Examples

# All list elements are integers with length >= 1?
qtestr(as.list(1:10), "i+")
#> [1] TRUE

# All list elements (i.e. data frame columns) are numeric?
qtestr(iris, "n")
#> [1] FALSE

# All list elements are numeric, w/o NAs?
qtestr(list(a = 1:3, b = rnorm(1), c = letters), "N+")
#> [1] FALSE

# All list elements are numeric OR character
qtestr(list(a = 1:3, b = rnorm(1), c = letters), c("N+", "S+"))
#> [1] TRUE