checkmate (version 1.9.3)

checkR6: Check if an argument is a R6 class

Description

Check if an argument is a R6 class

Usage

checkR6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE)
check_r6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE)
assertR6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE,
  .var.name = vname(x), add = NULL)
assert_r6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE,
  .var.name = vname(x), add = NULL)
testR6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE)
test_r6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE)
expect_r6(x, classes = NULL, ordered = FALSE, cloneable = NULL,
  public = NULL, private = NULL, null.ok = FALSE, info = NULL,
  label = vname(x))

Arguments

x

[any] Object to check.

classes

[character] Class names to check for inheritance with inherits. x must inherit from all specified classes.

ordered

[logical(1)] Expect x to be specialized in provided order. Default is FALSE.

cloneable

[logical(1)] If TRUE, check that x has a clone method. If FALSE, ensure that x is not cloneable.

public

[character] Names of expected public slots. This includes active bindings.

private

[character] Names of expected private slots.

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 assertClass/assert_class return x invisibly, whereas checkClass/check_class and testClass/test_class return TRUE. If the check is not successful, assertClass/assert_class throws an error message, testClass/test_class returns FALSE, and checkClass returns a string with the error message. The function expect_class always returns an expectation.

See Also

Other classes: checkClass, checkMultiClass

Examples

# NOT RUN {
library(R6)
generator = R6Class("Bar",
  public = list(a = 5),
  private = list(b = 42),
  active = list(c = function() 99)
)
x = generator$new()
checkR6(x, "Bar", cloneable = TRUE, public = "a")
# }