| expect_is {testthat} | R Documentation |
Tests whether or not an object inherits from any of a list of classes.
expect_is(object, class, info = NULL, label = NULL)
object |
object to test |
class |
character vector of class names |
info |
extra information to be included in the message (useful when writing tests in loops). |
label |
object label. When |
Other expectations: equivalence,
expect_equal,
expect_equivalent,
expect_identical;
expect-compare, expect_gt,
expect_gte, expect_less_than,
expect_lt, expect_lte,
expect_more_than;
expect_equal_to_reference;
expect_error, expect_match,
expect_message,
expect_output,
expect_warning,
matching-expectations;
expect_false, expect_true;
expect_named; expect_null;
expect_silent;
takes_less_than
expect_is(1, "numeric") a <- matrix(1:10, nrow = 5) expect_is(a, "matrix") expect_is(mtcars, "data.frame") # alternatively for classes that have an is method expect_true(is.data.frame(mtcars))