testthat (version 2.0.1)

expect_that: Expect that a condition holds.

Description

An old style of testing that's no longer encouraged.

Usage

expect_that(object, condition, info = NULL, label = NULL)

Arguments

object

object to test

condition,

a function that returns whether or not the condition is met, and if not, an error message to display.

info

extra information to be included in the message (useful when writing tests in loops).

label

object label. When NULL, computed from deparsed object.

Value

the (internal) expectation result as an invisible list

See Also

fail() for an expectation that always fails.

Examples

# NOT RUN {
expect_that(5 * 2, equals(10))
expect_that(sqrt(2) ^ 2, equals(2))
# }
# NOT RUN {
expect_that(sqrt(2) ^ 2, is_identical_to(2))
# }