An old style of testing that's no longer encouraged.
expect_that(object, condition, info = NULL, label = NULL)
Object to test.
Supports limited unquoting to make it easier to generate readable failures within a function or for loop. See quasi_label for more details.
a function that returns whether or not the condition is met, and if not, an error message to display.
Extra information to be included in the message. This argument is soft-deprecated and should not be used in new code. Instead see alternatives in quasi_label.
Used to customise failure messages. For expert use only.
the (internal) expectation result as an invisible list
fail() for an expectation that always fails.