Easy Pre and Post Assertions
Are two objects equal?
Missing is functions.
Assert that certain conditions are true.
Useful test related to files
Check a function has specified arguments
Has attribute or name?
Does object contain any missing values?
Check an object doesn't have any empty dimensions
Custom failure messages for assertions.
Assert input is a scalar.
Validate that certain conditions are true.
An extension to stopifnot() that makes it easy to declare the pre and post conditions that you code should satisfy, while also producing friendly error messages so that your users know what's gone wrong.