R: Easy Pre and Post Assertions

# Easy Pre and Post Assertions

## Documentation for package ‘assertthat’ version 0.2.1

- DESCRIPTION file.

## Help Pages

%has_args% | Check a function has specified arguments
%has_attr% | Has attribute or name?
%has_name% | Has attribute or name?
are_equal | Are two objects equal?
assertions-file | Useful test related to files
assert_that | Assert that certain conditions are true.
has_args | Check a function has specified arguments
has_attr | Has attribute or name?
has_extension | Useful test related to files
has_name | Has attribute or name?
is.count | Assert input is a scalar.
is.date | Missing is functions.
is.dir | Useful test related to files
is.error | Missing is functions.
is.flag | Assert input is a scalar.
is.number | Assert input is a scalar.
is.readable | Useful test related to files
is.scalar | Assert input is a scalar.
is.string | Assert input is a scalar.
is.time | Missing is functions.
is.writeable | Useful test related to files
noNA | Does object contain any missing values?
not_empty | Check an object doesn't have any empty dimensions
on_failure | Custom failure messages for assertions.
on_failure<- | Custom failure messages for assertions.
see_if | Assert that certain conditions are true.
validate_that | Validate that certain conditions are true.