class-expectations: Class Expectations

In RDocTaskForce/testextra: Extract Test Blocks

Description

These extend the testthat::expect_is to have finer grain tests.

Usage

expect_is_not(object, class, label = NULL)

expect_is_exactly(object, class, label = NULL)

expect_all_inherit(object, class, label = NULL)

Arguments

object	the object in question.
class	the expected class object is to be.
label	Used to customise failure messages. For expert use only.

Functions

• expect_is_not: test that an object does not inherit from a class.

• expect_is_exactly: test that an object is exactly a specific class and not a child class.

• expect_all_inherit: test that all elements of a list inherit a given class.

See Also

Other class: class-tests

Examples

# Test to make sure an object is not of a class.
## Not run: 
# will return an error.
expect_is_not(1L, "numeric")

## End(Not run)

# but this is fine.
expect_is_not('a', "numeric")

expect_is_exactly('a', "character")

RDocTaskForce/testextra documentation built on Feb. 5, 2020, 11:05 p.m.