package_stub: Stub a function in a package by replacing it with something...

In robertzk/testthatsomemore: A mocking, stubbing, and file testing framework extending testthat

Description

Stubbing a function in a package can only be done in the context of some expression (a block of code). Otherwise, dangerous things could happen! (We are actually replacing the function in the package's namespace.)

Usage

package_stub(package_name, function_name, stubbed_value, expr)

Arguments

package_name	character. The name of the package to look in.
function_name	character. The name of the function to stub.
stubbed_value	function. The function to temporarily replace this function with.
expr	expression. An expression to evaluate with the stubbed changes. The stubbing will be reverted after this expression is executed.

Examples

package_stub("methods", "new", function(...) 'test', stopifnot(new('example') == 'test')) 

robertzk/testthatsomemore documentation built on May 27, 2019, 11:38 a.m.