Is there a way to test private functions in modules in ExUnit of Elixir?

elixir
Noah Blues picture Noah Blues · Jan 6, 2014 · Viewed 7.5k times · Source

Functions defined by defp aren't exported so I can't execute them in places other than in the module.

Answer

José Valim picture José Valim · Jan 6, 2014

No, there is no way to test them via ExUnit.

I personally avoid testing private functions because usually you end up testing implementation instead of behaviour and those tests fail as soon as you need to change the code. Instead, I test the expected behaviour via the public functions, breaking them in small, consistent chunks.

Related questions

How to join strings in Elixir?

How do I join two strings in a list with a space, like: ["StringA", "StringB"] becomes "StringA StringB"

Read More
How do you check for the type of variable in Elixir

In Elixir how do you check for type such as in Python: >>> a = "test" >>> type(a) <type 'str'> >>> b =10 >>> type(b) <type 'int'> I …

Read More
Convert Elixir string to integer or float

I need to convert a string to a floating point value or an integer. There was no method such as, string_to_integer

Read More