Erlang Testing (Non Exported / Private) function of module using common test

common-test, erlang, erlang-otp, rebar, testing

Solution

It is impossible. You can use `-ifdef(TEST).` preprocessor condition to export those functions only when compiling for testing.

Depending on your tooling, you might need to explicitly provide that `TEST` macro while compiling the modules. You can do that by using {d,'TEST'} compiler option or -DTEST compilation flag.

Problem

I have a module in Erlang which has functions that are not exported by Erlang. How can I test / call these functions using common test framework?

Original source