# `$TestsOnly$` Visibility Test - Incremental Compiling this module should **always fail**. It tests that the `$TestsOnly$` pragma limits visibility to only `.0rx` sources that also have the `$TestsOnly$` pragma, as well as all `.0rt` sources. To compile: ```shell ZEOLITE_PATH=$(zeolite --get-path) zeolite -p $ZEOLITE_PATH -r tests/tests-only ``` The compiler errors should look something like this: ```text Zeolite execution failed. Definition for Type1 ["tests/tests-only/private.0rx" (line 19, column 1)] does not correspond to a visible category in this module ```