Module Tezt_wrapper.UsesSource

Test dependencies.

Test.register and Regression.register take an optional argument ?uses that allows to declare that the test uses a given file.

For instance, you can define:

  let data = Uses.make ~tag:"data" ~path:"data/file.dat"

You would then:

• declare your test with ~uses:[data];
• use Uses.path data to get the path to your file.

~uses:[data] adds the tag of data to the test tags.

Uses.path data checks that the current test was declared with data in its ~uses. And when you declare a test with ~uses:[data], the test checks, at the end, that Uses.path data was called. This helps to maintain the invariant that a test that uses a given file has a given tag.