## Using custom OpenAPI specification and fixtures files You can place custom OpenAPI specification and fixtures files in this directory. The files must be in JSON format, and must be named `spec3.json` and `fixtures3.json` respectively. If those files are present, the test suite will start its own telnyx-mock process on a random available port. In order for this to work, `telnyx-mock` must be on the `PATH` in the environment used to run the test suite.