cibuildwheel/test/02_test/environment.json

{
    "CIBW_TEST_REQUIRES": "nose",
    "CIBW_TEST_COMMAND": "false || nosetests {project}/test",
    "comment": "The 'false ||' bit is to ensure this command runs in a shell on Mac and Linux",
    "CIBW_TEST_COMMAND_WINDOWS": "nosetests {project}/test"
}