Function test_prefix_package_paths

tests/test_instance_config.py:99–111

(
    limit_loader, modules_tmp_path, modules_tmp_path_prefix, purge_module, site_packages
)

def test_prefix_package_paths(
    limit_loader, modules_tmp_path, modules_tmp_path_prefix, purge_module, site_packages
):
    app = site_packages / "site_package"
    app.mkdir()
    (app / "__init__.py").write_text("import flask\napp = flask.Flask(__name__)\n")
    purge_module("site_package")

    import site_package

    assert site_package.app.instance_path == os.fspath(
        modules_tmp_path / "var" / "site_package-instance"
    )