import pytest import sys def pytest_addoption(parser): group = parser.getgroup("debugconfig") group.addoption('--setuponly', '--setup-only', action="store_true", help="only setup fixtures, don't execute the tests.") @pytest.hookimpl(hookwrapper=True) def pytest_fixture_setup(fixturedef, request): yield config = request.config if config.option.setuponly: if hasattr(request, 'param'): # Save the fixture parameter so ._show_fixture_action() can # display it now and during the teardown (in .finish()). if fixturedef.ids: if callable(fixturedef.ids): fixturedef.cached_param = fixturedef.ids(request.param) else: fixturedef.cached_param = fixturedef.ids[request.param_index] else: fixturedef.cached_param = request.param _show_fixture_action(fixturedef, 'SETUP') def pytest_fixture_post_finalizer(fixturedef): if hasattr(fixturedef, "cached_result"): config = fixturedef._fixturemanager.config if config.option.setuponly: _show_fixture_action(fixturedef, 'TEARDOWN') if hasattr(fixturedef, "cached_param"): del fixturedef.cached_param def _show_fixture_action(fixturedef, msg): config = fixturedef._fixturemanager.config capman = config.pluginmanager.getplugin('capturemanager') if capman: out, err = capman.suspendcapture() tw = config.get_terminal_writer() tw.line() tw.write(' ' * 2 * fixturedef.scopenum) tw.write('{step} {scope} {fixture}'.format( step=msg.ljust(8), # align the output to TEARDOWN scope=fixturedef.scope[0].upper(), fixture=fixturedef.argname)) if msg == 'SETUP': deps = sorted(arg for arg in fixturedef.argnames if arg != 'request') if deps: tw.write(' (fixtures used: {0})'.format(', '.join(deps))) if hasattr(fixturedef, 'cached_param'): tw.write('[{0}]'.format(fixturedef.cached_param)) if capman: capman.resumecapture() sys.stdout.write(out) sys.stderr.write(err)