show_elapsed_time.py

@pytest.hookimpl(hookwrapper=True)
def pytest_report_teststatus(report, config):
    outcome = yield
    res = outcome.get_result()

    attr_name = "___TIME___"
    if report.when == "setup":
        # HACK: store the start time in `config`
        setattr(config, attr_name, time.time())
    elif report.when == "call":
        start = getattr(config, attr_name)
        new_res = res[:2] + (res[2] + " ({:.3f} s)".format(time.time() - start),)
        outcome.force_result(new_res)