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How to use pytest_sessionstart method in Pytest

Best Python code snippet using pytest

spydist.py

Source:spydist.py

...72    def pytest_collection_modifyitems(self, session, config, items):73        debug("master:", session, config, items)74        self.service.set_items(items)75    @pytest.mark.trylast76    def pytest_sessionstart(self, session):77        debug("master: pytest_sessionstart", session)78        self.server = rpyc.utils.server.ThreadedServer(self.service)79        self.port = self.server.port80        filename = os.path.join(self.logs_path, "batch.server")81        utils.write_file(filename, str(self.server.port))82        self.thread = threading.Thread(target=self.server.start)83        self.thread.start()84    def pytest_sessionfinish(self, session):85        debug("master: pytest_sessionfinish", session)86    def pytest_runtestloop(self):87        if wa.start_slaves_from_master:88            slaves_init(self.logs_path)89        try:90            conn = rpyc.connect("127.0.0.1", self.port)91            while 1:92                if not getattr(conn.root, "has_pending")():93                    break94                debug("master: pytest_runtestloop")95                time.sleep(5)96        except KeyboardInterrupt:97            trace("master: interrupted")98            getattr(conn.root, "shutdown")()99            time.sleep(5)100        os._exit(0)101    def pytest_terminal_summary(self, terminalreporter):102        debug("master: pytest_terminal_summary", terminalreporter)103class BatchSlave(object):104    def __init__(self, config, logs_path):105        self.config = config106        self.items = []107        self.logs_path = logs_path108    @pytest.mark.trylast109    def pytest_sessionstart(self, session):110        debug("slave: pytest_sessionstart", session)111    def pytest_sessionfinish(self, session):112        debug("slave: pytest_sessionfinish", session)113    @pytest.hookimpl(trylast=True)114    def pytest_collection_modifyitems(self, session, config, items):115        debug("slave: pytest_collection_modifyitems", session, config, items)116        self.items = items117    def pytest_runtestloop(self):118        def search_nodeid(entries, nodeid):119            for ent in entries:120                if nodeid == ent.nodeid:121                    return ent122            return None123        def finish_test(item):...

spec_pytest_da.py

Source:spec_pytest_da.py

...36        assert callable(da.check.pytest_da.pytest_addoption)37# =============================================================================38class SpecifyPytestSessionstart:39    """40    Specify the da.check.pytest_da.pytest_sessionstart() function.41    """42    # -------------------------------------------------------------------------43    def it_is_callable(self):44        """45        The pytest_sessionstart() function is callable.46        """47        import da.check.pytest_da48        assert callable(da.check.pytest_da.pytest_sessionstart)49# =============================================================================50class SpecifyPytestRuntestSetup:51    """52    Specify the da.check.pytest_da.pytest_runtest_setup() function.53    """54    # -------------------------------------------------------------------------55    def it_is_callable(self):56        """57        The pytest_runtest_setup() function is callable.58        """59        import da.check.pytest_da...

test_main.py

Source:test_main.py

...14    returncode, exc = ret_exc15    c1 = testdir.makeconftest(16        """17        import pytest18        def pytest_sessionstart():19            raise {exc}("boom")20        def pytest_internalerror(excrepr, excinfo):21            returncode = {returncode!r}22            if returncode is not False:23                pytest.exit("exiting after %s..." % excinfo.typename, returncode={returncode!r})24    """.format(25            returncode=returncode, exc=exc.__name__26        )27    )28    result = testdir.runpytest()29    if returncode:30        assert result.ret == returncode31    else:32        assert result.ret == ExitCode.INTERNAL_ERROR...

report_base.py

Source:report_base.py

...50            else:51                self.append_failure(report)52        elif report.skipped:53            self.append_skipped(report)54    def pytest_sessionstart(self):55        demo_util.pause_show_info("pytest_sessionstart in {0}".format(self))...

Pytest Tutorial

Looking for an in-depth tutorial around pytest? LambdaTest covers the detailed pytest tutorial that has everything related to the pytest, from setting up the pytest framework to automation testing. Delve deeper into pytest testing by exploring advanced use cases like parallel testing, pytest fixtures, parameterization, executing multiple test cases from a single file, and more.

Chapters

What is pytest
Pytest installation: Want to start pytest from scratch? See how to install and configure pytest for Python automation testing.
Run first test with pytest framework: Follow this step-by-step tutorial to write and run your first pytest script.
Parallel testing with pytest: A hands-on guide to parallel testing with pytest to improve the scalability of your test automation.
Generate pytest reports: Reports make it easier to understand the results of pytest-based test runs. Learn how to generate pytest reports.
Pytest Parameterized tests: Create and run your pytest scripts while avoiding code duplication and increasing test coverage with parameterization.
Pytest Fixtures: Check out how to implement pytest fixtures for your end-to-end testing needs.
Execute Multiple Test Cases: Explore different scenarios for running multiple test cases in pytest from a single file.
Stop Test Suite after N Test Failures: See how to stop your test suite after n test failures in pytest using the @pytest.mark.incremental decorator and maxfail command-line option.