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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

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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.