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How to use pytest_plugin_registered method in Pytest

Best Python code snippet using pytest

test_pluginmanager.py

Source:test_pluginmanager.py

...90    def test_hook_tracing(self):91        pytestpm = get_config().pluginmanager  # fully initialized with plugins92        saveindent = []93        class api1:94            def pytest_plugin_registered(self):95                saveindent.append(pytestpm.trace.root.indent)96        class api2:97            def pytest_plugin_registered(self):98                saveindent.append(pytestpm.trace.root.indent)99                raise ValueError()100        l = []101        pytestpm.trace.root.setwriter(l.append)102        undo = pytestpm.enable_tracing()103        try:104            indent = pytestpm.trace.root.indent105            p = api1()106            pytestpm.register(p)107            assert pytestpm.trace.root.indent == indent108            assert len(l) >= 2109            assert 'pytest_plugin_registered' in l[0]110            assert 'finish' in l[1]111            l[:] = []...

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