initial

Author: nip3o

pytest_stepwise.py

@@ -0,0 +1,57 @@
+import pytest
+from pytest_cache import Cache
+from pytest import Session
+
+__version__ = '1.0'
+
+
+def pytest_addoption(parser):
+    group = parser.getgroup('general')
+    group.addoption('--stepwise', action='store_true', dest='stepwise',
+                    help='exit on test fail and continue from last failing test next time')
+
+
+@pytest.mark.tryfirst
+def pytest_configure(config):
+    config.cache = Cache(config)
+    config.pluginmanager.register(StepwisePlugin(config), 'stepwiseplugin')
+
+
+class StepwisePlugin:
+    def __init__(self, config):
+        self.config = config
+        self.active = config.getvalue('stepwise')
+
+        if self.active:
+            self.lastfailed = config.cache.get('cache/stepwise', set())
+
+    def pytest_collection_modifyitems(self, session, config, items):
+        if not self.active or not self.lastfailed:
+            return
+
+        already_passed = []
+        for item in items:
+            if item.nodeid in self.lastfailed:
+                break
+            else:
+                already_passed.append(item)
+
+        for item in already_passed:
+            items.remove(item)
+
+        config.hook.pytest_deselected(items=already_passed)
+
+    def pytest_runtest_logreport(self, report):
+        if not self.active or 'xfail' in report.keywords:
+            return
+
+        if report.failed:
+            self.lastfailed.add(report.nodeid)
+            raise Session.Interrupted('Test failed, continuing from this test next run.')
+
+        elif report.when == 'call':
+            self.lastfailed.discard(report.nodeid)
+
+    def pytest_sessionfinish(self, session):
+        if self.active:
+            self.config.cache.set('cache/stepwise', self.lastfailed)

setup.py

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+from setuptools import setup
+
+setup(
+    name='pytest-stepwise',
+    version='1.0',
+    author='Niclas Olofsson',
+    description='Run pytest one failing test at a time.',
+    py_modules=['pytest_stepwise'],
+    install_requires=[
+        'pytest-cache >= 1.0',
+    ],
+    entry_points={
+        'pytest11': [
+            'stepwise = pytest_stepwise',
+        ]
+    },
+)