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class TestImportTariffs(TestCaseWithTransport):
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class ImportTariffTestCase(TestCaseWithTransport):
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"""Check how many modules are loaded for some representative scenarios.
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See the Testing Guide in the developer documentation for more explanation.
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We must respect the setup used by the selftest command regarding
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plugins. This allows the user to control which plugins are in effect while
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running these tests and respect the import policies defined here.
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When failures are encountered for a given plugin, they can generally be
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addressed by using lazy import or lazy hook registration.
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# Preserve some env vars as we want to escape the isolation for them
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self.preserved_env_vars = {}
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for name in ('BZR_HOME', 'BZR_PLUGIN_PATH', 'BZR_DISABLE_PLUGINS',
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'BZR_PLUGINS_AT', 'HOME'):
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for name in ('BZR_PLUGIN_PATH', 'BZR_DISABLE_PLUGINS', 'BZR_PLUGINS_AT'
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self.preserved_env_vars[name] = os.environ.get(name)
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super(TestImportTariffs, self).setUp()
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super(ImportTariffTestCase, self).setUp()
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def start_bzr_subprocess_with_import_check(self, args):
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def start_bzr_subprocess_with_import_check(self, args, stderr_file=None):
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"""Run a bzr process and capture the imports.
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This is fairly expensive because we start a subprocess, so we aim to
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cover representative rather than exhaustive cases.
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# We use PYTHON_VERBOSE rather than --profile-importts because in
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# We use PYTHON_VERBOSE rather than --profile-imports because in
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# experimentation the profile-imports output seems to not always show
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# the modules you'd expect; this can be debugged but python -v seems
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# more likely to always show everything. And we use the environment
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# variable rather than 'python -v' in the hope it will work even if
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# bzr is frozen and python is not explicitly specified. -- mbp 20100208
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# Normally we want test isolation from the real $HOME but here we
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# explicitly do want to test against things installed there, therefore
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env_changes = dict(PYTHONVERBOSE='1', **self.preserved_env_vars)
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return self.start_bzr_subprocess(args, env_changes=env_changes,
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allow_plugins=(not are_plugins_disabled()))
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trace.mutter('Setting env for bzr subprocess: %r', env_changes)
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kwargs = dict(env_changes=env_changes,
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allow_plugins=(not are_plugins_disabled()))
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# We don't want to update the whole call chain so we insert stderr
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kwargs['stderr'] = stderr_file
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return self.start_bzr_subprocess(args, **kwargs)
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def check_forbidden_modules(self, err, forbidden_imports):
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"""Check for forbidden modules in stderr.
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def test_simple_serve(self):
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# 'serve' in a default format working tree shouldn't need many modules
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tree = self.make_branch_and_tree('.')
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# Capture the bzr serve process' stderr in a file to avoid deadlocks
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# while the smart client interacts with it.
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stderr_file = open('bzr-serve.stderr', 'w')
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process = self.start_bzr_subprocess_with_import_check(['serve',
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'--inet', '-d', tree.basedir])
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'--inet', '-d', tree.basedir], stderr_file=stderr_file)
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url = 'bzr://localhost/'
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self.permit_url(url)
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client_medium = medium.SmartSimplePipesClientMedium(
added
removed
bzrlib/tests/test_import_tariff.py
