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119 lines
3.6 KiB
Python
119 lines
3.6 KiB
Python
import mock
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from ddtrace.internal.runtime.collector import ValueCollector
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from ...base import BaseTestCase
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def mocked_collector(mock_collect, **kwargs):
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collector = ValueCollector(**kwargs)
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collector.collect_fn = mock_collect
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return collector
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class TestValueCollector(BaseTestCase):
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def test_default_usage(self):
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mock_collect = mock.MagicMock()
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mock_collect.side_effect = lambda k: [
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('key1', 'value1'),
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('key2', 'value2'),
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]
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vc = mocked_collector(mock_collect)
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self.assertEqual(vc.collect(keys=set(['key1'])), [
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('key1', 'value1'),
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])
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mock_collect.assert_called_once()
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mock_collect.assert_called_with(set(['key1']))
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self.assertEqual(mock_collect.call_count, 1,
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'Collector is not periodic by default')
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def test_enabled(self):
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collect = mock.MagicMock()
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vc = mocked_collector(collect, enabled=False)
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collect.assert_not_called()
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vc.collect()
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collect.assert_not_called()
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def test_periodic(self):
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collect = mock.MagicMock()
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vc = mocked_collector(collect, periodic=True)
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vc.collect()
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self.assertEqual(collect.call_count, 1)
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vc.collect()
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self.assertEqual(collect.call_count, 2)
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def test_not_periodic(self):
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collect = mock.MagicMock()
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vc = mocked_collector(collect)
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collect.assert_not_called()
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vc.collect()
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self.assertEqual(collect.call_count, 1)
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vc.collect()
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self.assertEqual(collect.call_count, 1)
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vc.collect()
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self.assertEqual(collect.call_count, 1)
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def test_required_module(self):
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mock_module = mock.MagicMock()
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mock_module.fn.side_effect = lambda: 'test'
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with self.override_sys_modules(dict(A=mock_module)):
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class AVC(ValueCollector):
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required_modules = ['A']
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def collect_fn(self, keys):
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a = self.modules.get('A')
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a.fn()
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vc = AVC()
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vc.collect()
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mock_module.fn.assert_called_once()
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def test_required_module_not_installed(self):
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collect = mock.MagicMock()
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with mock.patch('ddtrace.internal.runtime.collector.log') as log_mock:
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# Should log a warning (tested below)
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vc = mocked_collector(collect, required_modules=['moduleshouldnotexist'])
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# Collect should not be called as the collector should be disabled.
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collect.assert_not_called()
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vc.collect()
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collect.assert_not_called()
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calls = [
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mock.call(
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'Could not import module "%s" for %s. Disabling collector.',
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'moduleshouldnotexist', vc,
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)
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]
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log_mock.warning.assert_has_calls(calls)
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def test_collected_values(self):
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class V(ValueCollector):
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i = 0
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def collect_fn(self, keys):
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self.i += 1
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return [('i', self.i)]
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vc = V()
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self.assertEqual(vc.collect(), [('i', 1)])
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self.assertEqual(vc.collect(), [('i', 1)])
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self.assertEqual(vc.collect(), [('i', 1)])
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def test_collected_values_periodic(self):
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class V(ValueCollector):
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periodic = True
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i = 0
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def collect_fn(self, keys):
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self.i += 1
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return [('i', self.i)]
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vc = V()
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self.assertEqual(vc.collect(), [('i', 1)])
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self.assertEqual(vc.collect(), [('i', 2)])
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self.assertEqual(vc.collect(), [('i', 3)])
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