def testRepeatedFunction(self):
"""Tests accumulation of samples of the same function over many files."""
collapser = StackCollapser('./samples.collapsed')
collapser.read_dtrace_logs('./test_data/repeated/')
self.assertEquals(collapser.samples, [{
'frames': ['foo', 'bar', 'baz'],
'weight': 24
}])
def testTrimFunctionOffset(self):
"""Tests removal of the function offset markers in the DTrace format."""
collapser = StackCollapser('./samples.collapsed')
collapser.read_dtrace_logs('./test_data/with_offset/')
self.assertEquals(collapser.samples, [{
'frames': ['foo', 'bar', 'baz'],
'weight': 12
}])
def testValidBlock(self):
"""Tests basic parsing of the DTrace format."""
collapser = StackCollapser('./samples.collapsed')
collapser.read_dtrace_logs('./test_data/valid/')
self.assertEquals(collapser.samples, [{
'frames': ['foo', 'bar', 'baz'],
'weight': 12
}])
def testEmpty(self):
"""Tests that a directory with no valid stacks triggers a failure."""
with self.assertRaises(SystemExit):
collapser = StackCollapser('./samples.collapsed')
collapser.read_dtrace_logs('./test_data/empty/')