def test_call_set_should_capture_backtrace_only_once():
callset = NPlusOneCallSet()
callset.update(SQL, CALL_COUNT_THRESHOLD, DURATION_THRESHOLD)
assert callset.should_capture_backtrace(SQL)
assert not callset.should_capture_backtrace(SQL)
callset.update(SQL, CALL_COUNT_THRESHOLD // 2, DURATION_THRESHOLD / 2)
assert not callset.should_capture_backtrace(SQL)
def test_call_set_update_increments_call_count_and_duration():
callset = NPlusOneCallSet()
callset.update(SQL, 3, 0.11)
callset.update(SQL, 2, 0.07)
item = callset.find_for(SQL)
assert item.call_count == 5
assert item.call_duration == 0.18
def test_call_set_updates():
sql = "SELECT * from test"
callset = NPlusOneCallSet()
callset.update(sql, 3, 4)
item = callset.find_for(sql)
assert (3 == item.call_count)
assert (4 == item.call_duration)
def test_should_capture_backtrace():
sql = "SELECT * from test"
callset = NPlusOneCallSet()
callset.update(sql, NPlusOneCallSetItem.CALL_COUNT_THRESHOLD - 1,
NPlusOneCallSetItem.DURATION_THRESHOLD - 1)
assert (callset.should_capture_backtrace(sql) is False)
callset.update(sql, 1, 1)
assert (callset.should_capture_backtrace(sql) is True)
def test_call_set_update_no_longer_increments_call_count_and_duration_after_capture(
):
callset = NPlusOneCallSet()
callset.update(SQL, CALL_COUNT_THRESHOLD, DURATION_THRESHOLD)
callset.should_capture_backtrace(SQL)
callset.update(SQL, CALL_COUNT_THRESHOLD // 2, DURATION_THRESHOLD // 2)
item = callset.find_for(SQL)
assert item.call_count == CALL_COUNT_THRESHOLD
assert item.call_duration == DURATION_THRESHOLD
def test_is_past_duration_threshold():
sql = "SELECT * from test"
callset = NPlusOneCallSet()
callset.update(sql, 0, NPlusOneCallSetItem.DURATION_THRESHOLD - 1)
item = callset.find_for(sql)
assert (item.is_past_duration_threshold() is False)
callset.update(sql, 0, 1)
assert (item.is_past_duration_threshold() is True)
# Assert again to test the attribute check in the function
assert (item.is_past_duration_threshold() is True)
def test_no_capture_if_already_captured():
sql = "SELECT * from test"
callset = NPlusOneCallSet()
callset.update(sql, NPlusOneCallSetItem.CALL_COUNT_THRESHOLD,
NPlusOneCallSetItem.DURATION_THRESHOLD)
assert (callset.should_capture_backtrace(sql) is True)
# Subsequent calls should return False
assert (callset.should_capture_backtrace(sql) is False)
callset.update(sql, 1, 1)
assert (callset.should_capture_backtrace(sql) is False)
