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import logging
from io import StringIO
import pytest
from health_check.backends import BaseHealthCheckBackend
from health_check.exceptions import HealthCheckException
class TestBaseHealthCheckBackend:
def test_run_check(self):
with pytest.raises(NotImplementedError):
BaseHealthCheckBackend().run_check()
def test_identifier(self):
assert BaseHealthCheckBackend().identifier() == "BaseHealthCheckBackend"
class MyHeathCheck(BaseHealthCheckBackend):
pass
assert MyHeathCheck().identifier() == "MyHeathCheck"
class MyHeathCheck(BaseHealthCheckBackend):
foo = "bar"
def identifier(self):
return self.foo
assert MyHeathCheck().identifier() == "bar"
def test_status(self):
ht = BaseHealthCheckBackend()
assert ht.status == 1
ht.errors = [1]
assert ht.status == 0
def test_pretty_status(self):
ht = BaseHealthCheckBackend()
assert ht.pretty_status() == "working"
ht.errors = ["foo"]
assert ht.pretty_status() == "foo"
ht.errors.append("bar")
assert ht.pretty_status() == "foo\nbar"
ht.errors.append(123)
assert ht.pretty_status() == "foo\nbar\n123"
def test_add_error(self):
ht = BaseHealthCheckBackend()
e = HealthCheckException("foo")
ht.add_error(e)
assert ht.errors[0] is e
ht = BaseHealthCheckBackend()
ht.add_error("bar")
assert isinstance(ht.errors[0], HealthCheckException)
assert str(ht.errors[0]) == "unknown error: bar"
ht = BaseHealthCheckBackend()
ht.add_error(type)
assert isinstance(ht.errors[0], HealthCheckException)
assert str(ht.errors[0]) == "unknown error: unknown error"
def test_add_error_cause(self):
ht = BaseHealthCheckBackend()
logger = logging.getLogger("health-check")
with StringIO() as stream:
stream_handler = logging.StreamHandler(stream)
logger.addHandler(stream_handler)
try:
raise Exception("bar")
except Exception as e:
ht.add_error("foo", e)
stream.seek(0)
log = stream.read()
assert "foo" in log
assert "bar" in log
assert "Traceback" in log
assert "Exception: bar" in log
logger.removeHandler(stream_handler)
with StringIO() as stream:
stream_handler = logging.StreamHandler(stream)
logger.addHandler(stream_handler)
try:
raise Exception("bar")
except Exception:
ht.add_error("foo")
stream.seek(0)
log = stream.read()
assert "foo" in log
assert "bar" not in log
assert "Traceback" not in log
assert "Exception: bar" not in log
logger.removeHandler(stream_handler)
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