def test_when_comparator_empty_then_exception(threshold_config):
threshold_config['comparator'] = ''
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=Monitor.COMPARATORS_DIRECTORY,
comparator_parent_module=Monitor.COMPARATOR_INSTANCES_PARENT_MODULE))
exception_validator.verify_exception(
AssertionError, 'The threshold comparator must contain at least one character!')
def test_when_clear_points_not_positive_integer_then_exception(threshold_config):
threshold_config['clear_points'] = 0
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=Monitor.COMPARATORS_DIRECTORY,
comparator_parent_module=Monitor.COMPARATOR_INSTANCES_PARENT_MODULE))
exception_validator.verify_exception(
AssertionError, "The threshold clear points must be a positive integer, but got '0'!")
def test_when_comparator_file_not_in_directory_then_exception(threshold_config):
threshold_config['comparator'] = 'non_existent_comparator.py'
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=COMPARATORS_TEST_INSTANCES_DIRECTORY,
comparator_parent_module=COMPARATORS_TEST_INSTANCES_MODULE))
exception_validator.verify_exception(
AssertionError,
f"The comparator name must be the Python file name placed in the path '{COMPARATORS_TEST_INSTANCES_DIRECTORY}',"
f" but got '{threshold_config['comparator']}'!")
def test_when_comparator_class_constructor_missing_reference_value_parameter_then_exception(threshold_config):
threshold_config['comparator'] = 'comparator_class_constructor_missing_reference_value.py'
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=COMPARATORS_TEST_INSTANCES_DIRECTORY,
comparator_parent_module=COMPARATORS_TEST_INSTANCES_MODULE))
exception_validator.verify_exception(
AssertionError,
f"Comparator() takes no arguments. Please make sure that the comparator class constructor takes a single "
f"argument representing the reference value for the comparison operation!")
def test_when_comparator_file_contains_multiple_python_classes_then_exception(threshold_config):
threshold_config['comparator'] = 'multiple_classes_in_file.py'
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=COMPARATORS_TEST_INSTANCES_DIRECTORY,
comparator_parent_module=COMPARATORS_TEST_INSTANCES_MODULE))
exception_validator.verify_exception(
AssertionError,
f"The comparator defined in '{threshold_config['comparator']}' must have a single class defined in its file, "
f"but got 2 classes: "
f"{['Comparator', 'AnotherComparator']}!")
def test_when_comparator_class_is_not_subclass_of_abstract_comparator_class_then_exception(threshold_config):
threshold_config['comparator'] = 'comparator_class_not_subclass_of_abstract_comparator_class.py'
exception_validator = RunnableExceptionValidator(
lambda: Threshold(
config=threshold_config,
comparator_directory=COMPARATORS_TEST_INSTANCES_DIRECTORY,
comparator_parent_module=COMPARATORS_TEST_INSTANCES_MODULE))
exception_validator.verify_exception(
AssertionError,
f"The comparator class defined in '{threshold_config['comparator']}' must be a subclass of the abstract "
f"Comparator class defined in "
f"{os.path.join(Threshold.COMPARATOR_ABSTRACT_CLASS_MODULE, Threshold.COMPARATOR_ABSTRACT_CLASS_NAME)}")
def test_when_monitor_well_formed_then_no_exception(monitor):
monitor_instance = Monitor(monitor)
assert monitor_instance.name == monitor['name']
assert monitor_instance.description == monitor['description']
assert monitor_instance.interval == Interval(monitor['interval'])
assert monitor_instance.metric == Metric(
config=monitor['metric'],
metric_directory=Monitor.METRICS_DIRECTORY,
metric_parent_module=Monitor.METRIC_INSTANCES_PARENT_MODULE)
assert monitor_instance.threshold == Threshold(
config=monitor['threshold'],
comparator_directory=Monitor.COMPARATORS_DIRECTORY,
comparator_parent_module=Monitor.COMPARATOR_INSTANCES_PARENT_MODULE)
assert monitor_instance.notifiers == Monitor.Notifiers(
notifiers_config_dict=monitor['notifiers'],
notifier_directory=Monitor.NOTIFIERS_DIRECTORY,
notifier_parent_module=Monitor.NOTIFIER_INSTANCES_PARENT_MODULE)
def __init__(self, monitor_config_dict):
self.name = monitor_config_dict['name']
self.description = monitor_config_dict.get(
'description') # Description is optional, thus we use 'get'
self.interval = Interval(monitor_config_dict['interval'])
self.metric = Metric(
config=monitor_config_dict['metric'],
metric_directory=Monitor.METRICS_DIRECTORY,
metric_parent_module=Monitor.METRIC_INSTANCES_PARENT_MODULE)
self.threshold = Threshold(
config=monitor_config_dict['threshold'],
comparator_directory=Monitor.COMPARATORS_DIRECTORY,
comparator_parent_module=Monitor.COMPARATOR_INSTANCES_PARENT_MODULE
)
self.notifiers = Monitor.Notifiers(
notifiers_config_dict=monitor_config_dict['notifiers'],
notifier_directory=Monitor.NOTIFIERS_DIRECTORY,
notifier_parent_module=Monitor.NOTIFIER_INSTANCES_PARENT_MODULE)
assert len(
self.name
) != 0, 'The name of the monitor must contain at least one character!'
def test_when_clear_points_positive_integer_then_no_exception(threshold_config):
threshold_config['clear_points'] = 1
Threshold(
config=threshold_config,
comparator_directory=Monitor.COMPARATORS_DIRECTORY,
comparator_parent_module=Monitor.COMPARATOR_INSTANCES_PARENT_MODULE)
def test_when_comparator_class_meets_all_contract_requirements_then_no_exception(threshold_config):
threshold_config['comparator'] = 'well_defined_comparator.py'
Threshold(
config=threshold_config,
comparator_directory=COMPARATORS_TEST_INSTANCES_DIRECTORY,
comparator_parent_module=COMPARATORS_TEST_INSTANCES_MODULE)