#!/usr/bin/env python3
# Copyright 2021 Canonical Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
# For those usages not covered by the Apache License, Version 2.0 please
# contact: legal@canonical.com
#
# To get in touch with the maintainers, please contact:
# osm-charmers@lists.launchpad.net
##
from typing import NoReturn
import unittest
from ops.model import BlockedStatus
from ops.testing import Harness
from charm import PrometheusMongodbExporterCharm
class TestCharm(unittest.TestCase):
"""Prometheus Mongodb Exporter Charm unit tests."""
def setUp(self) -> NoReturn:
"""Test setup"""
self.harness = Harness(PrometheusMongodbExporterCharm)
self.harness.set_leader(is_leader=True)
self.harness.begin()
def test_on_start_without_relations(self) -> NoReturn:
"""Test installation without any relation."""
self.harness.charm.on.start.emit()
# Verifying status
self.assertIsInstance(self.harness.charm.unit.status, BlockedStatus)
# Verifying status message
self.assertGreater(len(self.harness.charm.unit.status.message), 0)
self.assertTrue(
self.harness.charm.unit.status.message.startswith("Waiting for ")
)
self.assertIn("mongodb", self.harness.charm.unit.status.message)
self.assertTrue(self.harness.charm.unit.status.message.endswith(" relation"))
def test_on_start_with_relations_without_http(self) -> NoReturn:
"""Test deployment."""
expected_result = {
"version": 3,
"containers": [
{
"name": "prometheus-mongodb-exporter",
"imageDetails": self.harness.charm.image.fetch(),
"imagePullPolicy": "Always",
"ports": [
{
"name": "prometheus-mongodb-exporter",
"containerPort": 9216,
"protocol": "TCP",
}
],
"envConfig": {},
"command": [
"mongodb_exporter_linux_amd64/mongodb_exporter",
"--mongodbdsn=mongodb://mongo",
],
"kubernetes": {
"readinessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 10,
"periodSeconds": 10,
"timeoutSeconds": 5,
"successThreshold": 1,
"failureThreshold": 3,
},
"livenessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 60,
"timeoutSeconds": 30,
"failureThreshold": 10,
},
},
},
],
"kubernetesResources": {"ingressResources": []},
}
self.harness.charm.on.start.emit()
# Initializing the mongodb relation
relation_id = self.harness.add_relation("mongodb", "mongodb")
self.harness.add_relation_unit(relation_id, "mongodb/0")
self.harness.update_relation_data(
relation_id,
"mongodb/0",
{
"connection_string": "mongodb://mongo",
},
)
# Verifying status
self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
pod_spec, _ = self.harness.get_pod_spec()
self.assertDictEqual(expected_result, pod_spec)
def test_ingress_resources_with_http(self) -> NoReturn:
"""Test ingress resources with HTTP."""
expected_result = {
"version": 3,
"containers": [
{
"name": "prometheus-mongodb-exporter",
"imageDetails": self.harness.charm.image.fetch(),
"imagePullPolicy": "Always",
"ports": [
{
"name": "prometheus-mongodb-exporter",
"containerPort": 9216,
"protocol": "TCP",
}
],
"envConfig": {},
"command": [
"mongodb_exporter_linux_amd64/mongodb_exporter",
"--mongodbdsn=mongodb://mongo",
],
"kubernetes": {
"readinessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 10,
"periodSeconds": 10,
"timeoutSeconds": 5,
"successThreshold": 1,
"failureThreshold": 3,
},
"livenessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 60,
"timeoutSeconds": 30,
"failureThreshold": 10,
},
},
},
],
"kubernetesResources": {
"ingressResources": [
{
"name": "prometheus-mongodb-exporter-ingress",
"annotations": {
"nginx.ingress.kubernetes.io/ssl-redirect": "false",
},
"spec": {
"rules": [
{
"host": "prometheus-mongodb-exporter",
"http": {
"paths": [
{
"path": "/",
"backend": {
"serviceName": "prometheus-mongodb-exporter",
"servicePort": 9216,
},
}
]
},
}
]
},
}
],
},
}
self.harness.charm.on.start.emit()
# Initializing the mongodb relation
relation_id = self.harness.add_relation("mongodb", "mongodb")
self.harness.add_relation_unit(relation_id, "mongodb/0")
self.harness.update_relation_data(
relation_id,
"mongodb/0",
{
"connection_string": "mongodb://mongo",
},
)
self.harness.update_config({"site_url": "http://prometheus-mongodb-exporter"})
pod_spec, _ = self.harness.get_pod_spec()
self.assertDictEqual(expected_result, pod_spec)
def test_ingress_resources_with_https(self) -> NoReturn:
"""Test ingress resources with HTTPS."""
expected_result = {
"version": 3,
"containers": [
{
"name": "prometheus-mongodb-exporter",
"imageDetails": self.harness.charm.image.fetch(),
"imagePullPolicy": "Always",
"ports": [
{
"name": "prometheus-mongodb-exporter",
"containerPort": 9216,
"protocol": "TCP",
}
],
"envConfig": {},
"command": [
"mongodb_exporter_linux_amd64/mongodb_exporter",
"--mongodbdsn=mongodb://mongo",
],
"kubernetes": {
"readinessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 10,
"periodSeconds": 10,
"timeoutSeconds": 5,
"successThreshold": 1,
"failureThreshold": 3,
},
"livenessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 60,
"timeoutSeconds": 30,
"failureThreshold": 10,
},
},
},
],
"kubernetesResources": {
"ingressResources": [
{
"name": "prometheus-mongodb-exporter-ingress",
"annotations": {},
"spec": {
"rules": [
{
"host": "prometheus-mongodb-exporter",
"http": {
"paths": [
{
"path": "/",
"backend": {
"serviceName": "prometheus-mongodb-exporter",
"servicePort": 9216,
},
}
]
},
}
],
"tls": [
{
"hosts": ["prometheus-mongodb-exporter"],
"secretName": "prometheus-mongodb-exporter",
}
],
},
}
],
},
}
self.harness.charm.on.start.emit()
# Initializing the mongodb relation
relation_id = self.harness.add_relation("mongodb", "mongodb")
self.harness.add_relation_unit(relation_id, "mongodb/0")
self.harness.update_relation_data(
relation_id,
"mongodb/0",
{
"connection_string": "mongodb://mongo",
},
)
self.harness.update_config(
{
"site_url": "https://prometheus-mongodb-exporter",
"tls_secret_name": "prometheus-mongodb-exporter",
}
)
pod_spec, _ = self.harness.get_pod_spec()
self.assertDictEqual(expected_result, pod_spec)
def test_ingress_resources_with_https_and_ingress_whitelist(self) -> NoReturn:
"""Test ingress resources with HTTPS and ingress whitelist."""
expected_result = {
"version": 3,
"containers": [
{
"name": "prometheus-mongodb-exporter",
"imageDetails": self.harness.charm.image.fetch(),
"imagePullPolicy": "Always",
"ports": [
{
"name": "prometheus-mongodb-exporter",
"containerPort": 9216,
"protocol": "TCP",
}
],
"envConfig": {},
"command": [
"mongodb_exporter_linux_amd64/mongodb_exporter",
"--mongodbdsn=mongodb://mongo",
],
"kubernetes": {
"readinessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 10,
"periodSeconds": 10,
"timeoutSeconds": 5,
"successThreshold": 1,
"failureThreshold": 3,
},
"livenessProbe": {
"httpGet": {
"path": "/api/health",
"port": 9216,
},
"initialDelaySeconds": 60,
"timeoutSeconds": 30,
"failureThreshold": 10,
},
},
},
],
"kubernetesResources": {
"ingressResources": [
{
"name": "prometheus-mongodb-exporter-ingress",
"annotations": {
"nginx.ingress.kubernetes.io/whitelist-source-range": "0.0.0.0/0",
},
"spec": {
"rules": [
{
"host": "prometheus-mongodb-exporter",
"http": {
"paths": [
{
"path": "/",
"backend": {
"serviceName": "prometheus-mongodb-exporter",
"servicePort": 9216,
},
}
]
},
}
],
"tls": [
{
"hosts": ["prometheus-mongodb-exporter"],
"secretName": "prometheus-mongodb-exporter",
}
],
},
}
],
},
}
self.harness.charm.on.start.emit()
# Initializing the mongodb relation
relation_id = self.harness.add_relation("mongodb", "mongodb")
self.harness.add_relation_unit(relation_id, "mongodb/0")
self.harness.update_relation_data(
relation_id,
"mongodb/0",
{
"connection_string": "mongodb://mongo",
},
)
self.harness.update_config(
{
"site_url": "https://prometheus-mongodb-exporter",
"tls_secret_name": "prometheus-mongodb-exporter",
"ingress_whitelist_source_range": "0.0.0.0/0",
}
)
pod_spec, _ = self.harness.get_pod_spec()
self.assertDictEqual(expected_result, pod_spec)
def test_on_mongodb_unit_relation_changed(self) -> NoReturn:
"""Test to see if mongodb relation is updated."""
self.harness.charm.on.start.emit()
# Initializing the mongodb relation
relation_id = self.harness.add_relation("mongodb", "mongodb")
self.harness.add_relation_unit(relation_id, "mongodb/0")
self.harness.update_relation_data(
relation_id,
"mongodb/0",
{
"connection_string": "mongodb://mongo",
},
)
# Verifying status
self.assertNotIsInstance(self.harness.charm.unit.status, BlockedStatus)
def test_publish_target_info(self) -> NoReturn:
"""Test to see if target relation is updated."""
expected_result = {
"hostname": "prometheus-mongodb-exporter",
"port": "9216",
}
self.harness.charm.on.start.emit()
relation_id = self.harness.add_relation("prometheus-target", "prometheus")
self.harness.add_relation_unit(relation_id, "prometheus/0")
relation_data = self.harness.get_relation_data(
relation_id, "prometheus-mongodb-exporter/0"
)
self.assertDictEqual(expected_result, relation_data)
def test_publish_dashboard_info(self) -> NoReturn:
"""Test to see if dashboard relation is updated."""
self.harness.charm.on.start.emit()
relation_id = self.harness.add_relation("grafana-dashboard", "grafana")
self.harness.add_relation_unit(relation_id, "grafana/0")
relation_data = self.harness.get_relation_data(
relation_id, "prometheus-mongodb-exporter/0"
)
self.assertTrue("dashboard" in relation_data)
self.assertTrue(len(relation_data["dashboard"]) > 0)
if __name__ == "__main__":
unittest.main()