Merge ~sudeephb/charm-prometheus-alertmanager:unittest_fix into charm-prometheus-alertmanager:master

[Sudeep Bhandari]

Use unittest.mock instead of external mock library.

Use unittest.mock instead of mock(https://pypi.org/project/mock/). This fixes the failing unittests.

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

PASSED: Continuous integration, rev:7accab43a88caaf1ccfaeaf36a3443fb54a1dca4
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/10/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/bootstack/job/lp-charm-test-unit/331/
    None: https://jenkins.canonical.com/bootstack/job/lp-update-mp/1958/

Click here to trigger a rebuild:
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/10//rebuild

review: Approve (continuous-integration)

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

PASSED: Continuous integration, rev:b74426c1f470d62d2a2e32ea8a30d30f1263fc01
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/11/
Executed test runs:
    SUCCESS: https://jenkins.canonical.com/bootstack/job/lp-charm-test-unit/332/
    None: https://jenkins.canonical.com/bootstack/job/lp-update-mp/1959/

Click here to trigger a rebuild:
https://jenkins.canonical.com/bootstack/job/lp-charm-prometheus-alertmanager-ci/11//rebuild

review: Approve (continuous-integration)

[Erhan Sunar (esunar)]

review: Approve

[Ramesh Sattaru (rameshcan)]

review: Approve

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision ad28b271cf03aed41094530e7079f320ef2bb41f

diff --git a/src/tests/unit/requirements.txt b/src/tests/unit/requirements.txt
index 2a72053..b6c8eca 100644
--- a/src/tests/unit/requirements.txt
+++ b/src/tests/unit/requirements.txt
@@ -1,5 +1,4 @@
 coverage
-mock
 nose
 flake8
 ipython
diff --git a/src/tests/unit/test_reactive_alertmanager.py b/src/tests/unit/test_reactive_alertmanager.py
index 90267ac..1b24bb1 100644
--- a/src/tests/unit/test_reactive_alertmanager.py
+++ b/src/tests/unit/test_reactive_alertmanager.py
@@ -3,9 +3,8 @@ import shutil
 import sys
 import tempfile
 import unittest
-
-import mock
-from mock import call
+import unittest.mock as mock
+from unittest.mock import call
 
 import yaml