try setting timezone env variable before tests to ensure it is the same on all test systems

tests/test_last2.py

@@ -0,0 +1,40 @@
+import os
+import json
+import unittest
+import jc.parsers.last
+
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+class MyTests(unittest.TestCase):
+
+    def setUp(self):
+        # input
+        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/ubuntu-20.04/last-F.out'), 'r', encoding='utf-8') as f:
+            self.ubuntu_20_4_last_F = f.read()
+
+        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/last-wF.out'), 'r', encoding='utf-8') as f:
+            self.centos_7_7_last_wF = f.read()
+
+        # output
+        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/ubuntu-20.04/last-F.json'), 'r', encoding='utf-8') as f:
+            self.ubuntu_20_4_last_F_json = json.loads(f.read())
+
+        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/last-wF.json'), 'r', encoding='utf-8') as f:
+            self.centos_7_7_last_wF_json = json.loads(f.read())
+
+    def test_last_F_ubuntu_20_4(self):
+        """
+        Test 'last -F' on Ubuntu 20.4
+        """
+        self.assertEqual(jc.parsers.last.parse(self.ubuntu_20_4_last_F, quiet=True), self.ubuntu_20_4_last_F_json)
+
+    def test_last_wF_centos_7_7(self):
+        """
+        Test 'last -wF' on Centos 7.7
+        """
+        self.assertEqual(jc.parsers.last.parse(self.centos_7_7_last_wF, quiet=True), self.centos_7_7_last_wF_json)
+
+
+if __name__ == '__main__':
+    unittest.main()