add pgpass tests

tests/fixtures/generic/pgpass.json

@@ -0,0 +1 @@
+[{"hostname":"dbserver","port":"443","database":"db1","username":"dbuser","password":"pwd123"},{"hostname":"dbserver2","port":"8888","database":"inventory","username":"joeuser","password":"abc123"},{"hostname":"ax1234","port":"1234","database":"tables","username":"dbadmin","password":"password1"},{"hostname":"dbserver3","port":"8888","database":"inventory","username":"joeuser","password":"abc123"},{"hostname":"localhost","port":"5555","database":"table\\1","username":"user:w:colon","password":"password123"},{"hostname":"hostname","port":"*","database":"database","username":"username","password":"password"}]

tests/test_pgpass.py

@@ -0,0 +1,47 @@
+import os
+import unittest
+import json
+from typing import Dict
+from jc.parsers.pgpass import parse
+
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+
+
+class MyTests(unittest.TestCase):
+    f_in: Dict = {}
+    f_json: Dict = {}
+
+    @classmethod
+    def setUpClass(cls):
+        fixtures = {
+            'pgpass': (
+                'fixtures/generic/pgpass.txt',
+                'fixtures/generic/pgpass.json')
+        }
+
+        for file, filepaths in fixtures.items():
+            with open(os.path.join(THIS_DIR, filepaths[0]), 'r', encoding='utf-8') as a, \
+                 open(os.path.join(THIS_DIR, filepaths[1]), 'r', encoding='utf-8') as b:
+                cls.f_in[file] = a.read()
+                cls.f_json[file] = json.loads(b.read())
+
+
+    def test_pgpass_nodata(self):
+        """
+        Test 'pgpass' with no data
+        """
+        self.assertEqual(parse('', quiet=True), [])
+
+
+    def test_pgpass(self):
+        """
+        Test postgreSQL password file
+        """
+        self.assertEqual(
+            parse(self.f_in['pgpass'], quiet=True),
+            self.f_json['pgpass']
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()