[tests] Add test for write_service_to_text() as well as for the issue #46 ('%' in passwords)

Author: gacarrillor

test/data/service_base.txt

@@ -18,3 +18,11 @@ dbname=db_3
 port=3333
 user=user_3
 password=pwd_3
+
+[service_4]
+host=my-project-db-65b82f87-f737-4d69-8cf4-1dd7cd8.withoutclouds.com
+dbname=db_4 # My comment
+port=4444
+user=user_4
+password=pwd_%4 # Test for issue #46
+sslkey=/home/s.key

test/test_lib.py

@@ -4,10 +4,12 @@
 
 Usage from the repo root folder:
 
+    export PGSERVICEPARSER_SRC_DIR=$pwd
     python -m unittest test.test_lib
 
 For a specific test:
 
+    export PGSERVICEPARSER_SRC_DIR=$pwd
     python -m unittest test.test_lib.TestLib.test_remove_service
 
 """
@@ -25,6 +27,7 @@
     service_names,
     write_service,
     write_service_setting,
+    write_service_to_text,
 )
 from pgserviceparser.exceptions import ServiceFileNotFound, ServiceNotFound
 
@@ -49,7 +52,7 @@ def test_full_config(self):
         self.assertRaises(ServiceFileNotFound, full_config, "non_existing_file")
 
     def test_service_names(self):
-        self.assertEqual(service_names(), ["service_1", "service_2", "service_3"])
+        self.assertEqual(service_names(), ["service_1", "service_2", "service_3", "service_4"])
 
     def test_service_config(self):
         self.assertRaises(ServiceNotFound, service_config, "non_existing_service")
@@ -109,6 +112,13 @@ def test_write_service(self):
         self.assertIsInstance(new_srv, dict)
         self.assertIn("service_4", service_names())
 
+    def test_write_service_to_text(self):
+        config_4 = service_config("service_4")
+        res = write_service_to_text("service_4", config_4)
+        expected = "[service_4]\nhost=my-project-db-65b82f87-f737-4d69-8cf4-1dd7cd8.withoutclouds.com\ndbname=db_4 # My comment\nport=4444\nuser=user_4\npassword=pwd_%4 # Test for issue #46\nsslkey=/home/s.key"
+
+        self.assertEqual(res, expected)
+
     def test_create_pgservice_file(self):
         # Create a new service file
         new_service_file_path: Path = PGSERVICEPARSER_SRC_PATH / "test" / "data" / "notexisting" / "pgservice.conf"