tests: extend server_url coverage with parametrized test.

Author: pushkarscripts

tests/model/test_model.py

@@ -118,6 +118,28 @@ def test_init(
         # zulip_extra_emoji replaces all other emoji types for 'zulip' emoji.
         assert model.active_emoji_data["zulip"]["type"] == "zulip_extra_emoji"
 
+    @pytest.mark.parametrize(
+        "base_url, expected_server_url",
+        [
+            ("chat.zulip.zulip", ":///"),
+            ("https://chat.zulip.org", "https://chat.zulip.org/"),
+            ("http://localhost:9991", "http://localhost:9991/"),
+        ],
+    )
+    def test_server_url_generation(
+        self, mocker, initial_data, user_profile, base_url, expected_server_url
+    ):
+        self.client.base_url = base_url
+        mocker.patch(MODEL + ".get_messages", return_value="")
+        self.client.register.return_value = initial_data
+        self.client.get_profile.return_value = user_profile
+        mocker.patch(MODEL + "._update_users_data_from_initial_data")
+        mocker.patch(MODULE + ".classify_unread_counts")
+
+        model = Model(self.controller)
+
+        assert model.server_url == expected_server_url
+
     @pytest.mark.parametrize(
         "sptn, expected_sptn_value",
         [(None, True), (True, True), (False, False)],