diff --git a/zulip_bots/zulip_bots/bots/converter/test_converter.py b/zulip_bots/zulip_bots/bots/converter/test_converter.py
index c609c18..5328b9d 100755
--- a/zulip_bots/zulip_bots/bots/converter/test_converter.py
+++ b/zulip_bots/zulip_bots/bots/converter/test_converter.py
@@ -1,5 +1,7 @@
 from zulip_bots.test_lib import BotTestCase
 
+from zulip_bots.bots.converter import utils
+
 class TestConverterBot(BotTestCase):
     bot_name = "converter"
 
@@ -13,5 +15,17 @@ class TestConverterBot(BotTestCase):
             ("12.0 celsius fahrenheit", "12.0 celsius = 53.600054 fahrenheit\n"),
             ("0.002 kilometer millimile", "0.002 kilometer = 1.2427424 millimile\n"),
             ("3 megabyte kilobit", "3 megabyte = 24576.0 kilobit\n"),
+            ("foo m cm", "`foo` is not a valid number. " + utils.QUICK_HELP + "\n"),
+            ("@convert help", "1. conversion: Too few arguments given. "
+                              "Enter `@convert help` for help on using the converter.\n"
+                              "2. conversion: " + utils.HELP_MESSAGE + "\n"),
+            ("2 celsius kilometer", "`Meter` and `Celsius` are not from the same category. "
+                                    "Enter `@convert help` for help on using the converter.\n"),
+            ("2 foo kilometer", "`foo` is not a valid unit."
+                                " Enter `@convert help` for help on using the converter.\n"),
+            ("2 kilometer foo", "`foo` is not a valid unit."
+                                "Enter `@convert help` for help on using the converter.\n"),
+
+
         ]
         self.verify_dialog(dialog)