testsuite: Add tests for converter bot in contrib_bots.

Remove previous unittest file for converter bot. Add new
test file which is in accordance with the test-suite famework
developed for contrib_bots.

Since 'coverter' folder is now a package (addition of __init__.py),
modify converter.py to import utils.py from the same package.

contrib_bots/bots/converter/converter.py

@@ -8,7 +8,7 @@ import importlib
 import sys
 from math import log10, floor
 
-from . import utils
+import utils
 import re
 
 def is_float(value):

contrib_bots/bots/converter/test_converter.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+from __future__ import absolute_import
+from __future__ import print_function
+
+import os
+import sys
+
+our_dir = os.path.dirname(os.path.abspath(__file__))
+# For dev setups, we can find the API in the repo itself.
+if os.path.exists(os.path.join(our_dir, '..')):
+    sys.path.insert(0, '..')
+from bots_test_lib import BotTestCase
+
+class TestConverterBot(BotTestCase):
+    bot_name = "converter"
+
+    def test_bot(self):
+        self.assert_bot_output(
+            {'content': "2 m cm", 'type': "private", 'sender_email': "foo@gmail.com"},
+            "2.0 m = 200.0 cm\n"
+        )
+        self.assert_bot_output(
+            {'content': "12 celsius fahrenheit", 'type': "stream", 'display_recipient': "foo", 'subject': "foo"},
+            "12.0 celsius = 53.600054 fahrenheit\n"
+        )
+        self.assert_bot_output(
+            {'content': "0.002 kilometer millimile", 'type': "stream", 'display_recipient': "foo", 'subject': "foo"},
+            "0.002 kilometer = 1.2427424 millimile\n"
+        )
+        self.assert_bot_output(
+            {'content': "3 megabyte kilobit", 'type': "stream", 'display_recipient': "foo", 'subject': "foo"},
+            "3.0 megabyte = 24576.0 kilobit\n"
+        )
+        self.assert_bot_output(
+            {'content': "foo bar", 'type': "stream", 'display_recipient': "foo", 'subject': "foo"},
+            ('Too few arguments given. Enter `@convert help` '
+             'for help on using the converter.\n')
+        )

contrib_bots/bots/converter/tests.py

@@ -1,45 +0,0 @@
-from __future__ import absolute_import
-from . import converter
-
-def test():
-    for cmd, expected_response in sample_conversation():
-        message = {'content': cmd, 'subject': 'foo',
-                   'display_recipient': 'bar'}
-
-        class ClientDummy(object):
-            def __init__(self):
-                self.output = ''
-
-            def send_message(self, params):
-                self.output = params['content']
-        handler = converter.ConverterHandler()
-        client_dummy = ClientDummy()
-        handler.handle_message(message, client_dummy, '')
-        if client_dummy.output != expected_response:
-            raise AssertionError('''
-                cmd: %s
-                expected: %s
-                but got : %s
-                ''' % (cmd, expected_response, client_dummy.output))
-
-def sample_conversation():
-    return [
-        ('@convert 2 m cm', '2.0 m = 200.0 cm\n'),
-        ('@converter 2 m cm', ''),
-        ('@convert 12 celsius fahrenheit',
-         '12.0 celsius = 53.600054 fahrenheit\n'),
-        ('@convert 0.002 kilometer millimile',
-         '0.002 kilometer = 1.2427424 millimile\n'),
-        ('@convert 3 megabyte kilobit',
-         '3.0 megabyte = 24576.0 kilobit\n'),
-        (('foo @convert 120.5 g lb bar baz.\n'
-          'baz bar bar @convert 22 k c lorem ipsum dolor'),
-         ('1. conversion: 120.5 g = 0.26565703 lb\n'
-          '2. conversion: 22.0 k = -251.15 c\n')),
-        ('@convert foo bar',
-         ('Too few arguments given. Enter `@convert help` '
-          'for help on using the converter.\n')),
-    ]
-
-if __name__ == '__main__':
-    test()