improvements to calc module

* .wa output cleanup (remove ugly html entities in places)
* add some more test cases

modules/test/test_calc.py

@@ -1,3 +1,4 @@
+# coding=utf-8
 """
 test_calc.py - tests for the calc module
 author: mutantmonkey <mutantmonkey@mutantmonkey.in>
@@ -18,6 +19,12 @@ class TestCalc(unittest.TestCase):
 
         self.phenny.say.assert_called_once_with('25')
 
+    def test_c_sqrt(self):
+        input = Mock(group=lambda x: '4^(1/2)')
+        c(self.phenny, input)
+
+        self.phenny.say.assert_called_once_with('2')
+
     @unittest.skip('Not supported with DuckDuckGo')
     def test_c_scientific(self):
         input = Mock(group=lambda x: '2^64')
@@ -35,7 +42,7 @@ class TestCalc(unittest.TestCase):
         input = Mock(group=lambda x: 'airspeed of an unladen swallow')
         wa(self.phenny, input)
 
-        self.phenny.say.assert_called_once_with('25 mph  (miles per hour), '\
+        self.phenny.say.assert_called_once_with('25 mph  (miles per hour); '\
                 '(asked, but not answered, about a general swallow in the '\
                 '1975 film Monty Python and the Holy Grail)')
 
@@ -45,6 +52,18 @@ class TestCalc(unittest.TestCase):
 
         self.phenny.say.assert_called_once_with('4')
 
+    def test_wa_convert_deg(self):
+        input = Mock(group=lambda x: '30 degrees C in F')
+        wa(self.phenny, input)
+
+        self.phenny.say.assert_called_once_with('86 °F  (degrees Fahrenheit)')
+
+    def test_wa_convert_bytes(self):
+        input = Mock(group=lambda x: '5 MB/s in Mbps')
+        wa(self.phenny, input)
+
+        self.phenny.say.assert_called_once_with(
+            '40 Mb/s  (megabits per second)')
 
     def test_wa_none(self):
         input = Mock(group=lambda x: "jajoajaj ojewphjqo I!tj")