Fix coverage calculation

.travis.yml

@@ -11,7 +11,7 @@ install:
   - pip install coverage
 script:
   - python -m unittest discover
-  - coverage run cheat/cheat.py git
-  - coverage report -m cheat/cheat.py
+  - coverage run -m unittest discover
+  - coverage report -m
 after_success:
     coveralls

tests/test_main.py

@@ -25,6 +25,18 @@ def setUp(self):
         self.exit_1 = 1 << 8
         self.exit_2 = 2 << 8
 
+    def test_main_list(self):
+        """
+        Lazy testing of the main function.
+        Checks the exitcode if the list is displayed.
+        """
+
+        command = '/usr/bin/env python3 cheat/cheat.py --list > /dev/null'
+        status = os.system(command)
+
+        self.assertEqual(status, self.exit_0)
+
+
     def test_main_success(self):
         """
         Lazy testing of the main function.

tests/test_utils.py

@@ -33,3 +33,14 @@ def test_print_available_sheets(self):
         with patch('sys.stdout', new=StringIO()) as fake_out:
             u.print_available_sheets(self.directory)
             self.assertEqual(fake_out.getvalue(), expected_output)
+
+
+    def test_colors(self):
+        """
+        Test of the color class
+        """
+
+        expected_output = "\033[94m"
+        output = u.colors.DEFAULT
+
+        self.assertEqual(output, expected_output)