Added dependency check (against nose)

README.md

@@ -68,7 +68,8 @@ with a total archive of more than 100MB.
     [ ] Extend the test utilities to other languages
     [ ] Add an "ignore" option to ignore other files (logs, sqlite database,
         image files, etc)
-    [ ] Check the only default dependency: ``nosetests``.
+    [ ] Check other pythonic dependencies (django, py.test). Won't be possible
+        for non-python test-programs, though
 
 ### Done
 
@@ -85,4 +86,5 @@ with a total archive of more than 100MB.
     [X] OBSOLETE: Add the possibility to run a custom command.
         (eg. ``python manage.py test myapp.MyTest``)
     [X] Erase the custom command option. Too dangerous
+    [X] Check the only default dependency: ``nosetests``.
 

tdaemon.py

@@ -10,6 +10,7 @@
 file for more details.
 """
 
+
 import sys
 import os
 from stat import *
@@ -47,6 +48,8 @@ def __init__(self, file_path, test_program, debug=False):
         self.file_list = self.walk(file_path)
         self.test_program = test_program
 
+        self.check_dependencies()
+
         self.debug = debug
 
     def check_configuration(self, file_path, test_program):
@@ -58,6 +61,14 @@ def check_configuration(self, file_path, test_program):
                 os.path.abspath(file_path)
             )
 
+    def check_dependencies(self):
+        "Checks if the test program is available in the python environnement"
+        if self.test_program == 'nose':
+            try:
+                import nose
+            except ImportError:
+                sys.exit('Nosetests is not available on your system.'
+                ' Please install it and try to run it again')
 
     def include(self, path):
         """Returns `True` if the file is not ignored"""