travis: fix backends

Add cdrdao (we might want to stuff with it later on).
Mock libdiscid > 0.2.2 (with isrc support).

.travis.yml

@@ -7,7 +7,7 @@ python:
  - "pypy"
 before_install:
  - sudo apt-get update -qq
- - sudo apt-get install -qq libdiscid0
+ - sudo apt-get install -qq libdiscid0 cdrdao
 install: pip install -q --use-mirrors discid musicbrainzngs
 script: python setup.py test
 branches:

isrcsubmit.py

@@ -313,6 +313,7 @@ def has_program(program, strict=False):
 def find_backend():
     """search for an available backend
     """
+    backend = None
     for prog in BACKENDS:
         if has_program(prog):
             backend = prog

test_isrcsubmit.py

@@ -155,6 +155,18 @@ def _read(device=None, features=[]):
 
 discid.read = _read
 
+_isrcsubmit_has_program = isrcsubmit.has_program
+
+def _has_program(program, strict=False):
+    if program == "libdiscid":
+        # we mock it anyways
+        # libdiscid >= 0.2.2 still needed to load discid
+        return True
+    else:
+        return _isrcsubmit_has_program(program, strict)
+
+isrcsubmit.has_program = _has_program
+
 
 # mock answers given by user
 # - - - - - - - - - - - - -