Mojo: Move mojom (python) unittests to mojom_tests package and combine errors.

Adds a base class for errors, so that the top-level doesn't have to know
about different kinds of errors. (Still to do: Factor out ProcessFile(),
so that it can throw appropriate errors too. This will make it properly
unit-test-able.)

There are two reasons to move the unit tests:
* Relative imports: It's very convenient to be able to do "python
  foo_unittests.py". I want to be able to use a relative import (i.e.,
  from parser.py, do "from ..error import Error"), but this only works
  if Python thinks I'm in a package (which it won't, if
  parser_unittests.py lives right beside parser.py, and is just doing
  "import parser").
* "Hygiene": Probably, if one were foolish enough to install the mojom
  package in a "global" location, one wouldn't want to install the
  tests. (Moreover, one probably doesn't typically want to import unit
  tests.)
Note that Python unittests (using the unittest package) have to be
importable, so it's natural that they live under pylib.

Also fix/suppress various pylint warnings. (Note: generate/ still has
some nontrivial pylint warnings, which need more attention.)

R=darin@chromium.org

Review URL: https://codereview.chromium.org/247933004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@265959 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 2 deletions

diff --git a/mojo/tools/run_mojo_python_tests.py b/mojo/tools/run_mojo_python_tests.py
index 48b723c..2bee0ab 100755
--- a/mojo/tools/run_mojo_python_tests.py
+++ b/mojo/tools/run_mojo_python_tests.py
@@ -1,4 +1,4 @@
-#!/bin/python
+#!/usr/bin/env python
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
@@ -28,7 +28,7 @@ def main():
   loader = unittest.loader.TestLoader()
   print "Running Python unit tests under mojo/public/tools/bindings/pylib ..."
   suite = loader.discover(os.path.join(chromium_src_dir, 'mojo', 'public',
-                                      'tools', 'bindings', 'pylib'),
+                                       'tools', 'bindings', 'pylib'),
                           pattern='*_unittest.py')
 
   runner = unittest.runner.TextTestRunner(verbosity=(options.verbose+1))