We have a working test harness.

bin/git-lint

@@ -1,39 +0,0 @@
-#!/usr/bin/env python
-import git_lint
-
-def main(*args):
-    if git_lint.git_base is None:
-        sys.exit(_('A git repository was not found.'))
-
-    (cmdline, filenames, excluded_commands) = git_lint.make_rational_options(git_lint.OPTIONS_LIST, args)
-
-    if len(excluded_commands) > 0:
-        print(_('These command line options were ignored due to option precedence.'))
-        for exc in excluded_commands:
-            print("\t{}".format(exc))
-
-    try:
-        config = git_lint.get_config(cmdline, git_lint.git_base)
-
-        if 'help' in cmdline:
-            git_lint.print_help(OPTIONS_LIST, NAME)
-            return 0
-
-        if 'version' in cmdline:
-            git_lint.print_version(NAME, VERSION)
-            return 0
-
-        if 'linters' in cmdline:
-            git_lint.print_linters(config)
-            return 0
-
-        return git_lint.run_gitlint(cmdline, config, filenames)
-
-    except getopt.GetoptError as err:
-        git_lint.print_help(OPTIONS_LIST)
-        return 1
-
-
-if __name__ == '__main__':
-    import sys
-    sys.exit(main(*sys.argv))

bin/pre-commit

@@ -1,18 +1,17 @@
 #!/usr/bin/env python
-import git_lint
+from git_lint import load_config, run_linters, git_base
 
 def main(*args):
-    if git_lint.git_base is None:
+    if git_base is None:
         sys.exit(_('A git repository was not found.'))
 
     pre_commit_config = {
         'staging': True,
-        'base': True,
+        'base': True
-        'all': True
     }
 
-    config = git_lint.get_config(pre_commit_config, git_lint.git_base)
+    config = load_config(pre_commit_config, git_base)
-    return git_lint.run_gitlint(pre_commit_config, config, [])
+    return run_linters(pre_commit_config, config, [])
 
 
 if __name__ == '__main__':

git_lint/git_lint.py

@@ -4,6 +4,7 @@ import getopt
 import gettext
 import operator
 import os
+import shutil
 import re
 import subprocess
 import sys
@@ -43,7 +44,7 @@ def find_config_file(options, base):
             sys.exit(_('Configuration file not found: {}\n').format(config))
         return configpath
 
-    home = os.path.join(os.environ.get('HOME'))
+    home = os.environ.get('HOME')
     possibles = (os.path.join(base, '.git-lint'),
                  os.path.join(base, '.git-lint/config'),
                  os.path.join(home, '.git-lint'),
@@ -51,7 +52,7 @@ def find_config_file(options, base):
 
     matches = [p for p in possibles if os.path.isfile(p)]
     if len(matches) == 0:
-        sys.exit(_('No configuration file found'))
+        sys.exit(_('No configuration file found, tried: {}').format(':'.join(possibles)))
 
     return matches[0]
 
@@ -187,11 +188,7 @@ def executable_exists(script, label):
     if scriptname.startswith('/'):
         return (is_executable(scriptname) and scriptname) or None
 
-    possibles = [path for path in
+    return shutil.which(scriptname)
-                 [os.path.join(path, scriptname)
-                  for path in os.environ.get('PATH').split(':')]
-                 if is_executable(path)]
-    return (len(possibles) and possibles.pop(0)) or False
 
 
 def get_working_linter_names(config):

tests/test_git_lint.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
+from __future__ import print_function
 
 """
 test_git_lint
@@ -9,20 +10,51 @@ Tests for `git_lint` module.
 """
 
 import pytest
-
+import copy
-
+import os
+import shutil
+import subprocess
+import pprint
 from git_lint import git_lint
 
+environment = copy.copy(os.environ)
+environment.update({
+    'LANG': 'C',
+    'LC_ALL': 'C',
+    'PAGER': 'cat',
+    'TZ': 'UTC',
+    'EDITOR': ':',
+    'GIT_AUTHOR_EMAIL': 'author@example.com',
+    'GIT_AUTHOR_NAME': '"A U Thor"',
+    'GIT_COMMITTER_EMAIL': 'committer@example.com',
+    'GIT_COMMITTER_NAME': '"C O Mitter"',
+    'GIT_MERGE_VERBOSITY': '5',
+    'GIT_MERGE_AUTOEDIT': 'no'
+})
+
+for key in ['XDF_CONFIG_HOME', 'GITPERLLIB', 'CDPATH', 
+            'GREP_OPTIONS', 'UNZIP']:
+    environment.pop(key, None)
+
+    
 class TestGit_lint(object):
 
     @classmethod
     def setup_class(cls):
-        pass
+        if os.path.exists('t'):
+            shutil.rmtree('t')
+        os.mkdir('t')
+        shutil.copy('.git-lint', 't')
+        os.chdir('t')
+        subprocess.check_output('git init', shell=True, env=environment)
 
-    def test_something(self):
+
-        pass
+    def test_itruns(self):
+        ret = subprocess.check_output('git lint -v', shell=True, env=environment)
+        assert ret.startswith('git-lint')
 
     @classmethod
     def teardown_class(cls):
-        pass
+        os.chdir('..')
+        shutil.rmtree('t')
 

tox.ini

@@ -8,6 +8,7 @@ deps =
     -r{toxinidir}/requirements_dev.txt
 commands =
     py.test --basetemp={envtmpdir}
+passenv = HOME                    
 
 
 ; If you want to make tox run the tests with the same versions, create a