Don't duplicate project root in tests

tests/functional/utils.py

@@ -1,3 +1,4 @@
+import pytest
 import os
 import subprocess
 import shutil
@@ -5,9 +6,8 @@ from tempfile import mkdtemp
 from pathlib import Path
 import sys
 import pexpect
-import pytest
+from tests.utils import root
 
-root = str(Path(__file__).parent.parent.parent.resolve())
 bare = os.environ.get('BARE')
 enabled = os.environ.get('FUNCTIONAL')
 
@@ -18,7 +18,7 @@ def build_container(tag, dockerfile):
         with Path(tmpdir).joinpath('Dockerfile').open('w') as file:
             file.write(dockerfile)
         if subprocess.call(['docker', 'build', '--tag={}'.format(tag), tmpdir],
-                           cwd=root) != 0:
+                           cwd=str(root)) != 0:
             raise Exception("Can't build a container")
     finally:
         shutil.rmtree(tmpdir)

tests/test_readme.py

@@ -1,12 +1,11 @@
-from pathlib import Path
+from tests.utils import root
 
 
 def test_readme():
-    project_root = Path(__file__).parent.parent
-    with project_root.joinpath('README.md').open() as f:
+    with root.joinpath('README.md').open() as f:
         readme = f.read()
 
-        bundled = project_root \
+        bundled = root \
             .joinpath('thefuck') \
             .joinpath('rules') \
             .glob('*.py')

tests/utils.py

@@ -1,3 +1,4 @@
+from pathlib import Path
 from thefuck import types
 from thefuck.conf import DEFAULT_PRIORITY
 
@@ -19,3 +20,6 @@ def Rule(name='', match=lambda *_: True,
 
 def CorrectedCommand(script='', side_effect=None, priority=DEFAULT_PRIORITY):
     return types.CorrectedCommand(script, side_effect, priority)
+
+
+root = Path(__file__).parent.parent.resolve()