Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

testing/util.py

@@ -45,20 +45,6 @@ xfailif_windows_no_ruby = pytest.mark.xfail(
 xfailif_windows = pytest.mark.xfail(os.name == 'nt', reason='windows')
 
 
-def supports_venv():  # pragma: no cover (platform specific)
-    try:
-        __import__('ensurepip')
-        __import__('venv')
-        return True
-    except ImportError:
-        return False
-
-
-xfailif_no_venv = pytest.mark.xfail(
-    not supports_venv(), reason='Does not support venv module',
-)
-
-
 def run_opts(
         all_files=False,
         files=(),
@@ -103,10 +89,12 @@ def cwd(path):
         os.chdir(original_cwd)
 
 
-def git_commit(*args, fn=cmd_output, msg='commit!', **kwargs):
+def git_commit(*args, fn=cmd_output, msg='commit!', all_files=True, **kwargs):
     kwargs.setdefault('stderr', subprocess.STDOUT)
 
-    cmd = ('git', 'commit', '--allow-empty', '--no-gpg-sign', '-a') + args
+    cmd = ('git', 'commit', '--allow-empty', '--no-gpg-sign', *args)
+    if all_files:  # allow skipping `-a` with `all_files=False`
+        cmd += ('-a',)
     if msg is not None:  # allow skipping `-m` with `msg=None`
         cmd += ('-m', msg)
     ret, out, _ = fn(*cmd, **kwargs)