Presented hg_repo and git_repo as fixtures.

Closes #36

conftest.py

@@ -1,27 +1,13 @@
 import pytest
 
 import jaraco.path
-from jaraco import vcs
 
 
 @pytest.fixture(autouse=True)
 def _isolate_home(tmp_home_dir):
     """Isolate the tests from a developer's VCS config."""
 
 
-def _ensure_present(repo):
-    try:
-        repo.version()
-    except Exception:
-        pytest.skip()
-
-
-@pytest.fixture
-def temp_work_dir(tmp_path, monkeypatch):
-    monkeypatch.chdir(tmp_path)
-    return tmp_path
-
-
 rev1 = dict(
     bar=dict(
         baz="",
@@ -37,10 +23,8 @@ def temp_work_dir(tmp_path, monkeypatch):
 
 
 @pytest.fixture
-def hg_repo(temp_work_dir):
-    repo = vcs.Mercurial()
-    _ensure_present(repo)
-    repo._invoke('init', '.')
+def hg_repo(hg_repo):
+    repo = hg_repo
     jaraco.path.build(rev1)
     repo._invoke('addremove')
     repo._invoke('ci', '-m', 'committed')
@@ -50,12 +34,8 @@ def hg_repo(temp_work_dir):
 
 
 @pytest.fixture
-def git_repo(temp_work_dir):
-    repo = vcs.Git()
-    _ensure_present(repo)
-    repo._invoke('init')
-    repo._invoke('config', 'user.email', 'vip@example.com')
-    repo._invoke('config', 'user.name', 'Important User')
+def git_repo(git_repo):
+    repo = git_repo
     jaraco.path.build(rev1)
     repo._invoke('add', '.')
     repo._invoke('commit', '-m', 'committed')

jaraco/vcs/fixtures.py

@@ -0,0 +1,34 @@
+import pytest
+
+from .. import vcs
+
+
+def _ensure_present(repo):
+    try:
+        repo.version()
+    except Exception:
+        pytest.skip()
+
+
+@pytest.fixture
+def temp_work_dir(tmp_path, monkeypatch):
+    monkeypatch.chdir(tmp_path)
+    return tmp_path
+
+
+@pytest.fixture
+def hg_repo(temp_work_dir):
+    repo = vcs.Mercurial()
+    _ensure_present(repo)
+    repo._invoke('init', '.')
+    return repo
+
+
+@pytest.fixture
+def git_repo(temp_work_dir):
+    repo = vcs.Git()
+    _ensure_present(repo)
+    repo._invoke('init')
+    repo._invoke('config', 'user.email', 'vip@example.com')
+    repo._invoke('config', 'user.name', 'Important User')
+    return repo

newsfragments/36.feature.rst

@@ -0,0 +1 @@
+Presented hg_repo and git_repo as fixtures.

pyproject.toml

@@ -59,3 +59,6 @@ doc = [
 ]
 
 [tool.setuptools_scm]
+
+[project.entry-points]
+pytest11 = {"jaraco.vcs.fixtures" = "jaraco.vcs.fixtures"}