Skip git tests when git is unavailable

Author: mgorny

testing/test_file_finder.py

@@ -9,7 +9,10 @@
 @pytest.fixture(params=["git", "hg"])
 def inwd(request, wd, monkeypatch):
     if request.param == "git":
-        wd("git init")
+        try:
+            wd("git init")
+        except FileNotFoundError:
+            pytest.skip("git executable not found")
         wd("git config user.email [email protected]")
         wd('git config user.name "a test"')
         wd.add_command = "git add ."

testing/test_git.py

@@ -1,12 +1,19 @@
 import sys
 
 from setuptools_scm import integration
-from setuptools_scm.utils import do
+from setuptools_scm.utils import do, has_command
 from setuptools_scm import git
 import pytest
 from datetime import datetime
 from os.path import join as opj
 from setuptools_scm.file_finder_git import git_find_files
+import warnings
+
+
+with warnings.catch_warnings():
+    warnings.filterwarnings("ignore")
+    if not has_command("git"):
+        pytestmark = pytest.mark.skip(reason="git executable not found")
 
 
 @pytest.fixture

testing/test_integration.py

@@ -7,7 +7,11 @@
 
 @pytest.fixture
 def wd(wd):
-    wd("git init")
+    try:
+        wd("git init")
+    except FileNotFoundError:
+        pytest.skip("git executable not found")
+
     wd("git config user.email [email protected]")
     wd('git config user.name "a test"')
     wd.add_command = "git add ."

testing/test_regressions.py

@@ -27,9 +27,13 @@ def test_pkginfo_noscmroot(tmpdir, monkeypatch):
     res = do((sys.executable, "setup.py", "--version"), p)
     assert res == "1.0"
 
-    do("git init", p.dirpath())
-    res = do((sys.executable, "setup.py", "--version"), p)
-    assert res == "0.1.dev0"
+    try:
+        do("git init", p.dirpath())
+    except FileNotFoundError:
+        pass
+    else:
+        res = do((sys.executable, "setup.py", "--version"), p)
+        assert res == "0.1.dev0"
 
 
 def test_pip_egg_info(tmpdir, monkeypatch):