Add tests

(cherry picked from commit 70061c2)

tests/test_util.py

@@ -11,6 +11,7 @@
 import yaml
 
 from sinol_make import util, configure_parsers
+from sinol_make.helpers import paths
 from tests import util as test_util
 from tests.fixtures import create_package
 from tests.commands.run import util as run_util
@@ -79,6 +80,9 @@ def test_check_version(**kwargs):
     version_file = data_dir.joinpath("version")
     if not data_dir.is_dir():
         data_dir.mkdir()
+    data_dir.chmod(0o777)
+    if version_file.is_file():
+        version_file.unlink()
 
     # Test correct request
     mocker.get("https://pypi.python.org/pypi/sinol-make/json", json={"info": {"version": "1.0.0"}})
@@ -97,6 +101,37 @@ def test_check_version(**kwargs):
     util.check_version()
     assert not version_file.is_file()
 
+    with tempfile.TemporaryDirectory() as tmpdir:
+        os.chdir(tmpdir)
+        with open("config.yml", "w") as config_file:
+            config_file.write("")
+
+        # No permission to write
+        version_file.write_text("0.0.0")
+        version_file.chmod(0o000)
+        mocker.get("https://pypi.python.org/pypi/sinol-make/json", json={"info": {"version": "1.0.0"}})
+        util.check_version()
+        assert version_file.is_file()
+        version_file.chmod(0o777)
+        assert version_file.read_text() == "0.0.0"
+        assert os.path.exists(paths.get_cache_path("sinol_make_version"))
+        with open(paths.get_cache_path("sinol_make_version"), "r") as f:
+            assert f.read() == "1.0.0"
+
+        # No permission to write to cache and data dir
+        with open(paths.get_cache_path("sinol_make_version"), "w") as f:
+            f.write("0.0.0")
+        os.chmod(paths.get_cache_path("sinol_make_version"), 0o000)
+        os.chmod(paths.get_cache_path(), 0o000)
+        os.chmod(data_dir, 0o000)
+        version_file.chmod(0o000)
+        mocker.get("https://pypi.python.org/pypi/sinol-make/json", json={"info": {"version": "1.0.0"}})
+        util.check_version()
+        os.chmod(data_dir, 0o777)
+        version_file.chmod(0o777)
+        assert version_file.is_file()
+        assert version_file.read_text() == "0.0.0"
+
 
 @pytest.mark.parametrize("create_package", [test_util.get_simple_package_path()], indirect=True)
 def test_version_change(create_package):