fix: fix failing tests (#128)

My first intention was to use your library in my production config
handling, to take advantage of classes in the code when reading config
data. (Thank you for your work!)

My issue was that I had "null" values in my yaml file and dataconf
cannot handle them today as far as I've seen. However I removed those
null values and decided to see how I can improve dataconf to handle
null.

To be able to do that first I would like to fix failing unit tests.

I'm working on Win 10, using python 3.9.6.

---------

Co-authored-by: Szeverenyi Zoltan (uif77145) <[email protected]>
Co-authored-by: Teo Stocco <[email protected]>

pyproject.toml

@@ -33,7 +33,7 @@ dataconf = 'dataconf.cli:run'
 
 [tool.poetry.dependencies]
 python = "^3.8"
-pyhocon = "0.3.60"
+pyhocon = "0.3.59"
 python-dateutil = "^2.8.2"
 PyYAML = "^6.0.1"
 pyparsing = "2.4.7"

tests/test_regression.py

@@ -142,9 +142,9 @@ def test_url(self) -> None:
         class A:
             url: str
 
-        os.environ["p_url"] = "https://github.com/zifeo/dataconf"
-        assert dataconf.env("p", A) == A(url="https://github.com/zifeo/dataconf")
-        os.environ.pop("p_url")
+        os.environ["P_URL"] = "https://github.com/zifeo/dataconf"
+        assert dataconf.env("P", A) == A(url="https://github.com/zifeo/dataconf")
+        os.environ.pop("P_URL")
 
     def test_env_var_cast_35(self) -> None:
         @dataclass
@@ -164,16 +164,21 @@ class Example:
             hello=None, world="monde", float_num=1.3, int_num=2, bool_var=True
         )
 
-    def test_dump_fail_54(self):
+    @pytest.fixture
+    def named_temporary_file(self):
+        tfile = tempfile.NamedTemporaryFile(delete=False)
+        yield tfile
+        tfile.close()
+
+    def test_dump_fail_54(self, named_temporary_file):
         @dataclass
         class Config:
             experiment_name: str
 
         original = Config("test_dump")
 
-        with tempfile.NamedTemporaryFile() as f:
-            dataconf.dump(f.name, original, out="yaml")
-            validate = dataconf.file(f.name, Config)
+        dataconf.dump(named_temporary_file.name, original, out="yaml")
+        validate = dataconf.file(named_temporary_file.name, Config)
 
         assert original == validate