Improve test coverage

Saurabh Kumar · Saurabh Kumar · commit f8bd0c6c8390 · 2015-11-20T10:23:25.000+05:30
diff --git a/Makefile b/Makefile
@@ -19,3 +19,14 @@ release: clean
 sdist: clean
 	python setup.py sdist
 	ls -l dist
+
+test:
+	pip install -e .
+	py.test tests/
+
+coverage:
+	coverage run --source=dotenv.py --omit='*tests*' -m py.test tests/ -v --tb=native
+	coverage report
+
+coverage-html: coverage
+	coverage html
diff --git a/dotenv.py b/dotenv.py
@@ -15,7 +15,7 @@ def load_dotenv(dotenv_path):
     Read a .env file and load into os.environ.
     """
     if not os.path.exists(dotenv_path):
-        warnings.warn("can't read %s - it doesn't exist." % dotenv_path)
+        warnings.warn("Not loading %s - it doesn't exist." % dotenv_path)
         return None
     for k, v in parse_dotenv(dotenv_path):
         os.environ.setdefault(k, v)
diff --git a/tests/test_core.py b/tests/test_core.py
@@ -0,0 +1,12 @@
+import warnings
+
+from dotenv import load_dotenv
+
+
+def test_warns_if_file_does_not_exist():
+    with warnings.catch_warnings(record=True) as w:
+        load_dotenv('.does_not_exist')
+
+        assert len(w) == 1
+        assert w[0].category is UserWarning
+        assert str(w[0].message) == "Not loading .does_not_exist - it doesn't exist."
