Use an env var as the default base_url if one exists (#2)

Author: Matt Brandt

README.rst

@@ -69,6 +69,11 @@ You can specify the base URL using a `configuration file`_:
   [pytest]
   base_url = http://www.example.com
 
+Using an Environment Variable
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+You can specify the base URL by setting the ``PYTEST_BASE_URL`` environment variable.
+
 Using a Fixture
 ^^^^^^^^^^^^^^^
 

pytest_base_url/plugin.py

@@ -45,6 +45,7 @@ def pytest_addoption(parser):
     parser.addoption(
         '--base-url',
         metavar='url',
+        default=os.getenv('PYTEST_BASE_URL', None),
         help='base url for the application under test.')
     parser.addoption(
         '--verify-base-url',

tests/test_base_url.py

@@ -54,3 +54,15 @@ def test_skip_config(): pass
     """)
     result = testdir.runpytest()
     assert result.ret == 0
+
+
+def test_env_var_set(testdir, monkeypatch):
+    testdir.makepyfile("""
+        def test_config(request, base_url):
+            assert request.config.getvalue('base_url')
+            assert base_url == 'yeehaw'
+    """)
+    monkeypatch.setenv('PYTEST_BASE_URL', 'yeehaw')
+    reprec = testdir.inline_run()
+    passed, skipped, failed = reprec.listoutcomes()
+    assert len(passed) == 1