Add test for option.from_ini() missing envs not required

Author: rmk135

tests/unit/providers/test_configuration_py2_py3.py

@@ -654,6 +654,31 @@ def test_missing_envs(self):
  self.assertEqual(self.config.section1.value1(), '')
  self.assertEqual(self.config.section1.value2(), '/path')
 
+ def test_option_missing_envs(self):
+ del os.environ['CONFIG_TEST_ENV']
+ del os.environ['CONFIG_TEST_PATH']
+
+ self.config.option.from_ini(self.config_file)
+
+ self.assertEqual(
+ self.config.option(),
+ {
+ 'section1': {
+ 'value1': '',
+ 'value2': '/path',
+ },
+ },
+ )
+ self.assertEqual(
+ self.config.option.section1(),
+ {
+ 'value1': '',
+ 'value2': '/path',
+ },
+ )
+ self.assertEqual(self.config.option.section1.value1(), '')
+ self.assertEqual(self.config.option.section1.value2(), '/path')
+
  def test_default_values(self):
  os.environ['DEFINED'] = 'defined'
  self.addCleanup(os.environ.pop, 'DEFINED')