Add unit tests for swift.proxy.controllers.base

This patch adds more unit tests to diminish missing pieces
of the coverage in the proxy_controllers_base unit test.

Change-Id: I85ba1955c681cc9d5b2a70ac31155678d2e5b6fd

swift/proxy/controllers/base.py

@@ -1287,7 +1287,7 @@ class Controller(object):
     def generate_request_headers(self, orig_req=None, additional=None,
                                  transfer=False):
         """
-        Create a list of headers to be used in backend requets
+        Create a list of headers to be used in backend requests
 
         :param orig_req: the original request sent by the client to the proxy
         :param additional: additional headers to send to the backend

test/unit/proxy/controllers/test_base.py

@@ -452,6 +452,28 @@ class TestFuncs(unittest.TestCase):
             resp = base.OPTIONS(req)
         self.assertEqual(resp.status_int, 200)
 
+    def test_options_with_null_allow_origin(self):
+        base = Controller(self.app)
+        base.account_name = 'a'
+        base.container_name = 'c'
+
+        def my_container_info(*args):
+            return {
+                'cors': {
+                    'allow_origin': '*',
+                }
+            }
+        base.container_info = my_container_info
+        req = Request.blank('/v1/a/c/o',
+                            environ={'swift.cache': FakeCache()},
+                            headers={'Origin': '*',
+                                     'Access-Control-Request-Method': 'GET'})
+
+        with patch('swift.proxy.controllers.base.'
+                   'http_connect', fake_http_connect(200)):
+            resp = base.OPTIONS(req)
+        self.assertEqual(resp.status_int, 200)
+
     def test_options_unauthorized(self):
         base = Controller(self.app)
         base.account_name = 'a'
@@ -507,6 +529,16 @@ class TestFuncs(unittest.TestCase):
             resp,
             headers_to_container_info(headers.items(), 200))
 
+    def test_container_info_without_req(self):
+        base = Controller(self.app)
+        base.account_name = 'a'
+        base.container_name = 'c'
+
+        container_info = \
+            base.container_info(base.account_name,
+                                base.container_name)
+        self.assertEqual(container_info['status'], 0)
+
     def test_headers_to_account_info_missing(self):
         resp = headers_to_account_info({}, 404)
         self.assertEqual(resp['status'], 404)
@@ -684,6 +716,19 @@ class TestFuncs(unittest.TestCase):
         for k, v in bad_hdrs.items():
             self.assertFalse(k.lower() in dst_headers)
 
+    def test_generate_request_headers_with_no_orig_req(self):
+        base = Controller(self.app)
+        src_headers = {'x-remove-base-meta-owner': 'x',
+                       'x-base-meta-size': '151M',
+                       'new-owner': 'Kun'}
+        dst_headers = base.generate_request_headers(None,
+                                                    additional=src_headers)
+        expected_headers = {'x-base-meta-size': '151M',
+                            'connection': 'close'}
+        for k, v in expected_headers.items():
+            self.assertDictContainsSubset(expected_headers, dst_headers)
+        self.assertEqual('', dst_headers['Referer'])
+
     def test_client_chunk_size(self):
 
         class TestSource(object):