@@ -5,6 +5,7 @@ branch = True
 fail_under = 100
 show_missing = True
 omit =
+    google/cloud/__init__.py
     google/pubsub/__init__.py
 exclude_lines =
     # Re-enable the standard pragma
 
@@ -50,7 +50,7 @@ def __len__(self):
 
     @staticmethod
     @abc.abstractmethod
-    def make_lock():
+    def make_lock():  # pragma: NO COVER
         """Return a lock in the chosen concurrency model.
 
         Returns:
@@ -60,7 +60,7 @@ def make_lock():
 
     @property
     @abc.abstractmethod
-    def messages(self):
+    def messages(self):  # pragma: NO COVER
         """Return the messages currently in the batch.
 
         Returns:
@@ -70,7 +70,7 @@ def messages(self):
 
     @property
     @abc.abstractmethod
-    def size(self):
+    def size(self):  # pragma: NO COVER
         """Return the total size of all of the messages currently in the batch.
 
         The size includes any overhead of the actual ``PublishRequest`` that is
@@ -84,7 +84,7 @@ def size(self):
 
     @property
     @abc.abstractmethod
-    def settings(self):
+    def settings(self):  # pragma: NO COVER
         """Return the batch settings.
 
         Returns:
@@ -95,7 +95,7 @@ def settings(self):
 
     @property
     @abc.abstractmethod
-    def status(self):
+    def status(self):  # pragma: NO COVER
         """Return the status of this batch.
 
         Returns:
@@ -106,7 +106,7 @@ def status(self):
         """
         raise NotImplementedError
 
-    def cancel(self, cancellation_reason):
+    def cancel(self, cancellation_reason):  # pragma: NO COVER
         """Complete pending futures with an exception.
 
         This method must be called before publishing starts (ie: while the
@@ -119,7 +119,7 @@ def cancel(self, cancellation_reason):
         raise NotImplementedError
 
     @abc.abstractmethod
-    def publish(self, message):
+    def publish(self, message):  # pragma: NO COVER
         """Publish a single message.
 
         Add the given message to this object; this will cause it to be
 
@@ -24,7 +24,7 @@ class Sequencer(metaclass=abc.ABCMeta):
 
     @staticmethod
     @abc.abstractmethod
-    def is_finished(self):
+    def is_finished(self):  # pragma: NO COVER
         """ Whether the sequencer is finished and should be cleaned up.
 
             Returns:
@@ -34,7 +34,7 @@ def is_finished(self):
 
     @staticmethod
     @abc.abstractmethod
-    def unpause(self, message):
+    def unpause(self, message):  # pragma: NO COVER
         """ Unpauses this sequencer.
 
         Raises:
@@ -45,7 +45,7 @@ def unpause(self, message):
 
     @staticmethod
     @abc.abstractmethod
-    def publish(self, message, retry=None):
+    def publish(self, message, retry=None):  # pragma: NO COVER
         """ Publish message for this ordering key.
 
         Args:
 
@@ -49,14 +49,6 @@
 _raw_proto_pubbsub_message = gapic_types.PubsubMessage.pb()
 
 
-def _set_nested_value(container, value, keys):
-    current = container
-    for key in keys[:-1]:
-        current = current.setdefault(key, {})
-    current[keys[-1]] = value
-    return container
-
-
 @_gapic.add_methods(publisher_client.PublisherClient, blacklist=_BLACKLISTED_METHODS)
 class Client(object):
     """A publisher client for Google Cloud Pub/Sub.
 
@@ -258,7 +258,7 @@ def _would_overflow(self, message):
 
         return size_overflow or msg_count_overflow
 
-    def _load_info(self, message_count=None, total_bytes=None, reserved_bytes=None):
+    def _load_info(self, message_count=None, total_bytes=None):
         """Return the current flow control load information.
 
         The caller can optionally adjust some of the values to fit its reporting
@@ -271,8 +271,6 @@ def _load_info(self, message_count=None, total_bytes=None, reserved_bytes=None):
                 The value to override the current message count with.
             total_bytes (Optional[int]):
                 The value to override the current total bytes with.
-            reserved_bytes (Optional[int]):
-                The value to override the current number of reserved bytes with.
 
         Returns:
             str
@@ -285,13 +283,10 @@ def _load_info(self, message_count=None, total_bytes=None, reserved_bytes=None):
         if total_bytes is None:
             total_bytes = self._total_bytes
 
-        if reserved_bytes is None:
-            reserved_bytes = self._reserved_bytes
-
         return msg.format(
             message_count,
             self._settings.message_limit,
             total_bytes,
             self._settings.byte_limit,
-            reserved_bytes,
+            self._reserved_bytes,
         )
@@ -31,7 +31,7 @@ class Scheduler(metaclass=abc.ABCMeta):
 
     @property
     @abc.abstractmethod
-    def queue(self):
+    def queue(self):  # pragma: NO COVER
         """Queue: A concurrency-safe queue specific to the underlying
         concurrency implementation.
 
@@ -40,7 +40,7 @@ def queue(self):
         raise NotImplementedError
 
     @abc.abstractmethod
-    def schedule(self, callback, *args, **kwargs):
+    def schedule(self, callback, *args, **kwargs):  # pragma: NO COVER
         """Schedule the callback to be called asynchronously.
 
         Args:
@@ -54,7 +54,7 @@ def schedule(self, callback, *args, **kwargs):
         raise NotImplementedError
 
     @abc.abstractmethod
-    def shutdown(self, await_msg_callbacks=False):
+    def shutdown(self, await_msg_callbacks=False):  # pragma: NO COVER
         """Shuts down the scheduler and immediately end all pending callbacks.
 
         Args:
 
@@ -142,7 +142,7 @@
 )
 
 # Emit deprecation warning if return_immediately flag is set with synchronous pull.
-count = s.replace(
+s.replace(
     "google/pubsub_v1/services/subscriber/*client.py",
     r"import pkg_resources",
     "import warnings\n\g<0>",
@@ -170,6 +170,48 @@
 if count != 2:
     raise Exception("Too many or too few replacements in pull() methods.")
 
+# Silence deprecation warnings in pull() method flattened parameter tests.
+s.replace(
+    "tests/unit/gapic/pubsub_v1/test_subscriber.py",
+    "import mock",
+    "\g<0>\nimport warnings",
+)
+count = s.replace(
+    "tests/unit/gapic/pubsub_v1/test_subscriber.py",
+    textwrap.dedent(
+        r"""
+        ([^\n\S]+# Call the method with a truthy value for each flattened field,
+        [^\n\S]+# using the keyword arguments to the method\.)
+        \s+(client\.pull\(.*?\))"""
+    ),
+    """\n\g<1>
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", category=DeprecationWarning)
+            \g<2>""",
+    flags = re.MULTILINE | re.DOTALL,
+)
+
+if count < 1:
+    raise Exception("Catch warnings replacement failed.")
+
+count = s.replace(
+    "tests/unit/gapic/pubsub_v1/test_subscriber.py",
+    textwrap.dedent(
+        r"""
+        ([^\n\S]+# Call the method with a truthy value for each flattened field,
+        [^\n\S]+# using the keyword arguments to the method\.)
+        \s+response = (await client\.pull\(.*?\))"""
+    ),
+    """\n\g<1>
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", category=DeprecationWarning)
+            \g<2>""",
+    flags = re.MULTILINE | re.DOTALL,
+)
+
+if count < 1:
+    raise Exception("Catch warnings replacement failed.")
+
 # Make sure that client library version is present in user agent header.
 s.replace(
     [
@@ -206,13 +248,21 @@
     "\n\g<0>",
 )
 
+# The namespace package declaration in google/cloud/__init__.py should be excluded
+# from coverage.
+s.replace(
+    ".coveragerc",
+    r"((?P<indent>[^\n\S]+)google/pubsub/__init__\.py)",
+    "\g<indent>google/cloud/__init__.py\n\g<0>",
+)
+
 # ----------------------------------------------------------------------------
 # Add templated files
 # ----------------------------------------------------------------------------
 templated_files = gcp.CommonTemplates().py_library(
     microgenerator=True,
     samples=True,
-    cov_level=99,
+    cov_level=100,
     system_test_external_dependencies=["psutil"],
 )
 s.move(templated_files, excludes=[".coveragerc"])
 
@@ -17,6 +17,7 @@
 
 import os
 import mock
+import warnings
 
 import grpc
 from grpc.experimental import aio
@@ -2338,11 +2339,13 @@ def test_pull_flattened():
 
         # Call the method with a truthy value for each flattened field,
         # using the keyword arguments to the method.
-        client.pull(
-            subscription="subscription_value",
-            return_immediately=True,
-            max_messages=1277,
-        )
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", category=DeprecationWarning)
+            client.pull(
+                subscription="subscription_value",
+                return_immediately=True,
+                max_messages=1277,
+            )
 
         # Establish that the underlying call was made with the expected
         # request object values.
@@ -2382,11 +2385,13 @@ async def test_pull_flattened_async():
         call.return_value = grpc_helpers_async.FakeUnaryUnaryCall(pubsub.PullResponse())
         # Call the method with a truthy value for each flattened field,
         # using the keyword arguments to the method.
-        response = await client.pull(
-            subscription="subscription_value",
-            return_immediately=True,
-            max_messages=1277,
-        )
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", category=DeprecationWarning)
+            await client.pull(
+                subscription="subscription_value",
+                return_immediately=True,
+                max_messages=1277,
+            )
 
         # Establish that the underlying call was made with the expected
         # request object values.
 
@@ -24,21 +24,19 @@
 from google.pubsub_v1 import types as gapic_types
 
 
-def create_batch(status=None, settings=types.BatchSettings()):
+def create_batch(status, settings=types.BatchSettings()):
     """Create a batch object, which does not commit.
 
     Args:
-        status (str): If provided, the batch's internal status will be set
-            to the provided status.
+        status (str): The batch's internal status will be set to the provided status.
 
     Returns:
         ~.pubsub_v1.publisher.batch.thread.Batch: The batch object
     """
     creds = mock.Mock(spec=credentials.Credentials)
     client = publisher.Client(credentials=creds)
     batch = Batch(client, "topic_name", settings)
-    if status:
-        batch._status = status
+    batch._status = status
     return batch
 
 
 
@@ -188,7 +188,7 @@ def api_publish_delay(topic="", messages=(), retry=None):
 
         start = datetime.datetime.now()
         event_set = api_publish_called.wait(timeout=1.0)
-        if not event_set:
+        if not event_set:  # pragma: NO COVER
             pytest.fail("API publish was not called in time")
         batch.publish({"data": b"second message"})
         end = datetime.datetime.now()