aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/python/grpcio_test/grpc_test/test_common.py
diff options
context:
space:
mode:
Diffstat (limited to 'src/python/grpcio_test/grpc_test/test_common.py')
-rw-r--r--src/python/grpcio_test/grpc_test/test_common.py71
1 files changed, 71 insertions, 0 deletions
diff --git a/src/python/grpcio_test/grpc_test/test_common.py b/src/python/grpcio_test/grpc_test/test_common.py
new file mode 100644
index 0000000000..f8e1f1e43f
--- /dev/null
+++ b/src/python/grpcio_test/grpc_test/test_common.py
@@ -0,0 +1,71 @@
+# Copyright 2015, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+# * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Common code used throughout tests of gRPC."""
+
+import collections
+
+
+def metadata_transmitted(original_metadata, transmitted_metadata):
+ """Judges whether or not metadata was acceptably transmitted.
+
+ gRPC is allowed to insert key-value pairs into the metadata values given by
+ applications and to reorder key-value pairs with different keys but it is not
+ allowed to alter existing key-value pairs or to reorder key-value pairs with
+ the same key.
+
+ Args:
+ original_metadata: A metadata value used in a test of gRPC.
+ transmitted_metadata: A metadata value corresponding to original_metadata
+ after having been transmitted via gRPC.
+
+ Returns:
+ A boolean indicating whether transmitted_metadata accurately reflects
+ original_metadata after having been transmitted via gRPC.
+ """
+ original = collections.defaultdict(list)
+ for key, value in original_metadata:
+ original[key].append(value)
+ transmitted = collections.defaultdict(list)
+ for key, value in transmitted_metadata:
+ transmitted[key].append(value)
+
+ for key, values in original.iteritems():
+ transmitted_values = transmitted[key]
+ transmitted_iterator = iter(transmitted_values)
+ try:
+ for value in values:
+ while True:
+ transmitted_value = next(transmitted_iterator)
+ if value == transmitted_value:
+ break
+ except StopIteration:
+ return False
+ else:
+ return True