Adjust serializer test to verify via libprotobuf. (#1039)

Previously, the tests would compare serialization results against a
precomputed (via protoc) array of bytes. Now they serialize via our
nanopb based class and deserialize via libprotobuf (and vice versa) and
then ensure the result is the same as the input

1 files changed, 65 insertions, 0 deletions

diff --git a/cmake/FindProtobuf.cmake b/cmake/FindProtobuf.cmake
new file mode 100644
index 0000000..e9a1a81
--- /dev/null
+++ b/cmake/FindProtobuf.cmake
@@ -0,0 +1,65 @@
+# Copyright 2018 Google
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include(FindPackageHandleStandardArgs)
+
+set(BINARY_DIR ${FIREBASE_INSTALL_DIR}/external/protobuf)
+
+find_path(
+  PROTOBUF_INCLUDE_DIR google/protobuf/stubs/common.h
+  HINTS ${BINARY_DIR}/src/protobuf/src
+)
+
+find_library(
+  PROTOBUF_LIBRARY
+  NAMES libprotobuf.a
+  HINTS ${BINARY_DIR}/src/protobuf-build/src/.libs/
+)
+
+find_library(
+  PROTOBUFLITE_LIBRARY
+  NAMES libprotobuf-lite.a
+  HINTS ${BINARY_DIR}/src/protobuf-build/src/.libs/
+)
+
+find_package_handle_standard_args(
+  protobuf
+  DEFAULT_MSG
+  PROTOBUF_INCLUDE_DIR
+  PROTOBUF_LIBRARY
+  PROTOBUFLITE_LIBRARY
+)
+
+if(PROTOBUF_FOUND)
+  set(PROTOBUF_INCLUDE_DIRS ${PROTOBUF_INCLUDE_DIR})
+  set(PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARY} ${PROTOBUFLITE_LIBRARY})
+
+  if (NOT TARGET protobuf-lite)
+    add_library(protobuf-lite UNKNOWN IMPORTED)
+    set_target_properties(
+      protobuf-lite PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES ${PROTOBUF_INCLUDE_DIRS}
+      IMPORTED_LOCATION ${PROTOBUFLITE_LIBRARY}
+    )
+  endif()
+  if (NOT TARGET protobuf)
+    add_library(protobuf UNKNOWN IMPORTED)
+    set_target_properties(
+      protobuf PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES ${PROTOBUF_INCLUDE_DIRS}
+      IMPORTED_LOCATION ${PROTOBUF_LIBRARY}
+      INTERFACE_LINK_LIBRARIES protobuf-lite
+    )
+  endif()
+endif(PROTOBUF_FOUND)