Add a test to export two TestService on the same server, only with different

package names. Make sure they work as intended.

This is based on []
	Change on 2015/01/08 by yangg <yangg@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=83558743

3 files changed, 35 insertions, 18 deletions

diff --git a/test/cpp/util/echo.proto b/test/cpp/util/echo.proto
index 1240399bf8..bd5357fe19 100644
--- a/test/cpp/util/echo.proto
+++ b/test/cpp/util/echo.proto
@@ -1,24 +1,8 @@
 syntax = "proto2";
 
-package grpc.cpp.test.util;
-
-message RequestParams {
-  optional bool echo_deadline = 1;
-}
-
-message EchoRequest {
-  optional string message = 1;
-  optional RequestParams param = 2;
-}
+import "test/cpp/util/messages.proto";
 
-message ResponseParams {
-  optional int64 request_deadline = 1;
-}
-
-message EchoResponse {
-  optional string message = 1;
-  optional ResponseParams param = 2;
-}
+package grpc.cpp.test.util;
 
 service TestService {
   rpc Echo(EchoRequest) returns (EchoResponse);
diff --git a/test/cpp/util/echo_duplicate.proto b/test/cpp/util/echo_duplicate.proto
new file mode 100644
index 0000000000..c9266833e2
--- /dev/null
+++ b/test/cpp/util/echo_duplicate.proto
@@ -0,0 +1,12 @@
+// This is a partial copy of echo.proto with a different package name.
+
+syntax = "proto2";
+
+import "test/cpp/util/messages.proto";
+
+package grpc.cpp.test.util.duplicate;
+
+service TestService {
+  rpc Echo(grpc.cpp.test.util.EchoRequest)
+      returns (grpc.cpp.test.util.EchoResponse);
+}
diff --git a/test/cpp/util/messages.proto b/test/cpp/util/messages.proto
new file mode 100644
index 0000000000..d541821b65
--- /dev/null
+++ b/test/cpp/util/messages.proto
@@ -0,0 +1,21 @@
+syntax = "proto2";
+
+package grpc.cpp.test.util;
+
+message RequestParams {
+  optional bool echo_deadline = 1;
+}
+
+message EchoRequest {
+  optional string message = 1;
+  optional RequestParams param = 2;
+}
+
+message ResponseParams {
+  optional int64 request_deadline = 1;
+}
+
+message EchoResponse {
+  optional string message = 1;
+  optional ResponseParams param = 2;
+}