From 0b6ad7d4bc686c78995a830cccb39a7de2a929ae Mon Sep 17 00:00:00 2001
From: yang-g <yangg@google.com>
Date: Thu, 25 Jun 2015 14:39:01 -0700
Subject: Bug fix. Do not push to incoming_queue after it is flushed.

---
 test/cpp/end2end/end2end_test.cc | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'test/cpp/end2end')

diff --git a/test/cpp/end2end/end2end_test.cc b/test/cpp/end2end/end2end_test.cc
index 45ba8b0878..5e850ea30a 100644
--- a/test/cpp/end2end/end2end_test.cc
+++ b/test/cpp/end2end/end2end_test.cc
@@ -68,6 +68,8 @@ namespace testing {
 
 namespace {
 
+const char* kServerCancelAfterReads = "cancel_after_reads";
+
 // When echo_deadline is requested, deadline seen in the ServerContext is set in
 // the response in seconds.
 void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request,
@@ -131,7 +133,23 @@ class TestServiceImpl : public ::grpc::cpp::test::util::TestService::Service {
                        EchoResponse* response) GRPC_OVERRIDE {
     EchoRequest request;
     response->set_message("");
+    int cancel_after_reads = 0;
+    const std::multimap<grpc::string, grpc::string> client_initial_metadata =
+        context->client_metadata();
+    if (client_initial_metadata.find(kServerCancelAfterReads) !=
+        client_initial_metadata.end()) {
+      std::istringstream iss(
+          client_initial_metadata.find(kServerCancelAfterReads)->second);
+      iss >> cancel_after_reads;
+      gpr_log(GPR_INFO, "cancel_after_reads %d", cancel_after_reads);
+    }
     while (reader->Read(&request)) {
+      if (cancel_after_reads == 1) {
+        gpr_log(GPR_INFO, "return cancel status");
+        return Status::CANCELLED;
+      } else if (cancel_after_reads > 0) {
+        cancel_after_reads--;
+      }
       response->mutable_message()->append(request.message());
     }
     return Status::OK;
@@ -687,6 +705,27 @@ TEST_F(End2endTest, OverridePerCallCredentials) {
   EXPECT_TRUE(s.ok());
 }
 
+// Client sends 20 requests and the server returns CANCELLED status after
+// reading 10 requests.
+TEST_F(End2endTest, RequestStreamServerEarlyCancelTest) {
+  ResetStub();
+  EchoRequest request;
+  EchoResponse response;
+  ClientContext context;
+
+  context.AddMetadata(kServerCancelAfterReads, "10");
+  auto stream = stub_->RequestStream(&context, &response);
+  request.set_message("hello");
+  int send_messages = 20;
+  while (send_messages > 0) {
+    EXPECT_TRUE(stream->Write(request));
+    send_messages--;
+  }
+  stream->WritesDone();
+  Status s = stream->Finish();
+  EXPECT_EQ(s.error_code(), StatusCode::CANCELLED);
+}
+
 }  // namespace testing
 }  // namespace grpc
 
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