Add host resolver rules experimental flag for Cronet

components/cronet/url_request_context_config_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/cronet/url_request_context_config.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "net/cert/cert_verifier.h"
 #include "net/http/http_network_session.h"
 #include "net/proxy/proxy_config.h"
 #include "net/proxy/proxy_config_service_fixed.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_builder.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cronet {
 
-TEST(URLRequestContextConfigTest, SetQuicExperimentalOptions) {
+TEST(URLRequestContextConfigTest, TestExperimentalOptionPassing) {
   URLRequestContextConfig config(
       // Enable QUIC.
       true,
       // QUIC User Agent ID.
       "Default QUIC User Agent ID",
       // Enable SPDY.
       true,
       // Enable SDCH.
       false,
       // Type of http cache.
@@ skipping 11 matching lines @@
       "{\"QUIC\":{\"max_server_configs_stored_in_properties\":2,"
       "\"delay_tcp_race\":true,"
       "\"max_number_of_lossy_connections\":10,"
       "\"prefer_aes\":true,"
       "\"user_agent_id\":\"Custom QUIC UAID\","
       "\"packet_loss_threshold\":0.5,"
       "\"idle_connection_timeout_seconds\":300,"
       "\"close_sessions_on_ip_change\":true,"
       "\"race_cert_verification\":true,"
       "\"connection_options\":\"TIME,TBBR,REJ\"},"
-      "\"AsyncDNS\":{\"enable\":true}}",
+      "\"AsyncDNS\":{\"enable\":true},"
+      "\"HostResolverRules\":{\"host_resolver_rules\":"
+      "\"MAP * 127.0.0.1\"}}",
       // Data reduction proxy key.
       "",
       // Data reduction proxy.
       "",
       // Fallback data reduction proxy.
       "",
       // Data reduction proxy secure proxy check URL.
       "",
       // MockCertVerifier to use for testing purposes.
       std::unique_ptr<net::CertVerifier>(),
@@ skipping 40 matching lines @@
   EXPECT_EQ(300, params->quic_idle_connection_timeout_seconds);
 
   EXPECT_TRUE(params->quic_close_sessions_on_ip_change);
   EXPECT_FALSE(params->quic_migrate_sessions_on_network_change);
 
   // Check race_cert_verification.
   EXPECT_TRUE(params->quic_race_cert_verification);
 
   // Check AsyncDNS resolver is enabled.
   EXPECT_TRUE(context->host_resolver()->GetDnsConfigAsValue());
+
+  net::HostResolver::RequestInfo info(net::HostPortPair("abcde", 80));
+  net::AddressList addresses;
+  EXPECT_EQ(net::OK, context->host_resolver()->ResolveFromCache(
+                         info, &addresses, net::BoundNetLog()));
 }
 
 TEST(URLRequestContextConfigTest, SetQuicConnectionMigrationOptions) {
   URLRequestContextConfig config(
       // Enable QUIC.
       true,
       // QUIC User Agent ID.
       "Default QUIC User Agent ID",
       // Enable SPDY.
       true,
@@ skipping 39 matching lines @@
   std::unique_ptr<net::URLRequestContext> context(builder.Build());
   const net::HttpNetworkSession::Params* params =
       context->GetNetworkSessionParams();
 
   EXPECT_FALSE(params->quic_close_sessions_on_ip_change);
   EXPECT_TRUE(params->quic_migrate_sessions_on_network_change);
   EXPECT_TRUE(params->quic_migrate_sessions_early);
 }
 
 }  // namespace cronet