Http cache: Fix DCHECK with POSTs and a disabled cache.

net/http/http_cache_unittest.cc

 // Copyright (c) 2012 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 "net/http/http_cache.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 2722 matching lines @@
 TEST(HttpCache, SimplePOST_SkipsCache) {
   MockHttpCache cache;
 
   RunTransactionTest(cache.http_cache(), kSimplePOST_Transaction);
 
   EXPECT_EQ(1, cache.network_layer()->transaction_count());
   EXPECT_EQ(0, cache.disk_cache()->open_count());
   EXPECT_EQ(0, cache.disk_cache()->create_count());
 }
 
+// Tests POST handling with a disabled cache (no DCHECK).
+TEST(HttpCache, SimplePOST_DisabledCache) {
+  MockHttpCache cache;
+  cache.http_cache()->set_mode(net::HttpCache::Mode::DISABLE);
+
+  RunTransactionTest(cache.http_cache(), kSimplePOST_Transaction);
+
+  EXPECT_EQ(1, cache.network_layer()->transaction_count());
+  EXPECT_EQ(0, cache.disk_cache()->open_count());
+  EXPECT_EQ(0, cache.disk_cache()->create_count());
+}
+
 TEST(HttpCache, SimplePOST_LoadOnlyFromCache_Miss) {
   MockHttpCache cache;
 
   MockTransaction transaction(kSimplePOST_Transaction);
   transaction.load_flags |= net::LOAD_ONLY_FROM_CACHE;
 
   MockHttpRequest request(transaction);
   net::TestCompletionCallback callback;
 
   scoped_ptr<net::HttpTransaction> trans;
@@ skipping 4575 matching lines @@
 
   // Here the second transaction proceeds without reading the first body.
   EXPECT_EQ(net::LOAD_STATE_WAITING_FOR_CACHE, second->trans->GetLoadState());
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(net::LOAD_STATE_IDLE, second->trans->GetLoadState());
   ASSERT_TRUE(second->trans->GetResponseInfo());
   EXPECT_TRUE(second->trans->GetResponseInfo()->headers->HasHeaderValue(
       "Cache-Control", "no-store"));
   ReadAndVerifyTransaction(second->trans.get(), kSimpleGET_Transaction);
 }