//net changes for stale-while-revalidate

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 7359 matching lines @@
   EXPECT_EQ(1, cache.network_layer()->transaction_count());
 
   // Send the request again and check that Resource-Freshness header is absent.
   stale_while_revalidate_transaction.handler = CheckResourceFreshnessAbsent;
 
   RunTransactionTest(cache.http_cache(), stale_while_revalidate_transaction);
 
   EXPECT_EQ(2, cache.network_layer()->transaction_count());
 }
 
+TEST(HttpCache, StaleContentNotUsedWhenLoadFlagNotSet) {
+  MockHttpCache cache;
+
+  ScopedMockTransaction stale_while_revalidate_transaction(
+      kSimpleGET_Transaction);
+
+  stale_while_revalidate_transaction.response_headers =
+      "Last-Modified: Sat, 18 Apr 2007 01:10:43 GMT\n"
+      "Age: 10801\n"
+      "Cache-Control: max-age=0,stale-while-revalidate=86400\n";
+
+  // Write to the cache.
+  RunTransactionTest(cache.http_cache(), stale_while_revalidate_transaction);
+
+  EXPECT_EQ(1, cache.network_layer()->transaction_count());
+
+  // Send the request again and check that it is sent to the network again.
+  HttpResponseInfo response_info;
+  RunTransactionTestWithResponseInfo(
+      cache.http_cache(), stale_while_revalidate_transaction, &response_info);
+
+  EXPECT_EQ(2, cache.network_layer()->transaction_count());
+  EXPECT_FALSE(response_info.async_revalidation_required);
+}
+
+TEST(HttpCache, StaleContentUsedWhenLoadFlagSetAndUsable) {
+  MockHttpCache cache;
+
+  ScopedMockTransaction stale_while_revalidate_transaction(
+      kSimpleGET_Transaction);
+  stale_while_revalidate_transaction.load_flags |=
+      LOAD_SUPPORT_ASYNC_REVALIDATION;
+  stale_while_revalidate_transaction.response_headers =
+      "Last-Modified: Sat, 18 Apr 2007 01:10:43 GMT\n"
+      "Age: 10801\n"
+      "Cache-Control: max-age=0,stale-while-revalidate=86400\n";
+
+  // Write to the cache.
+  RunTransactionTest(cache.http_cache(), stale_while_revalidate_transaction);
+
+  EXPECT_EQ(1, cache.network_layer()->transaction_count());
+
+  // Send the request again and check that it is not sent to the network again.
+  HttpResponseInfo response_info;
+  RunTransactionTestWithResponseInfo(
+      cache.http_cache(), stale_while_revalidate_transaction, &response_info);
+
+  EXPECT_EQ(1, cache.network_layer()->transaction_count());
+  EXPECT_TRUE(response_info.async_revalidation_required);
+}
+
+TEST(HttpCache, StaleContentNotUsedWhenUnusable) {
+  MockHttpCache cache;
+
+  ScopedMockTransaction stale_while_revalidate_transaction(
+      kSimpleGET_Transaction);
+  stale_while_revalidate_transaction.load_flags |=
+      LOAD_SUPPORT_ASYNC_REVALIDATION;
+  stale_while_revalidate_transaction.response_headers =
+      "Last-Modified: Sat, 18 Apr 2007 01:10:43 GMT\n"
+      "Age: 10801\n"
+      "Cache-Control: max-age=0,stale-while-revalidate=1800\n";
+
+  // Write to the cache.
+  RunTransactionTest(cache.http_cache(), stale_while_revalidate_transaction);
+
+  EXPECT_EQ(1, cache.network_layer()->transaction_count());
+
+  // Send the request again and check that it is sent to the network again.
+  HttpResponseInfo response_info;
+  RunTransactionTestWithResponseInfo(
+      cache.http_cache(), stale_while_revalidate_transaction, &response_info);
+
+  EXPECT_EQ(2, cache.network_layer()->transaction_count());
+  EXPECT_FALSE(response_info.async_revalidation_required);
+}
+
 // Tests that we allow multiple simultaneous, non-overlapping transactions to
 // take place on a sparse entry.
 TEST(HttpCache, RangeGET_MultipleRequests) {
   MockHttpCache cache;
 
   // Create a transaction for bytes 0-9.
   MockHttpRequest request(kRangeGET_TransactionOK);
   MockTransaction transaction(kRangeGET_TransactionOK);
   transaction.request_headers = "Range: bytes = 0-9\r\n" EXTRA_HEADER;
   transaction.data = "rg: 00-09 ";
@@ skipping 164 matching lines @@
   EXPECT_EQ(1, cache.disk_cache()->open_count());
   EXPECT_EQ(1, cache.disk_cache()->create_count());
   EXPECT_TRUE(response_info.was_cached);
 
   // The new SSL state is reported.
   EXPECT_EQ(status2, response_info.ssl_info.connection_status);
   EXPECT_TRUE(cert2->Equals(response_info.ssl_info.cert.get()));
 }
 
 }  // namespace net