Remove X-Chrome-Exponential-Throttling header

net/url_request/url_request_throttler_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/url_request/url_request_throttler_manager.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/pickle.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/histogram_tester.h"
 #include "base/time/time.h"
 #include "net/base/load_flags.h"
 #include "net/base/request_priority.h"
 #include "net/base/test_completion_callback.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_test_util.h"
-#include "net/url_request/url_request_throttler_header_interface.h"
 #include "net/url_request/url_request_throttler_test_support.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeDelta;
 using base::TimeTicks;
 
 namespace net {
 
 namespace {
 
@@ skipping 196 matching lines @@
   entry_->set_exponential_backoff_release_time(
       entry_->ImplGetTimeNow() - TimeDelta::FromMilliseconds(1));
   EXPECT_FALSE(entry_->ShouldRejectRequest(*request_,
                                            context_.network_delegate()));
 
   histogram_tester.ExpectBucketCount(kRequestThrottledHistogramName, 0, 2);
   histogram_tester.ExpectBucketCount(kRequestThrottledHistogramName, 1, 0);
 }
 
 TEST_F(URLRequestThrottlerEntryTest, InterfaceUpdateFailure) {
-  MockURLRequestThrottlerHeaderAdapter failure_response(503);
-  entry_->UpdateWithResponse(std::string(), &failure_response);
+  entry_->UpdateWithResponse(503);
   EXPECT_GT(entry_->GetExponentialBackoffReleaseTime(),
             entry_->ImplGetTimeNow())
       << "A failure should increase the release_time";
 }
 
 TEST_F(URLRequestThrottlerEntryTest, InterfaceUpdateSuccess) {
-  MockURLRequestThrottlerHeaderAdapter success_response(200);
-  entry_->UpdateWithResponse(std::string(), &success_response);
+  entry_->UpdateWithResponse(200);
   EXPECT_EQ(entry_->GetExponentialBackoffReleaseTime(),
             entry_->ImplGetTimeNow())
       << "A success should not add any delay";
 }
 
 TEST_F(URLRequestThrottlerEntryTest, InterfaceUpdateSuccessThenFailure) {
-  MockURLRequestThrottlerHeaderAdapter failure_response(503);
-  MockURLRequestThrottlerHeaderAdapter success_response(200);
-  entry_->UpdateWithResponse(std::string(), &success_response);
-  entry_->UpdateWithResponse(std::string(), &failure_response);
+  entry_->UpdateWithResponse(200);
+  entry_->UpdateWithResponse(503);
   EXPECT_GT(entry_->GetExponentialBackoffReleaseTime(),
             entry_->ImplGetTimeNow())
       << "This scenario should add delay";
-  entry_->UpdateWithResponse(std::string(), &success_response);
+  entry_->UpdateWithResponse(200);
 }
 
 TEST_F(URLRequestThrottlerEntryTest, IsEntryReallyOutdated) {
   TimeDelta lifetime = TimeDelta::FromMilliseconds(
       MockURLRequestThrottlerEntry::kDefaultEntryLifetimeMs);
   const TimeDelta kFiveMs = TimeDelta::FromMilliseconds(5);
 
   TimeAndBool test_values[] = {
       TimeAndBool(now_, false, __LINE__),
       TimeAndBool(now_ - kFiveMs, false, __LINE__),
       TimeAndBool(now_ + kFiveMs, false, __LINE__),
       TimeAndBool(now_ - (lifetime - kFiveMs), false, __LINE__),
       TimeAndBool(now_ - lifetime, true, __LINE__),
       TimeAndBool(now_ - (lifetime + kFiveMs), true, __LINE__)};
 
   for (unsigned int i = 0; i < arraysize(test_values); ++i) {
     entry_->set_exponential_backoff_release_time(test_values[i].time);
     EXPECT_EQ(entry_->IsEntryOutdated(), test_values[i].result) <<
         "Test case #" << i << " line " << test_values[i].line << " failed";
   }
 }
 
 TEST_F(URLRequestThrottlerEntryTest, MaxAllowedBackoff) {
   for (int i = 0; i < 30; ++i) {
-    MockURLRequestThrottlerHeaderAdapter response_adapter(503);
-    entry_->UpdateWithResponse(std::string(), &response_adapter);
+    entry_->UpdateWithResponse(503);
   }
 
   TimeDelta delay = entry_->GetExponentialBackoffReleaseTime() - now_;
   EXPECT_EQ(delay.InMilliseconds(),
             MockURLRequestThrottlerEntry::kDefaultMaximumBackoffMs);
 }
 
 TEST_F(URLRequestThrottlerEntryTest, MalformedContent) {
-  MockURLRequestThrottlerHeaderAdapter response_adapter(503);
   for (int i = 0; i < 5; ++i)
-    entry_->UpdateWithResponse(std::string(), &response_adapter);
+    entry_->UpdateWithResponse(503);
 
   TimeTicks release_after_failures = entry_->GetExponentialBackoffReleaseTime();
 
   // Inform the entry that a response body was malformed, which is supposed to
   // increase the back-off time.  Note that we also submit a successful
   // UpdateWithResponse to pair with ReceivedContentWasMalformed() since that
   // is what happens in practice (if a body is received, then a non-500
   // response must also have been received).
   entry_->ReceivedContentWasMalformed(200);
-  MockURLRequestThrottlerHeaderAdapter success_adapter(200);
-  entry_->UpdateWithResponse(std::string(), &success_adapter);
+  entry_->UpdateWithResponse(200);
   EXPECT_GT(entry_->GetExponentialBackoffReleaseTime(), release_after_failures);
 }
 
 TEST_F(URLRequestThrottlerEntryTest, SlidingWindow) {
   int max_send = URLRequestThrottlerEntry::kDefaultMaxSendThreshold;
   int sliding_window =
       URLRequestThrottlerEntry::kDefaultSlidingWindowPeriodMs;
 
   TimeTicks time_1 = entry_->ImplGetTimeNow() +
       TimeDelta::FromMilliseconds(sliding_window / 3);
@@ skipping 34 matching lines @@
       : request_(context_.CreateRequest(GURL(), DEFAULT_PRIORITY, NULL)) {}
 
   void SetUp() override { request_->SetLoadFlags(0); }
 
   void ExpectEntryAllowsAllOnErrorIfOptedOut(
       URLRequestThrottlerEntryInterface* entry,
       bool opted_out,
       const URLRequest& request) {
     EXPECT_FALSE(entry->ShouldRejectRequest(request,
                                             context_.network_delegate()));
-    MockURLRequestThrottlerHeaderAdapter failure_adapter(503);
     for (int i = 0; i < 10; ++i) {
       // Host doesn't really matter in this scenario so we skip it.
-      entry->UpdateWithResponse(std::string(), &failure_adapter);
+      entry->UpdateWithResponse(503);
     }
     EXPECT_NE(opted_out, entry->ShouldRejectRequest(
                   request, context_.network_delegate()));
 
     if (opted_out) {
       // We're not mocking out GetTimeNow() in this scenario
       // so add a 100 ms buffer to avoid flakiness (that should always
       // give enough time to get from the TimeTicks::Now() call here
       // to the TimeTicks::Now() call in the entry class).
       EXPECT_GT(TimeTicks::Now() + TimeDelta::FromMilliseconds(100),
@@ skipping 67 matching lines @@
 
   manager.RegisterRequestUrl(GURL("http://www.example.com/"));
   manager.RegisterRequestUrl(GURL("http://www.google.com/"));
   manager.RegisterRequestUrl(GURL("http://www.google.com/index/0"));
   manager.RegisterRequestUrl(GURL("http://www.google.com/index/0?code=1"));
   manager.RegisterRequestUrl(GURL("http://www.google.com/index/0#lolsaure"));
 
   EXPECT_EQ(3, manager.GetNumberOfEntries());
 }
 
-TEST_F(URLRequestThrottlerManagerTest, OptOutHeader) {
+TEST_F(URLRequestThrottlerManagerTest, LocalHostOptedOut) {
   MockURLRequestThrottlerManager manager;
-  scoped_refptr<URLRequestThrottlerEntryInterface> entry =
-      manager.RegisterRequestUrl(GURL("http://www.google.com/yodude"));
-
-  // Fake a response with the opt-out header.
-  MockURLRequestThrottlerHeaderAdapter response_adapter(
-      std::string(),
-      MockURLRequestThrottlerEntry::kExponentialThrottlingDisableValue,
-      200);
-  entry->UpdateWithResponse("www.google.com", &response_adapter);
-
-  // Ensure that the same entry on error always allows everything.
-  ExpectEntryAllowsAllOnErrorIfOptedOut(entry.get(), true, *request_);
-
-  // Ensure that a freshly created entry (for a different URL on an
-  // already opted-out host) also gets "always allow" behavior.
-  scoped_refptr<URLRequestThrottlerEntryInterface> other_entry =
-      manager.RegisterRequestUrl(GURL("http://www.google.com/bingobob"));
-  ExpectEntryAllowsAllOnErrorIfOptedOut(other_entry.get(), true, *request_);
-
-  // Fake a response with the opt-out header incorrectly specified.
-  scoped_refptr<URLRequestThrottlerEntryInterface> no_opt_out_entry =
-      manager.RegisterRequestUrl(GURL("http://www.nike.com/justdoit"));
-  MockURLRequestThrottlerHeaderAdapter wrong_adapter(
-      std::string(), "yesplease", 200);
-  no_opt_out_entry->UpdateWithResponse("www.nike.com", &wrong_adapter);
-  ExpectEntryAllowsAllOnErrorIfOptedOut(
-      no_opt_out_entry.get(), false, *request_);
-
   // A localhost entry should always be opted out.
   scoped_refptr<URLRequestThrottlerEntryInterface> localhost_entry =
       manager.RegisterRequestUrl(GURL("http://localhost/hello"));
-  ExpectEntryAllowsAllOnErrorIfOptedOut(localhost_entry.get(), true, *request_);
+  EXPECT_FALSE(localhost_entry->ShouldRejectRequest(
+      (*request_), context_.network_delegate()));
+  for (int i = 0; i < 10; ++i) {
+    // Host doesn't really matter in this scenario so we skip it.

[mmenke, 2015/05/19 20:31:24]

Obsolete comment.

[xunjieli, 2015/05/19 20:54:16]

Done.

+    localhost_entry->UpdateWithResponse(503);
+  }
+  EXPECT_FALSE(localhost_entry->ShouldRejectRequest(
+      (*request_), context_.network_delegate()));
+
+  // We're not mocking out GetTimeNow() in this scenario
+  // so add a 100 ms buffer to avoid flakiness (that should always
+  // give enough time to get from the TimeTicks::Now() call here
+  // to the TimeTicks::Now() call in the entry class).
+  EXPECT_GT(TimeTicks::Now() + TimeDelta::FromMilliseconds(100),
+            localhost_entry->GetExponentialBackoffReleaseTime());
 }
 
 TEST_F(URLRequestThrottlerManagerTest, ClearOnNetworkChange) {
   for (int i = 0; i < 3; ++i) {
     MockURLRequestThrottlerManager manager;
     scoped_refptr<URLRequestThrottlerEntryInterface> entry_before =
         manager.RegisterRequestUrl(GURL("http://www.example.com/"));
-    MockURLRequestThrottlerHeaderAdapter failure_adapter(503);
     for (int j = 0; j < 10; ++j) {
       // Host doesn't really matter in this scenario so we skip it.

[mmenke, 2015/05/19 20:31:24]

Obsolete comment.

[xunjieli, 2015/05/19 20:54:16]

Done.

-      entry_before->UpdateWithResponse(std::string(), &failure_adapter);
+      entry_before->UpdateWithResponse(503);
     }
     EXPECT_TRUE(entry_before->ShouldRejectRequest(*request_,
                                                   context_.network_delegate()));
 
     switch (i) {
       case 0:
         manager.OnIPAddressChanged();
         break;
       case 1:
         manager.OnConnectionTypeChanged(
             NetworkChangeNotifier::CONNECTION_UNKNOWN);
         break;
       case 2:
         manager.OnConnectionTypeChanged(NetworkChangeNotifier::CONNECTION_NONE);
         break;
       default:
         FAIL();
     }
 
     scoped_refptr<URLRequestThrottlerEntryInterface> entry_after =
         manager.RegisterRequestUrl(GURL("http://www.example.com/"));
     EXPECT_FALSE(entry_after->ShouldRejectRequest(
                      *request_, context_.network_delegate()));
   }
 }
 
 }  // namespace net