Clear the host cache when closing the last incognito window....

net/base/host_cache_unittest.cc

 // Copyright (c) 2009 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/base/host_cache.h"
 
 #include "base/format_macros.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
 #include "net/base/net_errors.h"
@@ skipping 301 matching lines @@
   base::TimeTicks now;
 
   // Lookup and Set should have no effect.
   EXPECT_TRUE(cache.Lookup(Key("foobar.com"), base::TimeTicks()) == NULL);
   cache.Set(Key("foobar.com"), OK, AddressList(), now);
   EXPECT_TRUE(cache.Lookup(Key("foobar.com"), base::TimeTicks()) == NULL);
 
   EXPECT_EQ(0U, cache.size());
 }
 
+TEST(HostCacheTest, Clear) {
+  HostCache cache(kMaxCacheEntries, kSuccessEntryTTL, kFailureEntryTTL);
+
+  // Set t=0.
+  base::TimeTicks now;
+
+  EXPECT_EQ(0u, cache.size());
+
+  // Add three entries.
+  cache.Set(Key("foobar1.com"), OK, AddressList(), now);
+  cache.Set(Key("foobar2.com"), OK, AddressList(), now);
+  cache.Set(Key("foobar3.com"), OK, AddressList(), now);
+
+  EXPECT_EQ(3u, cache.size());
+
+  cache.clear();
+
+  EXPECT_EQ(0u, cache.size());
+}
+
 // Tests the less than and equal operators for HostCache::Key work.
 TEST(HostCacheTest, KeyComparators) {
   struct {
     // Inputs.
     HostCache::Key key1;
     HostCache::Key key2;
 
     // Expectation.
     //   -1 means key1 is less than key2
     //    0 means key1 equals key2
@@ skipping 54 matching lines @@
         EXPECT_TRUE(key2 < key1);
         EXPECT_FALSE(key2 == key1);
         break;
       default:
         FAIL() << "Invalid expectation. Can be only -1, 0, 1";
     }
   }
 }
 
 }  // namespace net