Add in expiring budget

chrome/browser/budget_service/budget_database_unittest.cc

 // Copyright 2016 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 "chrome/browser/budget_service/budget_database.h"
 
 #include "base/run_loop.h"
 #include "base/test/simple_test_clock.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "chrome/browser/budget_service/budget.pb.h"
@@ skipping 66 matching lines @@
     return expectation_;
   }
 
   // Setup a test clock so that the tests can control time.
   base::SimpleTestClock* SetClockForTesting() {
     base::SimpleTestClock* clock = new base::SimpleTestClock();
     db_.SetClockForTesting(base::WrapUnique(clock));
     return clock;
   }
 
+  // Query the database to check if the origin is in the cache.
+  bool IsCached(const GURL& origin) { return db_.IsCached(origin); }
+
  protected:
   bool success_;
 
  private:
   content::TestBrowserThreadBundle thread_bundle_;
   std::unique_ptr<budget_service::Budget> budget_;
   TestingProfile profile_;
   BudgetDatabase db_;
   double debt_ = 0;
   BudgetDatabase::BudgetExpectation expectation_;
 };
 
 TEST_F(BudgetDatabaseTest, ReadAndWriteTest) {
   const GURL origin(kTestOrigin);
   base::SimpleTestClock* clock = SetClockForTesting();
   base::TimeDelta expiration(
       base::TimeDelta::FromHours(kDefaultExpirationInHours));
+  base::Time starting_time = clock->Now();
   base::Time expiration_time = clock->Now() + expiration;
 
   // Add two budget chunks with different expirations (default expiration and
   // default expiration + 1 day).
   ASSERT_TRUE(AddBudget(origin, kDefaultBudget1));
   clock->Advance(base::TimeDelta::FromDays(1));
   ASSERT_TRUE(AddBudget(origin, kDefaultBudget2));
 
   // Get the budget.
   GetBudgetDetails();
 
   // Get the expectation and validate it.
   const auto& expected_value = expectation();
   ASSERT_TRUE(success_);
   ASSERT_EQ(3U, expected_value.size());
 
   // Make sure that the correct data is returned.
   auto iter = expected_value.begin();
 
   // First value should be [total_budget, now]
   EXPECT_EQ(kDefaultBudget1 + kDefaultBudget2, iter->first);
-  // TODO(harkness): This will be "now" in the final version. For now, it's
-  // just 0.
-  EXPECT_EQ(0, iter->second);
+  EXPECT_EQ(clock->Now(), iter->second);
 
   // The next value should be the budget after the first chunk expires.
   iter++;
   EXPECT_EQ(kDefaultBudget2, iter->first);
-  EXPECT_EQ(expiration_time.ToInternalValue(), iter->second);
+  EXPECT_EQ(expiration_time, iter->second);
 
   // The final value gives the budget of 0.0 after the second chunk expires.
   expiration_time += base::TimeDelta::FromDays(1);
   iter++;
   EXPECT_EQ(0, iter->first);
-  EXPECT_EQ(expiration_time.ToInternalValue(), iter->second);
+  EXPECT_EQ(expiration_time, iter->second);
+
+  // Advance the time until the first chunk of budget should be expired.
+  clock->SetNow(starting_time +
+                base::TimeDelta::FromHours(kDefaultExpirationInHours));
+
+  // Get the new budget and check that kDefaultBudget1 has been removed.
+  GetBudgetDetails();
+  iter = expectation().begin();
+  ASSERT_EQ(2U, expectation().size());
+  EXPECT_EQ(kDefaultBudget2, iter->first);
+  iter++;
+  EXPECT_EQ(0, iter->first);
+
+  // Advace the time until both chunks of budget should be expired.
+  clock->SetNow(starting_time +
+                base::TimeDelta::FromHours(kDefaultExpirationInHours) +
+                base::TimeDelta::FromDays(1));
+
+  GetBudgetDetails();
+  iter = expectation().begin();
+  ASSERT_EQ(1U, expectation().size());
+  EXPECT_EQ(0, iter->first);
+
+  // Now that the entire budget has expired, check that the entry in the map
+  // has been removed.
+  EXPECT_FALSE(IsCached(origin));
 }