// Test case to test AccountService

　　TEST(AccountServiceTest, transferTest)

　　{

　　std::map

　　mAccount["A"] = Account("A", 3000);

　　mAccount["B"] = Account("B", 2000);

　　AccountHelper helper(mAccount);

　　MockAccountManager* pManager = new MockAccountManager();

　　// specify the behavior of MockAccountManager

　　// always invoke AccountHelper::findAccountForUser

　　// when AccountManager::findAccountForUser is invoked

　　EXPECT_CALL(*pManager, findAccountForUser(testing::_)).WillRepeatedly(

　　testing::Invoke(&helper, &AccountHelper::findAccountForUser));

　　// always invoke AccountHelper::updateAccount

　　//when AccountManager::updateAccount is invoked

　　EXPECT_CALL(*pManager, updateAccount(testing::_)).WillRepeatedly(

　　testing::Invoke(&helper, &AccountHelper::updateAccount));

　　AccountService as;

　　// inject the MockAccountManager object into AccountService

　　as.setAccountManager(pManager);

　　// operate AccountService

　　as.transfer("A", "B", 1005);

　　// check the balance of Account("A") and Account("B") to

　　//verify that AccountService has done the right job

　　EXPECT_EQ(1995, helper.findAccountForUser("A").getBalance());

　　EXPECT_EQ(3005, helper.findAccountForUser("B").getBalance());

　　delete pManager;

　　}

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