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      1 //
      2 // Copyright (C) 2017 The Android Open Source Project
      3 //
      4 // Licensed under the Apache License, Version 2.0 (the "License");
      5 // you may not use this file except in compliance with the License.
      6 // You may obtain a copy of the License at
      7 //
      8 //      http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 // Unless required by applicable law or agreed to in writing, software
     11 // distributed under the License is distributed on an "AS IS" BASIS,
     12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 // See the License for the specific language governing permissions and
     14 // limitations under the License.
     15 //
     16 
     17 #include "update_engine/proxy_resolver.h"
     18 
     19 #include <deque>
     20 #include <string>
     21 
     22 #include <gtest/gtest.h>
     23 
     24 #include <base/bind.h>
     25 #include <brillo/bind_lambda.h>
     26 #include <brillo/message_loops/fake_message_loop.h>
     27 
     28 using std::deque;
     29 using std::string;
     30 
     31 namespace chromeos_update_engine {
     32 
     33 class ProxyResolverTest : public ::testing::Test {
     34  protected:
     35   virtual ~ProxyResolverTest() = default;
     36 
     37   void SetUp() override { loop_.SetAsCurrent(); }
     38 
     39   void TearDown() override { EXPECT_FALSE(loop_.PendingTasks()); }
     40 
     41   brillo::FakeMessageLoop loop_{nullptr};
     42   DirectProxyResolver resolver_;
     43 };
     44 
     45 TEST_F(ProxyResolverTest, DirectProxyResolverCallbackTest) {
     46   bool called = false;
     47   deque<string> callback_proxies;
     48   auto callback = base::Bind(
     49       [](bool* called,
     50          deque<string>* callback_proxies,
     51          const deque<string>& proxies) {
     52         *called = true;
     53         *callback_proxies = proxies;
     54       },
     55       &called,
     56       &callback_proxies);
     57 
     58   EXPECT_NE(kProxyRequestIdNull,
     59             resolver_.GetProxiesForUrl("http://foo", callback));
     60   // Check the callback is not called until the message loop runs.
     61   EXPECT_FALSE(called);
     62   loop_.Run();
     63   EXPECT_TRUE(called);
     64   EXPECT_EQ(kNoProxy, callback_proxies.front());
     65 }
     66 
     67 TEST_F(ProxyResolverTest, DirectProxyResolverCancelCallbackTest) {
     68   bool called = false;
     69   auto callback = base::Bind(
     70       [](bool* called, const deque<string>& proxies) { *called = true; },
     71       &called);
     72 
     73   ProxyRequestId request = resolver_.GetProxiesForUrl("http://foo", callback);
     74   EXPECT_FALSE(called);
     75   EXPECT_TRUE(resolver_.CancelProxyRequest(request));
     76   loop_.Run();
     77   EXPECT_FALSE(called);
     78 }
     79 
     80 TEST_F(ProxyResolverTest, DirectProxyResolverSimultaneousCallbacksTest) {
     81   int called = 0;
     82   auto callback = base::Bind(
     83       [](int* called, const deque<string>& proxies) { (*called)++; }, &called);
     84 
     85   resolver_.GetProxiesForUrl("http://foo", callback);
     86   resolver_.GetProxiesForUrl("http://bar", callback);
     87   EXPECT_EQ(0, called);
     88   loop_.Run();
     89   EXPECT_EQ(2, called);
     90 }
     91 
     92 }  // namespace chromeos_update_engine
     93