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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "net/base/load_state_change_coalescer.h" |
| 6 |
| 7 #include <vector> |
| 8 |
| 9 #include "base/bind.h" |
| 10 #include "base/message_loop/message_loop.h" |
| 11 #include "base/run_loop.h" |
| 12 #include "testing/gtest/include/gtest/gtest.h" |
| 13 |
| 14 namespace net { |
| 15 |
| 16 class LoadStateChangeCoalescerTest : public testing::Test { |
| 17 protected: |
| 18 void SetUp() override { |
| 19 coalescer_.reset(new LoadStateChangeCoalescer( |
| 20 base::Bind(&LoadStateChangeCoalescerTest::LoadStateChanged, |
| 21 base::Unretained(this)), |
| 22 base::TimeDelta(), LOAD_STATE_IDLE)); |
| 23 } |
| 24 |
| 25 void TearDown() override { coalescer_.reset(); } |
| 26 |
| 27 void LoadStateChanged(LoadState load_state) { |
| 28 load_state_changes_.push_back(load_state); |
| 29 } |
| 30 |
| 31 void WaitUntilIdle() { base::RunLoop().RunUntilIdle(); } |
| 32 |
| 33 scoped_ptr<LoadStateChangeCoalescer> coalescer_; |
| 34 std::vector<LoadState> load_state_changes_; |
| 35 }; |
| 36 |
| 37 TEST_F(LoadStateChangeCoalescerTest, SingleChange) { |
| 38 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_PROXY_FOR_URL); |
| 39 WaitUntilIdle(); |
| 40 ASSERT_EQ(1u, load_state_changes_.size()); |
| 41 EXPECT_EQ(LOAD_STATE_RESOLVING_PROXY_FOR_URL, load_state_changes_[0]); |
| 42 } |
| 43 |
| 44 TEST_F(LoadStateChangeCoalescerTest, TwoChangesCoalesce) { |
| 45 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_PROXY_FOR_URL); |
| 46 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT); |
| 47 WaitUntilIdle(); |
| 48 ASSERT_EQ(1u, load_state_changes_.size()); |
| 49 EXPECT_EQ(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT, load_state_changes_[0]); |
| 50 } |
| 51 |
| 52 TEST_F(LoadStateChangeCoalescerTest, ThreeChangesCoalesce) { |
| 53 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_PROXY_FOR_URL); |
| 54 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT); |
| 55 coalescer_->LoadStateChanged(LOAD_STATE_DOWNLOADING_PROXY_SCRIPT); |
| 56 WaitUntilIdle(); |
| 57 ASSERT_EQ(1u, load_state_changes_.size()); |
| 58 EXPECT_EQ(LOAD_STATE_DOWNLOADING_PROXY_SCRIPT, load_state_changes_[0]); |
| 59 } |
| 60 |
| 61 TEST_F(LoadStateChangeCoalescerTest, CoalesceToOriginalLoadState) { |
| 62 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_PROXY_FOR_URL); |
| 63 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT); |
| 64 coalescer_->LoadStateChanged(LOAD_STATE_IDLE); |
| 65 WaitUntilIdle(); |
| 66 EXPECT_TRUE(load_state_changes_.empty()); |
| 67 } |
| 68 |
| 69 TEST_F(LoadStateChangeCoalescerTest, AlternateLoadStatesWithWait) { |
| 70 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT); |
| 71 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_PROXY_FOR_URL); |
| 72 WaitUntilIdle(); |
| 73 ASSERT_EQ(1u, load_state_changes_.size()); |
| 74 EXPECT_EQ(LOAD_STATE_RESOLVING_PROXY_FOR_URL, load_state_changes_[0]); |
| 75 |
| 76 coalescer_->LoadStateChanged(LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT); |
| 77 coalescer_->LoadStateChanged(LOAD_STATE_IDLE); |
| 78 WaitUntilIdle(); |
| 79 ASSERT_EQ(2u, load_state_changes_.size()); |
| 80 EXPECT_EQ(LOAD_STATE_IDLE, load_state_changes_[1]); |
| 81 } |
| 82 |
| 83 } // namespace net |
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