Revert 211950 "Display DNS probe results."

chrome/renderer/net/net_error_helper_unittest.cc

-// Copyright 2013 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/renderer/net/net_error_helper.h"
-
-#include "base/logging.h"
-#include "chrome/common/net/net_error_info.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using chrome_common_net::DnsProbeStatus;
-using chrome_common_net::DnsProbeStatusToString;
-
-// NetErrorHelperTest cases consist of a string of these steps.
-enum TestStep {
-  // Simulate a provisional load start, fail, commit or a finish-load event.
-  // (Start and fail differentiate between normal and error pages.)
-  LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START,
-  LOAD_COMMIT, LOAD_FINISH,
-
-  // Simulate an IPC from the browser with DNS_PROBE_STARTED, _NOT_RUN, or
-  // _FINISHED_NXDOMAIN.
-  STATUS_STARTED, STATUS_NOT_RUN, STATUS_FINISHED,
-
-  // Expect that the *next* step will cause an update.  (Any step that is not
-  // prefixed by this pseudo-step is expected *not* to cause an update.)
-  EXPECT_UPDATE
-};
-
-class TestNetErrorHelper : public NetErrorHelper {
- public:
-  TestNetErrorHelper()
-      : NetErrorHelper(NULL),
-        mock_page_update_count_(0),
-        mock_displayed_probe_status_(chrome_common_net::DNS_PROBE_MAX) {}
-
-  virtual ~TestNetErrorHelper() {}
-
-  void StartLoad(bool is_main_frame, bool is_error_page) {
-    OnStartLoad(is_main_frame, is_error_page);
-  }
-
-  void FailLoad(bool is_main_frame, bool is_dns_error) {
-    OnFailLoad(is_main_frame, is_dns_error);
-  }
-
-  void CommitLoad(bool is_main_frame) {
-    OnCommitLoad(is_main_frame);
-  }
-
-  void FinishLoad(bool is_main_frame) {
-    OnFinishLoad(is_main_frame);
-  }
-
-  void ReceiveProbeStatus(DnsProbeStatus status) {
-    OnNetErrorInfo(static_cast<int>(status));
-  }
-
-  int mock_page_update_count() const { return mock_page_update_count_;  }
-  DnsProbeStatus mock_displayed_probe_status() const {
-    return mock_displayed_probe_status_;
-  }
-
- protected:
-  virtual void UpdateErrorPage() OVERRIDE {
-    DVLOG(1) << "Updating error page with status "
-             << DnsProbeStatusToString(last_probe_status_);
-    mock_page_update_count_++;
-    mock_displayed_probe_status_ = last_probe_status_;
-  }
-
- private:
-  int mock_page_update_count_;
-  DnsProbeStatus mock_displayed_probe_status_;
-};
-
-class NetErrorHelperTest : public testing::Test {
- protected:
-  enum MainFrame { SUB_FRAME, MAIN_FRAME };
-  enum ErrorPage { NORMAL_PAGE, ERROR_PAGE };
-  enum ErrorType { OTHER_ERROR, DNS_ERROR };
-
-  void StartLoad(MainFrame main_frame, ErrorPage error_page) {
-    helper_.StartLoad(main_frame == MAIN_FRAME, error_page == ERROR_PAGE);
-  }
-
-  void FailLoad(MainFrame main_frame, ErrorType error_type) {
-    helper_.FailLoad(main_frame == MAIN_FRAME, error_type == DNS_ERROR);
-  }
-
-  void CommitLoad(MainFrame main_frame) {
-    helper_.CommitLoad(main_frame == MAIN_FRAME);
-  }
-
-  void FinishLoad(MainFrame main_frame) {
-    helper_.FinishLoad(main_frame == MAIN_FRAME);
-  }
-
-  void ReceiveProbeStatus(DnsProbeStatus status) {
-    helper_.ReceiveProbeStatus(status);
-  }
-
-  void RunTest(const TestStep steps[], int step_count);
-
-  int page_update_count() const { return helper_.mock_page_update_count(); }
-  DnsProbeStatus displayed_probe_status() const {
-    return helper_.mock_displayed_probe_status();
-  }
-
- private:
-  TestNetErrorHelper helper_;
-};
-
-void NetErrorHelperTest::RunTest(const TestStep steps[], int step_count) {
-  // Whether the next instruction is expected to cause an update (since the
-  // step right before it was EXPECT_UPDATE) or not.
-  bool update_expected = false;
-  int expected_update_count = page_update_count();
-  // The last status that the test simulated receiving from the browser.
-  // When an update is expected, the status is expected to match this.
-  chrome_common_net::DnsProbeStatus last_status_received =
-      chrome_common_net::DNS_PROBE_POSSIBLE;
-
-  for (int i = 0; i < step_count; i++) {
-    switch (steps[i]) {
-    case LOAD_NORMAL_START:
-      StartLoad(MAIN_FRAME, NORMAL_PAGE);
-      break;
-    case LOAD_NORMAL_FAIL:
-      FailLoad(MAIN_FRAME, DNS_ERROR);
-      break;
-    case LOAD_ERROR_START:
-      StartLoad(MAIN_FRAME, ERROR_PAGE);
-      break;
-    case LOAD_COMMIT:
-      CommitLoad(MAIN_FRAME);
-      break;
-    case LOAD_FINISH:
-      FinishLoad(MAIN_FRAME);
-      break;
-    case STATUS_STARTED:
-      ReceiveProbeStatus(chrome_common_net::DNS_PROBE_STARTED);
-      last_status_received = chrome_common_net::DNS_PROBE_STARTED;
-      break;
-    case STATUS_NOT_RUN:
-      ReceiveProbeStatus(chrome_common_net::DNS_PROBE_NOT_RUN);
-      last_status_received = chrome_common_net::DNS_PROBE_NOT_RUN;
-      break;
-    case STATUS_FINISHED:
-      ReceiveProbeStatus(chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN);
-      last_status_received = chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN;
-      break;
-    case EXPECT_UPDATE:
-      ASSERT_FALSE(update_expected);
-      update_expected = true;
-      // Skip to next step to see if it updates the status, instead of
-      // checking whether EXPECT_UPDATE itself caused an update.
-      continue;
-    }
-
-    if (update_expected) {
-      DCHECK_NE(chrome_common_net::DNS_PROBE_POSSIBLE, last_status_received);
-      ++expected_update_count;
-
-      EXPECT_EQ(last_status_received, displayed_probe_status());
-      if (displayed_probe_status() != last_status_received) {
-        LOG(ERROR) << "Unexpected status at step " << i << ".";
-        return;
-      }
-    }
-
-    EXPECT_EQ(expected_update_count, page_update_count());
-    if (page_update_count() != expected_update_count) {
-      LOG(ERROR) << (update_expected ? "Missing" : "Spurious")
-                 << " update at step " << i << ".";
-      return;
-    }
-
-    update_expected = false;
-  }
-
-  DCHECK(!update_expected);
-}
-
-TEST_F(NetErrorHelperTest, Null) {
-  // Test that we can simply create and destroy a NetErrorHelper.
-}
-
-TEST_F(NetErrorHelperTest, SuccessfulPageLoad) {
-  StartLoad(MAIN_FRAME, NORMAL_PAGE);
-  CommitLoad(MAIN_FRAME);
-  FinishLoad(MAIN_FRAME);
-
-  // Ignore spurious status.
-  ReceiveProbeStatus(chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN);
-  EXPECT_EQ(0, page_update_count());
-}
-
-TEST_F(NetErrorHelperTest, MainFrameNonDnsError) {
-  StartLoad(MAIN_FRAME, NORMAL_PAGE);
-  FailLoad(MAIN_FRAME, OTHER_ERROR);
-  StartLoad(MAIN_FRAME, ERROR_PAGE);
-  CommitLoad(MAIN_FRAME);
-  FinishLoad(MAIN_FRAME);
-
-  // Ignore spurious status.
-  ReceiveProbeStatus(chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN);
-  EXPECT_EQ(0, page_update_count());
-}
-
-TEST_F(NetErrorHelperTest, SubFrameDnsError) {
-  StartLoad(SUB_FRAME, NORMAL_PAGE);
-  FailLoad(SUB_FRAME, DNS_ERROR);
-  StartLoad(SUB_FRAME, ERROR_PAGE);
-  CommitLoad(SUB_FRAME);
-  FinishLoad(SUB_FRAME);
-
-  // Ignore spurious status.
-  ReceiveProbeStatus(chrome_common_net::DNS_PROBE_FINISHED_NXDOMAIN);
-  EXPECT_EQ(0, page_update_count());
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_FINISHED, LOAD_ERROR_START,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFail_StartedAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, STATUS_FINISHED,
-    LOAD_ERROR_START, LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, STATUS_FINISHED,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterStart_StartedAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    STATUS_FINISHED, LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterStart_StartedAfterStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    STATUS_FINISHED, LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterCommit) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    STATUS_FINISHED, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterCommit_StartedAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    LOAD_COMMIT, STATUS_FINISHED, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterCommit_StartedAfterStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, STATUS_STARTED,
-    LOAD_ERROR_START, LOAD_COMMIT, STATUS_FINISHED, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterCommit_StartedAfterCommit) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    STATUS_STARTED, STATUS_FINISHED, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFinish) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFinish_StartAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFinish_StartAfterStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, STATUS_STARTED,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFinish_StartAfterCommit) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    STATUS_STARTED, EXPECT_UPDATE, LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterFinish_StartAfterFinish) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, EXPECT_UPDATE, STATUS_STARTED, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterNewStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, LOAD_NORMAL_START, EXPECT_UPDATE, STATUS_FINISHED,
-    LOAD_COMMIT, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, NotRunAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_NOT_RUN, LOAD_ERROR_START,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, NotRunAfterStart) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, STATUS_NOT_RUN,
-    LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, NotRunAfterCommit) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    STATUS_NOT_RUN, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, NotRunAfterFinish) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, EXPECT_UPDATE, STATUS_NOT_RUN
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterNewCommit) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, LOAD_NORMAL_START, LOAD_COMMIT, STATUS_FINISHED, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-TEST_F(NetErrorHelperTest, FinishedAfterNewFinish) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, LOAD_NORMAL_START, LOAD_COMMIT, LOAD_FINISH, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-// Two iterations of FinishedAfterStart_StartAfterFail
-TEST_F(NetErrorHelperTest, TwoProbes_FinishedAfterStart_StartAfterFail) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    STATUS_FINISHED, LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH,
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, STATUS_STARTED, LOAD_ERROR_START,
-    STATUS_FINISHED, LOAD_COMMIT, EXPECT_UPDATE, LOAD_FINISH
-  };
-  RunTest(steps, arraysize(steps));
-}
-
-// Two iterations of FinishedAfterFinish
-TEST_F(NetErrorHelperTest, TwoProbes_FinishedAfterFinish) {
-  const TestStep steps[] = {
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED,
-    LOAD_NORMAL_START, LOAD_NORMAL_FAIL, LOAD_ERROR_START, LOAD_COMMIT,
-    LOAD_FINISH, EXPECT_UPDATE, STATUS_FINISHED
-  };
-  RunTest(steps, arraysize(steps));
-}