Create a strict order in ReadingListSpecifics

components/reading_list/ios/reading_list_entry_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 "components/reading_list/ios/reading_list_entry.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "components/reading_list/ios/proto/reading_list.pb.h"
 #include "components/sync/protocol/reading_list_specifics.pb.h"
@@ skipping 298 matching lines @@
   EXPECT_EQ(waiting_entry->UpdateTime(), 2);
   EXPECT_EQ(waiting_entry->FailedDownloadCounter(), 2);
   EXPECT_EQ(waiting_entry->DistilledState(), ReadingListEntry::WAITING);
   EXPECT_EQ(waiting_entry->DistilledPath(), base::FilePath());
   base::Time waiting_next_call =
       base::Time::Now() + waiting_entry->TimeUntilNextTry();
   base::TimeDelta delta = next_call - waiting_next_call;
   EXPECT_NEAR(delta.InMillisecondsRoundedUp(), 0, 10);
 }
 
-// Tests that the merging of two ReadingListEntry.
-TEST(ReadingListEntry, MergeLocalStateFrom) {
+// Tests the merging of two ReadingListEntry.
+TEST(ReadingListEntry, MergeWithEntry) {
   ReadingListEntry local_entry(GURL("http://example.com/"), "title");
+  local_entry.SetDistilledState(ReadingListEntry::ERROR);
   base::Time next_call = base::Time::Now() + local_entry.TimeUntilNextTry();
   int64_t local_update_time_us = local_entry.UpdateTime();
+
+  ReadingListEntry sync_entry(GURL("http://example.com/"), "title2");
+  sync_entry.SetDistilledState(ReadingListEntry::ERROR);
+  int64_t sync_update_time_us = sync_entry.UpdateTime();
+  EXPECT_NE(local_update_time_us, sync_update_time_us);
+  local_entry.MergeWithEntry(sync_entry);
+  EXPECT_EQ(local_entry.URL().spec(), "http://example.com/");
+  EXPECT_EQ(local_entry.Title(), "title2");
+  EXPECT_FALSE(local_entry.HasBeenSeen());
+  EXPECT_EQ(local_entry.UpdateTime(), sync_update_time_us);
+  EXPECT_EQ(local_entry.FailedDownloadCounter(), 1);
+  EXPECT_EQ(local_entry.DistilledState(), ReadingListEntry::ERROR);
+  base::Time merge_next_call =
+      base::Time::Now() + local_entry.TimeUntilNextTry();
+  base::TimeDelta delta = merge_next_call - next_call;
+  EXPECT_NEAR(delta.InMillisecondsRoundedUp(), 0, 10);
+}
+
+// Tests the merging of two ReadingListEntry, the oldest one SEEN and the newer
+// UNSEEN.
+TEST(ReadingListEntry, MergeWithEntrySeen) {
+  ReadingListEntry local_entry(GURL("http://example.com/"), "title");
+  local_entry.SetRead(true);
+  int64_t local_update_time_us = local_entry.UpdateTime();
   local_entry.SetDistilledPath(base::FilePath("distilled/page.html"));
 
-  ReadingListEntry sync_entry(GURL("http://example2.com/"), "title2");
-  sync_entry.SetDistilledState(ReadingListEntry::ERROR);
+  ReadingListEntry sync_entry(GURL("http://example.com/"), "title2");
   int64_t sync_update_time_us = sync_entry.UpdateTime();
   EXPECT_NE(local_update_time_us, sync_update_time_us);
-  sync_entry.MergeLocalStateFrom(local_entry);
-  EXPECT_EQ(sync_entry.URL().spec(), "http://example2.com/");
-  EXPECT_EQ(sync_entry.Title(), "title2");
-  EXPECT_EQ(sync_entry.UpdateTime(), sync_update_time_us);
-  EXPECT_EQ(sync_entry.FailedDownloadCounter(), 0);
-  EXPECT_EQ(sync_entry.DistilledState(), ReadingListEntry::PROCESSED);
-  EXPECT_EQ(sync_entry.DistilledPath().value(), "distilled/page.html");
-  base::Time sync_next_call = base::Time::Now() + sync_entry.TimeUntilNextTry();
-  base::TimeDelta delta = next_call - sync_next_call;
-  EXPECT_NEAR(delta.InMillisecondsRoundedUp(), 0, 10);
+  local_entry.MergeWithEntry(sync_entry);
+  EXPECT_EQ(local_entry.URL().spec(), "http://example.com/");
+  EXPECT_EQ(local_entry.Title(), "title2");
+  EXPECT_TRUE(local_entry.HasBeenSeen());
+  EXPECT_EQ(local_entry.UpdateTime(), sync_update_time_us);
+  EXPECT_EQ(local_entry.FailedDownloadCounter(), 0);
+  EXPECT_EQ(local_entry.DistilledState(), ReadingListEntry::PROCESSED);
+  EXPECT_EQ(local_entry.DistilledPath().value(), "distilled/page.html");
 }