Find reading list entry state in model from url

ios/chrome/browser/reading_list/reading_list_model_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 "base/bind.h"
 #include "ios/chrome/browser/reading_list/reading_list_model_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
@@ skipping 316 matching lines @@
   // Action.
   bool result = model_->CallbackEntryURL(
       callback_url,
       base::Bind(&ReadingListModelTest::Callback, base::Unretained(this)));
 
   // Test.
   EXPECT_FALSE(result);
   EXPECT_FALSE(CallbackCalled());
 }
 
+TEST_F(ReadingListModelTest, EntryStateByURL) {
+  // Setup.
+  const GURL not_present("http://not.present");
+  const GURL unread("http://foo.bar");
+  model_->AddEntry(unread, "sample");
+  const GURL read("http://example.com");
+  model_->AddEntry(read, "sample");
+  model_->MarkReadByURL(read);
+
+  // Action/Test.
+  EXPECT_EQ(ReadingListModel::EntryState::READ, model_->EntryStateByURL(read));
+  EXPECT_EQ(ReadingListModel::EntryState::UNREAD,
+            model_->EntryStateByURL(unread));
+  EXPECT_EQ(ReadingListModel::EntryState::NOT_PRESENT,
+            model_->EntryStateByURL(not_present));
+}
+
 }  // namespace