Implement unittest for CandidateWindowView.

chrome/browser/chromeos/input_method/candidate_window_view_unittest.cc

Index: chrome/browser/chromeos/input_method/candidate_window_view_unittest.cc
diff --git a/chrome/browser/chromeos/input_method/candidate_window_view_unittest.cc b/chrome/browser/chromeos/input_method/candidate_window_view_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f3e62f92b724adb6908de8176886888a35fd3224
--- /dev/null
+++ b/chrome/browser/chromeos/input_method/candidate_window_view_unittest.cc
@@ -0,0 +1,123 @@
+// Copyright (c) 2011 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/browser/chromeos/input_method/candidate_window_view.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+namespace input_method {
+
+TEST(CandidateWindowViewTest, ShouldUpdateCandidateViewsTest) {
+  // This test verifies the process of judging update lookup-table or not.
+  // This judgement is handled by ShouldUpdateCandidateViews, which returns true
+  // if update is necessary and vice versa.
+  const char* kSampleCandidate1 = "Sample Candidate 1";
+  const char* kSampleCandidate2 = "Sample Candidate 2";
+  const char* kSampleCandidate3 = "Sample Candidate 3";
+
+  const char* kSampleAnnotation1 = "Sample Annotation 1";
+  const char* kSampleAnnotation2 = "Sample Annotation 2";
+  const char* kSampleAnnotation3 = "Sample Annotation 3";
+
+  const char* kSampleLabel1 = "Sample Label 1";
+  const char* kSampleLabel2 = "Sample Label 2";
+  const char* kSampleLabel3 = "Sample Label 3";
+
+  InputMethodLookupTable old_table;
+  InputMethodLookupTable new_table;
+
+  old_table.visible = true;
+  old_table.cursor_absolute_index = 0;
+  old_table.page_size = 1;
+  old_table.candidates.clear();
+  old_table.orientation = InputMethodLookupTable::kVertical;
+  old_table.labels.clear();
+  old_table.annotations.clear();
+
+  new_table = old_table;
+
+  EXPECT_FALSE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                               new_table));
+
+  new_table.visible = false;
+  // Visibility would be ignored.
+  EXPECT_FALSE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                               new_table));
+  new_table = old_table;
+  new_table.candidates.push_back(kSampleCandidate1);
+  old_table.candidates.push_back(kSampleCandidate1);
+  EXPECT_FALSE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                               new_table));
+  new_table.labels.push_back(kSampleLabel1);
+  old_table.labels.push_back(kSampleLabel1);
+  EXPECT_FALSE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                               new_table));
+  new_table.annotations.push_back(kSampleAnnotation1);
+  old_table.annotations.push_back(kSampleAnnotation1);
+  EXPECT_FALSE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                               new_table));
+
+  new_table.cursor_absolute_index = 1;
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table = old_table;
+
+  new_table.page_size = 2;
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table = old_table;
+
+  new_table.orientation = InputMethodLookupTable::kHorizontal;
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+
+  new_table = old_table;
+  new_table.candidates.push_back(kSampleCandidate2);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  old_table.candidates.push_back(kSampleCandidate3);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.candidates.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.candidates.push_back(kSampleCandidate2);
+  old_table.candidates.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+
+  new_table = old_table;
+  new_table.labels.push_back(kSampleLabel2);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  old_table.labels.push_back(kSampleLabel3);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.labels.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.labels.push_back(kSampleLabel2);
+  old_table.labels.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+
+  new_table = old_table;
+  new_table.annotations.push_back(kSampleAnnotation2);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  old_table.annotations.push_back(kSampleAnnotation3);
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.annotations.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+  new_table.annotations.push_back(kSampleAnnotation2);
+  old_table.annotations.clear();
+  EXPECT_TRUE(CandidateWindowView::ShouldUpdateCandidateViews(old_table,
+                                                              new_table));
+}
+
+}  // namespace input_method
+}  // namespace chromeos