Refactor ChooserBubbleUiViewDelegate

chrome/browser/ui/views/chooser_content_view_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 "chrome/browser/ui/views/chooser_content_view.h"
+
+#include "base/macros.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/grit/generated_resources.h"
+#include "components/chooser_controller/chooser_controller.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/views/controls/styled_label.h"
+#include "ui/views/controls/styled_label_listener.h"
+#include "ui/views/controls/table/table_view.h"
+#include "ui/views/controls/table/table_view_observer.h"
+
+namespace {
+
+class MockChooserController : public ChooserController {
+ public:
+  MockChooserController() : ChooserController(nullptr) {}
+  ~MockChooserController() override {}
+
+  // ChooserController:
+  size_t NumOptions() const override { return option_names_.size(); }
+
+  // ChooserController:
+  const base::string16& GetOption(size_t index) const override {
+    return option_names_[index];
+  }
+
+  // ChooserController:
+  void Select(size_t index) override {}
+  void Cancel() override {}
+  void Close() override {}
+  void OpenHelpCenterUrl() const override {}
+
+  void OptionAdded(const base::string16 option_name) {
+    option_names_.push_back(option_name);
+    if (observer())
+      observer()->OnOptionAdded(option_names_.size() - 1);
+  }
+
+  void OptionRemoved(const base::string16 option_name) {
+    for (auto it = option_names_.begin(); it != option_names_.end(); ++it) {
+      if (*it == option_name) {
+        size_t index = it - option_names_.begin();
+        option_names_.erase(it);
+        if (observer())
+          observer()->OnOptionRemoved(index);
+        return;
+      }
+    }
+  }
+
+ private:
+  std::vector<base::string16> option_names_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockChooserController);
+};
+
+class MockTableViewObserver : public views::TableViewObserver {
+ public:
+  // views::TableViewObserver:
+  MOCK_METHOD0(OnSelectionChanged, void());
+};
+
+class MockStyledLabelListener : public views::StyledLabelListener {
+ public:
+  // views::StyledLabelListener:
+  MOCK_METHOD3(StyledLabelLinkClicked,
+               void(views::StyledLabel* label,
+                    const gfx::Range& range,
+                    int event_flags));
+};
+
+}  // namespace
+
+class ChooserContentViewTest : public testing::Test {
+ public:
+  ChooserContentViewTest() {}
+
+  // testing::Test:
+  void SetUp() override {
+    mock_chooser_controller_.reset(new MockChooserController());
+    ASSERT_TRUE(mock_chooser_controller_);

[msw, 2016/06/08 00:58:45]

nit: this seems unnecessary.

[juncai, 2016/06/09 01:59:21]

Done.

+    mock_table_view_observer_.reset(new MockTableViewObserver());
+    ASSERT_TRUE(mock_table_view_observer_);

[msw, 2016/06/08 00:58:45]

nit: this seems unnecessary.

[juncai, 2016/06/09 01:59:21]

Done.

+    chooser_content_view_.reset(new ChooserContentView(
+        mock_table_view_observer_.get(), mock_chooser_controller_.get()));
+    ASSERT_TRUE(chooser_content_view_);

[msw, 2016/06/08 00:58:45]

nit: this seems unnecessary.

[juncai, 2016/06/09 01:59:21]

Done.

+    table_view_.reset(chooser_content_view_->table_view());
+    ASSERT_TRUE(table_view_);
+    table_model_ = table_view_->model();
+    ASSERT_TRUE(table_model_);
+    mock_styled_label_listener_.reset(new MockStyledLabelListener());
+    ASSERT_TRUE(mock_styled_label_listener_);

[msw, 2016/06/08 00:58:45]

nit: this seems unnecessary.

[juncai, 2016/06/09 01:59:21]

Done.

+    styled_label_.reset(chooser_content_view_->CreateFootnoteView(
+        mock_styled_label_listener_.get()));
+    ASSERT_TRUE(styled_label_);
+  }
+
+ protected:
+  std::unique_ptr<MockChooserController> mock_chooser_controller_;
+  std::unique_ptr<MockTableViewObserver> mock_table_view_observer_;
+  std::unique_ptr<ChooserContentView> chooser_content_view_;
+  std::unique_ptr<MockStyledLabelListener> mock_styled_label_listener_;
+  std::unique_ptr<views::TableView> table_view_;
+  ui::TableModel* table_model_;
+  std::unique_ptr<views::StyledLabel> styled_label_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ChooserContentViewTest);
+};
+
+TEST_F(ChooserContentViewTest, InitialState) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(0);
+
+  // Since "No devices found." needs to be displayed on the |table_view_|,
+  // the number of rows is 1.
+  EXPECT_EQ(table_view_->RowCount(), 1);

[msw, 2016/06/08 00:58:45]

nit: put expectation before the actual value here and elsewhere (see decl):
  #define EXPECT_EQ(expected, actual) \

[juncai, 2016/06/09 01:59:21]

Done.

+  EXPECT_EQ(
+      table_model_->GetText(0, 0),
+      l10n_util::GetStringUTF16(IDS_CHOOSER_BUBBLE_NO_DEVICES_FOUND_PROMPT));
+  // |table_view_| should be disabled since there is no option shown.
+  EXPECT_FALSE(table_view_->enabled());
+  // No option selected.
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest, AddOption) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(0);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  EXPECT_EQ(table_model_->GetText(0, 0), base::ASCIIToUTF16("a"));
+  // |table_view_| should be enabled since there is an option.
+  EXPECT_TRUE(table_view_->enabled());
+  // No option selected.
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  EXPECT_EQ(table_model_->GetText(1, 0), base::ASCIIToUTF16("b"));
+  EXPECT_TRUE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+  EXPECT_EQ(table_view_->RowCount(), 3);
+  EXPECT_EQ(table_model_->GetText(2, 0), base::ASCIIToUTF16("c"));
+  EXPECT_TRUE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest, RemoveOption) {
+  // Called from TableView::OnItemsRemoved().
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(3);

[msw, 2016/06/08 00:58:45]

q: why does the selection change on removing options, but not adding?

[juncai, 2016/06/09 01:59:21]

https://cs.chromium.org/chromium/src/ui/views/controls/table/table_view.cc?dr...

I guess that when items are added, they are added to the end and the already
selected item's index won't change. But when items are removed, the previously
selected item may be removed, or its index may change.

[msw, 2016/06/09 18:31:15]

Okay, it might be nice if that were only called if the selection actually
changes... but that's not important for this CL. Feel free to add a TODO there,
file a bug, or follow up.

+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("b"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  EXPECT_EQ(table_model_->GetText(0, 0), base::ASCIIToUTF16("a"));
+  EXPECT_EQ(table_model_->GetText(1, 0), base::ASCIIToUTF16("c"));
+  EXPECT_TRUE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  // Remove a non-existent option, the number of rows should not change.
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("non-existent"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  EXPECT_EQ(table_model_->GetText(0, 0), base::ASCIIToUTF16("a"));
+  EXPECT_EQ(table_model_->GetText(1, 0), base::ASCIIToUTF16("c"));
+  EXPECT_TRUE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("c"));
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  EXPECT_EQ(table_model_->GetText(0, 0), base::ASCIIToUTF16("a"));
+  EXPECT_TRUE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("a"));
+  // There is no option shown now. But since "No devices found."
+  // needs to be displayed on the |table_view_|, the number of rows is 1.
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  EXPECT_EQ(
+      table_model_->GetText(0, 0),
+      l10n_util::GetStringUTF16(IDS_CHOOSER_BUBBLE_NO_DEVICES_FOUND_PROMPT));
+  // |table_view_| should be disabled since all options are removed.
+  EXPECT_FALSE(table_view_->enabled());
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest, AddAndRemoveOption) {
+  // Called from TableView::OnItemsRemoved().
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(3);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("b"));
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("d"));
+  EXPECT_EQ(table_view_->RowCount(), 3);
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("d"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("c"));
+  // There is no option shown now. But since "No devices found."

[msw, 2016/06/08 00:58:45]

This isn't right... option "a" is still present.

[juncai, 2016/06/09 01:59:21]

Done.

+  // needs to be displayed on the |table_view_|, the number of rows is 1.
+  EXPECT_EQ(table_view_->RowCount(), 1);
+}
+
+TEST_F(ChooserContentViewTest, SelectAndDeselectAnOption) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(4);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+
+  // Select option 0.
+  table_view_->Select(0);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 0);
+
+  // Disselect option 0.

[msw, 2016/06/08 00:58:45]

nit: "Unselect" here and elsewhere.

[juncai, 2016/06/09 01:59:21]

Done.

+  table_view_->Select(-1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+
+  // Select option 1.
+  table_view_->Select(1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 1);
+
+  // Disselect option 1.
+  table_view_->Select(-1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest, SelectAnOptionAndThenSelectAnotherOption) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(3);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+
+  // Select option 0.
+  table_view_->Select(0);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 0);
+
+  // Select option 1.
+  table_view_->Select(1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 1);
+
+  // Select option 2.
+  table_view_->Select(2);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 2);
+}
+
+TEST_F(ChooserContentViewTest, SelectAnOptionAndRemoveAnotherOption) {
+  // Called one time from TableView::Select() and two times from
+  // TableView::OnItemsRemoved().
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(3);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+
+  // Select option 1.
+  table_view_->Select(1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 1);
+
+  // Remove option 0, the list becomes: b c.
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("a"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  // Since option 0 is removed, the original selected option 1 becomes
+  // the first option in the list.
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 0);
+
+  // Remove option 1.
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("c"));
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 0);
+}
+
+TEST_F(ChooserContentViewTest, SelectAnOptionAndRemoveTheSelectedOption) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(2);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("b"));
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("c"));
+
+  // Select option 1.
+  table_view_->Select(1);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 1);
+
+  // Remove option 1.
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("b"));
+  EXPECT_EQ(table_view_->RowCount(), 2);
+  // No option selected.
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest,
+       AddAnOptionAndSelectItAndRemoveTheSelectedOption) {
+  EXPECT_CALL(*mock_table_view_observer_, OnSelectionChanged()).Times(2);
+
+  mock_chooser_controller_->OptionAdded(base::ASCIIToUTF16("a"));
+
+  // Select option 0.
+  table_view_->Select(0);
+  EXPECT_EQ(table_view_->SelectedRowCount(), 1);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), 0);
+
+  // Remove option 0.
+  mock_chooser_controller_->OptionRemoved(base::ASCIIToUTF16("a"));
+  // There is no option shown now. But since "No devices found."
+  // needs to be displayed on the |table_view_|, the number of rows is 1.
+  EXPECT_EQ(table_view_->RowCount(), 1);
+  EXPECT_EQ(
+      table_model_->GetText(0, 0),
+      l10n_util::GetStringUTF16(IDS_CHOOSER_BUBBLE_NO_DEVICES_FOUND_PROMPT));
+  // |table_view_| should be disabled since all options are removed.
+  EXPECT_FALSE(table_view_->enabled());
+  // No option selected.
+  EXPECT_EQ(table_view_->SelectedRowCount(), 0);
+  EXPECT_EQ(table_view_->FirstSelectedRow(), -1);
+}
+
+TEST_F(ChooserContentViewTest, ClickStyledLabelLink) {
+  EXPECT_CALL(*mock_styled_label_listener_,
+              StyledLabelLinkClicked(styled_label_.get(), testing::_, 0))
+      .Times(1);
+  styled_label_->LinkClicked(nullptr, 0);
+}