ui/views/controls/menu/menu_item_view_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/views/controls/menu/menu_item_view.h"
   6
   7 #include "base/strings/string16.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10 #include "ui/views/controls/menu/submenu_view.h"
  11 #include "ui/views/view.h"
  12
  13 namespace {
  14
  15 // A simple View class that will match its height to the available width.
  16 class SquareView : public views::View {
  17  public:
  18   SquareView() {}
  19   ~SquareView() override {}
  20
  21  private:
  22   gfx::Size GetPreferredSize() const override { return gfx::Size(1, 1); }
  23   int GetHeightForWidth(int width) const override { return width; }
  24 };
  25
  26 // A MenuItemView implementation with a public destructor (so we can clean up
  27 // in tests).
  28 class TestMenuItemView : public views::MenuItemView {
  29  public:
  30   TestMenuItemView() : views::MenuItemView(NULL) {}
  31   ~TestMenuItemView() override {}
  32 };
  33
  34 }  // namespace
  35
  36 TEST(MenuItemViewUnitTest, TestMenuItemViewWithFlexibleWidthChild) {
  37   TestMenuItemView root_menu;
  38   root_menu.set_owned_by_client();
  39
  40   // Append a normal MenuItemView.
  41   views::MenuItemView* label_view =
  42       root_menu.AppendMenuItemWithLabel(1, base::ASCIIToUTF16("item 1"));
  43
  44   // Append a second MenuItemView that has a child SquareView.
  45   views::MenuItemView* flexible_view =
  46       root_menu.AppendMenuItemWithLabel(2, base::string16());
  47   flexible_view->AddChildView(new SquareView());
  48   // Set margins to 0 so that we know width should match height.
  49   flexible_view->SetMargins(0, 0);
  50
  51   views::SubmenuView* submenu = root_menu.GetSubmenu();
  52
  53   // The first item should be the label view.
  54   ASSERT_EQ(label_view, submenu->GetMenuItemAt(0));
  55   gfx::Size label_size = label_view->GetPreferredSize();
  56
  57   // The second item should be the flexible view.
  58   ASSERT_EQ(flexible_view, submenu->GetMenuItemAt(1));
  59   gfx::Size flexible_size = flexible_view->GetPreferredSize();
  60
  61   // The flexible view's "preferred size" should be 1x1...
  62   EXPECT_EQ(flexible_size, gfx::Size(1, 1));
  63
  64   // ...but it should use whatever space is available to make a square.
  65   int flex_height = flexible_view->GetHeightForWidth(label_size.width());
  66   EXPECT_EQ(label_size.width(), flex_height);
  67
  68   // The submenu should be tall enough to allow for both menu items at the given
  69   // width.
  70   EXPECT_EQ(label_size.height() + flex_height,
  71             submenu->GetPreferredSize().height());
  72 }