Re-land r51526

views/controls/tabbed_pane/tabbed_pane_unittest.cc

+// Copyright (c) 2010 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/message_loop.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "views/controls/tabbed_pane/tabbed_pane.h"
+#include "views/window/window.h"
+#include "views/window/window_delegate.h"
+
+namespace views {
+
+// A view for testing that takes a fixed preferred size upon construction.
+class FixedSizeView : public View {
+ public:
+  FixedSizeView(const gfx::Size& size)
+    : size_(size) {}
+
+  virtual gfx::Size GetPreferredSize() {
+    return size_;
+  }
+
+ private:
+  const gfx::Size size_;
+
+  DISALLOW_COPY_AND_ASSIGN(FixedSizeView);
+};
+
+class TabbedPaneTest : public testing::Test, WindowDelegate {
+ public:
+  TabbedPaneTest() {}
+
+  TabbedPane* tabbed_pane_;
+
+ private:
+  virtual void SetUp() {
+    tabbed_pane_ = new TabbedPane();
+    window_ = Window::CreateChromeWindow(NULL, gfx::Rect(0, 0, 100, 100), this);
+    window_->Show();
+  }
+
+  virtual void TearDown() {
+    window_->Close();
+    message_loop_.RunAllPending();

[Mattias Nissler (ping if slow), 2010/07/05 07:54:27]

this line is new.

+  }
+
+  virtual views::View* GetContentsView() {
+    return tabbed_pane_;
+  }
+
+  MessageLoopForUI message_loop_;
+  Window* window_;
+
+  DISALLOW_COPY_AND_ASSIGN(TabbedPaneTest);
+};
+
+// Tests that TabbedPane::GetPreferredSize() and TabbedPane::Layout().
+TEST_F(TabbedPaneTest, SizeAndLayout) {
+  View* child1 = new FixedSizeView(gfx::Size(20, 10));
+  tabbed_pane_->AddTab(L"tab1", child1);
+  View* child2 = new FixedSizeView(gfx::Size(5, 5));
+  tabbed_pane_->AddTab(L"tab2", child2);
+  tabbed_pane_->SelectTabAt(0);
+
+  // Check that the preferred size is larger than the largest child.
+  gfx::Size pref(tabbed_pane_->GetPreferredSize());
+  EXPECT_GT(pref.width(), 20);
+  EXPECT_GT(pref.height(), 10);
+
+  // The bounds of our children should be smaller than the tabbed pane's bounds.
+  tabbed_pane_->SetBounds(0, 0, 100, 200);
+  gfx::Rect bounds(child1->bounds());
+  EXPECT_GT(bounds.width(), 0);
+  EXPECT_LT(bounds.width(), 100);
+  EXPECT_GT(bounds.height(), 0);
+  EXPECT_LT(bounds.height(), 200);
+
+  // If we switch to the other tab, it should get assigned the same bounds.
+  tabbed_pane_->SelectTabAt(1);
+  EXPECT_EQ(bounds, child2->bounds());
+}
+
+} // namespace views