Now that the launcher is sized to the width of the root window we need

ui/aura_shell/launcher/launcher_unittest.cc

+// 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 "ui/aura_shell/launcher/launcher.h"
+
+#include "ui/aura_shell/shell.h"
+#include "ui/aura_shell/test/aura_shell_test_base.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+typedef aura_shell::test::AuraShellTestBase LauncherTest;
+
+namespace aura_shell {
+
+// Makes sure invoking SetStatusWidth on the launcher changes the size of the
+// LauncherView.
+TEST_F(LauncherTest, SetStatusWidth) {
+  Launcher* launcher = Shell::GetInstance()->launcher();
+  ASSERT_TRUE(launcher);
+  views::View* launcher_view = launcher->widget()->GetContentsView();
+  ASSERT_EQ(1, launcher_view->child_count());
+  launcher_view = launcher_view->child_at(0);
+
+  int total_width = launcher->widget()->GetWindowScreenBounds().width();
+  ASSERT_GT(total_width, 0);
+  launcher->SetStatusWidth(total_width / 2);
+  EXPECT_EQ(total_width - total_width / 2, launcher_view->width());
+}
+
+}  // namespace aura_shell