Improve panel tests by properly waiting for expected conditions.

chrome/browser/ui/panels/test_panel_strip_squeeze_observer.cc

+// Copyright (c) 2012 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/panels/test_panel_strip_squeeze_observer.h"
+
+#include "chrome/browser/ui/panels/docked_panel_strip.h"
+#include "chrome/browser/ui/panels/panel.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "content/public/browser/notification_source.h"
+
+PanelStripSqueezeObserver::PanelStripSqueezeObserver(
+    DockedPanelStrip* strip, Panel* active_panel)
+    : TestPanelNotificationObserver(
+        chrome::NOTIFICATION_PANEL_STRIP_UPDATED,
+        content::Source<PanelStrip>(strip)),
+      panel_strip_(strip),
+      active_panel_(active_panel) {
+}
+
+PanelStripSqueezeObserver::~PanelStripSqueezeObserver() {}
+
+bool PanelStripSqueezeObserver::IsSqueezed(Panel* panel) {
+  return panel->GetBounds().width() < panel->GetRestoredBounds().width();
+}
+
+bool PanelStripSqueezeObserver::AtExpectedState() {
+  const DockedPanelStrip::Panels& panels = panel_strip_->panels();
+  for (DockedPanelStrip::Panels::const_iterator iter = panels.begin();
+       iter != panels.end(); ++iter) {
+    if (*iter == active_panel_) {
+      if (IsSqueezed(*iter))
+        return false;
+    } else if (!IsSqueezed(*iter)) {
+      return false;
+    }
+  }
+  return true;
+}