Revert r128507 "Revert r128436 "relanding: disabled workspace_window_resizer test. fixed access-aft…

ash/monitor/multi_monitor_manager_unittest.cc

Index: ash/monitor/multi_monitor_manager_unittest.cc
diff --git a/ash/monitor/multi_monitor_manager_unittest.cc b/ash/monitor/multi_monitor_manager_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..336f91c144efb9ede6a1a330ad31af6eaadca606
--- /dev/null
+++ b/ash/monitor/multi_monitor_manager_unittest.cc
@@ -0,0 +1,178 @@
+// 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 "ash/monitor/multi_monitor_manager.h"
+
+#include "ash/shell.h"
+#include "ash/test/ash_test_base.h"
+#include "base/format_macros.h"
+#include "base/stl_util.h"
+#include "base/string_split.h"
+#include "base/stringprintf.h"
+#include "ui/aura/env.h"
+#include "ui/aura/monitor.h"
+#include "ui/aura/root_window.h"
+
+namespace ash {
+namespace test {
+
+using std::vector;
+using std::string;
+using aura::Monitor;
+
+namespace {
+
+vector<const aura::Monitor*> CreateMonitorsFromString(
+    const std::string specs) {
+  vector<const aura::Monitor*> monitors;
+  vector<string> parts;
+  base::SplitString(specs, ',', &parts);
+  for (vector<string>::const_iterator iter = parts.begin();
+       iter != parts.end(); ++iter) {
+    monitors.push_back(aura::MonitorManager::CreateMonitorFromSpec(*iter));
+  }
+  return monitors;
+}
+
+}  // namespace
+
+class MultiMonitorManagerTest : public test::AshTestBase,
+                                public aura::MonitorObserver {
+ public:
+  MultiMonitorManagerTest() : removed_count_(0U) {}
+  virtual ~MultiMonitorManagerTest() {}
+
+  virtual void SetUp() OVERRIDE {
+    AshTestBase::SetUp();
+    monitor_manager()->AddObserver(this);
+  }
+  virtual void TearDown() OVERRIDE {
+    monitor_manager()->RemoveObserver(this);
+    AshTestBase::TearDown();
+  }
+
+  aura::MonitorManager* monitor_manager() {
+    return aura::Env::GetInstance()->monitor_manager();
+  }
+  const vector<const Monitor*>& changed() const { return changed_; }
+  const vector<const Monitor*>& added() const { return added_; }
+
+  string GetCountSummary() const {
+    return StringPrintf("%"PRIuS" %"PRIuS" %"PRIuS,
+                        changed_.size(), added_.size(), removed_count_);
+  }
+
+  void reset() {
+    changed_.clear();
+    added_.clear();
+    removed_count_ = 0U;
+  }
+
+  // aura::MonitorObserver overrides:
+  virtual void OnMonitorBoundsChanged(const Monitor* monitor) OVERRIDE {
+    changed_.push_back(monitor);
+  }
+  virtual void OnMonitorAdded(Monitor* new_monitor) OVERRIDE {
+    added_.push_back(new_monitor);
+  }
+  virtual void OnMonitorRemoved(const Monitor* old_monitor) OVERRIDE {
+    ++removed_count_;
+  }
+
+  void UpdateMonitor(const std::string str) {
+    vector<const aura::Monitor*> monitors = CreateMonitorsFromString(str);
+    monitor_manager()->OnNativeMonitorsChanged(monitors);
+    STLDeleteContainerPointers(monitors.begin(), monitors.end());
+  }
+
+ private:
+  vector<const Monitor*> changed_;
+  vector<const Monitor*> added_;
+  size_t removed_count_;
+
+  DISALLOW_COPY_AND_ASSIGN(MultiMonitorManagerTest);
+};
+
+TEST_F(MultiMonitorManagerTest, NativeMonitorTest) {
+  aura::MonitorManager::set_use_fullscreen_host_window(true);
+
+  EXPECT_EQ(1U, monitor_manager()->GetNumMonitors());
+
+  // Update primary and add seconary.
+  UpdateMonitor("0+0-500x500,0+501-400x400");
+  EXPECT_EQ(2U, monitor_manager()->GetNumMonitors());
+  EXPECT_EQ("1 1 0", GetCountSummary());
+  EXPECT_EQ(monitor_manager()->GetMonitorAt(0), changed()[0]);
+  EXPECT_EQ(monitor_manager()->GetMonitorAt(1), added()[0]);
+  EXPECT_EQ("0,0 500x500", changed()[0]->bounds().ToString());
+  EXPECT_EQ("0,501 400x400", added()[0]->bounds().ToString());
+  reset();
+
+  // Delete secondary.
+  UpdateMonitor("0+0-500x500");
+  EXPECT_EQ("0 0 1", GetCountSummary());
+  reset();
+
+  // Change primary.
+  UpdateMonitor("0+0-1000x600");
+  EXPECT_EQ("1 0 0", GetCountSummary());
+  EXPECT_EQ(monitor_manager()->GetMonitorAt(0), changed()[0]);
+  EXPECT_EQ("0,0 1000x600", changed()[0]->bounds().ToString());
+  reset();
+
+  // Add secondary.
+  UpdateMonitor("0+0-1000x600,1001+0-600x400");
+  EXPECT_EQ(2U, monitor_manager()->GetNumMonitors());
+  EXPECT_EQ("0 1 0", GetCountSummary());
+  EXPECT_EQ(monitor_manager()->GetMonitorAt(1), added()[0]);
+  EXPECT_EQ("1001,0 600x400", added()[0]->bounds().ToString());
+  reset();
+
+  // Secondary removed, primary changed.
+  UpdateMonitor("0+0-800x300");
+  EXPECT_EQ(1U, monitor_manager()->GetNumMonitors());
+  EXPECT_EQ("1 0 1", GetCountSummary());
+  EXPECT_EQ(monitor_manager()->GetMonitorAt(0), changed()[0]);
+  EXPECT_EQ("0,0 800x300", changed()[0]->bounds().ToString());
+
+  aura::MonitorManager::set_use_fullscreen_host_window(false);
+}
+
+// Test in emulation mode (use_fullscreen_host_window=false)
+TEST_F(MultiMonitorManagerTest, EmulatorTest) {
+  EXPECT_EQ(1U, monitor_manager()->GetNumMonitors());
+
+  internal::MultiMonitorManager::AddRemoveMonitor();
+  // Update primary and add seconary.
+  EXPECT_EQ(2U, monitor_manager()->GetNumMonitors());
+#if defined(OS_WIN)
+  // TODO(oshima): Windows receives resize event for some reason.
+  EXPECT_EQ("1 1 0", GetCountSummary());
+#else
+  EXPECT_EQ("0 1 0", GetCountSummary());
+#endif
+  reset();
+
+  internal::MultiMonitorManager::CycleMonitor();
+  EXPECT_EQ(2U, monitor_manager()->GetNumMonitors());
+  // Observer gets called twice in this mode because
+  // it gets notified both from |OnNativeMonitorChagned|
+  // and from |RootWindowObserver|, which is the consequence of
+  // |SetHostSize()|.
+  EXPECT_EQ("4 0 0", GetCountSummary());
+  reset();
+
+  internal::MultiMonitorManager::AddRemoveMonitor();
+  EXPECT_EQ(1U, monitor_manager()->GetNumMonitors());
+  EXPECT_EQ("0 0 1", GetCountSummary());
+  reset();
+
+  internal::MultiMonitorManager::CycleMonitor();
+  EXPECT_EQ(1U, monitor_manager()->GetNumMonitors());
+  EXPECT_EQ("0 0 0", GetCountSummary());
+  reset();
+}
+
+}  // namespace test
+}  // namespace ash