Undocks window first before side-snapping bounds

ash/wm/dock/docked_window_resizer_unittest.cc

Index: ash/wm/dock/docked_window_resizer_unittest.cc
diff --git a/ash/wm/dock/docked_window_resizer_unittest.cc b/ash/wm/dock/docked_window_resizer_unittest.cc
index 0c1a4c6f3a6316bb4beb43a86babdd998561027c..627caaf43bfcd1a02f9a237bb75dc6ad3087d169 100644
--- a/ash/wm/dock/docked_window_resizer_unittest.cc
+++ b/ash/wm/dock/docked_window_resizer_unittest.cc
@@ -24,6 +24,7 @@
 #include "ash/wm/panels/panel_layout_manager.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
+#include "ash/wm/workspace/snap_sizer.h"
 #include "base/command_line.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/root_window.h"
@@ -1302,6 +1303,63 @@ TEST_P(DockedWindowResizerTest, DragWindowWithTransientChild) {
             child->GetBoundsInScreen().origin().ToString());
 }
 
+// Tests that side snapping a window undocks it, closes the dock and then snaps.
+TEST_P(DockedWindowResizerTest, SideSnapDocked) {
+  if (!SupportsHostWindowResize() || test_panels())
+    return;
+
+  scoped_ptr<aura::Window> w1(CreateTestWindow(gfx::Rect(0, 0, 201, 201)));
+  wm::WindowState* window_state = wm::GetWindowState(w1.get());
+  DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w1.get(), 20);
+  // A window should be attached and snapped to the right edge.
+  EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
+            w1->GetBoundsInScreen().right());
+  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  DockedWindowLayoutManager* manager =
+      static_cast<DockedWindowLayoutManager*>(w1->parent()->layout_manager());
+  EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
+  EXPECT_EQ(w1->bounds().width(), docked_width(manager));
+  EXPECT_TRUE(window_state->IsDocked());
+  EXPECT_FALSE(window_state->IsSnapped());
+
+  // Side snap at right edge.
+  internal::SnapSizer::SnapWindow(window_state,
+                                  internal::SnapSizer::RIGHT_EDGE);
+  // The window should be snapped at the right edge and the dock should close.
+  EXPECT_EQ(0, docked_width(manager));
+  EXPECT_EQ(ScreenAsh::GetDisplayWorkAreaBoundsInParent(w1.get()).height(),
+            w1->bounds().height());
+  EXPECT_EQ(ScreenAsh::GetDisplayWorkAreaBoundsInParent(w1.get()).right(),
+            w1->bounds().right());
+  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_FALSE(window_state->IsDocked());
+  EXPECT_TRUE(window_state->IsSnapped());
+
+  // Dock again.
+  DragToVerticalPositionAndToEdge(DOCKED_EDGE_RIGHT, w1.get(), 20);
+  // A window should be attached and snapped to the right edge.
+  EXPECT_EQ(w1->GetRootWindow()->bounds().right(),
+            w1->GetBoundsInScreen().right());
+  EXPECT_EQ(internal::kShellWindowId_DockedContainer, w1->parent()->id());
+  EXPECT_EQ(DOCKED_ALIGNMENT_RIGHT, docked_alignment(manager));
+  EXPECT_EQ(w1->bounds().width(), docked_width(manager));
+  EXPECT_TRUE(window_state->IsDocked());
+  EXPECT_FALSE(window_state->IsSnapped());
+
+  // Side snap at left edge.
+  internal::SnapSizer::SnapWindow(window_state,
+                                  internal::SnapSizer::LEFT_EDGE);
+  // The window should be snapped at the right edge and the dock should close.
+  EXPECT_EQ(0, docked_width(manager));
+  EXPECT_EQ(ScreenAsh::GetDisplayWorkAreaBoundsInParent(w1.get()).height(),
+            w1->bounds().height());
+  EXPECT_EQ(ScreenAsh::GetDisplayWorkAreaBoundsInParent(w1.get()).x(),
+            w1->bounds().x());
+  EXPECT_EQ(internal::kShellWindowId_DefaultContainer, w1->parent()->id());
+  EXPECT_FALSE(window_state->IsDocked());
+  EXPECT_TRUE(window_state->IsSnapped());
+}
+
 // Tests run twice - on both panels and normal windows
 INSTANTIATE_TEST_CASE_P(NormalOrPanel,
                         DockedWindowResizerTest,