ui/base/x/selection_requestor_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/x/selection_requestor.h"
   6
   7 #include "base/memory/ref_counted_memory.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11 #include "ui/base/x/selection_utils.h"
  12 #include "ui/base/x/x11_util.h"
  13 #include "ui/events/platform/platform_event_source.h"
  14 #include "ui/gfx/x/x11_atom_cache.h"
  15 #include "ui/gfx/x/x11_types.h"
  16
  17 #include <X11/Xlib.h>
  18
  19 namespace ui {
  20
  21 namespace {
  22
  23 const char* kAtomsToCache[] = {
  24     "STRING",
  25     NULL
  26 };
  27
  28 }  // namespace
  29
  30 class SelectionRequestorTest : public testing::Test {
  31  public:
  32   SelectionRequestorTest()
  33       : x_display_(gfx::GetXDisplay()),
  34         x_window_(None),
  35         atom_cache_(gfx::GetXDisplay(), kAtomsToCache) {
  36     atom_cache_.allow_uncached_atoms();
  37   }
  38
  39   ~SelectionRequestorTest() override {}
  40
  41   // Responds to the SelectionRequestor's XConvertSelection() request by
  42   // - Setting the property passed into the XConvertSelection() request to
  43   //   |value|.
  44   // - Sending a SelectionNotify event.
  45   void SendSelectionNotify(XAtom selection,
  46                            XAtom target,
  47                            const std::string& value) {
  48     ui::SetStringProperty(x_window_,
  49                           requestor_->x_property_,
  50                           atom_cache_.GetAtom("STRING"),
  51                           value);
  52
  53     XEvent xev;
  54     xev.type = SelectionNotify;
  55     xev.xselection.serial = 0u;
  56     xev.xselection.display = x_display_;
  57     xev.xselection.requestor = x_window_;
  58     xev.xselection.selection = selection;
  59     xev.xselection.target = target;
  60     xev.xselection.property = requestor_->x_property_;
  61     xev.xselection.time = CurrentTime;
  62     xev.xselection.type = SelectionNotify;
  63     requestor_->OnSelectionNotify(xev);
  64   }
  65
  66  protected:
  67   void SetUp() override {
  68     // Make X11 synchronous for our display connection.
  69     XSynchronize(x_display_, True);
  70
  71     // Create a window for the selection requestor to use.
  72     x_window_ = XCreateWindow(x_display_,
  73                               DefaultRootWindow(x_display_),
  74                               0, 0, 10, 10,    // x, y, width, height
  75                               0,               // border width
  76                               CopyFromParent,  // depth
  77                               InputOnly,
  78                               CopyFromParent,  // visual
  79                               0,
  80                               NULL);
  81
  82     event_source_ = ui::PlatformEventSource::CreateDefault();
  83     CHECK(ui::PlatformEventSource::GetInstance());
  84     requestor_.reset(new SelectionRequestor(x_display_, x_window_, NULL));
  85   }
  86
  87   void TearDown() override {
  88     requestor_.reset();
  89     event_source_.reset();
  90     XDestroyWindow(x_display_, x_window_);
  91     XSynchronize(x_display_, False);
  92   }
  93
  94   Display* x_display_;
  95
  96   // |requestor_|'s window.
  97   XID x_window_;
  98
  99   scoped_ptr<ui::PlatformEventSource> event_source_;
 100   scoped_ptr<SelectionRequestor> requestor_;
 101
 102   base::MessageLoopForUI message_loop_;
 103   X11AtomCache atom_cache_;
 104
 105  private:
 106   DISALLOW_COPY_AND_ASSIGN(SelectionRequestorTest);
 107 };
 108
 109 namespace {
 110
 111 // Converts |selection| to |target| and checks the returned values.
 112 void PerformBlockingConvertSelection(SelectionRequestor* requestor,
 113                                      X11AtomCache* atom_cache,
 114                                      XAtom selection,
 115                                      XAtom target,
 116                                      const std::string& expected_data) {
 117   scoped_refptr<base::RefCountedMemory> out_data;
 118   size_t out_data_items = 0u;
 119   XAtom out_type = None;
 120   EXPECT_TRUE(requestor->PerformBlockingConvertSelection(
 121       selection, target, &out_data, &out_data_items, &out_type));
 122   EXPECT_EQ(expected_data, ui::RefCountedMemoryToString(out_data));
 123   EXPECT_EQ(expected_data.size(), out_data_items);
 124   EXPECT_EQ(atom_cache->GetAtom("STRING"), out_type);
 125 }
 126
 127 }  // namespace
 128
 129 // Test that SelectionRequestor correctly handles receiving a request while it
 130 // is processing another request.
 131 TEST_F(SelectionRequestorTest, NestedRequests) {
 132   // Assume that |selection| will have no owner. If there is an owner, the owner
 133   // will set the property passed into the XConvertSelection() request which is
 134   // undesirable.
 135   XAtom selection = atom_cache_.GetAtom("FAKE_SELECTION");
 136
 137   XAtom target1 = atom_cache_.GetAtom("TARGET1");
 138   XAtom target2 = atom_cache_.GetAtom("TARGET2");
 139
 140   base::MessageLoopForUI* loop = base::MessageLoopForUI::current();
 141   loop->PostTask(FROM_HERE,
 142                  base::Bind(&PerformBlockingConvertSelection,
 143                             base::Unretained(requestor_.get()),
 144                             base::Unretained(&atom_cache_),
 145                             selection,
 146                             target2,
 147                             "Data2"));
 148   loop->PostTask(FROM_HERE,
 149                  base::Bind(&SelectionRequestorTest::SendSelectionNotify,
 150                             base::Unretained(this),
 151                             selection,
 152                             target1,
 153                             "Data1"));
 154   loop->PostTask(FROM_HERE,
 155                  base::Bind(&SelectionRequestorTest::SendSelectionNotify,
 156                             base::Unretained(this),
 157                             selection,
 158                             target2,
 159                             "Data2"));
 160   PerformBlockingConvertSelection(
 161       requestor_.get(), &atom_cache_, selection, target1, "Data1");
 162 }
 163
 164 }  // namespace ui