cc/input/scroll_state_unittest.cc

   1 // Copyright 2015 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 "cc/input/scroll_state.h"
   6
   7 #include "cc/layers/layer_impl.h"
   8 #include "cc/test/fake_impl_proxy.h"
   9 #include "cc/test/fake_layer_tree_host_impl.h"
  10 #include "cc/test/test_shared_bitmap_manager.h"
  11 #include "cc/test/test_task_graph_runner.h"
  12 #include "testing/gmock/include/gmock/gmock.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 namespace cc {
  16
  17 class ScrollStateTest : public testing::Test {};
  18
  19 TEST_F(ScrollStateTest, ConsumeDeltaNative) {
  20   const float delta_x = 12.3f;
  21   const float delta_y = 3.9f;
  22
  23   const float delta_x_to_consume = 1.2f;
  24   const float delta_y_to_consume = 2.3f;
  25
  26   ScrollState scrollState(delta_x, delta_y, 0, 0, false /* should_propagate */,
  27                           false /* delta_consumed_for_scroll_sequence */,
  28                           false /* is_direct_manipulation */);
  29   EXPECT_FLOAT_EQ(delta_x, scrollState.delta_x());
  30   EXPECT_FLOAT_EQ(delta_y, scrollState.delta_y());
  31   EXPECT_FALSE(scrollState.delta_consumed_for_scroll_sequence());
  32   EXPECT_FALSE(scrollState.FullyConsumed());
  33
  34   scrollState.ConsumeDelta(0, 0);
  35   EXPECT_FLOAT_EQ(delta_x, scrollState.delta_x());
  36   EXPECT_FLOAT_EQ(delta_y, scrollState.delta_y());
  37   EXPECT_FALSE(scrollState.delta_consumed_for_scroll_sequence());
  38   EXPECT_FALSE(scrollState.FullyConsumed());
  39
  40   scrollState.ConsumeDelta(delta_x_to_consume, 0);
  41   EXPECT_FLOAT_EQ(delta_x - delta_x_to_consume, scrollState.delta_x());
  42   EXPECT_FLOAT_EQ(delta_y, scrollState.delta_y());
  43   EXPECT_TRUE(scrollState.delta_consumed_for_scroll_sequence());
  44   EXPECT_FALSE(scrollState.FullyConsumed());
  45
  46   scrollState.ConsumeDelta(0, delta_y_to_consume);
  47   EXPECT_FLOAT_EQ(delta_x - delta_x_to_consume, scrollState.delta_x());
  48   EXPECT_FLOAT_EQ(delta_y - delta_y_to_consume, scrollState.delta_y());
  49   EXPECT_TRUE(scrollState.delta_consumed_for_scroll_sequence());
  50   EXPECT_FALSE(scrollState.FullyConsumed());
  51
  52   scrollState.ConsumeDelta(scrollState.delta_x(), scrollState.delta_y());
  53   EXPECT_TRUE(scrollState.delta_consumed_for_scroll_sequence());
  54   EXPECT_TRUE(scrollState.FullyConsumed());
  55 }
  56
  57 TEST_F(ScrollStateTest, CurrentNativeScrollingScrollable) {
  58   ScrollState scrollState(0, 0, 0, 0, false, false, false);
  59
  60   FakeImplProxy proxy;
  61   TestSharedBitmapManager shared_bitmap_manager;
  62   TestTaskGraphRunner task_graph_runner;
  63   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
  64                                   &task_graph_runner);
  65
  66   scoped_ptr<LayerImpl> layer_impl =
  67       LayerImpl::Create(host_impl.active_tree(), 1);
  68   scrollState.set_current_native_scrolling_layer(layer_impl.get());
  69   EXPECT_EQ(layer_impl, scrollState.current_native_scrolling_layer());
  70 }
  71
  72 TEST_F(ScrollStateTest, FullyConsumed) {
  73   ScrollState scrollState(1, 3, 0, 0, 0, false, false);
  74   EXPECT_FALSE(scrollState.FullyConsumed());
  75
  76   scrollState.ConsumeDelta(1, 3);
  77   EXPECT_TRUE(scrollState.FullyConsumed());
  78 }
  79 }  // namespace cc