Implement LatencyInfo StructTraits

ui/events/mojo/struct_traits_unittest.cc

Index: ui/events/mojo/struct_traits_unittest.cc
diff --git a/ui/events/mojo/struct_traits_unittest.cc b/ui/events/mojo/struct_traits_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3cd51cb068473ab763c7a43c6d766c9695e6282c
--- /dev/null
+++ b/ui/events/mojo/struct_traits_unittest.cc
@@ -0,0 +1,141 @@
+// Copyright 2016 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 "base/message_loop/message_loop.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/mojo/traits_test_service.mojom.h"
+
+namespace ui {
+
+namespace {
+
+class StructTraitsTest : public testing::Test, public mojom::TraitsTestService {
+ public:
+  StructTraitsTest() {}
+
+ protected:
+  mojom::TraitsTestServicePtr GetTraitsTestProxy() {
+    return traits_test_bindings_.CreateInterfacePtrAndBind(this);
+  }
+
+ private:
+  // TraitsTestService:
+  void EchoInputCoordinate(
+      const LatencyInfo::InputCoordinate& i,
+      const EchoInputCoordinateCallback& callback) override {
+    callback.Run(i);
+  }
+
+  void EchoLatencyComponent(
+      const LatencyInfo::LatencyComponent& l,
+      const EchoLatencyComponentCallback& callback) override {
+    callback.Run(l);
+  }
+
+  void EchoLatencyComponentId(
+      const std::pair<LatencyComponentType, int64_t>& id,
+      const EchoLatencyComponentIdCallback& callback) override {
+    callback.Run(id);
+  }
+
+  void EchoLatencyInfo(const LatencyInfo& info,
+                       const EchoLatencyInfoCallback& callback) override {
+    callback.Run(info);
+  }
+
+  base::MessageLoop loop_;
+  mojo::BindingSet<TraitsTestService> traits_test_bindings_;
+  DISALLOW_COPY_AND_ASSIGN(StructTraitsTest);
+};
+
+}  // namespace
+
+TEST_F(StructTraitsTest, InputCoordinate) {
+  const float x = 1337.5f;
+  const float y = 7331.6f;
+  LatencyInfo::InputCoordinate input(x, y);
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  LatencyInfo::InputCoordinate output;
+  proxy->EchoInputCoordinate(input, &output);
+  EXPECT_EQ(x, output.x);
+  EXPECT_EQ(y, output.y);
+}
+
+TEST_F(StructTraitsTest, LatencyComponent) {
+  const int64_t sequence_number = 13371337;
+  const base::TimeTicks event_time = base::TimeTicks::Now();
+  const uint32_t event_count = 1234;
+  LatencyInfo::LatencyComponent input;
+  input.sequence_number = sequence_number;
+  input.event_time = event_time;
+  input.event_count = event_count;
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  LatencyInfo::LatencyComponent output;
+  proxy->EchoLatencyComponent(input, &output);
+  EXPECT_EQ(sequence_number, output.sequence_number);
+  EXPECT_EQ(event_time, output.event_time);
+  EXPECT_EQ(event_count, output.event_count);
+}
+
+TEST_F(StructTraitsTest, LatencyComponentId) {
+  const LatencyComponentType type =
+      INPUT_EVENT_LATENCY_SCROLL_UPDATE_ORIGINAL_COMPONENT;
+  const int64_t id = 1337;
+  std::pair<LatencyComponentType, int64_t> input(type, id);
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  std::pair<LatencyComponentType, int64_t> output;
+  proxy->EchoLatencyComponentId(input, &output);
+  EXPECT_EQ(type, output.first);
+  EXPECT_EQ(id, output.second);
+}
+
+TEST_F(StructTraitsTest, LatencyInfo) {
+  LatencyInfo latency;
+  ASSERT_FALSE(latency.terminated());
+  ASSERT_EQ(0u, latency.input_coordinates_size());
+  latency.AddLatencyNumber(INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 1234, 0);
+  latency.AddLatencyNumber(INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 1234, 100);
+  latency.AddLatencyNumber(INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT,
+                           1234, 0);
+  EXPECT_TRUE(
+      latency.AddInputCoordinate(LatencyInfo::InputCoordinate(100, 200)));
+  EXPECT_TRUE(
+      latency.AddInputCoordinate(LatencyInfo::InputCoordinate(101, 201)));
+  // Up to 2 InputCoordinate is allowed.
+  EXPECT_FALSE(
+      latency.AddInputCoordinate(LatencyInfo::InputCoordinate(102, 202)));
+
+  EXPECT_EQ(100, latency.trace_id());
+  EXPECT_TRUE(latency.terminated());
+  EXPECT_EQ(2u, latency.input_coordinates_size());
+
+  mojom::TraitsTestServicePtr proxy = GetTraitsTestProxy();
+  LatencyInfo output;
+  proxy->EchoLatencyInfo(latency, &output);
+
+  EXPECT_EQ(latency.trace_id(), output.trace_id());
+  EXPECT_EQ(latency.terminated(), output.terminated());
+  EXPECT_EQ(latency.input_coordinates_size(), output.input_coordinates_size());
+  for (size_t i = 0; i < latency.input_coordinates_size(); i++) {
+    EXPECT_EQ(latency.input_coordinates()[i].x,
+              output.input_coordinates()[i].x);
+    EXPECT_EQ(latency.input_coordinates()[i].y,
+              output.input_coordinates()[i].y);
+  }
+
+  EXPECT_TRUE(output.FindLatency(INPUT_EVENT_LATENCY_ORIGINAL_COMPONENT, 1234,
+                                 nullptr));
+
+  LatencyInfo::LatencyComponent rwh_comp;
+  EXPECT_TRUE(output.FindLatency(INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 1234,
+                                 &rwh_comp));
+  EXPECT_EQ(100, rwh_comp.sequence_number);
+  EXPECT_EQ(1u, rwh_comp.event_count);
+
+  EXPECT_TRUE(output.FindLatency(
+      INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 1234, nullptr));
+}
+
+}  // namespace ui