MediaPerceptionPrivate API impl and testing.

extensions/browser/api/media_perception_private/conversion_utils_unittest.cc

+// Copyright (c) 2017 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 "extensions/browser/api/media_perception_private/conversion_utils.h"
+
+#include "chromeos/media_perception/media_perception.pb.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media_perception = extensions::api::media_perception_private;
+
+namespace extensions {
+
+namespace {
+const char kTestDeviceContext[] = "Video camera";
+}  // namespace
+
+void InitializeFakeFramePerception(mri::FramePerception* frame_perception) {
+  frame_perception->set_frame_id(2);
+  frame_perception->set_frame_width_in_px(3);
+  frame_perception->set_frame_height_in_px(4);

[tbarzic, 2017/05/17 21:04:42]

move helper methods to namespace {}

[Luke Sorenson, 2017/05/17 23:07:48]

Done.

+  frame_perception->set_timestamp(5);
+  mri::Entity* e_one = frame_perception->add_entity();
+  e_one->set_id(6);
+  e_one->set_type(mri::Entity::FACE);
+  e_one->set_confidence(7);
+  mri::Entity* e_two = frame_perception->add_entity();
+  e_two->set_id(8);
+  e_two->set_type(mri::Entity::PERSON);
+  e_two->set_confidence(9);
+  mri::BoundingBox* b_one = e_one->mutable_bounding_box();
+  b_one->mutable_top_left()->set_x(10);
+  b_one->mutable_top_left()->set_y(11);

[tbarzic, 2017/05/17 21:04:41]

can you tests cases where some of these are null?

[Luke Sorenson, 2017/05/17 23:07:48]

Done.

+  b_one->mutable_bottom_right()->set_x(12);
+  b_one->mutable_bottom_right()->set_y(13);
+  b_one->set_normalized(false);
+  mri::BoundingBox* b_two = e_two->mutable_bounding_box();
+  b_two->mutable_top_left()->set_x(14);
+  b_two->mutable_top_left()->set_y(15);
+  b_two->mutable_bottom_right()->set_x(16);
+  b_two->mutable_bottom_right()->set_y(17);
+  b_two->set_normalized(true);
+}
+
+void ValidateFramePerceptionResult(
+    const media_perception::FramePerception& fp_result) {
+  EXPECT_EQ(*fp_result.frame_id, 2);
+  EXPECT_EQ(*fp_result.frame_width_in_px, 3);
+  EXPECT_EQ(*fp_result.frame_height_in_px, 4);
+  EXPECT_EQ(*fp_result.timestamp, 5);
+  const auto& e_result_one = (*fp_result.entities)[0];
+  EXPECT_EQ(*e_result_one.id, 6);
+  EXPECT_EQ(*e_result_one.confidence, 7);
+  EXPECT_EQ(e_result_one.type, media_perception::ENTITY_TYPE_FACE);
+  const auto& e_result_two = (*fp_result.entities)[1];
+  EXPECT_EQ(*e_result_two.id, 8);
+  EXPECT_EQ(*e_result_two.confidence, 9);
+  EXPECT_EQ(e_result_two.type, media_perception::ENTITY_TYPE_PERSON);
+  const auto& b_result_one = *e_result_one.bounding_box;
+  EXPECT_EQ(*(*b_result_one.top_left).x, 10);
+  EXPECT_EQ(*(*b_result_one.top_left).y, 11);
+  EXPECT_EQ(*(*b_result_one.bottom_right).x, 12);
+  EXPECT_EQ(*(*b_result_one.bottom_right).y, 13);
+  EXPECT_FALSE(*b_result_one.normalized);
+  const auto& b_result_two = *e_result_two.bounding_box;
+  EXPECT_EQ(*(*b_result_two.top_left).x, 14);
+  EXPECT_EQ(*(*b_result_two.top_left).y, 15);
+  EXPECT_EQ(*(*b_result_two.bottom_right).x, 16);
+  EXPECT_EQ(*(*b_result_two.bottom_right).y, 17);
+  EXPECT_TRUE(*b_result_two.normalized);
+}
+
+void InitializeFakeImageFrameData(mri::ImageFrame* image_frame) {
+  image_frame->set_width(1);
+  image_frame->set_height(2);
+  image_frame->set_data_length(3);
+  image_frame->set_pixel_data("    ");
+  image_frame->set_format(mri::ImageFrame::JPEG);
+}
+
+void ValidateFakeImageFrameData(const media_perception::ImageFrame& if_result) {
+  EXPECT_EQ(*if_result.width, 1);
+  EXPECT_EQ(*if_result.height, 2);
+  EXPECT_EQ(*if_result.data_length, 3);
+  EXPECT_EQ((*if_result.frame).size(), 4ul);
+  EXPECT_EQ(if_result.format, media_perception::IMAGE_FORMAT_JPEG);
+}
+
+// Verifies that the data is converted successfully and as expected in each of
+// these cases.
+
+TEST(ConversionUtilsTest, MediaPerceptionProtoToIdl) {

[tbarzic, 2017/05/17 21:04:41]

rename tests to MediaPerceptionConversionUtilsTest

[Luke Sorenson, 2017/05/17 23:07:49]

Done.

+  mri::MediaPerception media_perception;
+  // Fill in fake values for the media_perception proto.
+  media_perception.set_timestamp(1);
+  mri::FramePerception* frame_perception =
+      media_perception.add_frame_perception();
+  InitializeFakeFramePerception(frame_perception);
+  media_perception::MediaPerception mp_result =

[tbarzic, 2017/05/17 21:04:41]

add a new line after initialization is done

also, rename the variable (mp is not that meaningful)

[Luke Sorenson, 2017/05/17 23:07:48]

Done.

+      MediaPerceptionProtoToIdl(media_perception);
+  EXPECT_EQ(*mp_result.timestamp, 1);
+  const auto& fp_result = (*mp_result.frame_perceptions)[0];

[tbarzic, 2017/05/17 21:04:41]

assert that frame perception is set and its size is 1

Also, just call
VelidateFramePerceptionResult(mp_result.frame_perceptions->at(0));

[Luke Sorenson, 2017/05/17 23:07:48]

Done.

+  ValidateFramePerceptionResult(fp_result);
+}
+
+TEST(ConversionUtilsTest, DiagnosticsProtoToIdl) {
+  const int kNumSamples = 3;
+  mri::Diagnostics diagnostics;
+  for (int i = 0; i < kNumSamples; i++) {
+    mri::PerceptionSample* perception_sample =
+        diagnostics.add_perception_sample();
+    mri::FramePerception* frame_perception =
+        perception_sample->mutable_frame_perception();
+    InitializeFakeFramePerception(frame_perception);
+    mri::ImageFrame* image_frame = perception_sample->mutable_image_frame();
+    InitializeFakeImageFrameData(image_frame);
+  }
+  media_perception::Diagnostics d_result = DiagnosticsProtoToIdl(diagnostics);
+  ASSERT_THAT(*d_result.perception_samples, testing::SizeIs(kNumSamples));

[tbarzic, 2017/05/17 21:04:41]

ASSERT_EQ(kNumSamples, d_result.perception_samples->size());

[Luke Sorenson, 2017/05/17 23:07:48]

For testing the size of stl objects, I think I am supposed to use
testing::SizeIs

[tbarzic, 2017/05/18 19:28:01]

testing::SizeIs is not really common in Chrome - it seems to be used only in
handful of tests.

[Luke Sorenson, 2017/05/18 21:24:16]

Done.

+  for (int i = 0; i < kNumSamples; i++) {
+    const auto& ps_result = (*d_result.perception_samples)[i];
+    const auto& fp_result = (*ps_result.frame_perception);
+    const auto& if_result = (*ps_result.image_frame);
+    ValidateFramePerceptionResult(fp_result);
+    ValidateFakeImageFrameData(if_result);
+  }
+}
+
+TEST(ConversionUtilsTest, StateProtoToIdl) {
+  mri::State state;
+  state.set_status(mri::State::RUNNING);
+  media_perception::State s_result = StateProtoToIdl(state);
+  EXPECT_EQ(s_result.status, media_perception::STATUS_RUNNING);
+
+  state.set_status(mri::State::STARTED);
+  state.set_device_context(kTestDeviceContext);
+  s_result = StateProtoToIdl(state);
+  EXPECT_EQ(s_result.status, media_perception::STATUS_STARTED);
+  EXPECT_EQ(*s_result.device_context, kTestDeviceContext);
+}
+
+TEST(ConversionUtilsTest, StateIdlToProto) {
+  media_perception::State state;
+  state.status = media_perception::STATUS_UNINITIALIZED;
+  mri::State s_proto = StateIdlToProto(state);
+  EXPECT_EQ(s_proto.status(), mri::State::UNINITIALIZED);
+  EXPECT_FALSE(s_proto.has_device_context());
+
+  state.status = media_perception::STATUS_SUSPENDED;
+  state.device_context.reset(new std::string(kTestDeviceContext));
+  s_proto = StateIdlToProto(state);
+  EXPECT_EQ(s_proto.status(), mri::State::SUSPENDED);
+  EXPECT_EQ(s_proto.device_context(), kTestDeviceContext);
+}
+
+}  // namespace extensions