[CrOS Tether]: Add LocalDeviceDataProvider, which fetches device data for the local device.

chromeos/components/tether/local_device_data_provider_unittest.cc

Index: chromeos/components/tether/local_device_data_provider_unittest.cc
diff --git a/chromeos/components/tether/local_device_data_provider_unittest.cc b/chromeos/components/tether/local_device_data_provider_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..461fbe58645700d0fe6ec8e81eb856cbd50d10e9
--- /dev/null
+++ b/chromeos/components/tether/local_device_data_provider_unittest.cc
@@ -0,0 +1,204 @@
+// 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 "chromeos/components/tether/local_device_data_provider.h"
+
+#include <string>
+#include <vector>
+
+#include "base/logging.h"
+#include "components/cryptauth/cryptauth_device_manager.h"
+#include "components/cryptauth/cryptauth_enrollment_manager.h"
+#include "components/cryptauth/proto/cryptauth_api.pb.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::NiceMock;
+using testing::Return;
+
+namespace chromeos {
+
+namespace tether {
+
+namespace {
+const std::string kDefaultPublicKey = "publicKey";
+
+const std::string kBeaconSeed1Data = "beaconSeed1Data";
+const int64_t kBeaconSeed1StartMs = 1000L;
+const int64_t kBeaconSeed1EndMs = 2000L;
+
+const std::string kBeaconSeed2Data = "beaconSeed2Data";
+const int64_t kBeaconSeed2StartMs = 2000L;
+const int64_t kBeaconSeed2EndMs = 3000L;
+
+cryptauth::BeaconSeed CreateBeaconSeed(const std::string& data,
+                                       int64_t start_ms,
+                                       int64_t end_ms) {
+  cryptauth::BeaconSeed seed;
+  seed.set_data(data);
+  seed.set_start_time_millis(start_ms);
+  seed.set_end_time_millis(end_ms);
+  return seed;
+}
+}  // namespace
+
+class LocalDeviceDataProviderTest : public testing::Test {
+ protected:
+  class MockProviderContext
+      : public LocalDeviceDataProvider::LocalDeviceDataProviderContext {
+   public:
+    MockProviderContext() {}
+    ~MockProviderContext() override {}
+
+    MOCK_CONST_METHOD0(GetUserPublicKey, std::string());
+    MOCK_CONST_METHOD0(GetSyncedDevices,
+                       std::vector<cryptauth::ExternalDeviceInfo>());
+  };
+
+  LocalDeviceDataProviderTest() {
+    fake_beacon_seeds_.push_back(CreateBeaconSeed(
+        kBeaconSeed1Data, kBeaconSeed1StartMs, kBeaconSeed1EndMs));
+    fake_beacon_seeds_.push_back(CreateBeaconSeed(
+        kBeaconSeed2Data, kBeaconSeed2StartMs, kBeaconSeed2EndMs));
+
+    // Has no public key and no BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device1;
+    fake_synced_devices_.push_back(synced_device1);
+
+    // Has no public key and some BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device2;
+    synced_device2.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed1Data, kBeaconSeed1StartMs, kBeaconSeed1EndMs));
+    synced_device2.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed2Data, kBeaconSeed2StartMs, kBeaconSeed2EndMs));
+    fake_synced_devices_.push_back(synced_device2);
+
+    // Has another different public key and no BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device3;
+    synced_device3.set_public_key("anotherPublicKey");
+    fake_synced_devices_.push_back(synced_device3);
+
+    // Has different public key and BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device4;
+    synced_device4.set_public_key("otherPublicKey");
+    synced_device4.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed1Data, kBeaconSeed1StartMs, kBeaconSeed1EndMs));
+    synced_device4.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed2Data, kBeaconSeed2StartMs, kBeaconSeed2EndMs));
+    fake_synced_devices_.push_back(synced_device4);
+
+    // Has public key but no BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device5;
+    synced_device5.set_public_key(kDefaultPublicKey);
+    fake_synced_devices_.push_back(synced_device5);
+
+    // Has public key and BeaconSeeds.
+    cryptauth::ExternalDeviceInfo synced_device6;
+    synced_device6.set_public_key(kDefaultPublicKey);
+    synced_device6.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed1Data, kBeaconSeed1StartMs, kBeaconSeed1EndMs));
+    synced_device6.add_beacon_seeds()->CopyFrom(CreateBeaconSeed(
+        kBeaconSeed2Data, kBeaconSeed2StartMs, kBeaconSeed2EndMs));
+    fake_synced_devices_.push_back(synced_device6);
+  }
+
+  void SetUp() override {
+    mock_context_ = new NiceMock<MockProviderContext>();
+
+    provider_ = base::WrapUnique(
+        new LocalDeviceDataProvider(base::WrapUnique(mock_context_)));
+  }
+
+  std::unique_ptr<LocalDeviceDataProvider> provider_;
+  NiceMock<MockProviderContext>* mock_context_;
+
+  std::vector<cryptauth::BeaconSeed> fake_beacon_seeds_;
+  std::vector<cryptauth::ExternalDeviceInfo> fake_synced_devices_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LocalDeviceDataProviderTest);
+};
+
+TEST_F(LocalDeviceDataProviderTest, TestGetLocalDeviceData_NoPublicKey) {
+  ON_CALL(*mock_context_, GetUserPublicKey())
+      .WillByDefault(Return(std::string()));
+  ON_CALL(*mock_context_, GetSyncedDevices())
+      .WillByDefault(Return(fake_synced_devices_));

[Ryan Hansberry, 2016/12/19 20:25:31]

nit: make these stub calls a single helper method.

[Kyle Horimoto, 2016/12/19 21:23:55]

I'd like to keep them as-is to make the mocks as explicit as possible in each
case.

+
+  std::string public_key;
+  std::vector<cryptauth::BeaconSeed> beacon_seeds;
+
+  EXPECT_FALSE(provider_->GetLocalDeviceData(&public_key, &beacon_seeds));
+}
+
+TEST_F(LocalDeviceDataProviderTest, TestGetLocalDeviceData_NoSyncedDevices) {
+  ON_CALL(*mock_context_, GetUserPublicKey())
+      .WillByDefault(Return(kDefaultPublicKey));
+  ON_CALL(*mock_context_, GetSyncedDevices())
+      .WillByDefault(Return(std::vector<cryptauth::ExternalDeviceInfo>()));
+
+  std::string public_key;
+  std::vector<cryptauth::BeaconSeed> beacon_seeds;
+
+  EXPECT_FALSE(provider_->GetLocalDeviceData(&public_key, &beacon_seeds));
+}
+
+TEST_F(LocalDeviceDataProviderTest,
+       TestGetLocalDeviceData_NoSyncedDeviceMatchingPublicKey) {
+  ON_CALL(*mock_context_, GetUserPublicKey())
+      .WillByDefault(Return(kDefaultPublicKey));
+  ON_CALL(*mock_context_, GetSyncedDevices())
+      .WillByDefault(Return(std::vector<cryptauth::ExternalDeviceInfo>{
+          fake_synced_devices_[0], fake_synced_devices_[1],
+          fake_synced_devices_[2], fake_synced_devices_[3]}));
+
+  std::string public_key;
+  std::vector<cryptauth::BeaconSeed> beacon_seeds;
+
+  EXPECT_FALSE(provider_->GetLocalDeviceData(&public_key, &beacon_seeds));
+}
+
+TEST_F(LocalDeviceDataProviderTest,
+       TestGetLocalDeviceData_SyncedDeviceIncludesPublicKeyButNoBeaconSeeds) {
+  ON_CALL(*mock_context_, GetUserPublicKey())
+      .WillByDefault(Return(kDefaultPublicKey));
+  ON_CALL(*mock_context_, GetSyncedDevices())
+      .WillByDefault(Return(std::vector<cryptauth::ExternalDeviceInfo>{
+          fake_synced_devices_[4],
+      }));
+
+  std::string public_key;
+  std::vector<cryptauth::BeaconSeed> beacon_seeds;
+
+  EXPECT_FALSE(provider_->GetLocalDeviceData(&public_key, &beacon_seeds));
+}
+
+TEST_F(LocalDeviceDataProviderTest, TestGetLocalDeviceData_Success) {
+  ON_CALL(*mock_context_, GetUserPublicKey())
+      .WillByDefault(Return(kDefaultPublicKey));
+  ON_CALL(*mock_context_, GetSyncedDevices())
+      .WillByDefault(Return(fake_synced_devices_));
+
+  std::string public_key;
+  std::vector<cryptauth::BeaconSeed> beacon_seeds;
+
+  EXPECT_TRUE(provider_->GetLocalDeviceData(&public_key, &beacon_seeds));
+
+  EXPECT_EQ(kDefaultPublicKey, public_key);
+
+  ASSERT_EQ(fake_beacon_seeds_.size(), beacon_seeds.size());
+  for (size_t i = 0; i < fake_beacon_seeds_.size(); i++) {
+    // Note: google::protobuf::util::MessageDifferencer can only be used to diff
+    // Message, but BeaconSeed derives from the incompatible MessageLite class.
+    cryptauth::BeaconSeed expected = fake_beacon_seeds_[i];
+    cryptauth::BeaconSeed actual = beacon_seeds[i];
+    EXPECT_EQ(expected.data(), actual.data());
+    EXPECT_EQ(expected.start_time_millis(), actual.start_time_millis());
+    EXPECT_EQ(expected.end_time_millis(), actual.end_time_millis());
+  }
+}
+
+}  // namespace tether
+
+}  // namespace chromeos