Host fingerprint mojo service within the device service.

services/device/fingerprint/fingerprint_impl_chromeos_unittest.cc

+// Copyright 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 "services/device/fingerprint/fingerprint_impl_chromeos.h"
+
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace device {
+
+class FakeFingerprintObserver : public mojom::FingerprintObserver {
+ public:
+  explicit FakeFingerprintObserver(mojom::FingerprintObserverRequest request)
+      : binding_(this, std::move(request)) {}
+  ~FakeFingerprintObserver() override {}
+
+  // mojom::FingerprintObserver
+  void OnRestarted() override { restarts_++; }
+
+  void OnScanned(uint32_t scan_result, bool is_complete) override { scans_++; }
+
+  void OnAttempt(uint32_t scan_result,
+                 const std::vector<std::string>& recognized_user_ids) override {
+    attempts_++;
+  }
+
+  void OnFailure() override { failures_++; }
+
+  // Test status counts.
+  int Scans() { return scans_; }
+  int Attempts() { return attempts_; }
+  int Restarts() { return restarts_; }
+  int Failures() { return failures_; }
+
+ private:
+  mojo::Binding<mojom::FingerprintObserver> binding_;
+  int scans_ = 0;     // Count of scan signal received.
+  int attempts_ = 0;  // Count of attempt signal received.
+  int restarts_ = 0;  // Count of restart signal received.
+  int failures_ = 0;  // Count of failure signal received.
+
+  DISALLOW_COPY_AND_ASSIGN(FakeFingerprintObserver);
+};
+
+class FingerprintImplChromeOSTest : public testing::Test {
+ public:
+  FingerprintImplChromeOSTest() {
+    fingerprint_ = base::WrapUnique(new FingerprintImplChromeOS());
+  }
+  ~FingerprintImplChromeOSTest() override {}
+
+  FingerprintImplChromeOS* fingerprint() { return fingerprint_.get(); }
+
+  void GenerateRestartSignal() { fingerprint_->BiodBiometricClientRestarted(); }
+
+  void GenerateScanSignal() {
+    fingerprint_->BiometricsScanEventReceived(0, true);
+  }
+
+  void GenerateAttemptSignal() {
+    std::vector<std::string> user_list;
+    fingerprint_->BiometricsAttemptEventReceived(0, user_list);
+  }
+
+  void GenerateFailureSignal() { fingerprint_->BiometricsFailureReceived(); }
+
+ private:
+  base::MessageLoop message_loop_;
+  std::unique_ptr<FingerprintImplChromeOS> fingerprint_;
+
+  DISALLOW_COPY_AND_ASSIGN(FingerprintImplChromeOSTest);
+};
+
+TEST_F(FingerprintImplChromeOSTest, FingerprintObserverTest) {
+  mojom::FingerprintObserverPtr proxy1;
+  FakeFingerprintObserver observer1(mojo::MakeRequest(&proxy1));
+  mojom::FingerprintObserverPtr proxy2;
+  FakeFingerprintObserver observer2(mojo::MakeRequest(&proxy2));
+
+  fingerprint()->AddFingerprintObserver(std::move(proxy1));
+  fingerprint()->AddFingerprintObserver(std::move(proxy2));
+
+  GenerateRestartSignal();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(observer1.Restarts(), 1);
+  EXPECT_EQ(observer2.Restarts(), 1);
+
+  GenerateScanSignal();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(observer1.Scans(), 1);
+  EXPECT_EQ(observer2.Scans(), 1);
+
+  GenerateAttemptSignal();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(observer1.Attempts(), 1);
+  EXPECT_EQ(observer2.Attempts(), 1);
+
+  GenerateFailureSignal();
+  base::RunLoop().RunUntilIdle();
+  EXPECT_EQ(observer1.Failures(), 1);
+  EXPECT_EQ(observer2.Failures(), 1);
+}
+
+}  // namespace device