cros: Added a fake fingerprint storage class.

chromeos/dbus/biod/test_utils.h

Index: chromeos/dbus/biod/test_utils.h
diff --git a/chromeos/dbus/biod/test_utils.h b/chromeos/dbus/biod/test_utils.h
new file mode 100644
index 0000000000000000000000000000000000000000..2225e92c9029d1aa5d67ac309ffe395631077577
--- /dev/null
+++ b/chromeos/dbus/biod/test_utils.h
@@ -0,0 +1,92 @@
+// 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.
+
+#ifndef CHROMEOS_DBUS_BIOD_TEST_UTILS_H_
+#define CHROMEOS_DBUS_BIOD_TEST_UTILS_H_
+
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "chromeos/dbus/biod/biod_client.h"
+
+namespace dbus {
+class ObjectPath;
+}
+
+namespace chromeos {
+namespace test_utils {
+
+// Copies |src_path| to |dest_path|.
+void CopyObjectPath(dbus::ObjectPath* dest_path,
+                    const dbus::ObjectPath& src_path);
+
+// Copies |src_object_paths| to |dst_object_paths|.
+void CopyObjectPathArray(std::vector<dbus::ObjectPath>* dest_object_paths,
+                         const std::vector<dbus::ObjectPath>& src_object_paths);
+
+// Copies |src_str| to |dest_str|.
+void CopyString(std::string* dest_str, const std::string& src_str);
+
+// Copies |src_status| to |dest_status|.
+void CopyDBusMethodCallStatus(DBusMethodCallStatus* dest_status,
+                              DBusMethodCallStatus src_status);
+
+// Copies |src_type| to |dest_type|.
+void CopyBiometricType(biod::BiometricType* dest_type,
+                       biod::BiometricType src_type);
+
+// Implementation of BiodClient::Observer for testing.
+class TestBiodObserver : public BiodClient::Observer {
+ public:
+  TestBiodObserver();
+  ~TestBiodObserver() override;
+
+  int num_complete_enroll_scans_received() const {
+    return num_complete_enroll_scans_received_;
+  }
+  int num_incomplete_enroll_scans_received() const {
+    return num_incomplete_enroll_scans_received_;
+  }
+  int num_matched_auth_scans_received() const {
+    return num_matched_auth_scans_received_;
+  }
+  int num_unmatched_auth_scans_received() const {
+    return num_unmatched_auth_scans_received_;
+  }
+  int num_failures_received() const { return num_failures_received_; }
+  AuthScanMatches last_auth_scan_matches() const {

[Daniel Erat, 2017/04/11 18:45:21]

can this return a const ref instead of a copy?

[sammiequon, 2017/04/11 18:55:19]

Done.

+    return last_auth_scan_matches_;
+  }
+
+  int NumEnrollScansReceived() const;
+  int NumAuthScansReceived() const;
+
+  void ResetAllCounts();
+
+  // BiodClient::Observer:
+  void BiodServiceRestarted() override;
+  void BiodEnrollScanDoneReceived(biod::ScanResult scan_result,
+                                  bool is_complete) override;
+  void BiodAuthScanDoneReceived(biod::ScanResult scan_result,
+                                const AuthScanMatches& matches) override;
+  void BiodSessionFailedReceived() override;
+
+ private:
+  int num_complete_enroll_scans_received_ = 0;
+  int num_incomplete_enroll_scans_received_ = 0;
+  int num_matched_auth_scans_received_ = 0;
+  int num_unmatched_auth_scans_received_ = 0;
+  int num_failures_received_ = 0;
+
+  // When auth scan is received, store the result.
+  AuthScanMatches last_auth_scan_matches_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestBiodObserver);
+};
+
+}  // namespace test_utils
+}  // chromeos
+
+#endif  // CHROMEOS_DBUS_BIOD_TEST_UTILS_H_