FileTypePolicies class to load types from proto.

chrome/common/safe_browsing/file_type_policies_unittest.cc

+// 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 "chrome/common/safe_browsing/file_type_policies.h"
+
+#include <string.h>
+
+#include <memory>
+
+#include "base/files/file_path.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::NiceMock;
+
+namespace safe_browsing {
+
+class MockFileTypePolicies : public FileTypePolicies {
+ public:
+  MockFileTypePolicies() {}
+  virtual ~MockFileTypePolicies() {}
+
+  MOCK_METHOD2(RecordUpdateMetrics, void(UpdateResult, const std::string&));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockFileTypePolicies);
+};
+
+class FileTypePoliciesTest : public testing::Test {
+ protected:
+  FileTypePoliciesTest() {}
+  ~FileTypePoliciesTest() {}
+
+ protected:
+  NiceMock<MockFileTypePolicies> policies_;
+};
+
+TEST_F(FileTypePoliciesTest, UnpackResourceBundle) {
+  EXPECT_CALL(policies_,
+              RecordUpdateMetrics(FileTypePolicies::UpdateResult::SUCCESS,
+                                  "ResourceBundle"));
+  policies_.PopulateFromResourceBundle();
+
+  // Look up a well known type to ensure it's present.
+  base::FilePath exe_file(FILE_PATH_LITERAL("a/foo.exe"));
+  DownloadFileType file_type = policies_.PolicyForFile(exe_file);
+  EXPECT_EQ("exe", file_type.extension());
+  EXPECT_EQ(0l, file_type.uma_value());
+  EXPECT_EQ(false, file_type.is_archive());
+  EXPECT_EQ(DownloadFileType::ALLOW_ON_USER_GESTURE,
+            file_type.platform_settings(0).danger_level());
+  EXPECT_EQ(DownloadFileType::DISALLOW_AUTO_OPEN,
+            file_type.platform_settings(0).auto_open_hint());
+  EXPECT_EQ(DownloadFileType::FULL_PING,
+            file_type.platform_settings(0).ping_setting());
+
+  // Check other accessors
+  EXPECT_EQ(0l, policies_.UmaValueForFile(exe_file));
+  EXPECT_EQ(false, policies_.IsFileAnArchive(exe_file));
+
+  // Verify settings on default type.
+  file_type = policies_.PolicyForFile(
+      base::FilePath(FILE_PATH_LITERAL("a/foo.fooobar")));
+  EXPECT_EQ("", file_type.extension());
+  EXPECT_EQ(18l, file_type.uma_value());
+  EXPECT_EQ(false, file_type.is_archive());
+  EXPECT_EQ(DownloadFileType::ALLOW_ON_USER_GESTURE,
+            file_type.platform_settings(0).danger_level());
+  EXPECT_EQ(DownloadFileType::DISALLOW_AUTO_OPEN,
+            file_type.platform_settings(0).auto_open_hint());
+  EXPECT_EQ(DownloadFileType::SAMPLED_PING,
+            file_type.platform_settings(0).ping_setting());
+}
+
+TEST_F(FileTypePoliciesTest, BadProto) {
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_EMPTY,
+            policies_.PopulateFromBinaryPb(std::string()));
+
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_PROTO_PARSE,
+            policies_.PopulateFromBinaryPb("foobar"));
+
+  DownloadFileTypeConfig cfg;
+  cfg.set_sampled_ping_probability(0.1f);
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_DEFAULT_SETTING_SET,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+
+  cfg.mutable_default_file_type()->add_platform_settings();
+  auto file_type = cfg.add_file_types();  // This is missing a platform_setting.
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_WRONG_SETTINGS_COUNT,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+
+  file_type->add_platform_settings();
+  EXPECT_EQ(FileTypePolicies::UpdateResult::SUCCESS,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+}
+
+TEST_F(FileTypePoliciesTest, BadUpdateFromExisting) {
+  // Make a minimum viable config
+  DownloadFileTypeConfig cfg;
+  cfg.mutable_default_file_type()->add_platform_settings();
+  cfg.add_file_types()->add_platform_settings();
+  cfg.set_version_id(2);
+  EXPECT_EQ(FileTypePolicies::UpdateResult::SUCCESS,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+
+  // Can't update to the same version
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_VERSION_CHECK,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+
+  // Can't go backward
+  cfg.set_version_id(1);
+  EXPECT_EQ(FileTypePolicies::UpdateResult::FAILED_VERSION_CHECK,
+            policies_.PopulateFromBinaryPb(cfg.SerializeAsString()));
+}
+}  // namespace safe_browsing