[SafeBrowsing] Consolidate extension lookup logic and extension lists.

chrome/common/safe_browsing/download_protection_util_unittest.cc

+// Copyright 2015 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/download_protection_util.h"
+
+#include "base/files/file_path.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace safe_browsing {
+namespace download_protection_util {
+
+TEST(DownloadProtectionUtilTest, KnownValues) {
+  EXPECT_EQ(0, GetSBClientDownloadExtensionValueForUMA(
+                   base::FilePath(FILE_PATH_LITERAL("foo.exe"))));
+  EXPECT_EQ(9, GetSBClientDownloadExtensionValueForUMA(
+                   base::FilePath(FILE_PATH_LITERAL("foo.dll"))));
+  EXPECT_EQ(29, GetSBClientDownloadExtensionValueForUMA(
+                    base::FilePath(FILE_PATH_LITERAL("foo.jse"))));
+  EXPECT_EQ(18, GetSBClientDownloadExtensionValueForUMA(
+                    base::FilePath(FILE_PATH_LITERAL("foo.111"))));
+  EXPECT_EQ(18, GetSBClientDownloadExtensionValueForUMA(
+                    base::FilePath(FILE_PATH_LITERAL("foo.zzz"))));
+  EXPECT_TRUE(IsArchiveFile(base::FilePath(FILE_PATH_LITERAL("foo.zip"))));
+  EXPECT_FALSE(IsArchiveFile(base::FilePath(FILE_PATH_LITERAL("foo.ps1"))));
+  EXPECT_FALSE(
+      IsArchiveFile(base::FilePath(FILE_PATH_LITERAL("foo.unknownextension"))));
+  EXPECT_FALSE(
+      IsArchiveFile(base::FilePath(FILE_PATH_LITERAL("no_extension"))));
+  EXPECT_TRUE(IsSupportedBinaryFile(base::FilePath(FILE_PATH_LITERAL(".exe"))));
+  EXPECT_TRUE(
+      IsSupportedBinaryFile(base::FilePath(FILE_PATH_LITERAL("foo.msi"))));
+  EXPECT_FALSE(
+      IsSupportedBinaryFile(base::FilePath(FILE_PATH_LITERAL("foo.txt"))));
+  EXPECT_FALSE(IsSupportedBinaryFile(
+      base::FilePath(FILE_PATH_LITERAL("foo.unknownextension"))));
+  EXPECT_FALSE(
+      IsSupportedBinaryFile(base::FilePath(FILE_PATH_LITERAL("no_extension"))));
+}
+
+} // namespace download_protection_util
+} // namespace safe_browsing
+
+