(2nd try) Add a helper class that keeps per-profile information for FileSystem API

chrome/browser/file_system/file_system_host_context_unittest.cc

Index: chrome/browser/file_system/file_system_host_context_unittest.cc
diff --git a/chrome/browser/file_system/file_system_host_context_unittest.cc b/chrome/browser/file_system/file_system_host_context_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6bcda9db5c4a7101b97f0004be794e5eed019c80
--- /dev/null
+++ b/chrome/browser/file_system/file_system_host_context_unittest.cc
@@ -0,0 +1,101 @@
+// Copyright (c) 2010 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 "base/basictypes.h"
+#include "base/file_path.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/file_system/file_system_host_context.h"
+#include "chrome/browser/file_system/file_system_host_context.h"
+#include "googleurl/src/gurl.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/WebKit/chromium/public/WebFileSystem.h"
+
+namespace {
+
+// PS stands for path separator.
+#if defined(FILE_PATH_USES_WIN_SEPARATORS)
+#define PS  "\\"
+#else
+#define PS  "/"
+#endif
+
+const FilePath::CharType kTestDataPath[] = FILE_PATH_LITERAL(
+        "//tmp/TestingProfilePath");
+
+const struct RootPathTest {
+  WebKit::WebFileSystem::Type type;
+  bool off_the_record;
+  const char* origin_url;
+  bool expect_root_path;
+  const char* expected_path;
+} kRootPathTestCases[] = {
+  { WebKit::WebFileSystem::TypeTemporary, false, "http://host:1/",
+    true, "FileSystem" PS "http_host_1" PS "Temporary" },
+  { WebKit::WebFileSystem::TypePersistent,  false, "http://host:2/",
+    true, "FileSystem" PS "http_host_2" PS "Persistent" },
+  { WebKit::WebFileSystem::TypeTemporary, true,  "http://host:3/",
+    false, "" },
+  { WebKit::WebFileSystem::TypePersistent,  true,  "http://host:4/",
+    false, "" },
+};
+
+const struct CheckValidPathTest {
+  FilePath::StringType path;
+  bool expected_valid;
+} kCheckValidPathTestCases[] = {
+  { FILE_PATH_LITERAL("//tmp/foo.txt"), false, },
+  { FILE_PATH_LITERAL("//etc/hosts"), false, },
+  { FILE_PATH_LITERAL("foo.txt"), true, },
+  { FILE_PATH_LITERAL("a/b/c"), true, },
+  // Any paths that includes parent references are considered invalid.
+  { FILE_PATH_LITERAL(".."), false, },
+  { FILE_PATH_LITERAL("tmp/.."), false, },
+  { FILE_PATH_LITERAL("a/b/../c/.."), false, },
+};
+
+}  // namespace
+
+TEST(FileSystemHostContextTest, GetRootPath) {
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kRootPathTestCases); ++i) {
+    SCOPED_TRACE(testing::Message() << "RootPath #" << i << " "
+                 << kRootPathTestCases[i].expected_path);
+
+    scoped_refptr<FileSystemHostContext> context(
+        new FileSystemHostContext(FilePath(kTestDataPath),
+                                  kRootPathTestCases[i].off_the_record));
+
+    FilePath root_path;
+    bool result = context->GetFileSystemRootPath(
+            GURL(kRootPathTestCases[i].origin_url),
+            kRootPathTestCases[i].type,
+            &root_path, NULL);
+    EXPECT_EQ(kRootPathTestCases[i].expect_root_path, result);
+    if (result) {
+      FilePath expected = FilePath(kTestDataPath).AppendASCII(
+          kRootPathTestCases[i].expected_path);
+      EXPECT_EQ(expected.value(), root_path.value());
+    }
+  }
+}
+
+TEST(FileSystemHostContextTest, CheckValidPath) {
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kCheckValidPathTestCases); ++i) {
+    SCOPED_TRACE(testing::Message() << "CheckValidPath #" << i << " "
+                 << kCheckValidPathTestCases[i].path);
+
+    scoped_refptr<FileSystemHostContext> context(
+        new FileSystemHostContext(FilePath(kTestDataPath), false));
+
+    FilePath root_path;
+    EXPECT_TRUE(context->GetFileSystemRootPath(
+        GURL("http://foo.com/"), WebKit::WebFileSystem::TypePersistent,
+        &root_path, NULL));
+    FilePath path(kCheckValidPathTestCases[i].path);
+    if (!path.IsAbsolute())
+      path = root_path.Append(path);
+
+    EXPECT_EQ(kCheckValidPathTestCases[i].expected_valid,
+              context->CheckValidFileSystemPath(path));
+  }
+}