// Copyright (c) 2012 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 "webkit/fileapi/file_system_util.h"

#include "base/files/file_path.h"
#include "googleurl/src/gurl.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "webkit/fileapi/file_system_url.h"

namespace fileapi {
namespace {

class FileSystemUtilTest : public testing::Test {};

TEST_F(FileSystemUtilTest, GetTempFileSystemRootURI) {
  GURL origin_url("http://chromium.org");
  fileapi::FileSystemType type = fileapi::kFileSystemTypeTemporary;
  GURL uri = GURL("filesystem:http://chromium.org/temporary/");
  EXPECT_EQ(uri, GetFileSystemRootURI(origin_url, type));
}

TEST_F(FileSystemUtilTest, GetPersistentFileSystemRootURI) {
  GURL origin_url("http://chromium.org");
  fileapi::FileSystemType type = fileapi::kFileSystemTypePersistent;
  GURL uri = GURL("filesystem:http://chromium.org/persistent/");
  EXPECT_EQ(uri, GetFileSystemRootURI(origin_url, type));
}

TEST_F(FileSystemUtilTest, VirtualPathBaseName) {
  struct test_data {
    const base::FilePath::StringType path;
    const base::FilePath::StringType base_name;
  } test_cases[] = {
    { FILE_PATH_LITERAL("foo/bar"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("foo/b:bar"), FILE_PATH_LITERAL("b:bar") },
    { FILE_PATH_LITERAL(""), FILE_PATH_LITERAL("") },
    { FILE_PATH_LITERAL("/"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("foo//////bar"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("foo/bar/"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("foo/bar/////"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("/bar/////"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("bar/////"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("bar/"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("/bar"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("////bar"), FILE_PATH_LITERAL("bar") },
    { FILE_PATH_LITERAL("bar"), FILE_PATH_LITERAL("bar") }
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    base::FilePath input = base::FilePath(test_cases[i].path);
    base::FilePath base_name = VirtualPath::BaseName(input);
    EXPECT_EQ(test_cases[i].base_name, base_name.value());
  }
}

TEST_F(FileSystemUtilTest, VirtualPathDirName) {
  struct test_data {
    const base::FilePath::StringType path;
    const base::FilePath::StringType dir_name;
  } test_cases[] = {
    { FILE_PATH_LITERAL("foo/bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo/b:bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL(""), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("/"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("foo//////bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo/bar/"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo/bar/////"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("/bar/////"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("bar/////"), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("bar/"), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("/bar"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("////bar"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("bar"), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("c:bar"), FILE_PATH_LITERAL(".") },
#ifdef FILE_PATH_USES_WIN_SEPARATORS
    { FILE_PATH_LITERAL("foo\\bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo\\b:bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("\\"), FILE_PATH_LITERAL("\\") },
    { FILE_PATH_LITERAL("foo\\\\\\\\\\\\bar"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo\\bar\\"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("foo\\bar\\\\\\\\\\"), FILE_PATH_LITERAL("foo") },
    { FILE_PATH_LITERAL("\\bar\\\\\\\\\\"), FILE_PATH_LITERAL("\\") },
    { FILE_PATH_LITERAL("bar\\\\\\\\\\"), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("bar\\"), FILE_PATH_LITERAL(".") },
    { FILE_PATH_LITERAL("\\bar"), FILE_PATH_LITERAL("\\") },
    { FILE_PATH_LITERAL("\\\\\\\\bar"), FILE_PATH_LITERAL("\\") },
#endif
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    base::FilePath input = base::FilePath(test_cases[i].path);
    base::FilePath dir_name = VirtualPath::DirName(input);
    EXPECT_EQ(test_cases[i].dir_name, dir_name.value());
  }
}

TEST_F(FileSystemUtilTest, GetNormalizedFilePath) {
  struct test_data {
    const base::FilePath::StringType path;
    const base::FilePath::StringType normalized_path;
  } test_cases[] = {
    { FILE_PATH_LITERAL(""), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("/"), FILE_PATH_LITERAL("/") },
    { FILE_PATH_LITERAL("foo/bar"), FILE_PATH_LITERAL("/foo/bar") },
    { FILE_PATH_LITERAL("/foo/bar"), FILE_PATH_LITERAL("/foo/bar") }
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    base::FilePath input = base::FilePath(test_cases[i].path);
    base::FilePath::StringType normalized_path_string =
        VirtualPath::GetNormalizedFilePath(input);
    EXPECT_EQ(test_cases[i].normalized_path, normalized_path_string);
  }
}

TEST_F(FileSystemUtilTest, IsAbsolutePath) {
  EXPECT_TRUE(VirtualPath::IsAbsolute(FILE_PATH_LITERAL("/")));
  EXPECT_TRUE(VirtualPath::IsAbsolute(FILE_PATH_LITERAL("/foo/bar")));
  EXPECT_FALSE(VirtualPath::IsAbsolute(FILE_PATH_LITERAL("")));
  EXPECT_FALSE(VirtualPath::IsAbsolute(FILE_PATH_LITERAL("foo/bar")));
}

TEST_F(FileSystemUtilTest, VirtualPathGetComponents) {
  struct test_data {
    const base::FilePath::StringType path;
    size_t count;
    const base::FilePath::StringType components[3];
  } test_cases[] = {
    { FILE_PATH_LITERAL("foo/bar"),
      2,
      { FILE_PATH_LITERAL("foo"), FILE_PATH_LITERAL("bar") } },
    { FILE_PATH_LITERAL("foo"),
      1,
      { FILE_PATH_LITERAL("foo") } },
    { FILE_PATH_LITERAL("foo////bar"),
      2,
      { FILE_PATH_LITERAL("foo"), FILE_PATH_LITERAL("bar") } },
    { FILE_PATH_LITERAL("foo/c:bar"),
      2,
      { FILE_PATH_LITERAL("foo"), FILE_PATH_LITERAL("c:bar") } },
    { FILE_PATH_LITERAL("c:foo/bar"),
      2,
      { FILE_PATH_LITERAL("c:foo"), FILE_PATH_LITERAL("bar") } },
    { FILE_PATH_LITERAL("foo/bar"),
      2,
      { FILE_PATH_LITERAL("foo"), FILE_PATH_LITERAL("bar") } },
    { FILE_PATH_LITERAL("/foo/bar"),
      2,
      { FILE_PATH_LITERAL("foo"), FILE_PATH_LITERAL("bar") } },
    { FILE_PATH_LITERAL("c:/bar"),
      2,
      { FILE_PATH_LITERAL("c:"), FILE_PATH_LITERAL("bar") } },
#ifdef FILE_PATH_USES_WIN_SEPARATORS
    { FILE_PATH_LITERAL("c:\\bar"),
      2,
      { FILE_PATH_LITERAL("c:"), FILE_PATH_LITERAL("bar") } },
#endif
  };
  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(test_cases); ++i) {
    base::FilePath input = base::FilePath(test_cases[i].path);
    std::vector<base::FilePath::StringType> components;
    VirtualPath::GetComponents(input, &components);
    EXPECT_EQ(test_cases[i].count, components.size());
    for (size_t j = 0; j < components.size(); ++j)
      EXPECT_EQ(test_cases[i].components[j], components[j]);
  }
}

TEST_F(FileSystemUtilTest, GetIsolatedFileSystemName) {
  GURL origin_url("http://foo");
  std::string fsname1 = GetIsolatedFileSystemName(origin_url, "bar");
  EXPECT_EQ("http_foo_0:Isolated_bar", fsname1);
}

TEST_F(FileSystemUtilTest, CrackIsolatedFileSystemName) {
  std::string fsid;
  EXPECT_TRUE(CrackIsolatedFileSystemName("foo:Isolated_bar", &fsid));
  EXPECT_EQ("bar", fsid);
  EXPECT_TRUE(CrackIsolatedFileSystemName("foo:isolated_bar", &fsid));
  EXPECT_EQ("bar", fsid);
  EXPECT_TRUE(CrackIsolatedFileSystemName("foo:Isolated__bar", &fsid));
  EXPECT_EQ("_bar", fsid);
  EXPECT_TRUE(CrackIsolatedFileSystemName("foo::Isolated_bar", &fsid));
  EXPECT_EQ("bar", fsid);
}

TEST_F(FileSystemUtilTest, RejectBadIsolatedFileSystemName) {
  std::string fsid;
  EXPECT_FALSE(CrackIsolatedFileSystemName("foobar", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:_bar", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:Isolatedbar", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("fooIsolatedbar", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:Persistent", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:Temporary", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:External", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName(":Isolated_bar", &fsid));
  EXPECT_FALSE(CrackIsolatedFileSystemName("foo:Isolated_", &fsid));
}

TEST_F(FileSystemUtilTest, AreSameFileSystem) {
  FileSystemURL url_foo_temp_a = FileSystemURL::CreateForTest(
      GURL("http://foo"), kFileSystemTypeTemporary,
      base::FilePath::FromUTF8Unsafe("a"));
  FileSystemURL url_foo_temp_b = FileSystemURL::CreateForTest(
      GURL("http://foo"), kFileSystemTypeTemporary,
      base::FilePath::FromUTF8Unsafe("b"));
  FileSystemURL url_foo_perm_a = FileSystemURL::CreateForTest(
      GURL("http://foo"), kFileSystemTypePersistent,
      base::FilePath::FromUTF8Unsafe("a"));
  FileSystemURL url_bar_temp_a = FileSystemURL::CreateForTest(
      GURL("http://bar"), kFileSystemTypeTemporary,
      base::FilePath::FromUTF8Unsafe("a"));
  FileSystemURL url_bar_perm_a = FileSystemURL::CreateForTest(
      GURL("http://bar"), kFileSystemTypePersistent,
      base::FilePath::FromUTF8Unsafe("a"));

  EXPECT_TRUE(AreSameFileSystem(url_foo_temp_a, url_foo_temp_a));
  EXPECT_TRUE(AreSameFileSystem(url_foo_temp_a, url_foo_temp_b));
  EXPECT_FALSE(AreSameFileSystem(url_foo_temp_a, url_foo_perm_a));
  EXPECT_FALSE(AreSameFileSystem(url_foo_temp_a, url_bar_temp_a));
  EXPECT_FALSE(AreSameFileSystem(url_foo_temp_a, url_bar_perm_a));
}

}  // namespace (anonymous)
}  // namespace fileapi