// Copyright 2019 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 "extensions/browser/extension_util.h"

#include "base/path_service.h"
#include "extensions/common/extension_builder.h"
#include "extensions/common/extension_paths.h"
#include "extensions/common/extension_set.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace extensions {
namespace {
// Returns a barebones test Extension object with the given name.
static scoped_refptr<const Extension> CreateExtension(const std::string& name) {
  base::FilePath path;
  base::PathService::Get(DIR_TEST_DATA, &path);

  return ExtensionBuilder(name).SetPath(path.AppendASCII(name)).Build();
}
}  // namespace

// Tests that extension URLs are properly mapped to local file paths.
TEST(ExtensionUtilTest, MapUrlToLocalFilePath) {
  scoped_refptr<const Extension> app(CreateExtension("platform_app"));
  ExtensionSet extensions;
  extensions.Insert(app);

  // Non-extension URLs don't map to anything.
  base::FilePath non_extension_path;
  GURL non_extension_url("http://not-an-extension.com/");
  EXPECT_FALSE(util::MapUrlToLocalFilePath(&extensions, non_extension_url,
                                           false, &non_extension_path));
  EXPECT_TRUE(non_extension_path.empty());

  // Valid resources return a valid path.
  base::FilePath valid_path;
  GURL valid_url = app->GetResourceURL("manifest.json");
  EXPECT_TRUE(util::MapUrlToLocalFilePath(
      &extensions, valid_url, true /* use_blocking_api */, &valid_path));
  EXPECT_FALSE(valid_path.empty());

  // A file must exist to be mapped to a path using the blocking API.
  base::FilePath does_not_exist_path;
  GURL does_not_exist_url = app->GetResourceURL("does-not-exist.html");
  EXPECT_FALSE(util::MapUrlToLocalFilePath(&extensions, does_not_exist_url,
                                           true /* use_blocking_api */,
                                           &does_not_exist_path));
  EXPECT_TRUE(does_not_exist_path.empty());

  // A file does not need to exist to be mapped to a path with the non-blocking
  // API. This avoids hitting the disk to see if it exists.
  EXPECT_TRUE(util::MapUrlToLocalFilePath(&extensions, does_not_exist_url,
                                          false /* use_blocking_api */,
                                          &does_not_exist_path));
  EXPECT_FALSE(does_not_exist_path.empty());
}
}  // namespace extensions