Converts resource_provider apptests to unit tests

components/resource_provider/resource_provider_apptest.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 <stddef.h>
-#include <stdint.h>
-
-#include "base/containers/scoped_ptr_hash_map.h"
-#include "base/files/file.h"
-#include "base/macros.h"
-#include "base/run_loop.h"
-#include "components/resource_provider/public/cpp/resource_loader.h"
-#include "components/resource_provider/public/interfaces/resource_provider.mojom.h"
-#include "mojo/common/common_type_converters.h"
-#include "mojo/platform_handle/platform_handle_functions.h"
-#include "mojo/public/cpp/bindings/array.h"
-#include "mojo/shell/public/cpp/application_test_base.h"
-
-namespace resource_provider {
-namespace {
-
-std::string ReadFile(base::File* file) {
-  const size_t kBufferSize = 1 << 16;
-  scoped_ptr<char[]> buffer(new char[kBufferSize]);
-  const int read = file->ReadAtCurrentPos(buffer.get(), kBufferSize);
-  if (read == -1)
-    return std::string();
-  return std::string(buffer.get(), read);
-}
-
-std::set<std::string> SetWithString(const std::string& contents) {
-  std::set<std::string> result;
-  result.insert(contents);
-  return result;
-}
-
-std::set<std::string> SetWithStrings(const std::string& contents1,
-                                     const std::string& contents2) {
-  std::set<std::string> result;
-  result.insert(contents1);
-  result.insert(contents2);
-  return result;
-}
-
-class ResourceProviderApplicationTest : public mojo::test::ApplicationTestBase {
- public:
-  ResourceProviderApplicationTest() {}
-  ~ResourceProviderApplicationTest() override {}
-
- protected:
-  using ResourceContentsMap = std::map<std::string, std::string>;
-
-  // Queries ResourceProvider for the specified resources, blocking until the
-  // resources are returned. The return map maps from the path to the contents
-  // of the file at the specified path.
-  ResourceContentsMap GetResources(const std::set<std::string>& paths) {
-    ResourceLoader loader(connector(), paths);
-    loader.BlockUntilLoaded();
-
-    // Load the contents of each of the handles.
-    ResourceContentsMap results;
-    for (auto& path : paths) {
-      base::File file(loader.ReleaseFile(path));
-      results[path] = ReadFile(&file);
-    }
-    return results;
-  }
-
-  // ApplicationTestBase:
-  void SetUp() override {
-    ApplicationTestBase::SetUp();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ResourceProviderApplicationTest);
-};
-
-TEST_F(ResourceProviderApplicationTest, FetchOneResource) {
-  ResourceContentsMap results(GetResources(SetWithString("sample")));
-  ASSERT_TRUE(results.count("sample") > 0u);
-  EXPECT_EQ("test data\n", results["sample"]);
-}
-
-TEST_F(ResourceProviderApplicationTest, FetchTwoResources) {
-  ResourceContentsMap results(
-      GetResources(SetWithStrings("sample", "dir/sample2")));
-  ASSERT_TRUE(results.count("sample") > 0u);
-  EXPECT_EQ("test data\n", results["sample"]);
-
-  ASSERT_TRUE(results.count("dir/sample2") > 0u);
-  EXPECT_EQ("xxyy\n", results["dir/sample2"]);
-}
-
-}  // namespace
-}  // namespace resource_provider