[ios] Cleanup SessionServiceIOS implementation.

ios/chrome/browser/sessions/session_service_unittest.mm

Index: ios/chrome/browser/sessions/session_service_unittest.mm
diff --git a/ios/chrome/browser/sessions/session_service_unittest.mm b/ios/chrome/browser/sessions/session_service_unittest.mm
deleted file mode 100644
index f6cbfcf5008031abd3d71c9b4567bc75a4b4f868..0000000000000000000000000000000000000000
--- a/ios/chrome/browser/sessions/session_service_unittest.mm
+++ /dev/null
@@ -1,162 +0,0 @@
-// Copyright 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.
-
-#import <Foundation/Foundation.h>
-
-#include <memory>
-
-#include "base/files/file_path.h"
-#include "base/files/file_util.h"
-#include "base/files/scoped_temp_dir.h"
-#include "base/path_service.h"
-#include "base/strings/sys_string_conversions.h"
-#include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
-#include "ios/chrome/browser/chrome_paths.h"
-#import "ios/chrome/browser/sessions/session_service.h"
-#import "ios/chrome/browser/sessions/session_window_ios.h"
-#include "ios/web/public/navigation_item.h"
-#import "ios/web/public/navigation_manager.h"
-#include "ios/web/public/test/test_web_thread_bundle.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "testing/gtest_mac.h"
-#include "testing/platform_test.h"
-#import "third_party/ocmock/OCMock/OCMock.h"
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-namespace {
-
-// Fixture Class. Takes care of deleting the directory used to store test data.
-class SessionServiceTest : public PlatformTest {
- public:
-  SessionServiceTest() = default;
-  ~SessionServiceTest() override = default;
-
- protected:
-  void SetUp() override {
-    PlatformTest::SetUp();
-    ASSERT_TRUE(test_dir_.CreateUniqueTempDir());
-    TestChromeBrowserState::Builder test_cbs_builder;
-    test_cbs_builder.SetPath(test_dir_.GetPath());
-    chrome_browser_state_ = test_cbs_builder.Build();
-    directory_name_ = [base::SysUTF8ToNSString(
-        chrome_browser_state_->GetStatePath().value()) copy];
-  }
-
-  // Helper function to load a SessionWindowIOS from a given testdata
-  // |filename|.  Returns nil if there was an error loading the session.
-  SessionWindowIOS* LoadSessionFromTestDataFile(
-      const base::FilePath::StringType& filename) {
-    SessionServiceIOS* service = [SessionServiceIOS sharedService];
-    base::FilePath plist_path;
-    bool success = PathService::Get(ios::DIR_TEST_DATA, &plist_path);
-    EXPECT_TRUE(success);
-    if (!success) {
-      return nil;
-    }
-
-    plist_path = plist_path.AppendASCII("sessions");
-    plist_path = plist_path.Append(filename);
-    EXPECT_TRUE(base::PathExists(plist_path));
-
-    NSString* path = base::SysUTF8ToNSString(plist_path.value());
-    return [service loadWindowFromPath:path
-                       forBrowserState:chrome_browser_state_.get()];
-  }
-
-  ios::ChromeBrowserState* chrome_browser_state() {
-    return chrome_browser_state_.get();
-  }
-
-  NSString* directory_name() { return directory_name_; }
-
- private:
-  base::ScopedTempDir test_dir_;
-  web::TestWebThreadBundle thread_bundle_;
-  std::unique_ptr<ios::ChromeBrowserState> chrome_browser_state_;
-  NSString* directory_name_;
-
-  DISALLOW_COPY_AND_ASSIGN(SessionServiceTest);
-};
-
-TEST_F(SessionServiceTest, Singleton) {
-  SessionServiceIOS* service = [SessionServiceIOS sharedService];
-  EXPECT_TRUE(service != nil);
-
-  SessionServiceIOS* another_service = [SessionServiceIOS sharedService];
-  EXPECT_TRUE(another_service != nil);
-
-  EXPECT_TRUE(service == another_service);
-}
-
-TEST_F(SessionServiceTest, SaveWindowToDirectory) {
-  id session_window_mock =
-      [OCMockObject niceMockForClass:[SessionWindowIOS class]];
-  SessionServiceIOS* service = [SessionServiceIOS sharedService];
-  [service performSaveWindow:session_window_mock toDirectory:directory_name()];
-
-  NSFileManager* file_manager = [NSFileManager defaultManager];
-  EXPECT_TRUE([file_manager removeItemAtPath:directory_name() error:nullptr]);
-}
-
-TEST_F(SessionServiceTest, SaveWindowToDirectoryAlreadyExistent) {
-  id session_window_mock =
-      [OCMockObject niceMockForClass:[SessionWindowIOS class]];
-  EXPECT_TRUE([[NSFileManager defaultManager]
-            createDirectoryAtPath:directory_name()
-      withIntermediateDirectories:YES
-                       attributes:nil
-                            error:nullptr]);
-
-  SessionServiceIOS* service = [SessionServiceIOS sharedService];
-  [service performSaveWindow:session_window_mock toDirectory:directory_name()];
-
-  NSFileManager* file_manager = [NSFileManager defaultManager];
-  EXPECT_TRUE([file_manager removeItemAtPath:directory_name() error:nullptr]);
-}
-
-TEST_F(SessionServiceTest, LoadEmptyWindowFromDirectory) {
-  SessionServiceIOS* service = [SessionServiceIOS sharedService];
-  SessionWindowIOS* session_window =
-      [service loadWindowForBrowserState:chrome_browser_state()];
-  EXPECT_TRUE(session_window == nil);
-}
-
-TEST_F(SessionServiceTest, LoadWindowFromDirectory) {
-  SessionServiceIOS* service = [SessionServiceIOS sharedService];
-  SessionWindowIOS* origSessionWindow = [[SessionWindowIOS alloc] init];
-  [service performSaveWindow:origSessionWindow toDirectory:directory_name()];
-
-  SessionWindowIOS* session_window =
-      [service loadWindowForBrowserState:chrome_browser_state()];
-  EXPECT_TRUE(session_window != nil);
-  EXPECT_EQ(NSNotFound, static_cast<NSInteger>(session_window.selectedIndex));
-  EXPECT_EQ(0U, session_window.sessions.count);
-}
-
-TEST_F(SessionServiceTest, LoadCorruptedWindow) {
-  SessionWindowIOS* session_window =
-      LoadSessionFromTestDataFile(FILE_PATH_LITERAL("corrupted.plist"));
-  EXPECT_TRUE(session_window == nil);
-}
-
-// TODO(crbug.com/661633): remove this once M67 has shipped (i.e. once more
-// than a year has passed since the introduction of the compatibility code).
-TEST_F(SessionServiceTest, LoadM57Session) {
-  SessionWindowIOS* session_window =
-      LoadSessionFromTestDataFile(FILE_PATH_LITERAL("session_m57.plist"));
-  EXPECT_TRUE(session_window != nil);
-}
-
-// TODO(crbug.com/661633): remove this once M68 has shipped (i.e. once more
-// than a year has passed since the introduction of the compatibility code).
-TEST_F(SessionServiceTest, LoadM58Session) {
-  SessionWindowIOS* session_window =
-      LoadSessionFromTestDataFile(FILE_PATH_LITERAL("session_m58.plist"));
-  EXPECT_TRUE(session_window != nil);
-}
-
-}  // anonymous namespace