Moved serialization out of CRWSessionEntry.

ios/web/navigation/crw_navigation_item_storage_unittest.mm

+// Copyright 2017 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 "ios/web/public/crw_navigation_item_storage.h"
+
+#import <Foundation/Foundation.h>
+#include <stdint.h>
+
+#include <utility>
+
+#import "base/mac/scoped_nsobject.h"
+#include "base/strings/sys_string_conversions.h"
+#import "ios/web/navigation/navigation_item_impl.h"
+#include "ios/web/public/referrer.h"
+#import "net/base/mac/url_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#import "testing/gtest_mac.h"
+#include "testing/platform_test.h"
+#include "third_party/ocmock/gtest_support.h"
+#include "ui/base/page_transition_types.h"
+
+class CRWNavigationItemStorageTest : public PlatformTest {
+ protected:
+  CRWNavigationItemStorageTest()
+      : item_storage_([[CRWNavigationItemStorage alloc] init]) {
+    // Set up |item_storage_|.
+    [item_storage_ setVirtualURL:GURL("http://init.test")];
+    [item_storage_ setReferrer:web::Referrer(GURL("http://referrer.url"),
+                                             web::ReferrerPolicyDefault)];
+    [item_storage_ setTimestamp:base::Time::Now()];
+    [item_storage_ setTitle:base::SysNSStringToUTF16(@"Title")];
+    [item_storage_
+        setDisplayState:web::PageDisplayState(0.0, 0.0, 0.0, 0.0, 0.0)];
+    [item_storage_
+        setPOSTData:[@"Test data" dataUsingEncoding:NSUTF8StringEncoding]];
+    [item_storage_ setHTTPRequestHeaders:@{ @"HeaderKey" : @"HeaderValue" }];
+  }
+
+  // Convenience getter to facilitate dot notation in tests.
+  CRWNavigationItemStorage* item_storage() { return item_storage_; }
+
+ protected:
+  base::scoped_nsobject<CRWNavigationItemStorage> item_storage_;
+};
+
+// Tests initializing with the legacy keys.
+TEST_F(CRWNavigationItemStorageTest, InitWithCoderLegacy) {
+  NSURL* virtualURL = net::NSURLWithGURL(item_storage().virtualURL);
+  NSURL* referrerURL = net::NSURLWithGURL(item_storage().referrer.url);
+  NSString* title = base::SysUTF16ToNSString(item_storage().title);
+  // Legacy NavigationItems don't persist timestamp.
+  item_storage().timestamp = base::Time::FromCFAbsoluteTime(0);
+
+  // Set up archiver and unarchiver.
+  base::scoped_nsobject<NSMutableData> data([[NSMutableData alloc] init]);
+  base::scoped_nsobject<NSKeyedArchiver> archiver(
+      [[NSKeyedArchiver alloc] initForWritingWithMutableData:data]);
+  [archiver encodeObject:virtualURL
+                  forKey:web::kNavigationItemStorageURLDeperecatedKey];
+  [archiver encodeObject:referrerURL
+                  forKey:web::kNavigationItemStorageReferrerURLDeprecatedKey];
+  [archiver encodeObject:title forKey:web::kNavigationItemStorageTitleKey];
+  NSDictionary* display_state_dict =
+      item_storage().displayState.GetSerialization();
+  [archiver encodeObject:display_state_dict
+                  forKey:web::kNavigationItemStoragePageDisplayStateKey];
+  BOOL overriding_user_agent = item_storage().overridingUserAgent;
+  [archiver encodeBool:overriding_user_agent
+                forKey:web::kNavigationItemStorageUseDesktopUserAgentKey];
+  NSDictionary* request_headers = item_storage().HTTPRequestHeaders;
+  [archiver encodeObject:request_headers
+                  forKey:web::kNavigationItemStorageHTTPRequestHeadersKey];
+  [archiver encodeObject:item_storage().POSTData
+                  forKey:web::kNavigationItemStoragePOSTDataKey];
+  BOOL skip_repost_form_confirmation =
+      item_storage().shouldSkipRepostFormConfirmation;
+  [archiver
+      encodeBool:skip_repost_form_confirmation
+          forKey:web::kNavigationItemStorageSkipRepostFormConfirmationKey];
+  [archiver finishEncoding];
+  base::scoped_nsobject<NSKeyedUnarchiver> unarchiver(
+      [[NSKeyedUnarchiver alloc] initForReadingWithData:data]);
+
+  // Create a CRWNavigationItemStorage and verify that it is equivalent.
+  base::scoped_nsobject<CRWNavigationItemStorage> new_storage(
+      [[CRWNavigationItemStorage alloc] initWithCoder:unarchiver]);
+  EXPECT_NSEQ(item_storage(), new_storage.get());
+}
+
+// Tests that unarchiving CRWNavigationItemStorage data results in an equivalent
+// storage.
+TEST_F(CRWNavigationItemStorageTest, EncodeDecode) {
+  NSData* data = [NSKeyedArchiver archivedDataWithRootObject:item_storage()];
+  id decoded = [NSKeyedUnarchiver unarchiveObjectWithData:data];
+  EXPECT_NSEQ(item_storage(), decoded);
+}