net/http/http_transaction_unittest.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_
   6 #define NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_
   7
   8 #include "net/http/http_transaction.h"
   9
  10 #include <string>
  11
  12 #include "base/callback.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/memory/weak_ptr.h"
  15 #include "base/strings/string16.h"
  16 #include "net/base/io_buffer.h"
  17 #include "net/base/load_flags.h"
  18 #include "net/base/net_errors.h"
  19 #include "net/base/net_log.h"
  20 #include "net/base/request_priority.h"
  21 #include "net/base/test_completion_callback.h"
  22 #include "net/disk_cache/disk_cache.h"
  23 #include "net/http/http_cache.h"
  24 #include "net/http/http_request_info.h"
  25 #include "net/http/http_response_headers.h"
  26 #include "net/http/http_response_info.h"
  27
  28 namespace net {
  29 class HttpRequestHeaders;
  30 class IOBuffer;
  31 }
  32
  33 //-----------------------------------------------------------------------------
  34 // mock transaction data
  35
  36 // these flags may be combined to form the test_mode field
  37 enum {
  38   TEST_MODE_NORMAL = 0,
  39   TEST_MODE_SYNC_NET_START = 1 << 0,
  40   TEST_MODE_SYNC_NET_READ  = 1 << 1,
  41   TEST_MODE_SYNC_CACHE_START = 1 << 2,
  42   TEST_MODE_SYNC_CACHE_READ  = 1 << 3,
  43   TEST_MODE_SYNC_CACHE_WRITE  = 1 << 4,
  44   TEST_MODE_SYNC_ALL = (TEST_MODE_SYNC_NET_START | TEST_MODE_SYNC_NET_READ |
  45                         TEST_MODE_SYNC_CACHE_START | TEST_MODE_SYNC_CACHE_READ |
  46                         TEST_MODE_SYNC_CACHE_WRITE)
  47 };
  48
  49 typedef void (*MockTransactionHandler)(const net::HttpRequestInfo* request,
  50                                        std::string* response_status,
  51                                        std::string* response_headers,
  52                                        std::string* response_data);
  53
  54 struct MockTransaction {
  55   const char* url;
  56   const char* method;
  57   // If |request_time| is unspecified, the current time will be used.
  58   base::Time request_time;
  59   const char* request_headers;
  60   int load_flags;
  61   const char* status;
  62   const char* response_headers;
  63   // If |response_time| is unspecified, the current time will be used.
  64   base::Time response_time;
  65   const char* data;
  66   int test_mode;
  67   MockTransactionHandler handler;
  68   net::CertStatus cert_status;
  69   // Value returned by MockNetworkTransaction::Start (potentially
  70   // asynchronously if |!(test_mode & TEST_MODE_SYNC_NET_START)|.)
  71   net::Error return_code;
  72 };
  73
  74 extern const MockTransaction kSimpleGET_Transaction;
  75 extern const MockTransaction kSimplePOST_Transaction;
  76 extern const MockTransaction kTypicalGET_Transaction;
  77 extern const MockTransaction kETagGET_Transaction;
  78 extern const MockTransaction kRangeGET_Transaction;
  79
  80 // returns the mock transaction for the given URL
  81 const MockTransaction* FindMockTransaction(const GURL& url);
  82
  83 // Add/Remove a mock transaction that can be accessed via FindMockTransaction.
  84 // There can be only one MockTransaction associated with a given URL.
  85 void AddMockTransaction(const MockTransaction* trans);
  86 void RemoveMockTransaction(const MockTransaction* trans);
  87
  88 struct ScopedMockTransaction : MockTransaction {
  89   ScopedMockTransaction() {
  90     AddMockTransaction(this);
  91   }
  92   explicit ScopedMockTransaction(const MockTransaction& t)
  93       : MockTransaction(t) {
  94     AddMockTransaction(this);
  95   }
  96   ~ScopedMockTransaction() {
  97     RemoveMockTransaction(this);
  98   }
  99 };
 100
 101 //-----------------------------------------------------------------------------
 102 // mock http request
 103
 104 class MockHttpRequest : public net::HttpRequestInfo {
 105  public:
 106   explicit MockHttpRequest(const MockTransaction& t);
 107 };
 108
 109 //-----------------------------------------------------------------------------
 110 // use this class to test completely consuming a transaction
 111
 112 class TestTransactionConsumer {
 113  public:
 114   TestTransactionConsumer(net::RequestPriority priority,
 115                           net::HttpTransactionFactory* factory);
 116   virtual ~TestTransactionConsumer();
 117
 118   void Start(const net::HttpRequestInfo* request,
 119              const net::BoundNetLog& net_log);
 120
 121   bool is_done() const { return state_ == DONE; }
 122   int error() const { return error_; }
 123
 124   const net::HttpResponseInfo* response_info() const {
 125     return trans_->GetResponseInfo();
 126   }
 127   const std::string& content() const { return content_; }
 128
 129  private:
 130   enum State {
 131     IDLE,
 132     STARTING,
 133     READING,
 134     DONE
 135   };
 136
 137   void DidStart(int result);
 138   void DidRead(int result);
 139   void DidFinish(int result);
 140   void Read();
 141
 142   void OnIOComplete(int result);
 143
 144   State state_;
 145   scoped_ptr<net::HttpTransaction> trans_;
 146   std::string content_;
 147   scoped_refptr<net::IOBuffer> read_buf_;
 148   int error_;
 149
 150   static int quit_counter_;
 151 };
 152
 153 //-----------------------------------------------------------------------------
 154 // mock network layer
 155
 156 class MockNetworkLayer;
 157
 158 // This transaction class inspects the available set of mock transactions to
 159 // find data for the request URL.  It supports IO operations that complete
 160 // synchronously or asynchronously to help exercise different code paths in the
 161 // HttpCache implementation.
 162 class MockNetworkTransaction
 163     : public net::HttpTransaction,
 164       public base::SupportsWeakPtr<MockNetworkTransaction> {
 165  public:
 166   MockNetworkTransaction(net::RequestPriority priority,
 167                          MockNetworkLayer* factory);
 168   virtual ~MockNetworkTransaction();
 169
 170   virtual int Start(const net::HttpRequestInfo* request,
 171                     const net::CompletionCallback& callback,
 172                     const net::BoundNetLog& net_log) OVERRIDE;
 173
 174   virtual int RestartIgnoringLastError(
 175       const net::CompletionCallback& callback) OVERRIDE;
 176
 177   virtual int RestartWithCertificate(
 178       net::X509Certificate* client_cert,
 179       const net::CompletionCallback& callback) OVERRIDE;
 180
 181   virtual int RestartWithAuth(
 182       const net::AuthCredentials& credentials,
 183       const net::CompletionCallback& callback) OVERRIDE;
 184
 185   virtual bool IsReadyToRestartForAuth() OVERRIDE;
 186
 187   virtual int Read(net::IOBuffer* buf, int buf_len,
 188                    const net::CompletionCallback& callback) OVERRIDE;
 189
 190   virtual void StopCaching() OVERRIDE;
 191
 192   virtual bool GetFullRequestHeaders(
 193       net::HttpRequestHeaders* headers) const OVERRIDE;
 194
 195   virtual void DoneReading() OVERRIDE;
 196
 197   virtual const net::HttpResponseInfo* GetResponseInfo() const OVERRIDE;
 198
 199   virtual net::LoadState GetLoadState() const OVERRIDE;
 200
 201   virtual net::UploadProgress GetUploadProgress() const OVERRIDE;
 202
 203   virtual bool GetLoadTimingInfo(
 204       net::LoadTimingInfo* load_timing_info) const OVERRIDE;
 205
 206   virtual void SetPriority(net::RequestPriority priority) OVERRIDE;
 207
 208   net::RequestPriority priority() const { return priority_; }
 209
 210  private:
 211   void CallbackLater(const net::CompletionCallback& callback, int result);
 212   void RunCallback(const net::CompletionCallback& callback, int result);
 213
 214   base::WeakPtrFactory<MockNetworkTransaction> weak_factory_;
 215   net::HttpResponseInfo response_;
 216   std::string data_;
 217   int data_cursor_;
 218   int test_mode_;
 219   net::RequestPriority priority_;
 220   base::WeakPtr<MockNetworkLayer> transaction_factory_;
 221
 222   // NetLog ID of the fake / non-existent underlying socket used by the
 223   // connection. Requires Start() be passed a BoundNetLog with a real NetLog to
 224   // be initialized.
 225   unsigned int socket_log_id_;
 226 };
 227
 228 class MockNetworkLayer : public net::HttpTransactionFactory,
 229                          public base::SupportsWeakPtr<MockNetworkLayer> {
 230  public:
 231   MockNetworkLayer();
 232   virtual ~MockNetworkLayer();
 233
 234   int transaction_count() const { return transaction_count_; }
 235   bool done_reading_called() const { return done_reading_called_; }
 236   void TransactionDoneReading();
 237
 238   // Returns the last priority passed to CreateTransaction, or
 239   // DEFAULT_PRIORITY if it hasn't been called yet.
 240   net::RequestPriority last_create_transaction_priority() const {
 241     return last_create_transaction_priority_;
 242   }
 243
 244   // Returns the last transaction created by
 245   // CreateTransaction. Returns a NULL WeakPtr if one has not been
 246   // created yet, or the last transaction has been destroyed, or
 247   // ClearLastTransaction() has been called and a new transaction
 248   // hasn't been created yet.
 249   base::WeakPtr<MockNetworkTransaction> last_transaction() {
 250     return last_transaction_;
 251   }
 252
 253   // Makes last_transaction() return NULL until the next transaction
 254   // is created.
 255   void ClearLastTransaction() {
 256     last_transaction_.reset();
 257   }
 258
 259   // net::HttpTransactionFactory:
 260   virtual int CreateTransaction(
 261       net::RequestPriority priority,
 262       scoped_ptr<net::HttpTransaction>* trans,
 263       net::HttpTransactionDelegate* delegate) OVERRIDE;
 264   virtual net::HttpCache* GetCache() OVERRIDE;
 265   virtual net::HttpNetworkSession* GetSession() OVERRIDE;
 266
 267  private:
 268   int transaction_count_;
 269   bool done_reading_called_;
 270   net::RequestPriority last_create_transaction_priority_;
 271   base::WeakPtr<MockNetworkTransaction> last_transaction_;
 272 };
 273
 274 //-----------------------------------------------------------------------------
 275 // helpers
 276
 277 // read the transaction completely
 278 int ReadTransaction(net::HttpTransaction* trans, std::string* result);
 279
 280 #endif  // NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_