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28 #ifndef TALK_BASE_TESTUTILS_H__
29 #define TALK_BASE_TESTUTILS_H__
31 // Utilities for testing talk_base infrastructure in unittests
35 #include <X11/extensions/Xrandr.h>
37 // X defines a few macros that stomp on types that gunit.h uses.
44 #include "talk/base/asyncsocket.h"
45 #include "talk/base/common.h"
46 #include "talk/base/gunit.h"
47 #include "talk/base/nethelpers.h"
48 #include "talk/base/pathutils.h"
49 #include "talk/base/stream.h"
50 #include "talk/base/stringencode.h"
51 #include "talk/base/stringutils.h"
52 #include "talk/base/thread.h"
56 using namespace talk_base;
58 ///////////////////////////////////////////////////////////////////////////////
59 // StreamSink - Monitor asynchronously signalled events from StreamInterface
60 // or AsyncSocket (which should probably be a StreamInterface.
61 ///////////////////////////////////////////////////////////////////////////////
63 // Note: Any event that is an error is treaded as SSE_ERROR instead of that
66 enum StreamSinkEvent {
74 class StreamSink : public sigslot::has_slots<> {
76 void Monitor(StreamInterface* stream) {
77 stream->SignalEvent.connect(this, &StreamSink::OnEvent);
78 events_.erase(stream);
80 void Unmonitor(StreamInterface* stream) {
81 stream->SignalEvent.disconnect(this);
82 // In case you forgot to unmonitor a previous object with this address
83 events_.erase(stream);
85 bool Check(StreamInterface* stream, StreamSinkEvent event, bool reset = true) {
86 return DoCheck(stream, event, reset);
88 int Events(StreamInterface* stream, bool reset = true) {
89 return DoEvents(stream, reset);
92 void Monitor(AsyncSocket* socket) {
93 socket->SignalConnectEvent.connect(this, &StreamSink::OnConnectEvent);
94 socket->SignalReadEvent.connect(this, &StreamSink::OnReadEvent);
95 socket->SignalWriteEvent.connect(this, &StreamSink::OnWriteEvent);
96 socket->SignalCloseEvent.connect(this, &StreamSink::OnCloseEvent);
97 // In case you forgot to unmonitor a previous object with this address
98 events_.erase(socket);
100 void Unmonitor(AsyncSocket* socket) {
101 socket->SignalConnectEvent.disconnect(this);
102 socket->SignalReadEvent.disconnect(this);
103 socket->SignalWriteEvent.disconnect(this);
104 socket->SignalCloseEvent.disconnect(this);
105 events_.erase(socket);
107 bool Check(AsyncSocket* socket, StreamSinkEvent event, bool reset = true) {
108 return DoCheck(socket, event, reset);
110 int Events(AsyncSocket* socket, bool reset = true) {
111 return DoEvents(socket, reset);
115 typedef std::map<void*,int> EventMap;
117 void OnEvent(StreamInterface* stream, int events, int error) {
121 AddEvents(stream, events);
123 void OnConnectEvent(AsyncSocket* socket) {
124 AddEvents(socket, SSE_OPEN);
126 void OnReadEvent(AsyncSocket* socket) {
127 AddEvents(socket, SSE_READ);
129 void OnWriteEvent(AsyncSocket* socket) {
130 AddEvents(socket, SSE_WRITE);
132 void OnCloseEvent(AsyncSocket* socket, int error) {
133 AddEvents(socket, (0 == error) ? SSE_CLOSE : SSE_ERROR);
136 void AddEvents(void* obj, int events) {
137 EventMap::iterator it = events_.find(obj);
138 if (events_.end() == it) {
139 events_.insert(EventMap::value_type(obj, events));
141 it->second |= events;
144 bool DoCheck(void* obj, StreamSinkEvent event, bool reset) {
145 EventMap::iterator it = events_.find(obj);
146 if ((events_.end() == it) || (0 == (it->second & event))) {
150 it->second &= ~event;
154 int DoEvents(void* obj, bool reset) {
155 EventMap::iterator it = events_.find(obj);
156 if (events_.end() == it)
158 int events = it->second;
168 ///////////////////////////////////////////////////////////////////////////////
169 // StreamSource - Implements stream interface and simulates asynchronous
170 // events on the stream, without a network. Also buffers written data.
171 ///////////////////////////////////////////////////////////////////////////////
173 class StreamSource : public StreamInterface {
180 readable_data_.clear();
181 written_data_.clear();
184 write_block_ = SIZE_UNKNOWN;
186 void QueueString(const char* data) {
187 QueueData(data, strlen(data));
189 void QueueStringF(const char* format, ...) {
191 va_start(args, format);
193 size_t len = vsprintfn(buffer, sizeof(buffer), format, args);
194 ASSERT(len < sizeof(buffer) - 1);
196 QueueData(buffer, len);
198 void QueueData(const char* data, size_t len) {
199 readable_data_.insert(readable_data_.end(), data, data + len);
200 if ((SS_OPEN == state_) && (readable_data_.size() == len)) {
201 SignalEvent(this, SE_READ, 0);
204 std::string ReadData() {
206 // avoid accessing written_data_[0] if it is undefined
207 if (written_data_.size() > 0) {
208 data.insert(0, &written_data_[0], written_data_.size());
210 written_data_.clear();
213 void SetState(StreamState state) {
215 if ((SS_OPENING == state_) && (SS_OPEN == state)) {
217 if (!readable_data_.empty()) {
220 } else if ((SS_CLOSED != state_) && (SS_CLOSED == state)) {
225 SignalEvent(this, events, 0);
228 // Will cause Read to block when there are pos bytes in the read queue.
229 void SetReadBlock(size_t pos) { read_block_ = pos; }
230 // Will cause Write to block when there are pos bytes in the write queue.
231 void SetWriteBlock(size_t pos) { write_block_ = pos; }
233 virtual StreamState GetState() const { return state_; }
234 virtual StreamResult Read(void* buffer, size_t buffer_len,
235 size_t* read, int* error) {
236 if (SS_CLOSED == state_) {
237 if (error) *error = -1;
240 if ((SS_OPENING == state_) || (readable_data_.size() <= read_block_)) {
243 size_t count = _min(buffer_len, readable_data_.size() - read_block_);
244 memcpy(buffer, &readable_data_[0], count);
245 size_t new_size = readable_data_.size() - count;
246 // Avoid undefined access beyond the last element of the vector.
247 // This only happens when new_size is 0.
248 if (count < readable_data_.size()) {
249 memmove(&readable_data_[0], &readable_data_[count], new_size);
251 readable_data_.resize(new_size);
252 if (read) *read = count;
255 virtual StreamResult Write(const void* data, size_t data_len,
256 size_t* written, int* error) {
257 if (SS_CLOSED == state_) {
258 if (error) *error = -1;
261 if (SS_OPENING == state_) {
264 if (SIZE_UNKNOWN != write_block_) {
265 if (written_data_.size() >= write_block_) {
268 if (data_len > (write_block_ - written_data_.size())) {
269 data_len = write_block_ - written_data_.size();
272 if (written) *written = data_len;
273 const char* cdata = static_cast<const char*>(data);
274 written_data_.insert(written_data_.end(), cdata, cdata + data_len);
277 virtual void Close() { state_ = SS_CLOSED; }
280 typedef std::vector<char> Buffer;
281 Buffer readable_data_, written_data_;
283 size_t read_block_, write_block_;
286 ///////////////////////////////////////////////////////////////////////////////
288 // Creates a simulated client for testing. Works on real and virtual networks.
289 ///////////////////////////////////////////////////////////////////////////////
291 class SocketTestClient : public sigslot::has_slots<> {
296 SocketTestClient(AsyncSocket* socket) {
297 Init(socket, socket->GetLocalAddress().family());
299 SocketTestClient(const SocketAddress& address) {
300 Init(NULL, address.family());
301 socket_->Connect(address);
304 AsyncSocket* socket() { return socket_.get(); }
306 void QueueString(const char* data) {
307 QueueData(data, strlen(data));
309 void QueueStringF(const char* format, ...) {
311 va_start(args, format);
313 size_t len = vsprintfn(buffer, sizeof(buffer), format, args);
314 ASSERT(len < sizeof(buffer) - 1);
316 QueueData(buffer, len);
318 void QueueData(const char* data, size_t len) {
319 send_buffer_.insert(send_buffer_.end(), data, data + len);
320 if (Socket::CS_CONNECTED == socket_->GetState()) {
324 std::string ReadData() {
325 std::string data(&recv_buffer_[0], recv_buffer_.size());
326 recv_buffer_.clear();
330 bool IsConnected() const {
331 return (Socket::CS_CONNECTED == socket_->GetState());
333 bool IsClosed() const {
334 return (Socket::CS_CLOSED == socket_->GetState());
338 typedef std::vector<char> Buffer;
340 void Init(AsyncSocket* socket, int family) {
342 socket = Thread::Current()->socketserver()
343 ->CreateAsyncSocket(family, SOCK_STREAM);
345 socket_.reset(socket);
346 socket_->SignalConnectEvent.connect(this,
347 &SocketTestClient::OnConnectEvent);
348 socket_->SignalReadEvent.connect(this, &SocketTestClient::OnReadEvent);
349 socket_->SignalWriteEvent.connect(this, &SocketTestClient::OnWriteEvent);
350 socket_->SignalCloseEvent.connect(this, &SocketTestClient::OnCloseEvent);
355 while (sent < send_buffer_.size()) {
356 int result = socket_->Send(&send_buffer_[sent],
357 send_buffer_.size() - sent);
364 size_t new_size = send_buffer_.size() - sent;
365 memmove(&send_buffer_[0], &send_buffer_[sent], new_size);
366 send_buffer_.resize(new_size);
369 void OnConnectEvent(AsyncSocket* socket) {
370 if (!send_buffer_.empty()) {
374 void OnReadEvent(AsyncSocket* socket) {
375 char data[64 * 1024];
376 int result = socket_->Recv(data, ARRAY_SIZE(data));
378 recv_buffer_.insert(recv_buffer_.end(), data, data + result);
381 void OnWriteEvent(AsyncSocket* socket) {
382 if (!send_buffer_.empty()) {
386 void OnCloseEvent(AsyncSocket* socket, int error) {
389 scoped_ptr<AsyncSocket> socket_;
390 Buffer send_buffer_, recv_buffer_;
393 ///////////////////////////////////////////////////////////////////////////////
395 // Creates a simulated server for testing. Works on real and virtual networks.
396 ///////////////////////////////////////////////////////////////////////////////
398 class SocketTestServer : public sigslot::has_slots<> {
400 SocketTestServer(const SocketAddress& address)
401 : socket_(Thread::Current()->socketserver()
402 ->CreateAsyncSocket(address.family(), SOCK_STREAM))
404 socket_->SignalReadEvent.connect(this, &SocketTestServer::OnReadEvent);
405 socket_->Bind(address);
408 virtual ~SocketTestServer() {
412 size_t size() const { return clients_.size(); }
413 SocketTestClient* client(size_t index) const { return clients_[index]; }
414 SocketTestClient* operator[](size_t index) const { return client(index); }
417 for (size_t i=0; i<clients_.size(); ++i) {
424 void OnReadEvent(AsyncSocket* socket) {
425 AsyncSocket* accepted =
426 static_cast<AsyncSocket*>(socket_->Accept(NULL));
429 clients_.push_back(new SocketTestClient(accepted));
432 scoped_ptr<AsyncSocket> socket_;
433 std::vector<SocketTestClient*> clients_;
436 ///////////////////////////////////////////////////////////////////////////////
438 ///////////////////////////////////////////////////////////////////////////////
440 inline bool ReadFile(const char* filename, std::string* contents) {
441 FILE* fp = fopen(filename, "rb");
444 char buffer[1024*64];
447 while ((read = fread(buffer, 1, sizeof(buffer), fp))) {
448 contents->append(buffer, read);
450 bool success = (0 != feof(fp));
455 // Look in parent dir for parallel directory.
456 inline talk_base::Pathname GetSiblingDirectory(
457 const std::string& parallel_dir) {
458 talk_base::Pathname path = talk_base::Filesystem::GetCurrentDirectory();
459 while (!path.empty()) {
460 talk_base::Pathname potential_parallel_dir = path;
461 potential_parallel_dir.AppendFolder(parallel_dir);
462 if (talk_base::Filesystem::IsFolder(potential_parallel_dir)) {
463 return potential_parallel_dir;
466 path.SetFolder(path.parent_folder());
471 inline talk_base::Pathname GetGoogle3Directory() {
472 return GetSiblingDirectory("google3");
475 inline talk_base::Pathname GetTalkDirectory() {
476 return GetSiblingDirectory("talk");
479 ///////////////////////////////////////////////////////////////////////////////
480 // Unittest predicates which are similar to STREQ, but for raw memory
481 ///////////////////////////////////////////////////////////////////////////////
483 inline AssertionResult CmpHelperMemEq(const char* expected_expression,
484 const char* expected_length_expression,
485 const char* actual_expression,
486 const char* actual_length_expression,
487 const void* expected,
488 size_t expected_length,
490 size_t actual_length)
492 if ((expected_length == actual_length)
493 && (0 == memcmp(expected, actual, expected_length))) {
494 return AssertionSuccess();
498 msg << "Value of: " << actual_expression
499 << " [" << actual_length_expression << "]";
500 if (true) { //!actual_value.Equals(actual_expression)) {
501 size_t buffer_size = actual_length * 2 + 1;
502 char* buffer = STACK_ARRAY(char, buffer_size);
503 hex_encode(buffer, buffer_size,
504 reinterpret_cast<const char*>(actual), actual_length);
505 msg << "\n Actual: " << buffer << " [" << actual_length << "]";
508 msg << "\nExpected: " << expected_expression
509 << " [" << expected_length_expression << "]";
510 if (true) { //!expected_value.Equals(expected_expression)) {
511 size_t buffer_size = expected_length * 2 + 1;
512 char* buffer = STACK_ARRAY(char, buffer_size);
513 hex_encode(buffer, buffer_size,
514 reinterpret_cast<const char*>(expected), expected_length);
515 msg << "\nWhich is: " << buffer << " [" << expected_length << "]";
518 return AssertionFailure(msg);
521 inline AssertionResult CmpHelperFileEq(const char* expected_expression,
522 const char* expected_length_expression,
523 const char* actual_filename,
524 const void* expected,
525 size_t expected_length,
526 const char* filename)
528 std::string contents;
529 if (!ReadFile(filename, &contents)) {
531 msg << "File '" << filename << "' could not be read.";
532 return AssertionFailure(msg);
534 return CmpHelperMemEq(expected_expression, expected_length_expression,
536 expected, expected_length,
537 contents.c_str(), contents.size());
540 #define EXPECT_MEMEQ(expected, expected_length, actual, actual_length) \
541 EXPECT_PRED_FORMAT4(::testing::CmpHelperMemEq, expected, expected_length, \
542 actual, actual_length)
544 #define ASSERT_MEMEQ(expected, expected_length, actual, actual_length) \
545 ASSERT_PRED_FORMAT4(::testing::CmpHelperMemEq, expected, expected_length, \
546 actual, actual_length)
548 #define EXPECT_FILEEQ(expected, expected_length, filename) \
549 EXPECT_PRED_FORMAT3(::testing::CmpHelperFileEq, expected, expected_length, \
552 #define ASSERT_FILEEQ(expected, expected_length, filename) \
553 ASSERT_PRED_FORMAT3(::testing::CmpHelperFileEq, expected, expected_length, \
556 ///////////////////////////////////////////////////////////////////////////////
557 // Helpers for initializing constant memory with integers in a particular byte
559 ///////////////////////////////////////////////////////////////////////////////
561 #define BYTE_CAST(x) static_cast<uint8>((x) & 0xFF)
563 // Declare a N-bit integer as a little-endian sequence of bytes
564 #define LE16(x) BYTE_CAST(((uint16)x) >> 0), BYTE_CAST(((uint16)x) >> 8)
566 #define LE32(x) BYTE_CAST(((uint32)x) >> 0), BYTE_CAST(((uint32)x) >> 8), \
567 BYTE_CAST(((uint32)x) >> 16), BYTE_CAST(((uint32)x) >> 24)
569 #define LE64(x) BYTE_CAST(((uint64)x) >> 0), BYTE_CAST(((uint64)x) >> 8), \
570 BYTE_CAST(((uint64)x) >> 16), BYTE_CAST(((uint64)x) >> 24), \
571 BYTE_CAST(((uint64)x) >> 32), BYTE_CAST(((uint64)x) >> 40), \
572 BYTE_CAST(((uint64)x) >> 48), BYTE_CAST(((uint64)x) >> 56)
574 // Declare a N-bit integer as a big-endian (Internet) sequence of bytes
575 #define BE16(x) BYTE_CAST(((uint16)x) >> 8), BYTE_CAST(((uint16)x) >> 0)
577 #define BE32(x) BYTE_CAST(((uint32)x) >> 24), BYTE_CAST(((uint32)x) >> 16), \
578 BYTE_CAST(((uint32)x) >> 8), BYTE_CAST(((uint32)x) >> 0)
580 #define BE64(x) BYTE_CAST(((uint64)x) >> 56), BYTE_CAST(((uint64)x) >> 48), \
581 BYTE_CAST(((uint64)x) >> 40), BYTE_CAST(((uint64)x) >> 32), \
582 BYTE_CAST(((uint64)x) >> 24), BYTE_CAST(((uint64)x) >> 16), \
583 BYTE_CAST(((uint64)x) >> 8), BYTE_CAST(((uint64)x) >> 0)
585 // Declare a N-bit integer as a this-endian (local machine) sequence of bytes
598 #endif // !BIG_ENDIAN
600 ///////////////////////////////////////////////////////////////////////////////
602 // Helpers for determining if X/screencasting is available (on linux).
604 #define MAYBE_SKIP_SCREENCAST_TEST() \
605 if (!testing::IsScreencastingAvailable()) { \
606 LOG(LS_WARNING) << "Skipping test, since it doesn't have the requisite " \
607 << "X environment for screen capture."; \
613 XDisplay() : display_(XOpenDisplay(NULL)) { }
614 ~XDisplay() { if (display_) XCloseDisplay(display_); }
615 bool IsValid() const { return display_ != NULL; }
616 operator Display*() { return display_; }
622 // Returns true if screencasting is available. When false, anything that uses
623 // screencasting features may fail.
624 inline bool IsScreencastingAvailable() {
627 if (!display.IsValid()) {
628 LOG(LS_WARNING) << "No X Display available.";
631 int ignored_int, major_version, minor_version;
632 if (!XRRQueryExtension(display, &ignored_int, &ignored_int) ||
633 !XRRQueryVersion(display, &major_version, &minor_version) ||
635 (major_version < 2 && minor_version < 3)) {
636 LOG(LS_WARNING) << "XRandr version: " << major_version << "."
638 LOG(LS_WARNING) << "XRandr is not supported or is too old (pre 1.3).";
644 } // namespace testing
646 #endif // TALK_BASE_TESTUTILS_H__