1 files changed, 113 insertions, 0 deletions
diff --git a/protocols/Telegram/tdlib/td/tdutils/test/gzip.cpp b/protocols/Telegram/tdlib/td/tdutils/test/gzip.cpp
new file mode 100644
index 0000000000..e4bd81eb0d
--- /dev/null
+++ b/protocols/Telegram/tdlib/td/tdutils/test/gzip.cpp
@@ -0,0 +1,113 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/utils/buffer.h"
+#include "td/utils/ByteFlow.h"
+#include "td/utils/Gzip.h"
+#include "td/utils/GzipByteFlow.h"
+#include "td/utils/logging.h"
+#include "td/utils/Status.h"
+#include "td/utils/tests.h"
+
+static void encode_decode(td::string s) {
+  auto r = td::gzencode(s, 2);
+  ASSERT_TRUE(!r.empty());
+  if (r.empty()) {
+    return;
+  }
+  auto new_s = td::gzdecode(r.as_slice());
+  ASSERT_TRUE(!new_s.empty());
+  if (new_s.empty()) {
+    return;
+  }
+  ASSERT_EQ(s, new_s.as_slice().str());
+}
+
+TEST(Gzip, gzencode_gzdecode) {
+  auto str = td::rand_string(0, 127, 1000);
+  encode_decode(str);
+  str = td::rand_string('a', 'z', 1000000);
+  encode_decode(str);
+  str = td::string(1000000, 'a');
+  encode_decode(str);
+}
+
+TEST(Gzip, flow) {
+  auto str = td::rand_string('a', 'z', 1000000);
+  auto parts = td::rand_split(str);
+
+  auto input_writer = td::ChainBufferWriter::create_empty();
+  auto input = input_writer.extract_reader();
+  td::ByteFlowSource source(&input);
+  td::GzipByteFlow gzip_flow(td::Gzip::Encode);
+  gzip_flow = td::GzipByteFlow(td::Gzip::Encode);
+  td::ByteFlowSink sink;
+
+  source >> gzip_flow >> sink;
+
+  ASSERT_TRUE(!sink.is_ready());
+  for (auto &part : parts) {
+    input_writer.append(part);
+    source.wakeup();
+  }
+  ASSERT_TRUE(!sink.is_ready());
+  source.close_input(td::Status::OK());
+  ASSERT_TRUE(sink.is_ready());
+  ASSERT_TRUE(sink.status().is_ok());
+  auto res = sink.result()->move_as_buffer_slice().as_slice().str();
+  ASSERT_TRUE(!res.empty());
+  ASSERT_EQ(td::gzencode(str, 2).as_slice().str(), res);
+}
+TEST(Gzip, flow_error) {
+  auto str = td::rand_string('a', 'z', 1000000);
+  auto zip = td::gzencode(str).as_slice().str();
+  zip.resize(zip.size() - 1);
+  auto parts = td::rand_split(zip);
+
+  auto input_writer = td::ChainBufferWriter();
+  auto input = input_writer.extract_reader();
+  td::ByteFlowSource source(&input);
+  td::GzipByteFlow gzip_flow(td::Gzip::Decode);
+  td::ByteFlowSink sink;
+
+  source >> gzip_flow >> sink;
+
+  ASSERT_TRUE(!sink.is_ready());
+  for (auto &part : parts) {
+    input_writer.append(part);
+    source.wakeup();
+  }
+  ASSERT_TRUE(!sink.is_ready());
+  source.close_input(td::Status::OK());
+  ASSERT_TRUE(sink.is_ready());
+  ASSERT_TRUE(!sink.status().is_ok());
+}
+
+TEST(Gzip, encode_decode_flow) {
+  auto str = td::rand_string('a', 'z', 1000000);
+  auto parts = td::rand_split(str);
+  auto input_writer = td::ChainBufferWriter::create_empty();
+  auto input = input_writer.extract_reader();
+  td::ByteFlowSource source(&input);
+  td::GzipByteFlow gzip_encode_flow(td::Gzip::Encode);
+  td::GzipByteFlow gzip_decode_flow(td::Gzip::Decode);
+  td::GzipByteFlow gzip_encode_flow2(td::Gzip::Encode);
+  td::GzipByteFlow gzip_decode_flow2(td::Gzip::Decode);
+  td::ByteFlowSink sink;
+  source >> gzip_encode_flow >> gzip_decode_flow >> gzip_encode_flow2 >> gzip_decode_flow2 >> sink;
+
+  ASSERT_TRUE(!sink.is_ready());
+  for (auto &part : parts) {
+    input_writer.append(part);
+    source.wakeup();
+  }
+  ASSERT_TRUE(!sink.is_ready());
+  source.close_input(td::Status::OK());
+  ASSERT_TRUE(sink.is_ready());
+  LOG_IF(ERROR, sink.status().is_error()) << sink.status();
+  ASSERT_TRUE(sink.status().is_ok());
+  ASSERT_EQ(str, sink.result()->move_as_buffer_slice().as_slice().str());
+}