components/cronet/android/test/cronet_test_util.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/cronet/android/test/cronet_test_util.h"

#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/message_loop/message_pump.h"
#include "base/message_loop/message_pump_type.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/sequence_manager/sequence_manager.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/bind.h"
#include "components/cronet/android/cronet_context_adapter.h"
#include "components/cronet/android/cronet_url_request_adapter.h"
#include "components/cronet/cronet_context.h"
#include "components/cronet/cronet_url_request.h"
#include "net/http/http_server_properties.h"
#include "net/quic/quic_context.h"
#include "net/socket/socket_test_util.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"

// Must come after all headers that specialize FromJniType() / ToJniType().
#include "components/cronet/android/cronet_test_apk_jni/CronetTestUtil_jni.h"
#include "net/third_party/quiche/src/quiche/quic/core/quic_tag.h"

namespace cronet {
namespace {

using ::base::MessagePump;
using ::base::MessagePumpType;
using ::base::android::JavaParamRef;
using ::base::sequence_manager::SequenceManager;

SequenceManager* g_sequence_manager = nullptr;

}  // namespace

jint JNI_CronetTestUtil_GetLoadFlags(JNIEnv* env,
                                     const jlong jurl_request_adapter) {
  return TestUtil::GetURLRequest(jurl_request_adapter)->load_flags();
}

jboolean JNI_CronetTestUtil_URLRequestContextExistsForTesting(
    JNIEnv* env,
    jlong jcontext_adapter,
    jlong jnetwork_handle) {
  return TestUtil::GetURLRequestContexts(jcontext_adapter)
      ->contains(jnetwork_handle);
}

jni_zero::ScopedJavaLocalRef<jobjectArray>
JNI_CronetTestUtil_GetClientConnectionOptions(JNIEnv* env,
                                              jlong jcontext_adapter) {
  std::vector<std::string> quic_tags;
  for (auto tag : TestUtil::GetDefaultURLRequestQuicParams(jcontext_adapter)
                      .client_connection_options) {
    quic_tags.push_back(quic::QuicTagToString(tag));
  }
  return base::android::ToJavaArrayOfStrings(env, std::move(quic_tags));
}

jni_zero::ScopedJavaLocalRef<jobjectArray>
JNI_CronetTestUtil_GetConnectionOptions(JNIEnv* env, jlong jcontext_adapter) {
  std::vector<std::string> quic_tags;
  for (auto tag : TestUtil::GetDefaultURLRequestQuicParams(jcontext_adapter)
                      .connection_options) {
    quic_tags.push_back(quic::QuicTagToString(tag));
  }
  return base::android::ToJavaArrayOfStrings(env, std::move(quic_tags));
}

// static
base::flat_map<net::handles::NetworkHandle,
               std::unique_ptr<net::URLRequestContext>>*
TestUtil::GetURLRequestContexts(jlong jcontext_adapter) {
  CronetContextAdapter* context_adapter =
      reinterpret_cast<CronetContextAdapter*>(jcontext_adapter);
  return &context_adapter->context_->network_tasks_->contexts_;
}

// static
scoped_refptr<base::SingleThreadTaskRunner> TestUtil::GetTaskRunner(
    jlong jcontext_adapter) {
  CronetContextAdapter* context_adapter =
      reinterpret_cast<CronetContextAdapter*>(jcontext_adapter);
  return context_adapter->context_->network_task_runner_;
}

// static
net::URLRequestContext* TestUtil::GetURLRequestContext(jlong jcontext_adapter) {
  CronetContextAdapter* context_adapter =
      reinterpret_cast<CronetContextAdapter*>(jcontext_adapter);
  return context_adapter->context_->network_tasks_->default_context_;
}

net::QuicParams& TestUtil::GetDefaultURLRequestQuicParams(
    jlong jcontext_adapter) {
  net::URLRequestContext* context;
  base::WaitableEvent callback_executed;
  CronetContextAdapter& context_adapter =
      *reinterpret_cast<CronetContextAdapter*>(jcontext_adapter);
  RunAfterContextInit(jcontext_adapter, base::BindLambdaForTesting([&] {
                        context =
                            context_adapter.context_->GetURLRequestContext(
                                net::handles::kInvalidNetworkHandle);
                        callback_executed.Signal();
                      }));
  callback_executed.Wait();
  CHECK(context);
  return *context->quic_context()->params();
}

// static
void TestUtil::RunAfterContextInitOnNetworkThread(jlong jcontext_adapter,
                                                  base::OnceClosure task) {
  CronetContextAdapter* context_adapter =
      reinterpret_cast<CronetContextAdapter*>(jcontext_adapter);
  if (context_adapter->context_->network_tasks_
          ->is_default_context_initialized_) {
    std::move(task).Run();
  } else {
    context_adapter->context_->network_tasks_->tasks_waiting_for_context_.push(
        std::move(task));
  }
}

// static
void TestUtil::RunAfterContextInit(jlong jcontext_adapter,
                                   base::OnceClosure task) {
  GetTaskRunner(jcontext_adapter)
      ->PostTask(FROM_HERE,
                 base::BindOnce(&TestUtil::RunAfterContextInitOnNetworkThread,
                                jcontext_adapter, std::move(task)));
}

// static
net::URLRequest* TestUtil::GetURLRequest(jlong jrequest_adapter) {
  CronetURLRequestAdapter* request_adapter =
      reinterpret_cast<CronetURLRequestAdapter*>(jrequest_adapter);
  return request_adapter->request_->network_tasks_.url_request_.get();
}

static void PrepareNetworkThreadOnNetworkThread(jlong jcontext_adapter) {
  g_sequence_manager =
      base::sequence_manager::CreateSequenceManagerOnCurrentThreadWithPump(
          MessagePump::Create(MessagePumpType::IO),
          SequenceManager::Settings::Builder()
              .SetMessagePumpType(MessagePumpType::IO)
              .Build())
          .release();
  g_sequence_manager->SetDefaultTaskRunner(
      TestUtil::GetTaskRunner(jcontext_adapter));
}

// Tests need to call into libcronet.so code on libcronet.so threads.
// libcronet.so's threads are registered with static tables for MessageLoops
// and SingleThreadTaskRunners in libcronet.so, so libcronet_test.so
// functions that try and access these tables will find missing entries in
// the corresponding static tables in libcronet_test.so.  Fix this by
// initializing a MessageLoop and SingleThreadTaskRunner in libcronet_test.so
// for these threads.  Called from Java CronetTestUtil class.
void JNI_CronetTestUtil_PrepareNetworkThread(JNIEnv* env,
                                             jlong jcontext_adapter) {
  TestUtil::GetTaskRunner(jcontext_adapter)
      ->PostTask(FROM_HERE, base::BindOnce(&PrepareNetworkThreadOnNetworkThread,
                                           jcontext_adapter));
}

static void CleanupNetworkThreadOnNetworkThread() {
  DCHECK(g_sequence_manager);
  delete g_sequence_manager;
  g_sequence_manager = nullptr;
}

// Called from Java CronetTestUtil class.
void JNI_CronetTestUtil_CleanupNetworkThread(JNIEnv* env,
                                             jlong jcontext_adapter) {
  TestUtil::RunAfterContextInit(
      jcontext_adapter, base::BindOnce(&CleanupNetworkThreadOnNetworkThread));
}

jboolean JNI_CronetTestUtil_CanGetTaggedBytes(JNIEnv* env) {
  return net::CanGetTaggedBytes();
}

jlong JNI_CronetTestUtil_GetTaggedBytes(JNIEnv* env, jint jexpected_tag) {
  return net::GetTaggedBytes(jexpected_tag);
}

}  // namespace cronet