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// Copyright 2015 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.
#include "net/websockets/websocket_deflate_parameters.h"
#include <string>
#include <vector>
#include "base/macros.h"
#include "net/websockets/websocket_extension_parser.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace net {
namespace {
void CheckExtension(const WebSocketDeflateParameters& params,
const std::string& name,
const std::string& value) {
WebSocketExtension e = params.AsExtension();
EXPECT_EQ("permessage-deflate", e.name());
if (e.parameters().size() != 1)
FAIL() << "parameters must have one element.";
EXPECT_EQ(name, e.parameters()[0].name());
EXPECT_EQ(value, e.parameters()[0].value());
}
TEST(WebSocketDeflateParametersTest, Empty) {
WebSocketDeflateParameters r;
EXPECT_EQ(WebSocketDeflater::TAKE_OVER_CONTEXT,
r.server_context_take_over_mode());
EXPECT_EQ(WebSocketDeflater::TAKE_OVER_CONTEXT,
r.client_context_take_over_mode());
EXPECT_FALSE(r.is_server_max_window_bits_specified());
EXPECT_FALSE(r.is_client_max_window_bits_specified());
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_TRUE(r.IsValidAsResponse());
WebSocketExtension e = r.AsExtension();
EXPECT_EQ("permessage-deflate", e.name());
EXPECT_TRUE(e.parameters().empty());
}
TEST(WebSocketDeflateParametersTest, ServerContextTakeover) {
WebSocketDeflateParameters r;
r.SetServerNoContextTakeOver();
CheckExtension(r, "server_no_context_takeover", "");
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_TRUE(r.IsValidAsResponse());
}
TEST(WebSocketDeflateParametersTest, ClientContextTakeover) {
WebSocketDeflateParameters r;
r.SetClientNoContextTakeOver();
CheckExtension(r, "client_no_context_takeover", "");
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_TRUE(r.IsValidAsResponse());
}
TEST(WebSocketDeflateParametersTest, ServerMaxWindowBits) {
WebSocketDeflateParameters r;
r.SetServerMaxWindowBits(13);
CheckExtension(r, "server_max_window_bits", "13");
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_TRUE(r.IsValidAsResponse());
}
TEST(WebSocketDeflateParametersTest, ClientMaxWindowBitsWithoutValue) {
WebSocketDeflateParameters r;
std::string failure_message;
r.SetClientMaxWindowBits();
CheckExtension(r, "client_max_window_bits", "");
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_FALSE(r.IsValidAsResponse(&failure_message));
EXPECT_EQ("client_max_window_bits must have value", failure_message);
}
TEST(WebSocketDeflateParametersTest, ClientMaxWindowBitsWithValue) {
WebSocketDeflateParameters r;
r.SetClientMaxWindowBits(12);
CheckExtension(r, "client_max_window_bits", "12");
EXPECT_TRUE(r.IsValidAsRequest());
EXPECT_TRUE(r.IsValidAsResponse());
}
struct InitializeTestParameter {
const std::string query;
struct Expectation {
bool result;
std::string failure_message;
} const expected;
};
void PrintTo(const InitializeTestParameter& p, std::ostream* o) {
*o << p.query;
}
class WebSocketDeflateParametersInitializeTest
: public ::testing::TestWithParam<InitializeTestParameter> {};
TEST_P(WebSocketDeflateParametersInitializeTest, Initialize) {
const std::string query = GetParam().query;
const bool expected = GetParam().expected.result;
const std::string expected_failure_message =
GetParam().expected.failure_message;
WebSocketExtensionParser parser;
ASSERT_TRUE(parser.Parse("permessage-deflate" + query));
ASSERT_EQ(1u, parser.extensions().size());
WebSocketExtension extension = parser.extensions()[0];
WebSocketDeflateParameters parameters;
std::string failure_message;
bool actual = parameters.Initialize(extension, &failure_message);
if (expected) {
EXPECT_TRUE(actual);
EXPECT_TRUE(extension.Equals(parameters.AsExtension()));
} else {
EXPECT_FALSE(actual);
}
EXPECT_EQ(expected_failure_message, failure_message);
}
struct CompatibilityTestParameter {
const char* request_query;
const char* response_query;
const bool expected;
};
void PrintTo(const CompatibilityTestParameter& p, std::ostream* o) {
*o << "req = \"" << p.request_query << "\", res = \"" << p.response_query
<< "\"";
}
class WebSocketDeflateParametersCompatibilityTest
: public ::testing::TestWithParam<CompatibilityTestParameter> {};
TEST_P(WebSocketDeflateParametersCompatibilityTest, CheckCompatiblity) {
const std::string request_query = GetParam().request_query;
const std::string response_query = GetParam().response_query;
const bool expected = GetParam().expected;
std::string message;
WebSocketDeflateParameters request, response;
WebSocketExtensionParser request_parser;
ASSERT_TRUE(request_parser.Parse("permessage-deflate" + request_query));
ASSERT_EQ(1u, request_parser.extensions().size());
ASSERT_TRUE(request.Initialize(request_parser.extensions()[0], &message));
ASSERT_TRUE(request.IsValidAsRequest(&message));
WebSocketExtensionParser response_parser;
ASSERT_TRUE(response_parser.Parse("permessage-deflate" + response_query));
ASSERT_EQ(1u, response_parser.extensions().size());
ASSERT_TRUE(response.Initialize(response_parser.extensions()[0], &message));
ASSERT_TRUE(response.IsValidAsResponse(&message));
EXPECT_EQ(expected, request.IsCompatibleWith(response));
}
InitializeTestParameter::Expectation Duplicate(const std::string& name) {
return {false,
"Received duplicate permessage-deflate extension parameter " + name};
}
InitializeTestParameter::Expectation Invalid(const std::string& name) {
return {false, "Received invalid " + name + " parameter"};
}
// We need this function in order to avoid global non-pod variables.
std::vector<InitializeTestParameter> InitializeTestParameters() {
const InitializeTestParameter::Expectation kInitialized = {true, ""};
const InitializeTestParameter::Expectation kUnknownParameter = {
false, "Received an unexpected permessage-deflate extension parameter"};
const InitializeTestParameter parameters[] = {
{"", kInitialized},
{"; server_no_context_takeover", kInitialized},
{"; server_no_context_takeover=0", Invalid("server_no_context_takeover")},
{"; server_no_context_takeover; server_no_context_takeover",
Duplicate("server_no_context_takeover")},
{"; client_no_context_takeover", kInitialized},
{"; client_no_context_takeover=0", Invalid("client_no_context_takeover")},
{"; client_no_context_takeover; client_no_context_takeover",
Duplicate("client_no_context_takeover")},
{"; server_max_window_bits=8", kInitialized},
{"; server_max_window_bits=15", kInitialized},
{"; server_max_window_bits=15; server_max_window_bits=15",
Duplicate("server_max_window_bits")},
{"; server_max_window_bits=a", Invalid("server_max_window_bits")},
{"; server_max_window_bits=09", Invalid("server_max_window_bits")},
{"; server_max_window_bits=+9", Invalid("server_max_window_bits")},
{"; server_max_window_bits=9a", Invalid("server_max_window_bits")},
{"; server_max_window_bits", Invalid("server_max_window_bits")},
{"; server_max_window_bits=7", Invalid("server_max_window_bits")},
{"; server_max_window_bits=16", Invalid("server_max_window_bits")},
{"; client_max_window_bits=8", kInitialized},
{"; client_max_window_bits=15", kInitialized},
{"; client_max_window_bits=15; client_max_window_bits=15",
Duplicate("client_max_window_bits")},
{"; client_max_window_bits=a", Invalid("client_max_window_bits")},
{"; client_max_window_bits=09", Invalid("client_max_window_bits")},
{"; client_max_window_bits=+9", Invalid("client_max_window_bits")},
{"; client_max_window_bits=9a", Invalid("client_max_window_bits")},
{"; client_max_window_bits", kInitialized},
{"; client_max_window_bits=7", Invalid("client_max_window_bits")},
{"; client_max_window_bits=16", Invalid("client_max_window_bits")},
{"; server_no_context_takeover; client_no_context_takeover"
"; server_max_window_bits=12; client_max_window_bits=13",
kInitialized},
{"; hogefuga", kUnknownParameter},
};
return std::vector<InitializeTestParameter>(
parameters, parameters + arraysize(parameters));
}
const CompatibilityTestParameter kCompatibilityTestParameters[] = {
{"", "", true},
// server_no_context_takeover
{"", "; server_no_context_takeover", true},
{"; server_no_context_takeover", "", false},
{"; server_no_context_takeover", "; server_no_context_takeover", true},
// client_no_context_takeover
{"", "; client_no_context_takeover", true},
{"; client_no_context_takeover", "", true},
{"; client_no_context_takeover", "; client_no_context_takeover", true},
// server_max_window_bits
{"", "; server_max_window_bits=14", true},
{"; server_max_window_bits=12", "", false},
{"; server_max_window_bits=12", "; server_max_window_bits=12", true},
{"; server_max_window_bits=12", "; server_max_window_bits=11", true},
{"; server_max_window_bits=12", "; server_max_window_bits=13", false},
// client_max_window_bits
{"", "; client_max_window_bits=14", false},
{"; client_max_window_bits", "", true},
{"; client_max_window_bits", "; client_max_window_bits=15", true},
{"; client_max_window_bits=12", "", true},
{"; client_max_window_bits=12", "; client_max_window_bits=12", true},
{"; client_max_window_bits=12", "; client_max_window_bits=11", true},
{"; client_max_window_bits=12", "; client_max_window_bits=13", true},
};
INSTANTIATE_TEST_CASE_P(WebSocketDeflateParametersInitializeTest,
WebSocketDeflateParametersInitializeTest,
::testing::ValuesIn(InitializeTestParameters()));
INSTANTIATE_TEST_CASE_P(WebSocketDeflateParametersCompatibilityTest,
WebSocketDeflateParametersCompatibilityTest,
::testing::ValuesIn(kCompatibilityTestParameters));
} // namespace
} // namespace net