src/security_headers_middleware_test.cpp

#include <security_headers_middleware.hpp>
#include <crow/app.h>
#include <gtest/gtest.h>
#include <gmock/gmock.h>

using namespace crow;
using namespace std;

// Tests that the security headers are added correctly
TEST(SecurityHeaders, TestHeadersExist) {
  App<SecurityHeadersMiddleware> app;
  app.bindaddr("127.0.0.1").port(45451);
  CROW_ROUTE(app, "/")([]() { return 200; });
  auto _ = async(launch::async, [&] { app.run(); });

  asio::io_service is;
  std::array<char, 2048> buf;
  std::string sendmsg;

  {
    // Retry a couple of times waiting for the server to come up
    // TODO(ed)  This is really unfortunate, and should use some form of mock
    asio::ip::tcp::socket c(is);
    for (int i = 0; i < 200; i++) {
      try {
        c.connect(asio::ip::tcp::endpoint(
            asio::ip::address::from_string("127.0.0.1"), 45451));
        c.close();
        break;
      } catch (std::exception e) {
        // do nothing.  We expect this to fail while the server is starting up
      }
    }
  }

  // Test correct login credentials
  sendmsg = "GET /\r\n\r\n";

  asio::ip::tcp::socket c(is);
  c.connect(asio::ip::tcp::endpoint(asio::ip::address::from_string("127.0.0.1"),
                                    45451));
  c.send(asio::buffer(sendmsg));
  c.receive(asio::buffer(buf));
  c.close();
  auto return_code = std::string(&buf[9], &buf[12]);
  EXPECT_EQ("200", return_code);
  std::string response(std::begin(buf), std::end(buf));

  // This is a routine to split strings until a blank is hit
  // TODO(ed) this should really use the HTTP parser
  std::vector<std::string> headers;
  std::string::size_type pos = 0;
  std::string::size_type prev = 0;
  while ((pos = response.find("\r\n", prev)) != std::string::npos) {
    auto this_string = response.substr(prev, pos - prev);
    if (this_string == "") {
      break;
    }
    headers.push_back(this_string);
    prev = pos + 2;
  }
  headers.push_back(response.substr(prev));

  EXPECT_EQ(headers[0], "HTTP/1.1 200 OK");
  EXPECT_THAT(headers, ::testing::Contains("Strict-Transport-Security: "
                                           "max-age=31536000; "
                                           "includeSubdomains; preload"));
  EXPECT_THAT(headers, ::testing::Contains("X-UA-Compatible: IE=11"));
  EXPECT_THAT(headers, ::testing::Contains("X-Frame-Options: DENY"));
  EXPECT_THAT(headers, ::testing::Contains("X-XSS-Protection: 1; mode=block"));
  EXPECT_THAT(headers, ::testing::Contains(
                           "X-Content-Security-Policy: default-src 'self'"));
  app.stop();
}