text: /*
      __ _____ _____ _____
   __|  |   __|     |   | |  JSON for Modern C++ (test suite)
  |  |  |__   |  |  | | | |  version 2.1.1
  |_____|_____|_____|_|___|  https://github.com/nlohmann/json
  
  Licensed under the MIT License <http://opensource.org/licenses/MIT>.
  Copyright (c) 2013-2017 Niels Lohmann <http://nlohmann.me>.
  
  Permission is hereby  granted, free of charge, to any  person obtaining a copy
  of this software and associated  documentation files (the "Software"), to deal
  in the Software  without restriction, including without  limitation the rights
  to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
  copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
  furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
  
  THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
  IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
  FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
  AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
  LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
  SOFTWARE.
  */
  
  #include "catch.hpp"
  
  #include "json.hpp"
  using nlohmann::json;
  
  #include <fstream>
  
  TEST_CASE("compliance tests from json.org")
  {
      // test cases are from http://json.org/JSON_checker/
  
      SECTION("expected failures")
      {
          for (auto filename :
                  {
                      //"test/data/json_tests/fail1.json",
                      "test/data/json_tests/fail2.json",
                      "test/data/json_tests/fail3.json",
                      "test/data/json_tests/fail4.json",
                      "test/data/json_tests/fail5.json",
                      "test/data/json_tests/fail6.json",
                      "test/data/json_tests/fail7.json",
                      "test/data/json_tests/fail8.json",
                      "test/data/json_tests/fail9.json",
                      "test/data/json_tests/fail10.json",
                      "test/data/json_tests/fail11.json",
                      "test/data/json_tests/fail12.json",
                      "test/data/json_tests/fail13.json",
                      "test/data/json_tests/fail14.json",
                      "test/data/json_tests/fail15.json",
                      "test/data/json_tests/fail16.json",
                      "test/data/json_tests/fail17.json",
                      //"test/data/json_tests/fail18.json",
                      "test/data/json_tests/fail19.json",
                      "test/data/json_tests/fail20.json",
                      "test/data/json_tests/fail21.json",
                      "test/data/json_tests/fail22.json",
                      "test/data/json_tests/fail23.json",
                      "test/data/json_tests/fail24.json",
                      "test/data/json_tests/fail25.json",
                      "test/data/json_tests/fail26.json",
                      "test/data/json_tests/fail27.json",
                      "test/data/json_tests/fail28.json",
                      "test/data/json_tests/fail29.json",
                      "test/data/json_tests/fail30.json",
                      "test/data/json_tests/fail31.json",
                      "test/data/json_tests/fail32.json",
                      "test/data/json_tests/fail33.json"
                  })
          {
              CAPTURE(filename);
              std::ifstream f(filename);
              CHECK_THROWS_AS(json::parse(f), json::parse_error&);
          }
      }
  
      SECTION("no failures with trailing literals (relaxed)")
      {
          // these tests fail above, because the parser does not end on EOF;
          // they succeed when the operator>> is used, because it does not
          // have this constraint
          for (auto filename :
                  {
                      "test/data/json_tests/fail7.json",
                      "test/data/json_tests/fail8.json",
                      "test/data/json_tests/fail10.json",
                  })
          {
              CAPTURE(filename);
              std::ifstream f(filename);
              json j;
              CHECK_NOTHROW(f >> j);
          }
      }
  
      SECTION("expected passes")
      {
          for (auto filename :
                  {
                      "test/data/json_tests/pass1.json",
                      "test/data/json_tests/pass2.json",
                      "test/data/json_tests/pass3.json"
                  })
          {
              CAPTURE(filename);
              std::ifstream f(filename);
              json j;
              CHECK_NOTHROW(f >> j);
          }
      }
  }
  
  TEST_CASE("compliance tests from nativejson-benchmark")
  {
      // test cases from https://github.com/miloyip/nativejson-benchmark/blob/master/src/main.cpp
  
      SECTION("doubles")
      {
          auto TEST_DOUBLE = [](const std::string & json_string, const double expected)
          {
              CAPTURE(json_string);
              CAPTURE(expected);
              CHECK(json::parse(json_string)[0].get<double>() == Approx(expected));
          };
  
          TEST_DOUBLE("[0.0]", 0.0);
          TEST_DOUBLE("[-0.0]", -0.0);
          TEST_DOUBLE("[1.0]", 1.0);
          TEST_DOUBLE("[-1.0]", -1.0);
          TEST_DOUBLE("[1.5]", 1.5);
          TEST_DOUBLE("[-1.5]", -1.5);
          TEST_DOUBLE("[3.1416]", 3.1416);
          TEST_DOUBLE("[1E10]", 1E10);
          TEST_DOUBLE("[1e10]", 1e10);
          TEST_DOUBLE("[1E+10]", 1E+10);
          TEST_DOUBLE("[1E-10]", 1E-10);
          TEST_DOUBLE("[-1E10]", -1E10);
          TEST_DOUBLE("[-1e10]", -1e10);
          TEST_DOUBLE("[-1E+10]", -1E+10);
          TEST_DOUBLE("[-1E-10]", -1E-10);
          TEST_DOUBLE("[1.234E+10]", 1.234E+10);
          TEST_DOUBLE("[1.234E-10]", 1.234E-10);
          TEST_DOUBLE("[1.79769e+308]", 1.79769e+308);
          TEST_DOUBLE("[2.22507e-308]", 2.22507e-308);
          TEST_DOUBLE("[-1.79769e+308]", -1.79769e+308);
          TEST_DOUBLE("[-2.22507e-308]", -2.22507e-308);
          TEST_DOUBLE("[4.9406564584124654e-324]", 4.9406564584124654e-324); // minimum denormal
          TEST_DOUBLE("[2.2250738585072009e-308]", 2.2250738585072009e-308); // Max subnormal double
          TEST_DOUBLE("[2.2250738585072014e-308]", 2.2250738585072014e-308); // Min normal positive double
          TEST_DOUBLE("[1.7976931348623157e+308]", 1.7976931348623157e+308); // Max double
          TEST_DOUBLE("[1e-10000]", 0.0);                                   // must underflow
          TEST_DOUBLE("[18446744073709551616]",
                      18446744073709551616.0);    // 2^64 (max of uint64_t + 1, force to use double)
          TEST_DOUBLE("[-9223372036854775809]",
                      -9223372036854775809.0);    // -2^63 - 1(min of int64_t + 1, force to use double)
          TEST_DOUBLE("[0.9868011474609375]",
                      0.9868011474609375);          // https://github.com/miloyip/rapidjson/issues/120
          TEST_DOUBLE("[123e34]", 123e34);                                  // Fast Path Cases In Disguise
          TEST_DOUBLE("[45913141877270640000.0]", 45913141877270640000.0);
          TEST_DOUBLE("[2.2250738585072011e-308]",
                      2.2250738585072011e-308);
          //TEST_DOUBLE("[1e-00011111111111]", 0.0);
          //TEST_DOUBLE("[-1e-00011111111111]", -0.0);
          TEST_DOUBLE("[1e-214748363]", 0.0);
          TEST_DOUBLE("[1e-214748364]", 0.0);
          //TEST_DOUBLE("[1e-21474836311]", 0.0);
          TEST_DOUBLE("[0.017976931348623157e+310]", 1.7976931348623157e+308); // Max double in another form
  
          // Since
          // abs((2^-1022 - 2^-1074) - 2.2250738585072012e-308) = 3.109754131239141401123495768877590405345064751974375599... ¡Á 10^-324
          // abs((2^-1022) - 2.2250738585072012e-308) = 1.830902327173324040642192159804623318305533274168872044... ¡Á 10 ^ -324
          // So 2.2250738585072012e-308 should round to 2^-1022 = 2.2250738585072014e-308
          TEST_DOUBLE("[2.2250738585072012e-308]",
                      2.2250738585072014e-308);
  
          // More closer to normal/subnormal boundary
          // boundary = 2^-1022 - 2^-1075 = 2.225073858507201136057409796709131975934819546351645648... ¡Á 10^-308
          TEST_DOUBLE("[2.22507385850720113605740979670913197593481954635164564e-308]",
                      2.2250738585072009e-308);
          TEST_DOUBLE("[2.22507385850720113605740979670913197593481954635164565e-308]",
                      2.2250738585072014e-308);
  
          // 1.0 is in (1.0 - 2^-54, 1.0 + 2^-53)
          // 1.0 - 2^-54 = 0.999999999999999944488848768742172978818416595458984375
          TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984375]", 1.0); // round to even
          TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984374]",
                      0.99999999999999989); // previous double
          TEST_DOUBLE("[0.999999999999999944488848768742172978818416595458984376]", 1.0); // next double
          // 1.0 + 2^-53 = 1.00000000000000011102230246251565404236316680908203125
          TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203125]", 1.0); // round to even
          TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203124]", 1.0); // previous double
          TEST_DOUBLE("[1.00000000000000011102230246251565404236316680908203126]",
                      1.00000000000000022); // next double
  
          // Numbers from https://github.com/floitsch/double-conversion/blob/master/test/cctest/test-strtod.cc
  
          TEST_DOUBLE("[72057594037927928.0]", 72057594037927928.0);
          TEST_DOUBLE("[72057594037927936.0]", 72057594037927936.0);
          TEST_DOUBLE("[72057594037927932.0]", 72057594037927936.0);
          TEST_DOUBLE("[7205759403792793199999e-5]", 72057594037927928.0);
          TEST_DOUBLE("[7205759403792793200001e-5]", 72057594037927936.0);
  
          TEST_DOUBLE("[9223372036854774784.0]", 9223372036854774784.0);
          TEST_DOUBLE("[9223372036854775808.0]", 9223372036854775808.0);
          TEST_DOUBLE("[9223372036854775296.0]", 9223372036854775808.0);
          TEST_DOUBLE("[922337203685477529599999e-5]", 9223372036854774784.0);
          TEST_DOUBLE("[922337203685477529600001e-5]", 9223372036854775808.0);
  
          TEST_DOUBLE("[10141204801825834086073718800384]", 10141204801825834086073718800384.0);
          TEST_DOUBLE("[10141204801825835211973625643008]", 10141204801825835211973625643008.0);
          TEST_DOUBLE("[10141204801825834649023672221696]", 10141204801825835211973625643008.0);
          TEST_DOUBLE("[1014120480182583464902367222169599999e-5]", 10141204801825834086073718800384.0);
          TEST_DOUBLE("[1014120480182583464902367222169600001e-5]", 10141204801825835211973625643008.0);
  
          TEST_DOUBLE("[5708990770823838890407843763683279797179383808]",
                      5708990770823838890407843763683279797179383808.0);
          TEST_DOUBLE("[5708990770823839524233143877797980545530986496]",
                      5708990770823839524233143877797980545530986496.0);
          TEST_DOUBLE("[5708990770823839207320493820740630171355185152]",
                      5708990770823839524233143877797980545530986496.0);
          TEST_DOUBLE("[5708990770823839207320493820740630171355185151999e-3]",
                      5708990770823838890407843763683279797179383808.0);
          TEST_DOUBLE("[5708990770823839207320493820740630171355185152001e-3]",
                      5708990770823839524233143877797980545530986496.0);
  
          {
              char n1e308[312];   // '1' followed by 308 '0'
              n1e308[0] = '[';
              n1e308[1] = '1';
              for (int j = 2; j < 310; j++)
              {
                  n1e308[j] = '0';
              }
              n1e308[310] = ']';
              n1e308[311] = '\0';
              TEST_DOUBLE(n1e308, 1E308);
          }
  
          // Cover trimming
          TEST_DOUBLE(
              "[2.22507385850720113605740979670913197593481954635164564802342610972482222202107694551652952390813508"
              "7914149158913039621106870086438694594645527657207407820621743379988141063267329253552286881372149012"
              "9811224514518898490572223072852551331557550159143974763979834118019993239625482890171070818506906306"
              "6665599493827577257201576306269066333264756530000924588831643303777979186961204949739037782970490505"
              "1080609940730262937128958950003583799967207254304360284078895771796150945516748243471030702609144621"
              "5722898802581825451803257070188608721131280795122334262883686223215037756666225039825343359745688844"
              "2390026549819838548794829220689472168983109969836584681402285424333066033985088644580400103493397042"
              "7567186443383770486037861622771738545623065874679014086723327636718751234567890123456789012345678901"
              "e-308]",
              2.2250738585072014e-308);
      }
  
      SECTION("strings")
      {
          auto TEST_STRING = [](const std::string & json_string, const std::string & expected)
          {
              CAPTURE(json_string);
              CAPTURE(expected);
              CHECK(json::parse(json_string)[0].get<std::string>() == expected);
          };
  
          TEST_STRING("[\"\"]", "");
          TEST_STRING("[\"Hello\"]", "Hello");
          TEST_STRING("[\"Hello\\nWorld\"]", "Hello\nWorld");
          //TEST_STRING("[\"Hello\\u0000World\"]", "Hello\0World");
          TEST_STRING("[\"\\\"\\\\/\\b\\f\\n\\r\\t\"]", "\"\\/\b\f\n\r\t");
          TEST_STRING("[\"\\u0024\"]", "\x24");         // Dollar sign U+0024
          TEST_STRING("[\"\\u00A2\"]", "\xC2\xA2");     // Cents sign U+00A2
          TEST_STRING("[\"\\u20AC\"]", "\xE2\x82\xAC"); // Euro sign U+20AC
          TEST_STRING("[\"\\uD834\\uDD1E\"]", "\xF0\x9D\x84\x9E");  // G clef sign U+1D11E
      }
  
      SECTION("roundtrip")
      {
          // test cases are from https://github.com/miloyip/nativejson-benchmark/tree/master/test/data/roundtrip
  
          for (auto filename :
                  {
                      "test/data/json_roundtrip/roundtrip01.json",
                      "test/data/json_roundtrip/roundtrip02.json",
                      "test/data/json_roundtrip/roundtrip03.json",
                      "test/data/json_roundtrip/roundtrip04.json",
                      "test/data/json_roundtrip/roundtrip05.json",
                      "test/data/json_roundtrip/roundtrip06.json",
                      "test/data/json_roundtrip/roundtrip07.json",
                      "test/data/json_roundtrip/roundtrip08.json",
                      "test/data/json_roundtrip/roundtrip09.json",
                      "test/data/json_roundtrip/roundtrip10.json",
                      "test/data/json_roundtrip/roundtrip11.json",
                      "test/data/json_roundtrip/roundtrip12.json",
                      "test/data/json_roundtrip/roundtrip13.json",
                      "test/data/json_roundtrip/roundtrip14.json",
                      "test/data/json_roundtrip/roundtrip15.json",
                      "test/data/json_roundtrip/roundtrip16.json",
                      "test/data/json_roundtrip/roundtrip17.json",
                      "test/data/json_roundtrip/roundtrip18.json",
                      "test/data/json_roundtrip/roundtrip19.json",
                      "test/data/json_roundtrip/roundtrip20.json",
                      "test/data/json_roundtrip/roundtrip21.json",
                      "test/data/json_roundtrip/roundtrip22.json",
                      "test/data/json_roundtrip/roundtrip23.json",
                      //"test/data/json_roundtrip/roundtrip24.json", // roundtrip error
                      //"test/data/json_roundtrip/roundtrip25.json", // roundtrip error
                      //"test/data/json_roundtrip/roundtrip26.json", // roundtrip error
                      //"test/data/json_roundtrip/roundtrip27.json", // roundtrip error
                      //"test/data/json_roundtrip/roundtrip28.json", // roundtrip error
                      "test/data/json_roundtrip/roundtrip29.json",
                      //"test/data/json_roundtrip/roundtrip30.json", // roundtrip error
                      //"test/data/json_roundtrip/roundtrip31.json", // roundtrip error
                      "test/data/json_roundtrip/roundtrip32.json"
                  })
          {
              CAPTURE(filename);
              std::ifstream f(filename);
              std::string json_string( (std::istreambuf_iterator<char>(f) ),
                                       (std::istreambuf_iterator<char>()) );
  
              CAPTURE(json_string);
              json j = json::parse(json_string);
              CHECK(j.dump() == json_string);
          }
      }
  }
  
  TEST_CASE("test suite from json-test-suite")
  {
      SECTION("read all sample.json")
      {
          // read a file with all unicode characters stored as single-character
          // strings in a JSON array
          std::ifstream f("test/data/json_testsuite/sample.json");
          json j;
          CHECK_NOTHROW(f >> j);
  
          // the array has 3 elements
          CHECK(j.size() == 3);
      }
  }
  
  TEST_CASE("json.org examples")
  {
      // here, we list all JSON values from http://json.org/example
  
      SECTION("1.json")
      {
          std::ifstream f("test/data/json.org/1.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  
      SECTION("2.json")
      {
          std::ifstream f("test/data/json.org/2.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  
      SECTION("3.json")
      {
          std::ifstream f("test/data/json.org/3.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  
      SECTION("4.json")
      {
          std::ifstream f("test/data/json.org/4.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  
      SECTION("5.json")
      {
          std::ifstream f("test/data/json.org/5.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  }
  
  TEST_CASE("RFC 7159 examples")
  {
      // here, we list all JSON values from the RFC 7159 document
  
      SECTION("7. Strings")
      {
          CHECK(json::parse("\"\\u005C\"") == json("\\"));
          CHECK(json::parse("\"\\uD834\\uDD1E\"") == json("𝄞"));
          CHECK(json::parse("\"𝄞\"") == json("𝄞"));
      }
  
      SECTION("8.3 String Comparison")
      {
          CHECK(json::parse("\"a\\b\"") == json::parse("\"a\u005Cb\""));
      }
  
      SECTION("13 Examples")
      {
          {
              CHECK_NOTHROW(json(R"(
              {
                   "Image": {
                       "Width":  800,
                       "Height": 600,
                       "Title":  "View from 15th Floor",
                       "Thumbnail": {
                           "Url":    "http://www.example.com/image/481989943",
                           "Height": 125,
                           "Width":  100
                       },
                       "Animated" : false,
                       "IDs": [116, 943, 234, 38793]
                     }
                 }
              )"));
          }
  
          {
              CHECK_NOTHROW(json(R"(
                  [
                      {
                         "precision": "zip",
                         "Latitude":  37.7668,
                         "Longitude": -122.3959,
                         "Address":   "",
                         "City":      "SAN FRANCISCO",
                         "State":     "CA",
                         "Zip":       "94107",
                         "Country":   "US"
                      },
                      {
                         "precision": "zip",
                         "Latitude":  37.371991,
                         "Longitude": -122.026020,
                         "Address":   "",
                         "City":      "SUNNYVALE",
                         "State":     "CA",
                         "Zip":       "94085",
                         "Country":   "US"
                      }
              ])"));
          }
  
          CHECK(json::parse("\"Hello world!\"") == json("Hello world!"));
          CHECK(json::parse("42") == json(42));
          CHECK(json::parse("true") == json(true));
      }
  }
  
  TEST_CASE("nst's JSONTestSuite")
  {
      SECTION("test_parsing")
      {
          SECTION("y")
          {
              for (auto filename :
                      {
                          "test/data/nst_json_testsuite/test_parsing/y_array_arraysWithSpaces.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_empty-string.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_empty.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_ending_with_newline.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_false.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_heterogeneous.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_null.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_with_1_and_newline.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_with_leading_space.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_with_several_null.json",
                          "test/data/nst_json_testsuite/test_parsing/y_array_with_trailing_space.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_0e+1.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_0e1.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_after_space.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_double_close_to_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_double_huge_neg_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_int_with_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_minus_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_negative_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_negative_one.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_negative_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_capital_e.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_capital_e_neg_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_capital_e_pos_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_exponent.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_fraction_exponent.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_neg_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_pos_exponent.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_underflow.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_simple_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_simple_real.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_too_big_neg_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_too_big_pos_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_very_big_negative_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_basic.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_duplicated_key.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_duplicated_key_and_value.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_empty.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_empty_key.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_escaped_null_in_key.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_extreme_numbers.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_long_strings.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_simple.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_string_unicode.json",
                          "test/data/nst_json_testsuite/test_parsing/y_object_with_newlines.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_1_2_3_bytes_UTF-8_sequences.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_UTF-16_Surrogates_U+1D11E_MUSICAL_SYMBOL_G_CLEF.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pair.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_accepted_surrogate_pairs.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_allowed_escapes.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_backslash_and_u_escaped_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_backslash_doublequotes.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_comments.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_double_escape_a.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_double_escape_n.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_escaped_control_character.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_escaped_noncharacter.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_in_array.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_in_array_with_leading_space.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_last_surrogates_1_and_2.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_newline_uescaped.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+10FFFF.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+1FFFF.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_nonCharacterInUTF-8_U+FFFF.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_null_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_one-byte-utf-8.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_pi.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_simple_ascii.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_space.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_three-byte-utf-8.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_two-byte-utf-8.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_u+2028_line_sep.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_u+2029_par_sep.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_uEscape.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unescaped_char_delete.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicode.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicodeEscapedBackslash.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicode_2.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicode_U+200B_ZERO_WIDTH_SPACE.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicode_U+2064_invisible_plus.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_unicode_escaped_double_quote.json",
                          // "test/data/nst_json_testsuite/test_parsing/y_string_utf16.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_utf8.json",
                          "test/data/nst_json_testsuite/test_parsing/y_string_with_del_character.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_false.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_int.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_negative_real.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_null.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_string.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_lonely_true.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_string_empty.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_trailing_newline.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_true_in_array.json",
                          "test/data/nst_json_testsuite/test_parsing/y_structure_whitespace_array.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  json j;
                  CHECK_NOTHROW(f >> j);
              }
          }
  
          SECTION("n")
          {
              for (auto filename :
                      {
                          "test/data/nst_json_testsuite/test_parsing/n_array_1_true_without_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_a_invalid_utf8.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_colon_instead_of_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_comma_after_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_comma_and_number.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_double_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_double_extra_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_extra_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_extra_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_incomplete.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_incomplete_invalid_value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_inner_array_no_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_invalid_utf8.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_items_separated_by_semicolon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_just_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_just_minus.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_missing_value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_newlines_unclosed.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_number_and_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_number_and_several_commas.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_spaces_vertical_tab_formfeed.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_star_inside.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_unclosed.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_unclosed_trailing_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_unclosed_with_new_lines.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_unclosed_with_object_inside.json",
                          "test/data/nst_json_testsuite/test_parsing/n_incomplete_false.json",
                          "test/data/nst_json_testsuite/test_parsing/n_incomplete_null.json",
                          "test/data/nst_json_testsuite/test_parsing/n_incomplete_true.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_++.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_+1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_+Inf.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_-01.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_-1.0..json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_-2..json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_-NaN.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_.-1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_.2e-3.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0.1.2.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0.3e+.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0.3e.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0.e1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0_capital_E+.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0_capital_E.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0e+.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_0e.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_1.0e+.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_1.0e-.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_1.0e.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_1_000.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_1eE2.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_2.e+3.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_2.e-3.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_2.e3.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_9.e+.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_Inf.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_NaN.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_U+FF11_fullwidth_digit_one.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_expression.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_hex_1_digit.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_hex_2_digits.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_infinity.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_invalid+-.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_invalid-negative-real.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-bigger-int.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-exponent.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_invalid-utf-8-in-int.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_minus_infinity.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_minus_sign_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_minus_space_1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_neg_int_starting_with_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_neg_real_without_int_part.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_neg_with_garbage_at_end.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_real_garbage_after_e.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_real_with_invalid_utf8_after_e.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_real_without_fractional_part.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_starting_with_dot.json",
                          //"test/data/nst_json_testsuite/test_parsing/n_number_then_00.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_with_alpha.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_with_alpha_char.json",
                          "test/data/nst_json_testsuite/test_parsing/n_number_with_leading_zero.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_bad_value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_bracket_key.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_comma_instead_of_colon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_double_colon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_emoji.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_garbage_at_end.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_key_with_single_quotes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_missing_colon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_missing_key.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_missing_semicolon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_missing_value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_no-colon.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_non_string_key.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_non_string_key_but_huge_number_instead.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_pi_in_key_and_trailing_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_repeated_null_null.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_several_trailing_commas.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_single_quote.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_open.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open_incomplete.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_two_commas_in_a_row.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_unquoted_key.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_unterminated-value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_with_single_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_single_space.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape u1x.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_1_surrogate_then_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_UTF-16_incomplete_surrogate.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_UTF8_surrogate_U+D800.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_accentuated_char_no_quotes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_backslash_00.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_escape_x.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_escaped_backslash_bad.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_escaped_ctrl_char_tab.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_escaped_emoji.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_incomplete_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_incomplete_escaped_character.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_incomplete_surrogate_escape_invalid.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_invalid-utf-8-in-escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_invalid_backslash_esc.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_invalid_unicode_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_invalid_utf-8.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_invalid_utf8_after_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_iso_latin_1.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_leading_uescaped_thinspace.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_lone_utf8_continuation_byte.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_no_quotes_with_bad_escape.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_overlong_sequence_2_bytes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_overlong_sequence_6_bytes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_overlong_sequence_6_bytes_null.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_single_doublequote.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_single_quote.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_single_string_no_double_quotes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_start_escape_unclosed.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_unescaped_crtl_char.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_unescaped_newline.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_unescaped_tab.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_unicode_CapitalU.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_with_trailing_garbage.json",
                          //!"test/data/nst_json_testsuite/test_parsing/n_structure_100000_opening_arrays.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_3C.3E.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_3Cnull3E.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_U+2060_word_joined.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_UTF8_BOM_no_data.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_array_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_array_with_extra_array_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_array_with_unclosed_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_ascii-unicode-identifier.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_capitalized_True.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_close_unopened_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_comma_instead_of_closing_brace.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_double_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_end_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_incomplete_UTF8_BOM.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_lone-invalid-utf-8.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_lone-open-bracket.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_no_data.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_null-byte-outside-string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_number_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_followed_by_closing_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_unclosed_no_value.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_with_comment.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_array_apostrophe.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_array_comma.json",
                          //!"test/data/nst_json_testsuite/test_parsing/n_structure_open_array_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_array_open_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_array_open_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_array_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object_close_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object_comma.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object_open_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object_open_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_object_string_with_apostrophes.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_open_open.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_single_point.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_single_star.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_trailing_#.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_uescaped_LF_before_string.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unclosed_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unclosed_array_partial_null.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unclosed_array_unfinished_false.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unclosed_array_unfinished_true.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unclosed_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_unicode-identifier.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_whitespace_U+2060_word_joiner.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_whitespace_formfeed.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  CHECK_THROWS_AS(json::parse(f), json::parse_error&);
              }
          }
  
          SECTION("n -> y (relaxed)")
          {
              // these tests fail above, because the parser does not end on EOF;
              // they succeed when the operator>> is used, because it does not
              // have this constraint
              for (auto filename :
                      {
                          "test/data/nst_json_testsuite/test_parsing/n_array_comma_after_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_array_extra_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_open.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_trailing_comment_slash_open_incomplete.json",
                          "test/data/nst_json_testsuite/test_parsing/n_object_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_string_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_array_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_array_with_extra_array_close.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_close_unopened_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_double_array.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_number_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_followed_by_closing_object.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_object_with_trailing_garbage.json",
                          "test/data/nst_json_testsuite/test_parsing/n_structure_trailing_#.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  json j;
                  CHECK_NOTHROW(f >> j);
              }
          }
  
          SECTION("i -> y")
          {
              for (auto filename :
                      {
                          // we do not pose a limit on nesting
                          "test/data/nst_json_testsuite/test_parsing/i_structure_500_nested_arrays.json",
                          // we silently ignore BOMs
                          "test/data/nst_json_testsuite/test_parsing/i_structure_UTF-8_BOM_empty_object.json",
                          // we accept and forward non-characters
                          "test/data/nst_json_testsuite/test_parsing/i_string_unicode_U+10FFFE_nonchar.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_unicode_U+1FFFE_nonchar.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_unicode_U+FDD0_nonchar.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_unicode_U+FFFE_nonchar.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  json j;
                  CHECK_NOTHROW(f >> j);
              }
          }
  
          // numbers that overflow during parsing
          SECTION("i/y -> n (out of range)")
          {
              for (auto filename :
                      {
                          "test/data/nst_json_testsuite/test_parsing/i_number_neg_int_huge_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/i_number_pos_double_huge_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_huge_exp.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_neg_overflow.json",
                          "test/data/nst_json_testsuite/test_parsing/y_number_real_pos_overflow.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  json j;
                  CHECK_THROWS_AS(f >> j, json::out_of_range&);
              }
          }
  
          SECTION("i -> n")
          {
              for (auto filename :
                      {
                          "test/data/nst_json_testsuite/test_parsing/i_object_key_lone_2nd_surrogate.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_1st_surrogate_but_2nd_missing.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_1st_valid_surrogate_2nd_invalid.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_UTF-16_invalid_lonely_surrogate.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_UTF-16_invalid_surrogate.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_UTF-8_invalid_sequence.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_incomplete_surrogate_and_escape_valid.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_incomplete_surrogate_pair.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_incomplete_surrogates_escape_valid.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_inverted_surrogates_U+1D11E.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_lone_second_surrogate.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_not_in_unicode_range.json",
                          "test/data/nst_json_testsuite/test_parsing/i_string_truncated-utf-8.json"
                      }
                  )
              {
                  CAPTURE(filename);
                  std::ifstream f(filename);
                  json j;
                  CHECK_THROWS_AS(f >> j, json::parse_error&);
              }
          }
      }
  }
  
  std::string trim(const std::string& str);
  
  // from http://stackoverflow.com/a/25829178/266378
  std::string trim(const std::string& str)
  {
      size_t first = str.find_first_not_of(' ');
      if (std::string::npos == first)
      {
          return str;
      }
      size_t last = str.find_last_not_of(' ');
      return str.substr(first, (last - first + 1));
  }
  
  TEST_CASE("Big List of Naughty Strings")
  {
      // test from https://github.com/minimaxir/big-list-of-naughty-strings
      SECTION("parsing blns.json")
      {
          std::ifstream f("test/data/big-list-of-naughty-strings/blns.json");
          json j;
          CHECK_NOTHROW(f >> j);
      }
  
      // check if parsed strings roundtrip
      // https://www.reddit.com/r/cpp/comments/5qpbie/json_form_modern_c_version_210/dd12mpq/
      SECTION("roundtripping")
      {
          std::ifstream f("test/data/big-list-of-naughty-strings/blns.json");
  
          while (not f.eof())
          {
              // read line
              std::string line;
              getline(f, line);
  
              // trim whitespace
              line = trim(line);
  
              // remove trailing comma
              line = line.substr(0, line.find_last_of(","));
  
              // discard lines without at least two characters (quotes)
              if (line.size() < 2)
              {
                  continue;
              }
  
              // check roundtrip
              CAPTURE(line);
              json j = json::parse(line);
              CHECK(j.dump() == line);
          }
      }
  }
  