cpp-json/test/json_binder_collection.t.h

//
//  json_binder_collection.t.h
//  json
//
//  Created by Sam Jaffe on 2/27/17.
//

#pragma once

#include <cxxtest/TestSuite.h>
#include "json/json_binder.hpp"

using namespace json::binder;
using namespace json::parser;

class json_binder_collection_TestSuite : public CxxTest::TestSuite {
public:
  void test_vector_parsing() {
    char data[] = "[ 0, 1, 2 ]";
    using collect = std::vector<int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS_NOTHING(parse(json::binder::bind(out, binder), data, allow_all));
    TS_ASSERT_EQUALS(out, collect({0, 1, 2}));
  }
  
  void test_vector_throws_if_array_unterminated() {
    char data[] = "[ 0, 1";
    using collect = std::vector<int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS(parse(json::binder::bind(out, binder), data, allow_all),
                     json::unterminated_json_exception);
  }
  
  void test_vector_throws_if_array_unstarted() {
    char data[] = "0, 1";
    using collect = std::vector<int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS(parse(json::binder::bind(out, binder), data, allow_all),
                     json::malformed_json_exception);
  }

  
  void test_map_parsing() {
    char data[] = "{ \"a\" : 1 , \"b\" : 2 }";
    using collect = std::map<std::string, int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS_NOTHING(parse(json::binder::bind(out, binder), data, allow_all));
    TS_ASSERT_EQUALS(out, collect({{"a", 1}, {"b", 2}}));
  }
  
  void test_map_throws_if_object_unterminated() {
    char data[] = "{ \"a\" : 1 , \"b\" : 2";
    using collect = std::map<std::string, int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS(parse(json::binder::bind(out, binder), data, allow_all),
                     json::unterminated_json_exception);
  }
  
  void test_map_throws_if_object_missing_associative_token() {
    char data[] = "{ \"a\" : 1 , \"b\" }";
    using collect = std::map<std::string, int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS(parse(json::binder::bind(out, binder), data, allow_all),
                     json::malformed_json_exception);
  }

  void test_map_throws_if_object_unstarted() {
    char data[] = "\"a\" : 1 , \"b\" : 2";
    using collect = std::map<std::string, int>;
    collect out;
    value_binder<collect> binder{};
    TS_ASSERT_THROWS(parse(json::binder::bind(out, binder), data, allow_all),
                     json::malformed_json_exception);
  }
  
  void test_write_vector() {
    std::string const expected = "[5,4,7]";
    std::stringstream ss;
    using collect = std::vector<int>;
    collect const in{ 5, 4, 7 };
    value_binder<collect> binder{};
    TS_ASSERT_THROWS_NOTHING(write(json::binder::bind(in, binder), ss));
    TS_ASSERT_EQUALS(ss.str(), expected);
  }
  
  void test_write_map() {
    std::string const expected = "{\"a\":1,\"b\":2}";
    std::stringstream ss;
    using collect = std::map<std::string, int>;
    collect const in{ { "a", 1 }, { "b", 2 } };
    value_binder<collect> binder{};
    TS_ASSERT_THROWS_NOTHING(write(json::binder::bind(in, binder), ss));
    TS_ASSERT_EQUALS(ss.str(), expected);
  }
};