mirror of
https://github.com/dropbox/json11.git
synced 2024-11-27 07:59:50 +08:00
287 lines
10 KiB
C++
287 lines
10 KiB
C++
/*
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* Define JSON11_TEST_CUSTOM_CONFIG to 1 if you want to build this tester into
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* your own unit-test framework rather than a stand-alone program. By setting
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* The values of the variables included below, you can insert your own custom
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* code into this file as it builds, in order to make it into a test case for
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* your favorite framework.
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*/
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#if !JSON11_TEST_CUSTOM_CONFIG
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#define JSON11_TEST_CPP_PREFIX_CODE
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#define JSON11_TEST_CPP_SUFFIX_CODE
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#define JSON11_TEST_STANDALONE_MAIN 1
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#define JSON11_TEST_CASE(name) static void name()
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#define JSON11_TEST_ASSERT(b) assert(b)
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#ifdef NDEBUG
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#undef NDEBUG//at now assert will work even in Release build
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#endif
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#endif // JSON11_TEST_CUSTOM_CONFIG
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/*
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* Enable or disable code which demonstrates the behavior change in Xcode 7 / Clang 3.7,
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* introduced by DR1467 and described here: https://github.com/dropbox/json11/issues/86
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* Defaults to off since it doesn't appear the standards committee is likely to act
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* on this, so it needs to be considered normal behavior.
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*/
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#ifndef JSON11_ENABLE_DR1467_CANARY
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#define JSON11_ENABLE_DR1467_CANARY 0
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#endif
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/*
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* Beginning of standard source file, which makes use of the customizations above.
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*/
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#include <cassert>
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#include <string>
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#include <cstdio>
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#include <cstring>
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#include <iostream>
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#include <sstream>
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#include "json11.hpp"
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#include <list>
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#include <set>
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#include <unordered_map>
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#include <algorithm>
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#include <type_traits>
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// Insert user-defined prefix code (includes, function declarations, etc)
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// to set up a custom test suite
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JSON11_TEST_CPP_PREFIX_CODE
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using namespace json11;
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using std::string;
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// Check that Json has the properties we want.
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#define CHECK_TRAIT(x) static_assert(std::x::value, #x)
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CHECK_TRAIT(is_nothrow_constructible<Json>);
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CHECK_TRAIT(is_nothrow_default_constructible<Json>);
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CHECK_TRAIT(is_copy_constructible<Json>);
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CHECK_TRAIT(is_nothrow_move_constructible<Json>);
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CHECK_TRAIT(is_copy_assignable<Json>);
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CHECK_TRAIT(is_nothrow_move_assignable<Json>);
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CHECK_TRAIT(is_nothrow_destructible<Json>);
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JSON11_TEST_CASE(json11_test) {
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const string simple_test =
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R"({"k1":"v1", "k2":42, "k3":["a",123,true,false,null]})";
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string err;
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const auto json = Json::parse(simple_test, err);
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std::cout << "k1: " << json["k1"].string_value() << "\n";
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std::cout << "k3: " << json["k3"].dump() << "\n";
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for (auto &k : json["k3"].array_items()) {
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std::cout << " - " << k.dump() << "\n";
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}
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string comment_test = R"({
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// comment /* with nested comment */
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"a": 1,
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// comment
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// continued
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"b": "text",
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/* multi
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line
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comment
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// line-comment-inside-multiline-comment
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*/
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// and single-line comment
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// and single-line comment /* multiline inside single line */
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"c": [1, 2, 3]
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// and single-line comment at end of object
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})";
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string err_comment;
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auto json_comment = Json::parse(
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comment_test, err_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(!json_comment.is_null());
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JSON11_TEST_ASSERT(err_comment.empty());
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comment_test = "{\"a\": 1}//trailing line comment";
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json_comment = Json::parse(
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comment_test, err_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(!json_comment.is_null());
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JSON11_TEST_ASSERT(err_comment.empty());
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comment_test = "{\"a\": 1}/*trailing multi-line comment*/";
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json_comment = Json::parse(
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comment_test, err_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(!json_comment.is_null());
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JSON11_TEST_ASSERT(err_comment.empty());
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string failing_comment_test = "{\n/* unterminated comment\n\"a\": 1,\n}";
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string err_failing_comment;
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auto json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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failing_comment_test = "{\n/* unterminated trailing comment }";
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json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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failing_comment_test = "{\n/ / bad comment }";
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json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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failing_comment_test = "{// bad comment }";
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json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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failing_comment_test = "{\n\"a\": 1\n}/";
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json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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failing_comment_test = "{/* bad\ncomment *}";
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json_failing_comment = Json::parse(
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failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
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JSON11_TEST_ASSERT(json_failing_comment.is_null());
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JSON11_TEST_ASSERT(!err_failing_comment.empty());
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std::list<int> l1 { 1, 2, 3 };
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std::vector<int> l2 { 1, 2, 3 };
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std::set<int> l3 { 1, 2, 3 };
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JSON11_TEST_ASSERT(Json(l1) == Json(l2));
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JSON11_TEST_ASSERT(Json(l2) == Json(l3));
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std::map<string, string> m1 { { "k1", "v1" }, { "k2", "v2" } };
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std::unordered_map<string, string> m2 { { "k1", "v1" }, { "k2", "v2" } };
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JSON11_TEST_ASSERT(Json(m1) == Json(m2));
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// Json literals
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const Json obj = Json::object({
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{ "k1", "v1" },
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{ "k2", 42.0 },
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{ "k3", Json::array({ "a", 123.0, true, false, nullptr }) },
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});
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std::cout << "obj: " << obj.dump() << "\n";
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JSON11_TEST_ASSERT(obj.dump() == "{\"k1\": \"v1\", \"k2\": 42, \"k3\": [\"a\", 123, true, false, null]}");
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JSON11_TEST_ASSERT(Json("a").number_value() == 0);
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JSON11_TEST_ASSERT(Json("a").string_value() == "a");
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JSON11_TEST_ASSERT(Json().number_value() == 0);
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JSON11_TEST_ASSERT(obj == json);
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JSON11_TEST_ASSERT(Json(42) == Json(42.0));
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JSON11_TEST_ASSERT(Json(42) != Json(42.1));
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const string unicode_escape_test =
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R"([ "blah\ud83d\udca9blah\ud83dblah\udca9blah\u0000blah\u1234" ])";
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const char utf8[] = "blah" "\xf0\x9f\x92\xa9" "blah" "\xed\xa0\xbd" "blah"
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"\xed\xb2\xa9" "blah" "\0" "blah" "\xe1\x88\xb4";
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Json uni = Json::parse(unicode_escape_test, err);
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JSON11_TEST_ASSERT(uni[0].string_value().size() == (sizeof utf8) - 1);
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JSON11_TEST_ASSERT(std::memcmp(uni[0].string_value().data(), utf8, sizeof utf8) == 0);
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// Demonstrates the behavior change in Xcode 7 / Clang 3.7, introduced by DR1467
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// and described here: https://llvm.org/bugs/show_bug.cgi?id=23812
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if (JSON11_ENABLE_DR1467_CANARY) {
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Json nested_array = Json::array { Json::array { 1, 2, 3 } };
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JSON11_TEST_ASSERT(nested_array.is_array());
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JSON11_TEST_ASSERT(nested_array.array_items().size() == 1);
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JSON11_TEST_ASSERT(nested_array.array_items()[0].is_array());
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JSON11_TEST_ASSERT(nested_array.array_items()[0].array_items().size() == 3);
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}
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{
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const std::string good_json = R"( {"k1" : "v1"})";
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const std::string bad_json1 = good_json + " {";
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const std::string bad_json2 = good_json + R"({"k2":"v2", "k3":[)";
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struct TestMultiParse {
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std::string input;
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std::string::size_type expect_parser_stop_pos;
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size_t expect_not_empty_elms_count;
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Json expect_parse_res;
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} tests[] = {
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{" {", 0, 0, {}},
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{good_json, good_json.size(), 1, Json(std::map<string, string>{ { "k1", "v1" } })},
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{bad_json1, good_json.size() + 1, 1, Json(std::map<string, string>{ { "k1", "v1" } })},
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{bad_json2, good_json.size(), 1, Json(std::map<string, string>{ { "k1", "v1" } })},
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{"{}", 2, 1, Json::object{}},
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};
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for (const auto &tst : tests) {
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std::string::size_type parser_stop_pos;
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std::string err;
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auto res = Json::parse_multi(tst.input, parser_stop_pos, err);
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JSON11_TEST_ASSERT(parser_stop_pos == tst.expect_parser_stop_pos);
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JSON11_TEST_ASSERT(
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(size_t)std::count_if(res.begin(), res.end(),
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[](const Json& j) { return !j.is_null(); })
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== tst.expect_not_empty_elms_count);
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if (!res.empty()) {
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JSON11_TEST_ASSERT(tst.expect_parse_res == res[0]);
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}
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}
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}
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Json my_json = Json::object {
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{ "key1", "value1" },
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{ "key2", false },
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{ "key3", Json::array { 1, 2, 3 } },
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};
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std::string json_obj_str = my_json.dump();
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std::cout << "json_obj_str: " << json_obj_str << "\n";
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JSON11_TEST_ASSERT(json_obj_str == "{\"key1\": \"value1\", \"key2\": false, \"key3\": [1, 2, 3]}");
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class Point {
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public:
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int x;
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int y;
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Point (int x, int y) : x(x), y(y) {}
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Json to_json() const { return Json::array { x, y }; }
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};
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std::vector<Point> points = { { 1, 2 }, { 10, 20 }, { 100, 200 } };
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std::string points_json = Json(points).dump();
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std::cout << "points_json: " << points_json << "\n";
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JSON11_TEST_ASSERT(points_json == "[[1, 2], [10, 20], [100, 200]]");
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JSON11_TEST_ASSERT(((Json)(Json::object { { "foo", nullptr } })).has_shape({ { "foo", Json::NUL } }, err) == true);
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JSON11_TEST_ASSERT(((Json)(Json::object { { "foo", 1234567 } })).has_shape({ { "foo", Json::NUL } }, err) == false);
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JSON11_TEST_ASSERT(((Json)(Json::object { { "bar", 1234567 } })).has_shape({ { "foo", Json::NUL } }, err) == false);
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}
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#if JSON11_TEST_STANDALONE_MAIN
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static void parse_from_stdin() {
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string buf;
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string line;
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while (std::getline(std::cin, line)) {
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buf += line + "\n";
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}
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string err;
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auto json = Json::parse(buf, err);
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if (!err.empty()) {
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printf("Failed: %s\n", err.c_str());
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} else {
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printf("Result: %s\n", json.dump().c_str());
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}
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}
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int main(int argc, char **argv) {
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if (argc == 2 && argv[1] == string("--stdin")) {
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parse_from_stdin();
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return 0;
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}
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json11_test();
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}
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#endif // JSON11_TEST_STANDALONE_MAIN
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// Insert user-defined suffix code (function definitions, etc)
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// to set up a custom test suite
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JSON11_TEST_CPP_SUFFIX_CODE
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