diff --git a/tests/test_json.h b/tests/test_json.h new file mode 100644 index 00000000000..2bbf5d17f66 --- /dev/null +++ b/tests/test_json.h @@ -0,0 +1,167 @@ +/*************************************************************************/ +/* test_json.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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. */ +/*************************************************************************/ + +#ifndef TEST_JSON_H +#define TEST_JSON_H + +#include "core/io/json.h" + +#include "thirdparty/doctest/doctest.h" + +namespace TestJSON { + +// NOTE: The current JSON parser accepts many non-conformant strings such as +// single-quoted strings, duplicate commas and trailing commas. +// This is intentionally not tested as users shouldn't rely on this behavior. + +TEST_CASE("[JSON] Parsing single data types") { + // Parsing a single data type as JSON is valid per the JSON specification. + + JSON json; + Variant result; + String err_str; + int err_line; + + json.parse("null", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing `null` as JSON should parse successfully."); + CHECK_MESSAGE( + result == Variant(), + "Parsing a double quoted string as JSON should return the expected value."); + + json.parse("true", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing boolean `true` as JSON should parse successfully."); + CHECK_MESSAGE( + result, + "Parsing boolean `true` as JSON should return the expected value."); + + json.parse("false", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing boolean `false` as JSON should parse successfully."); + CHECK_MESSAGE( + !result, + "Parsing boolean `false` as JSON should return the expected value."); + + // JSON only has a floating-point number type, no integer type. + // This is why we use `is_equal_approx()` for the comparison. + json.parse("123456", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing an integer number as JSON should parse successfully."); + CHECK_MESSAGE( + Math::is_equal_approx(result, 123'456), + "Parsing an integer number as JSON should return the expected value."); + + json.parse("0.123456", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing a floating-point number as JSON should parse successfully."); + CHECK_MESSAGE( + Math::is_equal_approx(result, 0.123456), + "Parsing a floating-point number as JSON should return the expected value."); + + json.parse("\"hello\"", result, err_str, err_line); + CHECK_MESSAGE( + err_line == 0, + "Parsing a double quoted string as JSON should parse successfully."); + CHECK_MESSAGE( + result == "hello", + "Parsing a double quoted string as JSON should return the expected value."); +} + +TEST_CASE("[JSON] Parsing arrays") { + JSON json; + Variant result; + String err_str; + int err_line; + + // JSON parsing fails if it's split over several lines (even if leading indentation is removed). + json.parse( + R"(["Hello", "world.", "This is",["a","json","array.",[]], "Empty arrays ahoy:", [[["Gotcha!"]]]])", + result, err_str, err_line); + + const Array array = result; + CHECK_MESSAGE( + err_line == 0, + "Parsing a JSON array should parse successfully."); + CHECK_MESSAGE( + array[0] == "Hello", + "The parsed JSON should contain the expected values."); + const Array sub_array = array[3]; + CHECK_MESSAGE( + sub_array.size() == 4, + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + sub_array[1] == "json", + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + sub_array[3].hash() == Array().hash(), + "The parsed JSON should contain the expected values."); + const Array deep_array = Array(Array(array[5])[0])[0]; + CHECK_MESSAGE( + deep_array[0] == "Gotcha!", + "The parsed JSON should contain the expected values."); +} + +TEST_CASE("[JSON] Parsing objects (dictionaries)") { + JSON json; + Variant result; + String err_str; + int err_line; + + json.parse( + R"({"name": "Godot Engine", "is_free": true, "bugs": null, "apples": {"red": 500, "green": 0, "blue": -20}, "empty_object": {}})", + result, err_str, err_line); + + const Dictionary dictionary = result; + CHECK_MESSAGE( + dictionary["name"] == "Godot Engine", + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + dictionary["is_free"], + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + dictionary["bugs"] == Variant(), + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + Math::is_equal_approx(Dictionary(dictionary["apples"])["blue"], -20), + "The parsed JSON should contain the expected values."); + CHECK_MESSAGE( + dictionary["empty_object"].hash() == Dictionary().hash(), + "The parsed JSON should contain the expected values."); +} + +} // namespace TestJSON + +#endif // TEST_JSON_H diff --git a/tests/test_main.cpp b/tests/test_main.cpp index b4ddf0f1c1a..a6d2bfdd4dd 100644 --- a/tests/test_main.cpp +++ b/tests/test_main.cpp @@ -40,6 +40,7 @@ #include "test_expression.h" #include "test_gradient.h" #include "test_gui.h" +#include "test_json.h" #include "test_list.h" #include "test_math.h" #include "test_method_bind.h"