godot/tests/test_variant.h
Andrii Doroshenko (Xrayez) 0512cc01d9 Hide implementation details of doctest macros
`test_macros.h` is created to provide various macros acting as aliases for
doctest macros to work better with Godot internals and conventions. This also
makes it accessible for those who'd like to start writing tests in Godot, as
most vital information can be put together and documented directly in
`test_macros.h` header.

Developers are encouraged to include the new `tests/test_macros.h` for writing
new tests over `thirdparty/doctest/doctest.h`.

Added `TEST_CASE_PENDING("name")` as an alias for
`TEST_CASE("name", doctest::skip())` which could be used to mark failing tests
for issues yet to be fixed, so as to not affect CI testing results.

Added `ERR_PRINT_OFF` and `ERR_PRINT_ON` to control error printing for testing
various **expected** failure paths within Godot without polluting the test
summary with error messages.
2020-07-30 16:58:12 +03:00

112 lines
4.6 KiB
C++

/*************************************************************************/
/* test_variant.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_VARIANT_H
#define TEST_VARIANT_H
#include "core/variant.h"
#include "core/variant_parser.h"
#include "tests/test_macros.h"
namespace TestVariant {
TEST_CASE("[Variant] Writer and parser integer") {
int64_t a32 = 2147483648; // 2^31, so out of bounds for 32-bit signed int [-2^31,-2^31-1].
String a32_str;
VariantWriter::write_to_string(a32, a32_str);
CHECK_MESSAGE(a32_str != "-2147483648", "Should not wrap around");
int64_t b64 = 9223372036854775807; // 2^63-1, upper bound for signed 64-bit int.
String b64_str;
VariantWriter::write_to_string(b64, b64_str);
CHECK_MESSAGE(b64_str == "9223372036854775807", "Should not wrap around.");
VariantParser::StreamString ss;
String errs;
int line;
Variant b64_parsed;
int64_t b64_int_parsed;
ss.s = b64_str;
VariantParser::parse(&ss, b64_parsed, errs, line);
b64_int_parsed = b64_parsed;
CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "Should parse back.");
ss.s = "9223372036854775808"; // Overflowed by one.
VariantParser::parse(&ss, b64_parsed, errs, line);
b64_int_parsed = b64_parsed;
CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "The result should be clamped to max value.");
ss.s = "1e100"; // Googol! Scientific notation.
VariantParser::parse(&ss, b64_parsed, errs, line);
b64_int_parsed = b64_parsed;
CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "The result should be clamped to max value.");
}
TEST_CASE("[Variant] Writer and parser float") {
// Assuming real_t is double.
real_t a64 = 340282346638528859811704183484516925440.0; // std::numeric_limits<real_t>::max()
String a64_str;
VariantWriter::write_to_string(a64, a64_str);
CHECK_MESSAGE(a64_str == "3.40282e+38", "Writes in scientific notation.");
CHECK_MESSAGE(a64_str != "inf", "Should not overflow.");
CHECK_MESSAGE(a64_str != "nan", "The result should be defined.");
VariantParser::StreamString ss;
String errs;
int line;
Variant b64_parsed;
real_t b64_float_parsed;
ss.s = a64_str;
VariantParser::parse(&ss, b64_parsed, errs, line);
b64_float_parsed = b64_parsed;
CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should parse back.");
// Loses precision, but that's alright.
ss.s = "1.0e+100"; // Float version of Googol!
VariantParser::parse(&ss, b64_parsed, errs, line);
b64_float_parsed = b64_parsed;
CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should not overflow.");
}
} // namespace TestVariant
#endif // TEST_VARIANT_H