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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
445 lines
15 KiB
C++
445 lines
15 KiB
C++
/**************************************************************************/
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/* test_expression.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef TEST_EXPRESSION_H
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#define TEST_EXPRESSION_H
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#include "core/math/expression.h"
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#include "tests/test_macros.h"
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namespace TestExpression {
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TEST_CASE("[Expression] Integer arithmetic") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("-123456") == OK,
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"Integer identity should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == -123456,
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"Integer identity should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("2 + 3") == OK,
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"Integer addition should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 5,
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"Integer addition should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("999999999999 + 999999999999") == OK,
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"Large integer addition should parse successfully.");
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CHECK_MESSAGE(
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int64_t(expression.execute()) == 1'999'999'999'998,
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"Large integer addition should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("25 / 10") == OK,
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"Integer / integer division should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 2,
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"Integer / integer division should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("2 * (6 + 14) / 2 - 5") == OK,
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"Integer multiplication-addition-subtraction-division should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 15,
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"Integer multiplication-addition-subtraction-division should return the expected result.");
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}
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TEST_CASE("[Expression] Floating-point arithmetic") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("-123.456") == OK,
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"Float identity should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(-123.456),
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"Float identity should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("2.0 + 3.0") == OK,
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"Float addition should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(5),
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"Float addition should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("3.0 / 10") == OK,
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"Float / integer division should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(0.3),
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"Float / integer division should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("3 / 10.0") == OK,
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"Basic integer / float division should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(0.3),
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"Basic integer / float division should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("3.0 / 10.0") == OK,
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"Float / float division should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(0.3),
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"Float / float division should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("2.5 * (6.0 + 14.25) / 2.0 - 5.12345") == OK,
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"Float multiplication-addition-subtraction-division should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(20.18905),
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"Float multiplication-addition-subtraction-division should return the expected result.");
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}
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TEST_CASE("[Expression] Scientific notation") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("2.e5") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(200'000),
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"The expression should return the expected result.");
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// The middle "e" is ignored here.
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CHECK_MESSAGE(
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expression.parse("2e5") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(2e5),
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"The expression should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("2e.5") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(2),
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"The expression should return the expected result.");
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}
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TEST_CASE("[Expression] Underscored numeric literals") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("1_000_000") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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expression.parse("1_000.000") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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expression.parse("0xff_99_00") == OK,
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"The expression should parse successfully.");
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}
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TEST_CASE("[Expression] Built-in functions") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("sqrt(pow(3, 2) + pow(4, 2))") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 5,
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"`sqrt(pow(3, 2) + pow(4, 2))` should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("snapped(sin(0.5), 0.01)") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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double(expression.execute()) == doctest::Approx(0.48),
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"`snapped(sin(0.5), 0.01)` should return the expected result.");
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CHECK_MESSAGE(
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expression.parse("pow(2.0, -2500)") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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Math::is_zero_approx(double(expression.execute())),
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"`pow(2.0, -2500)` should return the expected result (asymptotically zero).");
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}
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TEST_CASE("[Expression] Boolean expressions") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("24 >= 12") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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bool(expression.execute()),
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"The boolean expression should evaluate to `true`.");
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CHECK_MESSAGE(
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expression.parse("1.0 < 1.25 && 1.25 < 2.0") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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bool(expression.execute()),
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"The boolean expression should evaluate to `true`.");
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CHECK_MESSAGE(
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expression.parse("!2") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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!bool(expression.execute()),
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"The boolean expression should evaluate to `false`.");
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CHECK_MESSAGE(
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expression.parse("!!2") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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bool(expression.execute()),
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"The boolean expression should evaluate to `true`.");
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CHECK_MESSAGE(
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expression.parse("!0") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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bool(expression.execute()),
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"The boolean expression should evaluate to `true`.");
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CHECK_MESSAGE(
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expression.parse("!!0") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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!bool(expression.execute()),
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"The boolean expression should evaluate to `false`.");
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CHECK_MESSAGE(
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expression.parse("2 && 5") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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bool(expression.execute()),
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"The boolean expression should evaluate to `true`.");
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CHECK_MESSAGE(
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expression.parse("0 || 0") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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!bool(expression.execute()),
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"The boolean expression should evaluate to `false`.");
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CHECK_MESSAGE(
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expression.parse("(2 <= 4) && (2 > 5)") == OK,
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"The boolean expression should parse successfully.");
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CHECK_MESSAGE(
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!bool(expression.execute()),
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"The boolean expression should evaluate to `false`.");
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}
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TEST_CASE("[Expression] Expressions with variables") {
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Expression expression;
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PackedStringArray parameter_names;
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parameter_names.push_back("foo");
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parameter_names.push_back("bar");
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CHECK_MESSAGE(
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expression.parse("foo + bar + 50", parameter_names) == OK,
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"The expression should parse successfully.");
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Array values;
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values.push_back(60);
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values.push_back(20);
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CHECK_MESSAGE(
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int(expression.execute(values)) == 130,
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"The expression should return the expected value.");
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PackedStringArray parameter_names_invalid;
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parameter_names_invalid.push_back("foo");
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parameter_names_invalid.push_back("baz"); // Invalid parameter name.
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CHECK_MESSAGE(
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expression.parse("foo + bar + 50", parameter_names_invalid) == OK,
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"The expression should parse successfully.");
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Array values_invalid;
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values_invalid.push_back(60);
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values_invalid.push_back(20);
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// Invalid parameters will parse successfully but print an error message when executing.
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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int(expression.execute(values_invalid)) == 0,
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"The expression should return the expected value.");
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ERR_PRINT_ON;
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// Mismatched argument count (more values than parameters).
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PackedStringArray parameter_names_mismatch;
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parameter_names_mismatch.push_back("foo");
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parameter_names_mismatch.push_back("bar");
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CHECK_MESSAGE(
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expression.parse("foo + bar + 50", parameter_names_mismatch) == OK,
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"The expression should parse successfully.");
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Array values_mismatch;
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values_mismatch.push_back(60);
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values_mismatch.push_back(20);
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values_mismatch.push_back(110);
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CHECK_MESSAGE(
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int(expression.execute(values_mismatch)) == 130,
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"The expression should return the expected value.");
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// Mismatched argument count (more parameters than values).
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PackedStringArray parameter_names_mismatch2;
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parameter_names_mismatch2.push_back("foo");
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parameter_names_mismatch2.push_back("bar");
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parameter_names_mismatch2.push_back("baz");
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CHECK_MESSAGE(
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expression.parse("foo + bar + baz + 50", parameter_names_mismatch2) == OK,
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"The expression should parse successfully.");
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Array values_mismatch2;
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values_mismatch2.push_back(60);
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values_mismatch2.push_back(20);
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// Having more parameters than values will parse successfully but print an
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// error message when executing.
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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int(expression.execute(values_mismatch2)) == 0,
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"The expression should return the expected value.");
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ERR_PRINT_ON;
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}
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TEST_CASE("[Expression] Invalid expressions") {
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Expression expression;
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CHECK_MESSAGE(
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expression.parse("\\") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("0++") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("()") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("()()") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("() - ()") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("() * 12345") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("() * 12345") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("123'456") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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CHECK_MESSAGE(
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expression.parse("123\"456") == ERR_INVALID_PARAMETER,
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"The expression shouldn't parse successfully.");
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}
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TEST_CASE("[Expression] Unusual expressions") {
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Expression expression;
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// Redundant parentheses don't cause a parse error as long as they're matched.
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CHECK_MESSAGE(
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expression.parse("(((((((((((((((666)))))))))))))))") == OK,
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"The expression should parse successfully.");
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// Using invalid identifiers doesn't cause a parse error.
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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expression.parse("hello + hello") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 0,
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"The expression should return the expected result.");
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ERR_PRINT_ON;
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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expression.parse("$1.00 + ???5") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 0,
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"The expression should return the expected result.");
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ERR_PRINT_ON;
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// Commas can't be used as a decimal parameter.
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CHECK_MESSAGE(
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expression.parse("123,456") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 123,
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"The expression should return the expected result.");
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// Spaces can't be used as a separator for large numbers.
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CHECK_MESSAGE(
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expression.parse("123 456") == OK,
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"The expression should parse successfully.");
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CHECK_MESSAGE(
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int(expression.execute()) == 123,
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"The expression should return the expected result.");
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// Division by zero is accepted, even though it prints an error message normally.
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CHECK_MESSAGE(
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expression.parse("-25.4 / 0") == OK,
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"The expression should parse successfully.");
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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Math::is_inf(double(expression.execute())),
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"`-25.4 / 0` should return inf.");
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ERR_PRINT_ON;
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CHECK_MESSAGE(
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expression.parse("0 / 0") == OK,
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"The expression should parse successfully.");
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ERR_PRINT_OFF;
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CHECK_MESSAGE(
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int(expression.execute()) == 0,
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"`0 / 0` should return 0.");
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ERR_PRINT_ON;
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// The tests below currently crash the engine.
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//
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//CHECK_MESSAGE(
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// expression.parse("(-9223372036854775807 - 1) % -1") == OK,
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// "The expression should parse successfully.");
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//CHECK_MESSAGE(
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// int64_t(expression.execute()) == 0,
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// "`(-9223372036854775807 - 1) % -1` should return the expected result.");
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//
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//CHECK_MESSAGE(
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// expression.parse("(-9223372036854775807 - 1) / -1") == OK,
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// "The expression should parse successfully.");
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//CHECK_MESSAGE(
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// int64_t(expression.execute()) == 0,
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// "`(-9223372036854775807 - 1) / -1` should return the expected result.");
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}
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} // namespace TestExpression
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#endif // TEST_EXPRESSION_H
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