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444 lines
15 KiB
C++
444 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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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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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Math::is_equal_approx(float(expression.execute()), -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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 25),
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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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Math::is_equal_approx(float(expression.execute()), 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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Math::is_equal_approx(float(expression.execute()), 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(float(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(float(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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