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Add tests for BezierCurve

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Freevatar 2025-11-03 13:39:26 -05:00
parent a584202c87
commit 355a1e33dc
3 changed files with 106 additions and 0 deletions
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8
CMakeLists.txt
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@ -112,6 +112,14 @@ add_test(
COMMAND hyprutils_animation "utils")
add_dependencies(tests hyprutils_animation)
add_executable(hyprutils_beziercurve "tests/beziercurve.cpp")
target_link_libraries(hyprutils_beziercurve PRIVATE hyprutils PkgConfig::deps)
add_test(
NAME "BezierCurve"
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/tests
COMMAND hyprutils_beziercurve "beziercurve")
add_dependencies(tests hyprutils_beziercurve)
# Installation
install(TARGETS hyprutils)
install(DIRECTORY "include/hyprutils" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

83
tests/beziercurve.cpp Normal file
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@ -0,0 +1,83 @@
#include <cmath>
#include <hyprutils/animation/BezierCurve.hpp>
#include <hyprutils/math/Vector2D.hpp>
#include "shared.hpp"
using Hyprutils::Animation::CBezierCurve;
using Hyprutils::Math::Vector2D;
static void test_nonmonotonic4_clamps_out_of_range(int& ret) {
// Non-monotonic curve in X
// This used to drive the step-halving search to OOB. It should now clamp
CBezierCurve curve;
std::array<Vector2D, 4> pts = {
Vector2D{0.5f, 1.0f}, // P0
Vector2D{1.0f, 1.0f}, // P1
Vector2D{0.0f, 0.0f}, // P2
Vector2D{0.5f, 0.0f} // P3
};
curve.setup4(pts);
// x > last baked x
EXPECT(std::isfinite(curve.getYForPoint(0.6f)), true);
// Far beyond range
EXPECT(std::isfinite(curve.getYForPoint(std::numeric_limits<float>::max())), true);
EXPECT(std::isfinite(curve.getYForPoint(-std::numeric_limits<float>::max())), true);
}
static void test_adjacent_baked_x_equal(int& ret) {
// Curve with flat tail (X=1, Y=1)
CBezierCurve curve;
std::array<Vector2D, 4> pts = {
Vector2D{0.0f, 0.0f}, // P0
Vector2D{0.2f, 0.2f}, // P1
Vector2D{1.0f, 1.0f}, // P2
Vector2D{1.0f, 1.0f} // P3
};
curve.setup4(pts);
// Exactly at last baked X
const float y_at_end = curve.getYForPoint(1.0f);
// Slightly beyond last baked X
const float y_past_end = curve.getYForPoint(1.0001f);
EXPECT(y_at_end, 1.0f);
EXPECT(y_past_end, y_at_end);
}
static void test_all_baked_x_equal(int& ret) {
// Extreme case: X is constant along the whole curve
CBezierCurve curve;
std::array<Vector2D, 4> pts = {
Vector2D{0.0f, 0.0f}, // P0
Vector2D{0.0f, 0.3f}, // P1
Vector2D{0.0f, 0.7f}, // P2
Vector2D{0.0f, 1.0f} // P3
};
curve.setup4(pts);
// Below any baked X
const float y_lo = curve.getYForPoint(-100.0f);
const float y_0 = curve.getYForPoint(0.0f);
// Above any baked X
const float y_hi = curve.getYForPoint(100.0f);
EXPECT(std::isfinite(y_lo), true);
EXPECT(std::isfinite(y_0), true);
EXPECT(std::isfinite(y_hi), true);
// For this curve Y should stay within [0,1]
EXPECT((y_lo >= 0.0f && y_lo <= 1.0f), true);
EXPECT((y_0 >= 0.0f && y_0 <= 1.0f), true);
EXPECT((y_hi >= 0.0f && y_hi <= 1.0f), true);
}
int main() {
int ret = 0;
test_nonmonotonic4_clamps_out_of_range(ret);
test_adjacent_baked_x_equal(ret);
test_all_baked_x_equal(ret);
return ret;
}

15
tests/shared.hpp
View file

@ -18,6 +18,7 @@ namespace Colors {
} else { \
std::cout << Colors::GREEN << "Passed " << Colors::RESET << #expr << ". Got " << val << "\n"; \
}
#define EXPECT_VECTOR2D(expr, val) \
do { \
const auto& RESULT = expr; \
@ -30,3 +31,17 @@ namespace Colors {
std::cout << Colors::GREEN << "Passed " << Colors::RESET << #expr << ". Got (" << RESULT.x << ", " << RESULT.y << ")\n"; \
} \
} while (0)
#define EXPECT_NEAR(actual, expected, tolerance) \
do { \
auto _a = (actual); \
auto _e = (expected); \
auto _t = (tolerance); \
if (!(std::fabs((_a) - (_e)) <= (_t))) { \
std::cout << Colors::RED << "Failed: " << Colors::RESET << " EXPECT_NEAR(" #actual ", " #expected ", " #tolerance ") got=" << _a << " expected=" << _e << " ± " << _t \
<< "\n"; \
ret = 1; \
} else { \
std::cout << Colors::GREEN << "Passed " << Colors::RESET << " |" #actual " - " #expected "| <= " #tolerance "\n"; \
} \
} while (0)