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# Copyright (c) 2019-2025, Saransh Chopra, Henry Schreiner, Eduardo Rodrigues, Jonas Eschle, and Jim Pivarski.
#
# Distributed under the 3-clause BSD license, see accompanying file LICENSE
# or https://github.com/scikit-hep/vector for details.
from __future__ import annotations
import pytest
import vector
sympy = pytest.importorskip("sympy")
pytestmark = pytest.mark.sympy
x, y, z, t = sympy.symbols("x y z t", real=True)
values = {x: 2, y: 3, z: 1, t: 4}
def test():
vec = vector.VectorSympy4D(
azimuthal=vector.backends.sympy.AzimuthalSympyXY(x, y),
longitudinal=vector.backends.sympy.LongitudinalSympyZ(z),
temporal=vector.backends.sympy.TemporalSympyT(t),
)
out = vec.boostY(gamma=3)
assert out.x == x
assert out.y == 2 * sympy.sqrt(2) * t + 3 * y
assert out.z == z
assert out.t == 3 * t + 2 * sympy.sqrt(2) * y
for t1 in (
"xyzt",
"xythetat",
"xyetat",
"rhophizt",
"rhophithetat",
"rhophietat",
"xyztau",
"xythetatau",
"xyetatau",
"rhophiztau",
"rhophithetatau",
"rhophietatau",
):
tvec = getattr(vec, "to_" + t1)()
out = tvec.boostY(gamma=3)
assert out.x.subs(values).evalf() == pytest.approx(2)
assert out.y.subs(values).evalf() == pytest.approx(20.3137084989848)
assert out.z.subs(values).evalf() == pytest.approx(1)
assert out.t.subs(values).evalf() == pytest.approx(20.4852813742386)
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