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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: 1, y: 2, z: 3, 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.boostZ(beta=-0.9428090415820634)
assert out.x == x
assert out.y == y
# cannot equate the sympy expressions because of floating point errors
assert out.z.subs(values) == pytest.approx(-2.313708498984761)
assert out.t.subs(values) == pytest.approx(3.5147186257614287)
for t1 in (
"xyzt",
"xythetat",
"xyetat",
"rhophizt",
"rhophithetat",
"rhophietat",
"xyztau",
"xythetatau",
"xyetatau",
"rhophiztau",
"rhophithetatau",
"rhophietatau",
):
tvec = getattr(vec, "to_" + t1)()
out = tvec.boostZ(beta=-0.9428090415820634)
assert out.x.subs(values).evalf() == pytest.approx(1)
assert out.y.subs(values).evalf() == pytest.approx(2)
assert out.z.subs(values).evalf() == pytest.approx(-2.313708498984761)
assert out.t.subs(values).evalf() == pytest.approx(3.5147186257614287)
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