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103 changes: 103 additions & 0 deletions
103
tests/unit/potential/builtin/test_harmonicoscillator.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| from typing import Any | ||
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| import pytest | ||
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| import quaxed.numpy as qnp | ||
| from unxt import Quantity | ||
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| import galax.typing as gt | ||
| from ..param.test_field import ParameterFieldMixin | ||
| from ..test_core import TestAbstractPotential as AbstractPotential_Test | ||
| from galax.potential import HarmonicOscillatorPotential | ||
| from galax.potential._potential.base import AbstractPotentialBase | ||
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| class ParameterOmegaMixin(ParameterFieldMixin): | ||
| """Test the omega parameter.""" | ||
|
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| @pytest.fixture(scope="class") | ||
| def field_omega(self) -> Quantity["frequency"]: | ||
| return Quantity(1.0, "Hz") | ||
|
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| # ===================================================== | ||
|
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| def test_omega_constant(self, pot_cls, fields): | ||
| """Test the `omega` parameter.""" | ||
| fields["omega"] = Quantity(1.0, "Hz") | ||
| pot = pot_cls(**fields) | ||
| assert pot.omega(t=0) == Quantity(1.0, "Hz") | ||
|
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| @pytest.mark.xfail(reason="TODO: user function doesn't have units") | ||
| def test_omega_userfunc(self, pot_cls, fields): | ||
| """Test the `omega` parameter.""" | ||
| fields["omega"] = lambda t: t * 1.2 | ||
| pot = pot_cls(**fields) | ||
| assert pot.omega(t=0) == 2 | ||
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|
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| class TestHarmonicOscillatorPotential( | ||
| AbstractPotential_Test, | ||
| # Parameters | ||
| ParameterOmegaMixin, | ||
| ): | ||
| @pytest.fixture(scope="class") | ||
| def pot_cls(self) -> type[HarmonicOscillatorPotential]: | ||
| return HarmonicOscillatorPotential | ||
|
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| @pytest.fixture(scope="class") | ||
| def fields_(self, field_omega, field_units) -> dict[str, Any]: | ||
| return {"omega": field_omega, "units": field_units} | ||
|
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| # ========================================================================== | ||
|
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| def test_potential_energy( | ||
| self, pot: HarmonicOscillatorPotential, x: gt.Vec3 | ||
| ) -> None: | ||
| expect = Quantity(-0.94871936, pot.units["specific energy"]) | ||
| assert qnp.isclose( | ||
| pot.potential_energy(x, t=0), expect, atol=Quantity(1e-8, expect.unit) | ||
| ) | ||
|
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| def test_gradient(self, pot: HarmonicOscillatorPotential, x: gt.Vec3) -> None: | ||
| expect = Quantity( | ||
| [0.05347411, 0.10694822, 0.16042233], pot.units["acceleration"] | ||
| ) | ||
| assert qnp.allclose( | ||
| pot.gradient(x, t=0), expect, atol=Quantity(1e-8, expect.unit) | ||
| ) | ||
|
|
||
| def test_density(self, pot: HarmonicOscillatorPotential, x: gt.Vec3) -> None: | ||
| expect = Quantity(3.989933e08, pot.units["mass density"]) | ||
| assert qnp.isclose( | ||
| pot.density(x, t=0), expect, atol=Quantity(1e-8, expect.unit) | ||
| ) | ||
|
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| def test_hessian(self, pot: HarmonicOscillatorPotential, x: gt.Vec3) -> None: | ||
| expect = Quantity( | ||
| [ | ||
| [0.04362645, -0.01969533, -0.02954299], | ||
| [-0.01969533, 0.01408345, -0.05908599], | ||
| [-0.02954299, -0.05908599, -0.03515487], | ||
| ], | ||
| "1/Myr2", | ||
| ) | ||
| assert qnp.allclose( | ||
| pot.hessian(x, t=0), expect, atol=Quantity(1e-8, expect.unit) | ||
| ) | ||
|
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| # --------------------------------- | ||
| # Convenience methods | ||
|
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| def test_tidal_tensor(self, pot: AbstractPotentialBase, x: gt.Vec3) -> None: | ||
| """Test the `AbstractPotentialBase.tidal_tensor` method.""" | ||
| expect = Quantity( | ||
| [ | ||
| [0.0361081, -0.01969533, -0.02954299], | ||
| [-0.01969533, 0.00656511, -0.05908599], | ||
| [-0.02954299, -0.05908599, -0.04267321], | ||
| ], | ||
| "1/Myr2", | ||
| ) | ||
| assert qnp.allclose( | ||
| pot.tidal_tensor(x, t=0), expect, atol=Quantity(1e-8, expect.unit) | ||
| ) |