81 lines
2.0 KiB
Python
81 lines
2.0 KiB
Python
import numpy as np
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import pytest
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from tests.node_tests._shared import make_field
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def test_output_shapes():
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from backend.nodes.mfm_domains import MFMDomainGeneration
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node = MFMDomainGeneration()
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field = make_field(shape=(48, 64))
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hz, dhz_dz = node.process(
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field,
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height=50e-9,
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thickness=20e-9,
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magnetization=1e6,
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stripe_width_a=200e-9,
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stripe_width_b=200e-9,
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gap=0.0,
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)
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assert hz.data.shape == (48, 64)
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assert dhz_dz.data.shape == (48, 64)
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def test_finite_values():
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from backend.nodes.mfm_domains import MFMDomainGeneration
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node = MFMDomainGeneration()
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field = make_field(shape=(32, 32))
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hz, dhz_dz = node.process(
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field,
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height=50e-9,
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thickness=20e-9,
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magnetization=1e6,
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stripe_width_a=200e-9,
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stripe_width_b=200e-9,
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gap=0.0,
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)
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assert np.isfinite(hz.data).all()
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assert np.isfinite(dhz_dz.data).all()
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def test_uniform_along_y():
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"""Stripes run along y, so every row of the output should be identical."""
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from backend.nodes.mfm_domains import MFMDomainGeneration
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node = MFMDomainGeneration()
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field = make_field(shape=(64, 64))
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hz, dhz_dz = node.process(
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field,
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height=50e-9,
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thickness=20e-9,
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magnetization=1e6,
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stripe_width_a=200e-9,
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stripe_width_b=200e-9,
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gap=0.0,
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)
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assert np.allclose(hz.data[0], hz.data[hz.data.shape[0] // 2])
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assert np.allclose(dhz_dz.data[0], dhz_dz.data[dhz_dz.data.shape[0] // 2])
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def test_units():
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from backend.nodes.mfm_domains import MFMDomainGeneration
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node = MFMDomainGeneration()
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field = make_field(shape=(32, 32))
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hz, dhz_dz = node.process(
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field,
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height=50e-9,
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thickness=20e-9,
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magnetization=1e6,
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stripe_width_a=200e-9,
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stripe_width_b=200e-9,
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gap=0.0,
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)
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assert hz.si_unit_z == "A/m"
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assert dhz_dz.si_unit_z == "A/m²"
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