113 lines
5.4 KiB
Python
113 lines
5.4 KiB
Python
import pytest
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import numpy as np
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import damask
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from damask import Crystal
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class TestCrystal:
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@pytest.mark.parametrize('lattice,family',[('aP','cubic'),('xI','cubic')])
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def test_invalid_init(self,lattice,family):
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with pytest.raises(KeyError):
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Crystal(family=family,lattice=lattice)
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def test_eq(self):
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family = np.random.choice(list(damask._crystal.lattice_symmetries.values()))
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assert Crystal(family=family) == Crystal(family=family)
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def test_double_to_lattice(self):
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c = Crystal(lattice='cF')
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with pytest.raises(KeyError):
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c.to_lattice(direction=np.ones(3),plane=np.ones(3))
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def test_double_to_frame(self):
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c = Crystal(lattice='cF')
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with pytest.raises(KeyError):
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c.to_frame(uvw=np.ones(3),hkl=np.ones(3))
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@pytest.mark.parametrize('lattice,a,b,c,alpha,beta,gamma',
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[
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('aP',0.5,2.0,3.0,0.8,0.5,1.2),
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('mP',1.0,2.0,3.0,np.pi/2,0.5,np.pi/2),
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('oI',0.5,1.5,3.0,np.pi/2,np.pi/2,np.pi/2),
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('tP',0.5,0.5,3.0,np.pi/2,np.pi/2,np.pi/2),
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('hP',1.0,None,1.6,np.pi/2,np.pi/2,2*np.pi/3),
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('cF',1.0,1.0,None,np.pi/2,np.pi/2,np.pi/2),
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])
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def test_bases_contraction(self,lattice,a,b,c,alpha,beta,gamma):
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c = Crystal(lattice=lattice,
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a=a,b=b,c=c,
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alpha=alpha,beta=beta,gamma=gamma)
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assert np.allclose(np.eye(3),np.einsum('ik,jk',c.basis_real,c.basis_reciprocal))
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def test_basis_invalid(self):
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with pytest.raises(KeyError):
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Crystal(family='cubic').basis_real
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@pytest.mark.parametrize('keyFrame,keyLattice',[('uvw','direction'),('hkl','plane'),])
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@pytest.mark.parametrize('vector',np.array([
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[1.,1.,1.],
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[-2.,3.,0.5],
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[0.,0.,1.],
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[1.,1.,1.],
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[2.,2.,2.],
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[0.,1.,1.],
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]))
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@pytest.mark.parametrize('lattice,a,b,c,alpha,beta,gamma',
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[
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('aP',0.5,2.0,3.0,0.8,0.5,1.2),
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('mP',1.0,2.0,3.0,np.pi/2,0.5,np.pi/2),
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('oI',0.5,1.5,3.0,np.pi/2,np.pi/2,np.pi/2),
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('tP',0.5,0.5,3.0,np.pi/2,np.pi/2,np.pi/2),
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('hP',1.0,1.0,1.6,np.pi/2,np.pi/2,2*np.pi/3),
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('cF',1.0,1.0,1.0,np.pi/2,np.pi/2,np.pi/2),
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])
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def test_to_frame_to_lattice(self,lattice,a,b,c,alpha,beta,gamma,vector,keyFrame,keyLattice):
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c = Crystal(lattice=lattice,
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a=a,b=b,c=c,
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alpha=alpha,beta=beta,gamma=gamma)
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assert np.allclose(vector,
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c.to_frame(**{keyFrame:c.to_lattice(**{keyLattice:vector})}))
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@pytest.mark.parametrize('lattice,a,b,c,alpha,beta,gamma,points',
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[
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('aP',0.5,2.0,3.0,0.8,0.5,1.2,[[0,0,0]]),
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('mS',1.0,2.0,3.0,np.pi/2,0.5,np.pi/2,[[0,0,0],[0.5,0.5,0.0]]),
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('oI',0.5,1.5,3.0,np.pi/2,np.pi/2,np.pi/2,[[0,0,0],[0.5,0.5,0.5]]),
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('hP',1.0,1.0,1.6,np.pi/2,np.pi/2,2*np.pi/3,[[0,0,0],[2./3.,1./3.,0.5]]),
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('cF',1.0,1.0,1.0,np.pi/2,np.pi/2,np.pi/2,[[0,0,0],[0.0,0.5,0.5],[0.5,0.0,0.5],[0.5,0.5,0.0]]),
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])
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def test_lattice_points(self,lattice,a,b,c,alpha,beta,gamma,points):
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c = Crystal(lattice=lattice,
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a=a,b=b,c=c,
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alpha=alpha,beta=beta,gamma=gamma)
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assert np.allclose(points,c.lattice_points)
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@pytest.mark.parametrize('crystal,length',
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[(Crystal(lattice='cF'),[12,6]),
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(Crystal(lattice='cI'),[12,12,24]),
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(Crystal(lattice='hP'),[3,3,6,12,6]),
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(Crystal(lattice='tI',c=1.2),[2,2,2,4,2,4,2,2,4,8,4,8,8])
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])
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def test_N_slip(self,crystal,length):
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assert [len(s) for s in crystal.kinematics('slip')['direction']] == length
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assert [len(s) for s in crystal.kinematics('slip')['plane']] == length
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@pytest.mark.parametrize('crystal,length',
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[(Crystal(lattice='cF'),[12]),
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(Crystal(lattice='cI'),[12]),
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(Crystal(lattice='hP'),[6,6,6,6]),
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])
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def test_N_twin(self,crystal,length):
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assert [len(s) for s in crystal.kinematics('twin')['direction']] == length
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assert [len(s) for s in crystal.kinematics('twin')['plane']] == length
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@pytest.mark.parametrize('crystal', [Crystal(lattice='cF'),
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Crystal(lattice='cI'),
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Crystal(lattice='hP'),
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Crystal(lattice='tI',c=1.2)])
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def test_related(self,crystal):
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for r in crystal.orientation_relationships:
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crystal.relation_operations(r)
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