def test_add_sub(self):
container1 = mm.Dynamics(terms=[self.precession, self.zhangli])
container2 = mm.Dynamics(terms=[self.damping])
container3 = mm.Dynamics(terms=[self.precession, self.damping])
assert container1 != container2
res = container1 + container2
check_container(res)
assert len(res) == 3
assert container1 + container2 == container2 + container1
res = container3 - container2
check_container(res)
assert len(res) == 1
assert self.damping not in res
with pytest.raises(ValueError):
res -= self.damping
assert res + self.damping == self.damping + res
with pytest.raises(TypeError):
res = container1 + 5
with pytest.raises(TypeError):
res = container1 - 5
def test_init_invalid_args(self):
container = mm.Dynamics()
for term in self.invalid_terms:
with pytest.raises(TypeError):
container += term
check_container(container)
assert len(container) == 0
def dynamics(self, value):
empty_container = mm.Dynamics()
if value == 0:
self._dynamics = empty_container
elif isinstance(value, (mm.DynamicsTerm, mm.Dynamics)):
self._dynamics = empty_container + value # checks by + operator
else:
msg = f'Cannot set dynamics equation with {type(value)}.'
raise TypeError(msg)
def test_repr(self):
container = mm.Dynamics(terms=self.terms)
check_container(container)
assert isinstance(repr(container), str)
assert 'Precession' in repr(container)
container -= container.precession
assert 'Precession' not in repr(container)
def test_add_terms(self):
dynamics = mm.Dynamics()
for term in self.terms:
dynamics._add(term)
assert isinstance(dynamics, mm.Dynamics)
assert isinstance(dynamics.terms, list)
assert dynamics.terms[-1] == term
assert dynamics.terms[-1].name == term.name
assert len(dynamics.terms) == 3
def test_init(self):
# Init with terms list.
container = mm.Dynamics(terms=self.terms)
check_container(container)
assert len(container) == 3
# Empty terms list.
container = mm.Dynamics()
check_container(container)
assert len(container) == 0
# Add terms one by one.
for i, term in enumerate(self.terms):
container += term
check_container(container)
assert len(container) == i + 1
assert isinstance(container, mm.Dynamics)
# Create container as a sum of terms.
container = (self.precession + self.damping)
check_container(container)
assert len(container) == 2
def test_getattr(self):
container = mm.Dynamics(terms=self.terms)
check_container(container)
assert isinstance(container.precession, mm.Precession)
assert hasattr(container.precession, 'gamma0')
assert isinstance(container.damping, mm.Damping)
assert hasattr(container.damping, 'alpha')
assert isinstance(container.zhangli, mm.ZhangLi)
assert hasattr(container.zhangli, 'u')
assert hasattr(container.zhangli, 'beta')
# Try to get non-existing attribute.
container -= self.damping
check_container(container)
with pytest.raises(AttributeError):
damping = container.damping
def test_repr_latex(self):
dynamics = mm.Dynamics()
latex = dynamics._repr_latex_()
assert latex[0] == latex[-1] == '$'
assert latex.count('$') == 2
assert '\\frac' in latex
assert latex[-2] == '0'
for term in self.terms:
dynamics._add(term)
latex = dynamics._repr_latex_()
assert latex[0] == latex[-1] == '$'
assert latex.count('$') == 2
assert r'-\gamma_{0}^{*}' in latex
assert r'\mathbf{m}' in latex
assert r'\mathbf{H}_\text{eff}' in latex
assert r'\times' in latex
assert r'\alpha' in latex
assert latex.count('-') == 2
assert latex.count('+') == 2
assert latex.count('=') == 1
assert latex.count(r'\partial') == 4
def test_repr_latex(self):
container = mm.Dynamics()
check_container(container)
latexstr = container._repr_latex_()
assert latexstr == '$0$'
def test_add_exception(self):
dynamics = mm.Dynamics()
for term in self.invalid_terms:
with pytest.raises(TypeError):
dynamics += term
def test_add_dynamics(self):
term_sum = self.precession + self.damping + self.stt
dynamics = mm.Dynamics()
dynamics += term_sum
assert len(dynamics.terms) == 3
def test_script(self):
dynamics = mm.Dynamics()
with pytest.raises(NotImplementedError):
script = dynamics._script
