def test_sir_logistic_policy(penn_chime_setup, sir_data_w_policy):
"""Compares local SIR against penn_chime SIR for implemented social policies
where policies are implemented as a logistic function
"""
p, sir = penn_chime_setup
x, pars = sir_data_w_policy
policies = sir.gen_policy(p)
# Set up logistic function to match policies (Sharp decay)
pars["beta"] = policies[0][0] * p.population
## This are new parameters needed by one_minus_logistic_fcn
pars["L"] = 1 - policies[1][0] / policies[0][0]
pars["x0"] = policies[0][1] - 0.5
pars["k"] = 1.0e7
def update_parameters(ddate, **kwargs):
xx = (ddate - x["dates"][0]).days
ppars = kwargs.copy()
ppars["beta"] = kwargs["beta"] * one_minus_logistic_fcn(
xx,
L=kwargs["L"],
k=kwargs["k"],
x0=kwargs["x0"],
)
return ppars
sir_model = SIRModel(update_parameters=update_parameters)
predictions = sir_model.propagate_uncertainties(x, pars)
assert_frame_equal(
sir.raw_df.set_index("date").rename(
columns=COLUMN_MAP)[COLS_TO_COMPARE].fillna(0),
predictions[COLS_TO_COMPARE],
)
def test_compare_sir_vs_seir(sir_data_wo_policy, seir_data, monkeypatch):
"""Checks if SEIR and SIR return same results if the code enforces
* alpha = gamma
* E = 0
* dI = dE
"""
x_sir, pars_sir = sir_data_wo_policy
x_seir, pars_seir = seir_data
pars_seir["alpha"] = pars_sir["gamma"] # will be done by hand
def mocked_seir_step(data, **pars):
data["exposed"] = 0
new_data = SEIRModel.simulation_step(data, **pars)
new_data["infected"] += new_data["exposed_new"]
return new_data
seir_model = SEIRModel()
monkeypatch.setattr(seir_model, "simulation_step", mocked_seir_step)
sir_model = SIRModel()
predictions_sir = sir_model.propagate_uncertainties(x_sir, pars_sir)
predictions_seir = seir_model.propagate_uncertainties(x_seir, pars_seir)
assert_frame_equal(
predictions_sir[COLS_TO_COMPARE], predictions_seir[COLS_TO_COMPARE],
)
def test_sir_vs_penn_chime_no_policies(penn_chime_raw_df_no_policy,
sir_data_wo_policy):
"""Compares local SIR against penn_chime SIR for no social policies
"""
x, pars = sir_data_wo_policy
sir_model = SIRModel()
predictions = sir_model.propagate_uncertainties(x, pars)
assert_frame_equal(
penn_chime_raw_df_no_policy.rename(
columns=COLUMN_MAP)[COLS_TO_COMPARE],
predictions[COLS_TO_COMPARE],
)
def test_sir_type_conversion(sir_data_w_policy):
"""Compares local SIR run with set gamma vs set with recovery_days
"""
x, pars = sir_data_w_policy
sir_model = SIRModel()
predictions = sir_model.propagate_uncertainties(x, pars)
pars["recovery_days"] = 1 / pars.pop("gamma")
new_predictions = sir_model.propagate_uncertainties(x, pars)
assert_frame_equal(
predictions,
new_predictions,
)
def test_conserved_n(sir_data_wo_policy):
"""Checks if S + I + R is conserved for local SIR
"""
x, pars = sir_data_wo_policy
sir_model = SIRModel()
n_total = 0
for key in sir_model.compartments:
n_total += pars[f"initial_{key}"]
predictions = sir_model.propagate_uncertainties(x, pars)
n_computed = predictions[sir_model.compartments].sum(axis=1)
n_expected = Series(data=[n_total] * len(n_computed),
index=n_computed.index)
assert_series_equal(n_expected, n_computed)
def test_sir_vs_penn_chime_w_policies(penn_chime_setup, sir_data_w_policy):
"""Compares local SIR against penn_chime SIR for with social policies
"""
p, sir = penn_chime_setup
x, pars = sir_data_w_policy
policies = sir.gen_policy(p)
new_policy_date = x["dates"][0] + timedelta(days=policies[0][1])
beta0, beta1 = policies[0][0], policies[1][0]
def update_parameters(ddate, **pars): # pylint: disable=W0613
pars["beta"] = (beta0
if ddate < new_policy_date else beta1) * p.population
return pars
sir_model = SIRModel(update_parameters=update_parameters)
predictions = sir_model.propagate_uncertainties(x, pars)
assert_frame_equal(
sir.raw_df.set_index("date").fillna(0).rename(
columns=COLUMN_MAP)[COLS_TO_COMPARE],
predictions[COLS_TO_COMPARE],
)
