def test_settemp_cell():
"""
Test setTemp method for a wide range of temperatures.
Test added after implementing Isat2 as Isat2(Tcell)
"""
pvc = PVcell()
Pmp_arr = []
Vmp_arr = []
Voc_arr = []
Isc_arr = []
temps = [-85, -60, -40, -25, 0, 25, 40, 60, 85]
for t in temps:
pvc.Tcell = float(t) + 273.15
Pmp_arr.append(pvc.Pcell.max())
Vmp_arr.append(pvc.Vcell[pvc.Pcell.argmax()])
Voc_arr.append(pvc.calcVcell(0))
Isc_arr.append(pvc.Isc)
assert(np.all(np.gradient(np.squeeze(Vmp_arr)) < 0))
assert(np.all(np.gradient(np.squeeze(Voc_arr)) < 0))
assert(np.all(np.gradient(Isc_arr) > 0))
def test_pvcell_calc_vcell():
pvc = PVcell()
ok_(np.isclose(pvc.Vcell[123], pvc.calcVcell(pvc.Icell[123]), 1e-4))
ok_(np.isclose(pvc.Vcell[153], pvc.calcVcell(pvc.Icell[153]), 1e-4))
ok_(np.isclose(pvc.Vcell[183], pvc.calcVcell(pvc.Icell[183])))
