def test_tabulated_failures(self):
with self.assertRaisesRegex(ValueError, 'do not match'):
ct.TabulatedFunction(range(2), range(3))
with self.assertRaisesRegex(ValueError, 'must not be empty'):
ct.TabulatedFunction([], [])
with self.assertRaisesRegex(ct.CanteraError, 'monotonically'):
ct.TabulatedFunction((0, 1, 0.5, 2), (2, 1, 1, 0))
with self.assertRaisesRegex(ct.CanteraError, 'not implemented'):
ct.TabulatedFunction((0, 1, 1, 2), (2, 1, 1, 0),
method='not implemented')
def test_tabulated1(self):
arr = np.array([[0, 2], [1, 1], [2, 0]])
time = arr[:, 0]
fval = arr[:, 1]
fcn = ct.TabulatedFunction(time, fval)
for t, f in zip(time, fval):
self.assertNear(f, fcn(t))
def test_tabulated4(self):
time = np.array([0, 1, 2])
fval = np.array([2, 1, 0])
fcn = ct.TabulatedFunction(time, fval)
tt = .5 * (time[1:] + time[:-1])
ff = .5 * (fval[1:] + fval[:-1])
for t, f in zip(tt, ff):
self.assertNear(f, fcn(t))
def test_tabulated3(self):
time = 0, 1, 2,
fval = 2, 1, 0,
fcn = ct.TabulatedFunction(time, fval)
self.assertNear(fcn(-1), fval[0])
self.assertNear(fcn(3), fval[-1])
def test_tabulated2(self):
time = [0, 1, 2]
fval = [2, 1, 0]
fcn = ct.TabulatedFunction(time, fval)
for t, f in zip(time, fval):
self.assertNear(f, fcn(t))
def test_tabulated5(self):
time = [0, 1, 2]
fval = [2, 1, 0]
fcn = ct.TabulatedFunction(time, fval, method='previous')
val = np.array([fcn(v) for v in [-0.5, 0, 0.5, 1.5, 2, 2.5]])
self.assertArrayNear(val, np.array([2.0, 2.0, 2.0, 1.0, 0.0, 0.0]))
