def test_input_exception():
x = Variable([1, 1])
with pytest.raises(ValueError):
exp = F.Exponent()
y = exp(x)
with pytest.raises(ValueError):
sin = F.Sinus()
y = sin(x)
with pytest.raises(ValueError):
cos = F.Cosinus()
y = cos(x)
with pytest.raises(ValueError):
tan = F.Tangent()
y = tan(x)
with pytest.raises(ValueError):
arcsin = F.Arcsin()
y = arcsin(x)
with pytest.raises(ValueError):
arccos = F.Arccos()
y = arccos(x)
with pytest.raises(ValueError):
arctan = F.Arctan()
y = arctan(x)
with pytest.raises(ValueError):
sinh = F.Sinh()
y = sinh(x)
with pytest.raises(ValueError):
cosh = F.Cosh()
y = cosh(x)
with pytest.raises(ValueError):
tanh = F.Tanh()
y = tanh(x)
with pytest.raises(ValueError):
log = F.Log()
y = log(x)
with pytest.raises(ValueError):
logi = F.Logistic()
y = logi(x)
with pytest.raises(ValueError):
sqrt = F.Sqrt()
y = sqrt(x)
def test_tan_exception():
x = ReverseVariable(np.pi / 2)
tan = F.Tangent()
with pytest.raises(ValueError):
y = tan(x)
def test_tan():
x = ReverseVariable(np.pi / 4)
tan = F.Tangent()
y = tan(x)
y.reverse()
assert abs(y.val - 1) < 1e-4 and abs(x.grad - 2) < 1e-4
def test_tan():
x = Variable(np.pi / 4)
tan = F.Tangent()
y = tan(x)
assert abs(y.val - 1) < 1e-4 and abs(y.grad - 2) < 1e-4