def test_with_static_range_and_units(self):
f = Float(setter=True,
range=FloatRangeValidator(-1.0, 1.0, 0.01, unit='V'))
u = get_unit_registry()
assert f.pre_set(None, 0.1) == 0.1
with raises(ValueError):
f.pre_set(None, -2.0)
assert f.pre_set(None, u.parse_expression('10 mV')) == 10.
with raises(ValueError):
f.pre_set(None, u.parse_expression('0.1 mV'))
def test_with_dynamic_range_and_units(self):
class RangeHolder(Parent):
n = 0.0
def _range_test(self):
self.n += 100
return FloatRangeValidator(-1000., 1000., step=self.n,
unit='mV')
o = RangeHolder()
f = Float(setter=True, range='test', unit='V')
assert f.pre_set(o, .1) == 0.1
with raises(ValueError):
f.pre_set(o, -5)
o.discard_range('test')
with raises(ValueError):
f.pre_set(o, 0.1)
u = get_unit_registry()
assert f.pre_set(o, u.parse_expression('200 mV')) == 0.2
with raises(ValueError):
f.pre_set(o, u.parse_expression('100 mV'))
def test_set_with_dynamic_range(self):
class RangeHolder(Parent):
n = 0.1
def _range_test(self):
self.n += .1
return FloatRangeValidator(0.0, step=self.n)
o = RangeHolder()
f = Float(setter=True, range='test')
assert f.pre_set(o, .2)
with raises(ValueError):
f.pre_set(o, -0.5)
o.discard_range('test')
with raises(ValueError):
f.pre_set(o, 0.2)
def test_set_with_static_range(self):
f = Float(setter=True, range=FloatRangeValidator(0.0))
assert f.pre_set(None, 0.1) == 0.1
with raises(ValueError):
f.pre_set(None, -1.0)
def test_post_get_with_unit(self):
f = Float(unit='V')
assert hasattr(f.post_get(None, 0.1), 'magnitude')
assert f.post_get(None, 0.1).to('mV').magnitude == 100.
def test_post_get(self):
f = Float()
assert f.post_get(None, '0.1') == 0.1
def test_set_with_unit(self):
f = Float(setter=True, unit='mV')
u = get_unit_registry()
assert f.pre_set(None, u.parse_expression('10 V')) == 10000.