def test_conversions():
"""Check numbers' conversions."""
i = Number(6, unit='m')
j = i.converted_to('cm')
assert str(j.unit) == 'cm'
assert j.uiprinted == '600 cm'
i = Number('0.25', unit='kg')
j = i.converted_to('kg')
assert str(j.unit) == 'kg'
assert j.uiprinted == '0.25 kg'
i = Number('1.096', unit='L')
j = i.converted_to('hL')
assert str(j.unit) == 'hL'
assert j.uiprinted == '0.01096 hL'
def test_convert_dL_to_cm3():
"""Check conversions between volume units."""
i = Number(6, unit='dL')
j = i.converted_to(Unit('cm', exponent=3))
assert j == Number(600, unit=Unit('cm', exponent=3))
def test_convert_mL_to_dm3():
"""Check conversions between volume units."""
i = Number(6, unit='mL')
j = i.converted_to(Unit('dm', exponent=3))
assert j == Number(0.006, unit=Unit('dm', exponent=3))
def test_convert_dm3_to_mL():
"""Check conversions between volume units."""
i = Number(6, unit=Unit('dm', exponent=3))
j = i.converted_to('mL')
assert j == Number(6000, unit='mL')
def test_convert_volume_to_geater_unit():
"""Check conversions between volume units."""
i = Number(6, unit=Unit('dm', exponent=3))
j = i.converted_to(Unit('m', exponent=3))
assert j == Number(0.006, unit=Unit('m', exponent=3))
def test_convert_area_to_greater_unit():
"""Check conversions between area units."""
i = Number(6, unit=Unit('dm', exponent=2))
j = i.converted_to(Unit('m', exponent=2))
assert j == Number(0.06, unit=Unit('m', exponent=2))
def test_conversions_errors():
"""Check numbers' conversions errors."""
i = Number(6, unit='m')
with pytest.raises(TypeError) as excinfo:
i.converted_to('g')
assert str(excinfo.value) == 'Cannot convert 6 m into g.'