Failing tests after pint fix, with pint 0.20.1

Getting locally failing unit tests since the pint fix in !282 (merged), with pint v0.20.1.

The dependency is pint >=0.20, !=0.24.0, so my local version should be allowed.

@muellese Any idea?

    def test_cf_units(self):
        self.assertEqual(u("mm"), "mm")
        self.assertEqual(u("millimeter"), "mm")
        self.assertEqual(u("kilometer"), "km")

        self.assertEqual(u("meter ** 2"), "m2")
        self.assertEqual(u("1 / meter"), "m-1")

        self.assertEqual(u("degree_north"), "degrees_north")
        self.assertEqual(u("degree_east"), "degrees_east")

        self.assertEqual(u("°C"), "°C")
        self.assertEqual(u("degC"), "°C")
        self.assertEqual(u("degree_Celsius"), "°C")

>       self.assertEqual(u(""), "1")
E       AssertionError: 'dimensionless' != '1'
E       - dimensionless
E       + 1

tests\data\test_cf_units.py:26: AssertionError

added bug label

changed milestone to %v1.0

Maybe it helps to rewrite the helper function u() like this:

def u(s):
    s_u = fm.UNITS.Unit(s)
    return f"{s_u:cf}"

Related: https://github.com/hgrecco/pint/issues/1486

Seems to be not solvable at the moment. When dropping older pint versions (which we keep for now to support py 3.8), we can re-enable these tests.

Other option: use f"{s_u:~cf}" and compare to empty string.

I would comment out the "dimensionless" tests with a note to the issue above.

removed milestone %v1.0

mentioned in merge request !290 (merged)

changed milestone to %v1.0

added FINAM v1.0 label

mentioned in commit effa98c3

closed with merge request !290 (merged)