A previous pull request added support for flexible decimal characters
when editing money amounts.
https://github.com/openfoodfoundation/openfoodnetwork/pull/1831
This pull request applies the same principle to the weight calculator
which was missed in the previous pull request.
This conversion is done by Transpec 3.3.0 with the following command:
transpec spec/models/calculator/weight_spec.rb
* 3 conversions
from: == expected
to: eq(expected)
* 3 conversions
from: obj.should
to: expect(obj).to
For more details: https://github.com/yujinakayama/transpec#supported-conversions
