Four code-paths that weren't tested are simply those with the
parameters swapped from code-paths we did test. In any case, the
float-distance between values should be symmetric, so test that.
Task-number: QTBUG-88183
Change-Id: I2060eb77b1abada5b0fd5f4557dbb1761c5cfd02
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>