[TestSuite] Shape of topological data

[lkdvos]

We should add explicit checks to the test suite that

• The shape of the output of e.g. Fsymbol and Rsymbol is compatible with the FusionStyle, i.e. scalar or array.
• The shape of the output of e.g. Fsymbol and Rsymbol is compatible with Nsymbol of specific inputs.