More tests

[carstenbauer]

• Fermion measurements
  • [x] ETGF
  • [x] ETPC and ZFPC
  • [x] ETCDC and ZFCDC
  • [x] permute_greens
  • [x] fft_greens
• Boson measurements
  • [x] chi_dyn
  • [x] chi_static
  • [x] binder
  • [x] get_frequencies_and_momenta
• LinAlg
  • [ ] inv_one_plus_two_udts! etc.

O(2) / O(1) tests

• [ ] get core files like interactions.jl, lattice.jl etc. to ~100%

NNhoppings tests

• [ ] start with lattice.jl

Generic checkerboard tests

[carstenbauer]

• [ ] Refactor stuff in test_stacks (in fermion_measurements.jl) to regular tests.

[carstenbauer]

ED with interactions can't go into tests because we'd have to perform DQMC for it (takes too long)