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from ase.lattice import RHL
from pathlib import Path
def test_ase_bandstructure(cli, plt):
lat = RHL(3., 70.0)
path = lat.bandpath()
bs = path.free_electron_band_structure()
bs_path = Path('bs.json')
bs.write(bs_path)
fig_path = Path('bs.png')
cli.ase('band-structure', str(bs_path), '--output', str(fig_path))
# If the CLI tool gave a text output, we could verify it.
assert fig_path.is_file()
# Note: We don't have proper testing of --points, --range etc. We
# test here on JSON input but the tool is in principle supposed to
# work on other formats, too (only gpw though as of now though).
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