moo.shell.tests.test_iac.test_negotiator_mark_unknown_opt_does_not_pollute_capabilities

moo.shell.tests.test_iac.test_negotiator_mark_unknown_opt_does_not_pollute_capabilities()

DO/DONT for an option that has no entry in the label map (e.g. OPT_BINARY) must not write a stray capability key — capabilities only ever holds the documented set.