DmcsGuards

Non-isotropic constellations, unphysical correlations and out-of-domain inputs

5/5 passed in 1ms

Test	What it does	Result
test_alpha_domain	$\alpha$ of 0, -0.4, 1e-9, 101, NaN or infinity raises ValueError.	✅ pass
test_holevo_domain	A correlation stronger than the marginals carry raises rather than reach a sub-vacuum symplectic eigenvalue that understates Eve, and so does an alphabet entropy that is zero, negative or NaN.	✅ pass
test_rate_domain	Transmittance outside (0, 1], negative excess noise, efficiency outside (0, 1], negative electronic noise and reconciliation efficiency outside [0, 1] each raise a ValueError naming the parameter.	✅ pass
test_size_domain	m outside 3..64 raises ValueError, a two-state constellation not being isotropic, and 3 and 64 are accepted.	✅ pass
test_zstar_clamped	The correlation bound falls with excess noise and clamps at zero rather than going negative, and at $\xi$ up to 1e12 or $T$ down to 1e-12 every component stays finite with a negative rate.	✅ pass