"""Unit tests for mapping config-defined SNMP devices onto a Steward host."""
from plugins.snmp.routes import _devices_for_host

_CFG = [
    {"name": "core-switch", "host": "192.168.1.1"},
    {"name": "ups", "host": "192.168.1.10"},
    {"name": "by-name", "host": "edge-router"},
    "not-a-dict",                     # tolerated, skipped
    {"name": "no-host"},              # no host → never matches
]


def test_matches_by_address():
    out = _devices_for_host(_CFG, "192.168.1.1", "somehost")
    assert [d["name"] for d in out] == ["core-switch"]


def test_matches_by_name_case_insensitive():
    out = _devices_for_host(_CFG, "10.0.0.9", "Edge-Router")
    assert [d["name"] for d in out] == ["by-name"]


def test_no_match_returns_empty():
    assert _devices_for_host(_CFG, "10.0.0.1", "nope") == []


def test_blank_address_and_name_match_nothing():
    # A host with no address/name must not match a device with a blank host.
    assert _devices_for_host(_CFG, "", None) == []