feat: DeviceTypeDriver base class mit FingerprintRule und PortSpec

Neue Zwischenschicht zwischen NetworkDriver und den typ-spezifischen
Basisklassen (FirewallDriver, SwitchDriver, …). Definiert das
Fingerprinting-Interface für den Discovery-Subsystem:

- FingerprintRule (NamedTuple): pattern, weight, mandatory, negative
- PortSpec (NamedTuple): scheme, port, paths, weight, mandatory
- DeviceTypeDriver: VENDOR, DRIVER_NAME, PORT_SPECS, SNMP_OBJECT_ID_PREFIX,
  SNMP_FINGERPRINT, SSH_FINGERPRINT, HTTP_FINGERPRINT

Alle *Driver-Klassen erben jetzt von DeviceTypeDriver statt NetworkDriver.
Transitiv ist NetworkDriver weiterhin in der MRO (keine Breaking Change).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_fingerprint_base.py

@@ -0,0 +1,145 @@
+"""Tests for DeviceTypeDriver, FingerprintRule, and PortSpec."""
+
+from __future__ import annotations
+
+import pytest
+from napalm_device_types import (
+    AccessPointDriver,
+    DeviceTypeDriver,
+    FingerprintRule,
+    FirewallDriver,
+    HypervisorDriver,
+    OSDriver,
+    PortSpec,
+    ResidentialGatewayDriver,
+    StorageDriver,
+    SwitchDriver,
+)
+from napalm.base import NetworkDriver
+
+
+# ── Hierarchy ─────────────────────────────────────────────────────────────────
+
+TYPE_DRIVERS = [
+    AccessPointDriver,
+    FirewallDriver,
+    HypervisorDriver,
+    OSDriver,
+    ResidentialGatewayDriver,
+    StorageDriver,
+    SwitchDriver,
+]
+
+
+@pytest.mark.parametrize("cls", TYPE_DRIVERS)
+def test_type_driver_inherits_device_type_driver(cls):
+    assert issubclass(cls, DeviceTypeDriver)
+
+
+@pytest.mark.parametrize("cls", TYPE_DRIVERS)
+def test_type_driver_inherits_network_driver(cls):
+    """Transitiv: DeviceTypeDriver → NetworkDriver muss erhalten bleiben."""
+    assert issubclass(cls, NetworkDriver)
+
+
+def test_device_type_driver_inherits_network_driver():
+    assert issubclass(DeviceTypeDriver, NetworkDriver)
+
+
+# ── Default attributes ────────────────────────────────────────────────────────
+
+def test_defaults_on_device_type_driver():
+    assert DeviceTypeDriver.VENDOR == ""
+    assert DeviceTypeDriver.DRIVER_NAME == ""
+    assert DeviceTypeDriver.PORT_SPECS is None
+    assert DeviceTypeDriver.SNMP_OBJECT_ID_PREFIX is None
+    assert DeviceTypeDriver.SNMP_FINGERPRINT == []
+    assert DeviceTypeDriver.SSH_FINGERPRINT == []
+    assert DeviceTypeDriver.HTTP_FINGERPRINT == []
+
+
+@pytest.mark.parametrize("cls", TYPE_DRIVERS)
+def test_fingerprint_attributes_inherited(cls):
+    assert hasattr(cls, "HTTP_FINGERPRINT")
+    assert hasattr(cls, "SNMP_FINGERPRINT")
+    assert hasattr(cls, "SSH_FINGERPRINT")
+    assert hasattr(cls, "PORT_SPECS")
+    assert hasattr(cls, "SNMP_OBJECT_ID_PREFIX")
+
+
+# ── FingerprintRule ───────────────────────────────────────────────────────────
+
+def test_fingerprint_rule_defaults():
+    r = FingerprintRule("fritz!box")
+    assert r.pattern == "fritz!box"
+    assert r.weight == 1.0
+    assert r.mandatory is False
+    assert r.negative is False
+
+
+def test_fingerprint_rule_mandatory():
+    r = FingerprintRule("opnsense", weight=8.0, mandatory=True)
+    assert r.mandatory is True
+    assert r.weight == 8.0
+
+
+def test_fingerprint_rule_negative():
+    r = FingerprintRule("pfsense", weight=5.0, negative=True)
+    assert r.negative is True
+
+
+def test_fingerprint_rule_is_immutable():
+    r = FingerprintRule("test", weight=3.0)
+    with pytest.raises(AttributeError):
+        r.weight = 99.0  # type: ignore[misc]
+
+
+# ── PortSpec ──────────────────────────────────────────────────────────────────
+
+def test_port_spec_defaults():
+    p = PortSpec("https", 8006)
+    assert p.scheme == "https"
+    assert p.port == 8006
+    assert p.paths == ("/",)
+    assert p.weight == 5.0
+    assert p.mandatory is False
+
+
+def test_port_spec_mandatory():
+    p = PortSpec("http", 1400, ("/xml/device_description.xml",), weight=9.0, mandatory=True)
+    assert p.mandatory is True
+    assert p.paths == ("/xml/device_description.xml",)
+
+
+def test_port_spec_is_immutable():
+    p = PortSpec("http", 80)
+    with pytest.raises(AttributeError):
+        p.port = 8080  # type: ignore[misc]
+
+
+# ── Concrete driver subclass ──────────────────────────────────────────────────
+
+def test_concrete_driver_overrides_fingerprint():
+    class MyDriver(FirewallDriver):
+        VENDOR = "Acme"
+        DRIVER_NAME = "acme"
+        HTTP_FINGERPRINT = [FingerprintRule("acme portal", weight=9.0, mandatory=True)]
+        PORT_SPECS = [PortSpec("https", 9443, weight=7.0)]
+
+    assert MyDriver.VENDOR == "Acme"
+    assert MyDriver.HTTP_FINGERPRINT[0].pattern == "acme portal"
+    assert MyDriver.PORT_SPECS[0].port == 9443
+    # base class unaffected
+    assert FirewallDriver.HTTP_FINGERPRINT == []
+    assert FirewallDriver.PORT_SPECS is None
+
+
+def test_type_label_unaffected_by_refactor():
+    """TYPE_LABEL muss nach dem Refactoring noch korrekt sein."""
+    assert FirewallDriver.TYPE_LABEL == "Firewall"
+    assert SwitchDriver.TYPE_LABEL == "Switch"
+    assert ResidentialGatewayDriver.TYPE_LABEL == "Gateway"
+    assert HypervisorDriver.TYPE_LABEL == "Hypervisor"
+    assert OSDriver.TYPE_LABEL == "OS"
+    assert StorageDriver.TYPE_LABEL == "Storage"
+    assert AccessPointDriver.TYPE_LABEL == "Access Point"