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+"""Tests for the P2S/X2D left auxiliary part cooling fan (#2576).
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+
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+The "Auxiliary Part Cooling Fan - Left" (also fits X2D) is reported ONLY as
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+device.airduct part with raw id 160 (decoded id = 160 >> 4 = 10,
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+AIR_FUN.FAN_REMOTE_COOLING_1 in Bambu Studio) — the firmware does NOT mirror
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+it into any flat big_fanX_speed field, which is why it was previously dropped.
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+It is controlled with "M106 P10", exactly like Bambu's official P2S machine-
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+profile gcode does.
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+
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+The airduct payloads below are verbatim captures from a live P2S
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+(fw 01.02.00.00) with the accessory installed.
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+"""
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+
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+import pytest
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+
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+
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+@pytest.fixture
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+def mqtt_client():
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+ from backend.app.services.bambu_mqtt import BambuMQTTClient
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+
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+ return BambuMQTTClient(
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+ ip_address="192.168.1.100",
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+ serial_number="TESTP2S",
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+ access_code="12345678",
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+ )
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+
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+
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+def _airduct_device(parts):
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+ """Wrap airduct parts in the device envelope as pushed by a P2S."""
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+ return {
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+ "device": {
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+ "airduct": {
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+ "modeCur": 0,
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+ "modeFunc": 0,
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+ "modeList": [
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+ {"ctrl": [16, 32, 160, 48], "modeId": 0, "off": []},
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+ {"ctrl": [16, 32, 48], "modeId": 1, "off": [160]},
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+ ],
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+ "modeVisable": 7,
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+ "parts": parts,
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+ "subFunc": 0,
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+ "subMode": 0,
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+ "subVisable": 7,
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+ "version": 1,
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+ },
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+ "type": 1,
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+ }
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+ }
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+
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+
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+# Verbatim parts list from a live P2S: part cooling ramping (state 30,
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+# target 90), right aux at 40%, left aux OFF, chamber at 70%.
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+P2S_PARTS_LEFT_AUX_OFF = [
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+ {"func": 0, "id": 16, "range": 6553600, "state": 30, "tar_state": 90},
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+ {"func": 6, "id": 32, "range": 6553600, "state": 40, "tar_state": 40},
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+ {"func": 5, "id": 160, "range": 6553600, "state": 0, "tar_state": 0},
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+ {"func": 2, "id": 48, "range": 6553600, "state": 70, "tar_state": 70},
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+]
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+
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+# Same printer later in the print: left aux running at 80%.
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+P2S_PARTS_LEFT_AUX_80 = [
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+ {"func": 0, "id": 16, "range": 6553600, "state": 60, "tar_state": 60},
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+ {"func": 6, "id": 32, "range": 6553600, "state": 100, "tar_state": 100},
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+ {"func": 5, "id": 160, "range": 6553600, "state": 80, "tar_state": 80},
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+ {"func": 2, "id": 48, "range": 6553600, "state": 80, "tar_state": 80},
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+]
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+
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+
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+class TestLeftAuxFanParsing:
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+ """device.airduct part id 10 (raw 160) -> state.left_aux_fan_speed."""
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+
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+ def test_defaults_to_none(self, mqtt_client):
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+ assert mqtt_client.state.left_aux_fan_speed is None
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+
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+ def test_parses_left_aux_running(self, mqtt_client):
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+ mqtt_client._update_state(_airduct_device(P2S_PARTS_LEFT_AUX_80))
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+ assert mqtt_client.state.left_aux_fan_speed == 80
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+
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+ def test_parses_left_aux_off(self, mqtt_client):
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+ mqtt_client._update_state(_airduct_device(P2S_PARTS_LEFT_AUX_OFF))
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+ assert mqtt_client.state.left_aux_fan_speed == 0
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+
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+ def test_raw_id_is_bit_unpacked(self, mqtt_client):
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+ """Raw id 160 must decode to part id 10 (id >> 4), NOT match on 160."""
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+ # A hypothetical raw id of 10 would decode to part id 0 — must not match.
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+ parts = [{"func": 5, "id": 10, "range": 6553600, "state": 50, "tar_state": 50}]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.left_aux_fan_speed is None
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+
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+ def test_parts_without_left_aux_reports_none(self, mqtt_client):
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+ """A full parts list without id 10 means the fan is not installed."""
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+ mqtt_client.state.left_aux_fan_speed = 80 # previously seen
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+ parts = [p for p in P2S_PARTS_LEFT_AUX_80 if p["id"] != 160]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.left_aux_fan_speed is None
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+
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+ def test_diff_push_without_device_preserves_value(self, mqtt_client):
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+ """P-series diff pushes omit device.airduct — value must survive."""
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+ mqtt_client._update_state(_airduct_device(P2S_PARTS_LEFT_AUX_80))
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+ mqtt_client._update_state({"nozzle_temper": 250.0})
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+ assert mqtt_client.state.left_aux_fan_speed == 80
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+
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+ def test_state_clamped_to_0_100(self, mqtt_client):
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+ parts = [{"func": 5, "id": 160, "range": 6553600, "state": 250, "tar_state": 0}]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.left_aux_fan_speed == 100
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+
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+ def test_malformed_part_entries_ignored(self, mqtt_client):
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+ parts = [
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+ "not-a-dict",
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+ {"func": 5}, # no id/state
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+ {"id": "garbage", "state": 10},
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+ {"func": 5, "id": 160, "range": 6553600, "state": 30, "tar_state": 30},
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+ ]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.left_aux_fan_speed == 30
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+
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+ def test_flat_fan_fields_unaffected(self, mqtt_client):
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+ """Regression: flat fields keep coming from the flat MQTT keys."""
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+ payload = {
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+ "cooling_fan_speed": "4",
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+ "big_fan1_speed": "6",
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+ "big_fan2_speed": "10",
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+ "heatbreak_fan_speed": "14",
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+ **_airduct_device(P2S_PARTS_LEFT_AUX_OFF),
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+ }
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+ mqtt_client._update_state(payload)
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+ assert mqtt_client.state.cooling_fan_speed == 27 # 4/15
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+ assert mqtt_client.state.big_fan1_speed == 40 # 6/15
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+ assert mqtt_client.state.big_fan2_speed == 67 # 10/15
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+ assert mqtt_client.state.heatbreak_fan_speed == 93 # 14/15
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+ assert mqtt_client.state.left_aux_fan_speed == 0
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+
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+
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+class TestExhaustFanPresence:
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+ """device.airduct part id 3 (raw 48) presence -> state.exhaust_fan_present.
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+
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+ The chamber exhaust fan is a P2S/X2D add-on kit (get_version module "eef").
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+ Its speed rides on the flat big_fan2_speed field, but the airduct only lists
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+ part id 3 when the kit is physically installed — so part-3 presence is the
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+ signal the UI uses to show/hide the Exhaust tile.
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+ """
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+
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+ def test_defaults_to_false(self, mqtt_client):
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+ assert mqtt_client.state.exhaust_fan_present is False
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+
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+ def test_present_when_part_3_reported(self, mqtt_client):
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+ # Full P2S parts list includes id 48 (>>4 = 3).
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+ mqtt_client._update_state(_airduct_device(P2S_PARTS_LEFT_AUX_80))
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+ assert mqtt_client.state.exhaust_fan_present is True
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+
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+ def test_absent_when_part_3_missing(self, mqtt_client):
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+ mqtt_client.state.exhaust_fan_present = True # previously seen
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+ parts = [p for p in P2S_PARTS_LEFT_AUX_80 if p["id"] != 48]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.exhaust_fan_present is False
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+
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+ def test_base_p2s_only_part_cooling_and_aux(self, mqtt_client):
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+ # A base P2S (no exhaust kit, no left aux kit) lists only ids 1 and 2.
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+ parts = [
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+ {"func": 0, "id": 16, "range": 6553600, "state": 0, "tar_state": 0},
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+ {"func": 6, "id": 32, "range": 6553600, "state": 0, "tar_state": 0},
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+ ]
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+ mqtt_client._update_state(_airduct_device(parts))
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+ assert mqtt_client.state.exhaust_fan_present is False
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+ assert mqtt_client.state.left_aux_fan_speed is None
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+
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+ def test_diff_push_without_device_preserves_value(self, mqtt_client):
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+ mqtt_client._update_state(_airduct_device(P2S_PARTS_LEFT_AUX_80))
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+ mqtt_client._update_state({"nozzle_temper": 250.0})
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+ assert mqtt_client.state.exhaust_fan_present is True
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+
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+
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+class TestLeftAuxFanCommand:
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+ """set_fan_speed must accept index 10 and emit M106 P10."""
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+
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+ def test_set_fan_speed_10_sends_m106_p10(self, mqtt_client, monkeypatch):
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+ sent = []
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+ monkeypatch.setattr(mqtt_client, "send_gcode", lambda g: sent.append(g) or True)
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+ assert mqtt_client.set_fan_speed(10, 204) is True
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+ assert sent == ["M106 P10 S204"]
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+
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+ def test_set_left_aux_fan_helper(self, mqtt_client, monkeypatch):
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+ sent = []
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+ monkeypatch.setattr(mqtt_client, "send_gcode", lambda g: sent.append(g) or True)
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+ assert mqtt_client.set_left_aux_fan(255) is True
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+ assert sent == ["M106 P10 S255"]
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+
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+ def test_speed_clamped_to_255(self, mqtt_client, monkeypatch):
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+ sent = []
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+ monkeypatch.setattr(mqtt_client, "send_gcode", lambda g: sent.append(g) or True)
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+ mqtt_client.set_left_aux_fan(999)
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+ assert sent == ["M106 P10 S255"]
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+
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+ def test_invalid_fan_index_rejected(self, mqtt_client, monkeypatch):
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+ sent = []
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+ monkeypatch.setattr(mqtt_client, "send_gcode", lambda g: sent.append(g) or True)
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+ assert mqtt_client.set_fan_speed(4, 100) is False
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+ assert mqtt_client.set_fan_speed(11, 100) is False
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+ assert sent == []
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+
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+ def test_existing_fan_indexes_still_accepted(self, mqtt_client, monkeypatch):
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+ sent = []
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+ monkeypatch.setattr(mqtt_client, "send_gcode", lambda g: sent.append(g) or True)
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+ for idx in (1, 2, 3):
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+ assert mqtt_client.set_fan_speed(idx, 128) is True
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+ assert sent == ["M106 P1 S128", "M106 P2 S128", "M106 P3 S128"]
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Gabe