Files
forgefirm/forgetest/tests/test_baseline.py
T
ScottW514 8fc5250d6d XY microstep modes: the baseline, the catalog test and the bench tools
The baseline derives x/y_mode, step_freq, ramp_rate and the configured
markers from the xy_microsteps setting; ramp_rate joins the GRBL
controller's set (the driver writes it; the cloud client runs at the
module's). motion.microstep-modes cycles 8, 16 and 32: the save restarts
the idle controller, the kernel reads the mode with its tick and ramp,
$100/$101 are the mode's and a typed $100 is overwritten, a 40 mm jog at
top speed returns to Idle with the kernel counters over the mode agreeing
with the commanded travel and the accelerometer seeing the head move; the
setting is put back as found.

Bench tools: xy_mode_test.py (the null-sink harness the grblHAL CI runs),
raster_dry.py (a top-speed raster per mode), xy_pattern_accel.py (the
operator's pattern from home with the machine silent and the head
accelerometer listening), arc_tolerance_sweep.py (a $12 ladder on the 9
in circle: the chord rate the protocol loop feeds, about 300 a second, is
the ceiling, not the core), and the xymode and xycircle live drills.
BRINGUP carries the present state and the facts; CAMPAIGN-LOG the dated
record, including the planner-blocks spin (a $398 of 255 or more loops
forever at start, a core bug) and its recovery.
2026-09-07 18:05:28 -04:00

524 lines
24 KiB
Python

"""The baseline: fixed resting values are restored, preserved values are
handed back, every deviation is a recorded leftover. Runs against a fake
sysfs tree; forgectrl is unreachable (service-side checks skip)."""
import json
import os
import shutil
import struct
import tempfile
import unittest
from forgetest import baseline
class BaselineTests(unittest.TestCase):
def setUp(self):
self.tmp = tempfile.mkdtemp(prefix="forgetest-bl-")
self.sysfs = os.path.join(self.tmp, "sysfs") + os.sep
self.leds = os.path.join(self.tmp, "leds") + os.sep
for group in ("cnc", "pic", "head", "thermal"):
os.makedirs(self.sysfs + group)
for name in baseline.BUTTON_LEDS + ("lid_led",):
os.makedirs(self.leds + name)
self._led(name, "0")
# a clean machine
for attr, val in baseline.FIXED_SYSFS + baseline.IDLE_READBACKS:
self._attr(attr, val)
self._attr("cnc/interlock_circuit", "45")
self._attr("pic/lid_led", "0")
self._pos(0, 0, 0)
os.environ["GF_SYSFS_ROOT"] = self.sysfs
os.environ["GF_LEDS_ROOT"] = self.leds
os.environ["FORGECTRL_URL"] = "http://127.0.0.1:1" # nothing listens
baseline.Baseline._unreachable_until = 0.0
self.lines = []
def tearDown(self):
shutil.rmtree(self.tmp, ignore_errors=True)
for k in ("GF_SYSFS_ROOT", "GF_LEDS_ROOT", "FORGECTRL_URL"):
os.environ.pop(k, None)
def _attr(self, attr, val):
with open(self.sysfs + attr, "w") as f:
f.write(str(val))
def _read(self, attr):
with open(self.sysfs + attr) as f:
return f.read().strip()
def _led(self, name, val):
with open(self.leds + name + "/brightness", "w") as f:
f.write(val)
# the class interface writes 'target'; the fake mirrors it into brightness
# only when the test asks (see _sync_leds)
def _sync_leds(self):
for name in baseline.BUTTON_LEDS:
p = self.leds + name + "/target"
if os.path.exists(p):
with open(p) as f:
v = f.read().strip()
with open(self.leds + name + "/brightness", "w") as f:
f.write(v)
def _pos(self, x, y, z):
with open(self.sysfs + "cnc/position", "wb") as f:
f.write(struct.pack("<5i", x, y, z, 0, 0))
def bl(self):
return baseline.Baseline(self.lines.append)
def test_clean_machine_has_no_leftovers(self):
left = self.bl().enforce("pre", captured=None)
self.assertEqual(left, [])
self.assertTrue(any("pre: clean" in l for l in self.lines))
def test_fixed_values_are_restored_and_recorded(self):
self._attr("cnc/motor_lock", "15")
self._attr("cnc/step_freq", "10000")
self._attr("cnc/streaming", "1")
left = self.bl().enforce("post", captured=None)
items = {x.item: x for x in left}
self.assertEqual(set(items), {"cnc/motor_lock", "cnc/step_freq", "cnc/streaming"})
for x in left:
self.assertEqual(x.action, "restored", str(x))
self.assertEqual(self._read("cnc/motor_lock"), "0")
self.assertEqual(self._read("cnc/step_freq"), "28160")
self.assertEqual(self._read("cnc/streaming"), "0")
self.assertEqual(items["cnc/motor_lock"].found, "15")
self.assertEqual(items["cnc/motor_lock"].expected, "0")
def test_unlocked_latch_is_relocked(self):
self._attr("cnc/interlock_circuit", "5") # bit 3 clear = unlocked
left = self.bl().enforce("post", captured=None)
self.assertEqual([x.item for x in left], ["laser_latch"])
self.assertEqual(self._read("cnc/laser_latch"), "1")
def test_readonly_deviation_is_unrestorable(self):
self._attr("cnc/state", "disabled")
left = self.bl().enforce("post", captured=None)
self.assertEqual([(x.item, x.action) for x in left], [("cnc/state", "unrestorable")])
def test_button_leds_are_turned_off(self):
self._led("button_led_2", "255")
left = self.bl().enforce("post", captured=None)
self.assertEqual([x.item for x in left], ["leds/button_led_2"])
self._sync_leds()
self.assertEqual(baseline.read_led("button_led_2"), "0")
def test_preserved_position(self):
b = self.bl()
cap = b.capture()
self.assertEqual(cap["position"], [0, 0, 0])
# the run shifted the counters
self._pos(1000, 0, 0)
left = b.enforce("post", captured=cap)
items = {x.item: x for x in left}
self.assertEqual(set(items), {"position"})
# no GRBL controller on the host: the head cannot be jogged back
self.assertTrue(items["position"].action.startswith("unrestorable"), items["position"].action)
self.assertEqual(items["position"].found, [1000, 0, 0])
def test_a_held_controller_is_reset_before_the_return_jog(self):
# a pause test that failed while held leaves the controller in
# Hold, which refuses a jog: the baseline resets out of it first
import helpers
fc = helpers.FakeForgectrl().start()
dev = helpers.FakeGrbl().start()
try:
dev.state = "Hold:0"
dev.reset_to = "Idle"
dev.on_command = lambda line: self._pos(0, 0, 0) if line.startswith("$J=") else None
b = self.bl()
cap = b.capture()
self._pos(221, 0, 0) # 4.144 mm into the held move
left = b.enforce("post", captured=cap)
items = {x.item: x for x in left}
self.assertTrue(items["position"].action.startswith("restored"), items["position"].action)
self.assertEqual(dev.sent[0], "^X")
jogs = [l for l in dev.sent if l.startswith("$J=")]
self.assertEqual(len(jogs), 1)
self.assertIn("X-4.144", jogs[0])
self.assertTrue(any("reset out of Hold:0" in l for l in self.lines), self.lines)
finally:
dev.stop()
fc.stop()
for k in ("GRBL_HOST", "GRBL_PORT"):
os.environ.pop(k, None)
def _pos_bytes(self, x, y, z, processed, total):
with open(self.sysfs + "cnc/position", "wb") as f:
f.write(struct.pack("<3i2I", x, y, z, processed, total))
def test_ring_residue_is_a_leftover_and_blocks_the_return_jog(self):
b = self.bl()
cap = b.capture()
# the run left 40 unplayed bytes queued in the kernel ring and the
# head 1000 counts out: the residue is reported, and the return jog
# is refused (it would replay the residue first)
self._pos_bytes(1000, 0, 0, 100, 140)
left = b.enforce("post", captured=cap)
items = {x.item: x for x in left}
self.assertIn("pulse ring", items)
self.assertEqual(items["pulse ring"].found, "40 unplayed bytes")
self.assertIn("unplayed bytes queued", items["position"].action)
self.assertEqual(baseline.read_ring_residue(), 40)
def test_clean_ring_reads_zero_residue(self):
self.assertEqual(baseline.read_ring_residue(), 0)
def test_lamp_needs_forgectrl(self):
# the lamp's idle level comes from forgectrl's settings: without the
# daemon there is nothing to compare against
self._attr("pic/lid_led", "77")
left = self.bl().enforce("pre", captured=None)
self.assertEqual(left, [])
self.assertEqual(self._read("pic/lid_led"), "77")
def test_no_sysfs_means_skip(self):
os.environ["GF_SYSFS_ROOT"] = os.path.join(self.tmp, "nope") + os.sep
left = self.bl().enforce("pre", captured=None)
self.assertEqual(left, [])
self.assertTrue(any("kernel sysfs not present" in l for l in self.lines))
def test_boot_reference_needs_a_recent_boot(self):
os.environ["FORGETEST_BOOT_ID"] = "test-boot"
try:
# no reference file, uptime unknown on a host without /proc/uptime,
# or too old: None, with the reason logged
ref = baseline.boot_reference(self.lines.append, self.tmp)
up = baseline.uptime_s()
if up is None or up > baseline.BOOT_MAX_AGE_S:
self.assertIsNone(ref)
self.assertTrue(any("no fresh-boot reference" in l for l in self.lines))
else:
# a young host: the reference is taken from the fake tree
self.assertIsNotNone(ref)
self.assertEqual(ref["sysfs"]["cnc/motor_lock"], "0")
self.assertTrue(os.path.exists(os.path.join(self.tmp, "boot-test-boot.json")))
# and loaded back the second time
self.lines[:] = []
ref2 = baseline.boot_reference(self.lines.append, self.tmp)
self.assertEqual(ref2["ts"], ref["ts"])
self.assertTrue(any("reference loaded" in l for l in self.lines))
finally:
os.environ.pop("FORGETEST_BOOT_ID", None)
def test_fixed_constants_checked_against_a_dump(self):
ref = {"sysfs": {"cnc/motor_lock": "0", "cnc/step_freq": "10000"}}
diffs = baseline.check_fixed_against(ref, self.lines.append)
self.assertEqual(diffs, ["cnc/step_freq: boot=10000 constant=28160"])
# -- the reference is taken after the controller applied its config -----
def _probe_state(self):
# what the kernel shows between the supervisor's motion probe and
# the GRBL controller's init writes
self._attr("cnc/motor_lock", "0")
self._attr("cnc/step_freq", "10000")
self._attr("cnc/y_mode", "1")
def test_wait_configured_returns_once_the_controller_wrote_its_config(self):
self._probe_state()
calls = {"n": 0}
def sleep(_s):
calls["n"] += 1
if calls["n"] == 3: # the controller's init writes land
for attr, val in baseline.CONFIGURED_MARKERS:
self._attr(attr, val)
ok = baseline.wait_controller_configured(
self.lines.append, {"controller": "running", "mode": "grbl", "motion": "verified"},
timeout=5, sleep=sleep)
self.assertTrue(ok)
self.assertTrue(any("controller configured" in l for l in self.lines))
self.assertGreaterEqual(calls["n"], 4) # 3 polls + the settle
def test_wait_configured_times_out_and_says_so(self):
self._probe_state()
t = {"now": 0.0}
real_time = baseline.time.time
baseline.time.time = lambda: t["now"]
try:
def sleep(s):
t["now"] += s
ok = baseline.wait_controller_configured(
self.lines.append, {"controller": "running", "mode": "grbl"}, timeout=2, sleep=sleep)
finally:
baseline.time.time = real_time
self.assertFalse(ok)
self.assertTrue(any("did not apply its config" in l for l in self.lines))
def test_wait_configured_is_a_noop_outside_grbl_mode(self):
self._probe_state()
ok = baseline.wait_controller_configured(
self.lines.append, {"controller": "running", "mode": "cloud"}, timeout=1,
sleep=lambda s: self.fail("slept in cloud mode"))
self.assertTrue(ok)
ok = baseline.wait_controller_configured(
self.lines.append, {"controller": "stopped", "mode": "grbl"}, timeout=1,
sleep=lambda s: self.fail("slept with the controller stopped"))
self.assertTrue(ok)
def test_preconfig_reference_is_recognized(self):
self.assertTrue(baseline.reference_preconfig(
{"sysfs": {"cnc/motor_lock": "0", "cnc/step_freq": "10000", "cnc/y_mode": "1"}}))
self.assertFalse(baseline.reference_preconfig(
{"sysfs": {"cnc/motor_lock": "8", "cnc/step_freq": "28160", "cnc/y_mode": "8"}}))
# a genuinely different single constant is a machine fact, not pre-config
self.assertFalse(baseline.reference_preconfig(
{"sysfs": {"cnc/motor_lock": "8", "cnc/step_freq": "10000", "cnc/y_mode": "8"}}))
self.assertFalse(baseline.reference_preconfig({"sysfs": {}}))
# -- the XY microstep mode drives the fixed values ------------------------
def test_the_fixed_values_follow_the_microstep_mode(self):
x8 = dict(baseline.fixed_sysfs(8))
self.assertEqual(x8, dict(baseline.FIXED_SYSFS))
x16 = dict(baseline.fixed_sysfs(16))
self.assertEqual((x16["cnc/x_mode"], x16["cnc/y_mode"], x16["cnc/step_freq"], x16["cnc/ramp_rate"]),
("16", "16", "56320", "250000"))
x32 = dict(baseline.fixed_sysfs(32))
self.assertEqual((x32["cnc/x_mode"], x32["cnc/step_freq"], x32["cnc/ramp_rate"]),
("32", "112640", "500000"))
# everything else is the same list, in the same order
self.assertEqual([a for a, _ in baseline.fixed_sysfs(32)], [a for a, _ in baseline.FIXED_SYSFS])
self.assertEqual(x32["cnc/x_decay"], x8["cnc/x_decay"])
def test_the_mode_is_read_from_the_settings_with_a_default(self):
self.assertEqual(baseline.xy_mode_of({"xy_microsteps": "16"}), 16)
self.assertEqual(baseline.xy_mode_of({"xy_microsteps": "32"}), 32)
self.assertEqual(baseline.xy_mode_of({"xy_microsteps": ""}), 8)
self.assertEqual(baseline.xy_mode_of({}), 8)
self.assertEqual(baseline.xy_mode_of(None), 8)
self.assertEqual(baseline.xy_mode_of({"xy_microsteps": "24"}), 8)
self.assertEqual(baseline.xy_mode_of({"xy_microsteps": "abc"}), 8)
self.assertEqual(baseline.ref_xy_mode({"forgectrl": {"/settings": {"xy_microsteps": "16"}}}), 16)
self.assertEqual(baseline.ref_xy_mode({"forgectrl": {"/settings": None}}), 8)
self.assertEqual(baseline.ref_xy_mode({}), 8)
def test_fixed_constants_are_checked_at_the_reference_mode(self):
ref = {"sysfs": {"cnc/x_mode": "16", "cnc/step_freq": "56320", "cnc/ramp_rate": "250000"},
"forgectrl": {"/settings": {"xy_microsteps": "16"}}}
self.assertEqual(baseline.check_fixed_against(ref, self.lines.append), [])
ref["forgectrl"]["/settings"]["xy_microsteps"] = "8"
diffs = baseline.check_fixed_against(ref, self.lines.append)
self.assertEqual(diffs, ["cnc/x_mode: boot=16 constant=8",
"cnc/step_freq: boot=56320 constant=28160",
"cnc/ramp_rate: boot=250000 constant=125000"])
def test_wait_configured_watches_the_mode_in_force(self):
self._probe_state()
calls = {"n": 0}
def sleep(_s):
calls["n"] += 1
if calls["n"] == 2: # an x16 controller's init writes land
self._attr("cnc/step_freq", "56320")
self._attr("cnc/y_mode", "16")
ok = baseline.wait_controller_configured(
self.lines.append, {"controller": "running", "mode": "grbl", "motion": "verified"},
timeout=5, sleep=sleep, xy_mode=16)
self.assertTrue(ok)
self.assertTrue(any("controller configured" in l for l in self.lines))
# a reference taken under x16 is not pre-config
self.assertFalse(baseline.reference_preconfig(
{"sysfs": {"cnc/step_freq": "56320", "cnc/y_mode": "16"},
"forgectrl": {"/settings": {"xy_microsteps": "16"}}}))
self.assertTrue(baseline.reference_preconfig(
{"sysfs": {"cnc/step_freq": "10000", "cnc/y_mode": "1"},
"forgectrl": {"/settings": {"xy_microsteps": "16"}}}))
def test_stale_preconfig_reference_is_retaken_on_a_fresh_boot(self):
os.environ["FORGETEST_BOOT_ID"] = "test-boot-2"
try:
path = os.path.join(self.tmp, "boot-test-boot-2.json")
with open(path, "w") as f:
json.dump({"ts": "old", "sysfs": {"cnc/motor_lock": "0", "cnc/step_freq": "10000",
"cnc/y_mode": "1"}}, f)
ref = baseline.boot_reference(self.lines.append, self.tmp)
up = baseline.uptime_s()
if up is None or up > baseline.BOOT_MAX_AGE_S:
# too old to retake: the stale reference stands, marked
self.assertTrue(any("predates the controller's config" in l for l in self.lines))
self.assertEqual(ref["ts"], "old")
else:
self.assertTrue(any("retaking" in l for l in self.lines))
self.assertEqual(ref["sysfs"]["cnc/motor_lock"], "0")
finally:
os.environ.pop("FORGETEST_BOOT_ID", None)
if __name__ == "__main__":
unittest.main()
class BaselineModeTests(BaselineTests):
"""The baseline against a fake forgectrl: what the mode in force
owns. Reuses the fake sysfs tree of BaselineTests; only the new
tests run here (the inherited ones are skipped)."""
def setUp(self):
super().setUp()
import helpers
self.fc = helpers.FakeForgectrl().start()
baseline.Baseline._unreachable_until = 0.0
def tearDown(self):
self.fc.stop()
super().tearDown()
def run(self, result=None):
# only this class's own tests, not the base class's
if self._testMethodName not in BaselineModeTests.__dict__:
return
return super().run(result)
def cloud(self):
self.fc.state["mode"] = {"mode": "cloud", "controller": "running", "pid": 7, "motion": "verified"}
self.fc.state["settings"]["controller_mode"] = "cloud"
def nohunt_marker(self, refuse=False):
"""The no-hunt marker under the fake tree; what each POST found.
The fake client takes the marker down as gfcloud does, first thing
at its start; with refuse the POST is refused and no client starts."""
baseline.NOHUNT_MARKER = os.path.join(self.tmp, "nohunt-marker")
self.fc.state["settings"].setdefault("cloud_enabled", "1")
seen = []
def on_post(path, form):
seen.append((path, dict(form), os.path.exists(baseline.NOHUNT_MARKER)))
if refuse:
return 409, {"error": "busy"}
if os.path.exists(baseline.NOHUNT_MARKER):
os.remove(baseline.NOHUNT_MARKER)
if path == "/mode":
self.fc.state["mode"] = dict(self.fc.state["mode"], mode=form["controller"], controller="running")
elif path == "/controller/start":
self.fc.state["mode"] = dict(self.fc.state["mode"], controller="running")
return None
self.fc.on_post = on_post
return seen
def test_a_refused_switch_leaves_no_marker_for_the_next_start(self):
seen = self.nohunt_marker(refuse=True)
ok, detail = self.bl().switch_mode("cloud")
self.assertFalse(ok)
self.assertEqual(seen, [("/mode", {"controller": "cloud"}, True)])
self.assertFalse(os.path.exists(baseline.NOHUNT_MARKER))
def test_a_switch_to_cloud_starts_the_client_without_the_hunt(self):
seen = self.nohunt_marker()
ok, detail = self.bl().switch_mode("cloud")
self.assertTrue(ok, detail)
self.assertEqual(seen, [("/mode", {"controller": "cloud"}, True)])
self.assertFalse(os.path.exists(baseline.NOHUNT_MARKER)) # one start, never left behind
def test_a_switch_to_cloud_turns_cloud_mode_on_when_it_is_off(self):
# A test that declares cloud mode gets it: cloud_enabled goes to 1
# first, with the typed phrase the daemon asks for and a log line,
# and only then the mode switch.
lines = []
seen = self.nohunt_marker()
self.fc.state["settings"]["cloud_enabled"] = "0"
ok, detail = baseline.Baseline(lines.append).switch_mode("cloud")
self.assertTrue(ok, detail)
self.assertEqual(seen[0], ("/settings", {"cloud_enabled": "1", "phrase": "I UNDERSTAND"}, False))
self.assertEqual(seen[1], ("/mode", {"controller": "cloud"}, True))
self.assertTrue(any("cloud mode turned on for the test" in ln for ln in lines))
def test_a_switch_to_grbl_sets_no_marker(self):
seen = self.nohunt_marker()
self.cloud()
ok, detail = self.bl().switch_mode("grbl")
self.assertFalse(ok) # the fake has no Grbl port: the switch itself happened
self.assertEqual(seen, [("/mode", {"controller": "grbl"}, False)])
self.assertFalse(os.path.exists(baseline.NOHUNT_MARKER))
def test_the_mode_handed_back_is_cloud_without_the_hunt(self):
seen = self.nohunt_marker()
self.cloud()
b = self.bl()
cap = b.capture() # found in cloud
self.fc.state["mode"] = dict(self.fc.state["mode"], mode="grbl") # the run left it in grbl
b.enforce("post", captured=cap)
self.assertEqual(seen[0], ("/mode", {"controller": "cloud"}, True))
self.assertFalse(os.path.exists(baseline.NOHUNT_MARKER))
def test_a_standby_cloud_client_is_started_without_the_hunt(self):
seen = self.nohunt_marker()
self.cloud()
b = self.bl()
cap = b.capture()
self.fc.state["mode"] = dict(self.fc.state["mode"], controller="standby")
b.enforce("post", captured=cap)
self.assertEqual(seen[0], ("/controller/start", {}, True))
self.assertFalse(os.path.exists(baseline.NOHUNT_MARKER))
def test_grbl_mode_restores_the_controller_values_and_the_lamp(self):
self._attr("cnc/step_freq", "10000")
self._attr("pic/lid_led", "77")
left = self.bl().enforce("pre", captured=None)
self.assertEqual(sorted(x.item for x in left), ["cnc/step_freq", "pic/lid_led"])
self.assertEqual(self._read("cnc/step_freq"), "28160")
self.assertEqual(self._read("pic/lid_led"), "236")
def test_cloud_mode_leaves_the_clients_config_lamp_and_counters(self):
self.cloud()
self._attr("cnc/step_freq", "10000") # the cloud client's tick
self._attr("pic/x_step_current", "135")
self._attr("pic/lid_led", "77") # its lid-image level
b = self.bl()
cap = b.capture()
self.assertEqual(cap["mode"], "cloud")
self.assertNotIn("controller_mode", cap["settings"])
self._pos(-13096, -7400, 0) # the service re-zeroed and moved
self._attr("cnc/streaming", "1") # NOT the client's: still restored
left = b.enforce("post", captured=cap)
self.assertEqual([x.item for x in left], ["cnc/streaming"])
self.assertEqual(self._read("cnc/step_freq"), "10000")
self.assertEqual(self._read("pic/x_step_current"), "135")
self.assertEqual(self._read("pic/lid_led"), "77")
self.assertEqual(self._read("cnc/streaming"), "0")
self.assertEqual(self.fc.posts, []) # no mode switch, no settings write
def test_cloud_mode_still_relocks_the_latch(self):
self.cloud()
self._attr("cnc/interlock_circuit", "37") # bit 3 clear: unlocked
left = self.bl().enforce("post", captured=None)
self.assertEqual([x.item for x in left], ["laser_latch"])
self.assertEqual(self._read("cnc/laser_latch"), "1")
def test_undeclared_mode_change_is_handed_back_through_the_switch(self):
b = self.bl()
cap = b.capture() # found in grbl
self.assertEqual(cap["mode"], "grbl")
self.cloud() # the run left it in cloud, silently
left = b.enforce("post", captured=cap)
items = {x.item: x for x in left}
self.assertIn("mode", items)
self.assertEqual(items["mode"].action, "restored")
self.assertEqual(self.fc.posts, [("/mode", {"controller": "grbl"})])
self.assertEqual(self.fc.state["mode"]["mode"], "grbl")
def test_declared_mode_change_is_kept(self):
b = self.bl()
cap = b.capture()
self.cloud()
cap["mode"] = "cloud" # Context.mode_changed("cloud")
left = b.enforce("post", captured=cap)
self.assertNotIn("mode", [x.item for x in left])
self.assertEqual(self.fc.posts, [])
self.assertEqual(self.fc.state["mode"]["mode"], "cloud")
def test_controller_mode_setting_is_never_written_back_bare(self):
b = self.bl()
cap = b.capture()
self.assertNotIn("controller_mode", cap["settings"])
self.fc.state["settings"]["controller_mode"] = "cloud" # a switch persisted it
self.fc.state["mode"]["mode"] = "cloud"
cap["mode"] = "cloud"
b.enforce("post", captured=cap)
self.assertEqual([p for p, _ in self.fc.posts if p == "/settings"], [])