examples: zephyr: location: add pytest test for native_sim

Rely on playback data to result in accurate location data. Wait for first 5
locations and match logged data with expected position.

Signed-off-by: Marcin Niestroj <[email protected]>

examples/zephyr/location/wifi/pytest/conftest.py

@@ -0,0 +1,5 @@
+import pytest
+
+@pytest.fixture(scope='session')
+def anyio_backend():
+    return 'trio'

examples/zephyr/location/wifi/pytest/test_sample.py

@@ -0,0 +1,43 @@
+# Copyright (c) 2025 Golioth, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from collections import namedtuple
+import re
+
+from twister_harness.device.device_adapter import DeviceAdapter
+from twister_harness.helpers.shell import Shell
+
+import pytest
+
+
+pytestmark = pytest.mark.anyio
+
+
+async def test_location_wifi(shell: Shell, dut: DeviceAdapter, device):
+    # Set Golioth credential
+
+    golioth_cred = (await device.credentials.list())[0]
+    shell.exec_command(f"settings set golioth/psk-id {golioth_cred.identity}")
+    shell.exec_command(f"settings set golioth/psk {golioth_cred.key}")
+
+    # Wait for Golioth connection
+
+    dut.readlines_until(regex=".*Golioth CoAP client connected", timeout=90.0)
+
+    # Verify position
+
+    pattern = re.compile(r".* (?P<lon>\d+\.\d+) (?P<lat>\d+\.\d+) \((?P<acc>\d+)\)")
+    Position = namedtuple('Position', ('lon', 'lat', 'acc'))
+
+    positions = []
+    for _ in range(5):
+        lines = dut.readlines_until(regex=pattern, timeout=10.0)
+        m = pattern.search(lines[-1])
+        pos = Position(*[float(m[p]) for p in ['lon', 'lat', 'acc']])
+        positions.append(pos)
+
+    for pos in positions:
+        assert pos.lon == pytest.approx(50.663974800, 1e-3)
+        assert pos.lat == pytest.approx(17.942322850, 1e-3)
+        assert pos.acc < 1000

examples/zephyr/location/wifi/sample.yaml

@@ -2,15 +2,22 @@ sample:
   description: Location WiFi
   name: location wifi
 common:
-  build_only: true
   tags:
     - golioth
     - location
     - socket
 tests:
   sample.golioth.location_wifi:
+    build_only: true
     platform_allow:
       - esp32_devkitc_wrover/esp32/procpu
+      - nrf52840dk/nrf52840
+  sample.golioth.location_wifi.playback:
+    harness: pytest
+    extra_args: EXTRA_CONF_FILE="../../common/runtime_settings.conf"
+    extra_configs:
+      - CONFIG_GOLIOTH_SAMPLE_TWISTER_TEST=y
+      - arch:posix:CONFIG_NATIVE_UART_0_ON_STDINOUT=y
+    platform_allow:
       - native_sim
       - native_sim/native/64
-      - nrf52840dk/nrf52840