support/testing: add gpsd runtime testing

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 9c8f6dc5e4d7244b493e290c055202cadc9a12cb)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -1798,6 +1798,8 @@ F:	support/testing/tests/package/test_gnuplot.py
 F:	support/testing/tests/package/test_gnuplot/
 F:	support/testing/tests/package/test_gnuradio.py
 F:	support/testing/tests/package/test_gnuradio/
+F:	support/testing/tests/package/test_gpsd.py
+F:	support/testing/tests/package/test_gpsd/
 F:	support/testing/tests/package/test_gzip.py
 F:	support/testing/tests/package/test_highway.py
 F:	support/testing/tests/package/test_hwloc.py

support/testing/tests/package/test_gpsd.py

@@ -0,0 +1,56 @@
+import os
+import time
+
+import infra.basetest
+
+
+class TestGpsd(infra.basetest.BRTest):
+    rootfs_overlay = \
+        infra.filepath("tests/package/test_gpsd/rootfs-overlay")
+    # This test is using the gpsfake Python script.
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        f"""
+        BR2_PACKAGE_GPSD=y
+        BR2_PACKAGE_PYTHON3=y
+        BR2_ROOTFS_OVERLAY="{rootfs_overlay}"
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        # We check the program can execute.
+        self.assertRunOk("gpsd --version")
+
+        # Since gpsd needs a real GPS device, we stop the service.
+        self.assertRunOk("/etc/init.d/S50gpsd stop")
+
+        # We start the "gpsfake" GPS emulator instead.
+        cmd = "gpsfake"
+        cmd += " --slow --cycle 0.1 --quiet"
+        cmd += "/root/udp-nmea.log &> /dev/null &"
+        self.assertRunOk(cmd)
+
+        # Wait a bit, to let the gpsfake and gpsd to settle...
+        time.sleep(3 * self.timeout_multiplier)
+
+        # List the GPS devices. We should see our local UDP test GPS.
+        out, ret = self.emulator.run("gpsctl")
+        self.assertEqual(ret, 0)
+        self.assertTrue(out[0].startswith("udp://127.0.0.1"))
+        self.assertIn("NMEA0183", out[0])
+
+        # Collect some of our fake GPS data, and check we got the
+        # coordinates from our test data file.
+        # Our expected coordinates are:
+        # https://www.openstreetmap.org/#map=19/43.60439/1.44336
+        out, ret = self.emulator.run("gpscsv --header 0 --count 3")
+        self.assertEqual(ret, 0)
+        _, gps_lat, gps_long, _ = out[0].split(",")
+        self.assertAlmostEqual(float(gps_lat), 43.60439)
+        self.assertAlmostEqual(float(gps_long), 1.44336)

support/testing/tests/package/test_gpsd/rootfs-overlay/root/udp-nmea.log

@@ -0,0 +1,6 @@
+# Name: NMEA 0183 messages for gpsd Buildroot test
+# Transport: UDP
+# For packet format, see:
+# https://gpsd.gitlab.io/gpsd/NMEA.html
+$GPGGA,123456.789,4336.2634,N,0126.6016,E,1,04,1.7,143.5,M,,,,*3A
+$GPZDA,123456.789,20,07,2024,2,00*64