test/coredevice: add analyzer unittest

artiq/test/coredevice/analyzer.py

@@ -0,0 +1,30 @@
+from artiq.language import *
+from artiq.coredevice.analyzer import decode_dump, OutputMessage
+from artiq.test.hardware_testbench import ExperimentCase
+
+
+class CreateTTLPulse(EnvExperiment):
+    def build(self):
+        self.setattr_device("core")
+        self.setattr_device("ttl_out")
+
+    @kernel
+    def run(self):
+        self.ttl_out.pulse_mu(1000)
+
+
+class AnalyzerTest(ExperimentCase):
+    def test_ttl_pulse(self):
+        comm = self.device_mgr.get("comm")
+
+        # clear analyzer buffer
+        comm.get_analyzer_dump()
+
+        exp = self.create(CreateTTLPulse)
+        exp.run()
+
+        dump = decode_dump(comm.get_analyzer_dump())
+        ttl_messages = [msg for msg in dump.messages if isinstance(msg, OutputMessage)]
+        self.assertEqual(len(ttl_messages), 2)
+        self.assertEqual(abs(ttl_messages[0].timestamp - ttl_messages[1].timestamp), 1000)
+