CI Ping/Iperf: add tests, print without lock, reduce code lines

Add some basic unit tests to verify that Iperf/Ping work. Harmonize the
logging by only print in the "main" iperf/ping function, to avoid that
if we test with multiple UEs, the output intermixes. Also, do one common
mkdir before starting multiple pings/iperfs. Finally, harmonize the
paths so that Iperf and Ping log their files in the same place.

ci-scripts/ci_infra.yaml

@@ -405,3 +405,7 @@ l2sim4g_ext_dn:
   Host: "%%current_host%%"
   NetworkScript: docker exec l2sim4g-trf-gen ip a show dev eth0
   CmdPrefix: docker exec l2sim4g-trf-gen
+
+test:
+  Host: localhost
+  NetworkScript: echo "inet 127.0.0.1 mtu 1500"

ci-scripts/cls_cmd.py

@@ -128,7 +128,7 @@ class LocalCmd(Cmd):
 
 	def copyin(self, src, tgt, recursive=False):
 		if src[0] != '/' or tgt[0] != '/':
-			raise Exception('support only absolute file paths!')
+			raise Exception(f'support only absolute file paths (src {src} tgt {tgt})!')
 		opt = '-r' if recursive else ''
 		return self.run(f'cp {opt} {src} {tgt}').returncode == 0
 

ci-scripts/tests/README.md

@@ -7,5 +7,6 @@ There are some unit tests. From the parent directory, i.e., `ci-scripts/`,
 start with
 
     python tests/deployment.py -v
+    python tests/ping-iperf.py -v
 
 It will indicate if all tests passed.

ci-scripts/tests/ping-iperf.py

+import sys
+import logging
+logging.basicConfig(
+	level=logging.DEBUG,
+	stream=sys.stdout,
+	format="[%(asctime)s] %(levelname)8s: %(message)s"
+)
+import os
+os.system(f'rm -rf cmake_targets')
+os.system(f'mkdir -p cmake_targets/log')
+import unittest
+
+sys.path.append('./') # to find OAI imports below
+import cls_oai_html
+import cls_oaicitest
+import cls_containerize
+import ran
+import epc
+
+class TestPingIperf(unittest.TestCase):
+	def setUp(self):
+		self.html = cls_oai_html.HTMLManagement()
+		self.html.testCaseId = "000000"
+		self.ci = cls_oaicitest.OaiCiTest()
+		self.ci.ue_ids = ["test"]
+		self.ci.nodes = ["localhost"]
+		self.cont = cls_containerize.Containerize()
+		self.epc = epc.EPCManagement()
+		self.epc.IPAddress = "localhost"
+		self.epc.UserName = None
+		self.epc.Password = None
+		self.epc.SourceCodePath = os.getcwd()
+		self.ran = ran.RANManagement()
+
+	def test_ping(self):
+		self.ci.ping_args = "-c3 127.0.0.1"
+		self.ci.ping_packetloss_threshold = "0"
+		# TODO Should need nothing but options and UE(s) to use
+		self.ci.Ping(self.html, self.ran, self.epc, self.cont)
+
+	def test_iperf(self):
+		# note: needs to be five seconds because Iperf() adds -O 3, so if it is
+		# too short, the server is terminated before the client loaded
+		# everything
+		self.ci.iperf_args = "-u -t 5 -b 1M -R"
+		self.ci.svr_id = "test"
+		self.ci.svr_node = "localhost"
+		self.ci.iperf_packetloss_threshold = "0"
+		self.ci.iperf_bitrate_threshold = "0"
+		self.ci.iperf_profile = "balanced"
+		# TODO Should need nothing but options and UE(s) to use
+		self.ci.Iperf(self.html, self.ran, self.epc, self.cont)
+
+if __name__ == '__main__':
+	unittest.main()