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feature: reaction on some EVSEStatusCodes. Feature: testsuite and fault injection
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3 changed files with 68 additions and 0 deletions
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@ -7,6 +7,7 @@
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import pyPlcTcpSocket
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import time # for time.sleep()
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from helpers import prettyHexMessage, combineValueAndMultiplier
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from mytestsuite import *
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from random import random
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from exiConnector import * # for EXI data handling/converting
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@ -158,6 +159,9 @@ class fsmEvse():
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strPresentVoltage = str(self.simulatedPresentVoltage) # "345"
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self.callbackShowStatus(strPresentVoltage, "EVSEPresentVoltage")
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msg = addV2GTPHeader(exiEncode("EDg_"+strPresentVoltage)) # EDg for Encode, Din, PreChargeResponse
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if (testsuite_faultinjection_is_triggered(TC_EVSE_Shutdown_during_PreCharge)):
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# send a PreChargeResponse with StatusCode EVSE_Shutdown, to simulate a user-triggered session stop
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msg = addV2GTPHeader("809a02180189551e24fc9e9160004100008182800000")
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self.addToTrace("responding " + prettyHexMessage(msg))
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self.publishStatus("PreCharging " + strPresentVoltage)
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self.Tcp.transmit(msg)
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@ -187,6 +191,9 @@ class fsmEvse():
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self.callbackShowStatus(strPresentVoltage, "EVSEPresentVoltage")
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strEVSEPresentCurrent = "1" # Just as a dummy current
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msg = addV2GTPHeader(exiEncode("EDi_"+strPresentVoltage + "_" + strEVSEPresentCurrent)) # EDi for Encode, Din, CurrentDemandRes
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if (testsuite_faultinjection_is_triggered(TC_EVSE_Malfunction_during_CurrentDemand)):
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# send a CurrentDemandResponse with StatusCode EVSE_Malfunction, to simulate e.g. a voltage overshoot
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msg = addV2GTPHeader("809a02203fa9e71c31bc920100821b430b933b4b7339032b93937b908e08043000081828440201818000040060a11c06030306402038441380")
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self.addToTrace("responding " + prettyHexMessage(msg))
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self.publishStatus("CurrentDemand")
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self.Tcp.transmit(msg)
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21
fsmPev.py
21
fsmPev.py
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@ -95,6 +95,8 @@ class fsmPev():
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s = "WaitForSessionStopResponse"
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if (statenumber == stateChargingFinished):
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s = "ChargingFinished"
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if (statenumber == stateUnrecoverableError):
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s = "UnrecoverableError"
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if (statenumber == stateSequenceTimeout):
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s = "SequenceTimeout"
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return s
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@ -393,15 +395,22 @@ class fsmPev():
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self.addToTrace(strConverterResult)
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if (strConverterResult.find("PreChargeRes")>0):
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u = 0 # a default voltage of 0V in case we cannot convert the actual value
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strEVSEStatusCode = "0" # default in case the decoding does not work
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try:
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y = json.loads(strConverterResult)
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strEVSEPresentVoltageValue = y["EVSEPresentVoltage.Value"]
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strEVSEPresentVoltageMultiplier = y["EVSEPresentVoltage.Multiplier"]
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u = combineValueAndMultiplier(strEVSEPresentVoltageValue, strEVSEPresentVoltageMultiplier)
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self.callbackShowStatus(format(u,".1f"), "EVSEPresentVoltage")
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strEVSEStatusCode = y["DC_EVSEStatus.EVSEStatusCode"]
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except:
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self.addToTrace("ERROR: Could not decode the PreChargeResponse")
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self.addToTrace("PreChargeResponse received.")
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if (strEVSEStatusCode=="2"):
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self.addToTrace("EVSE_Shutdown. Seems the user canceled the charging on the charger.")
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self.publishStatus("EVSE_Shutdown")
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self.enterState(stateUnrecoverableError)
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return
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if (getConfigValueBool("use_evsepresentvoltage_for_precharge_end")):
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# We want to use the EVSEPresentVoltage, which was reported by the charger, as end-criteria for the precharging.
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s = "EVSEPresentVoltage " + str(u) + "V, "
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@ -491,14 +500,26 @@ class fsmPev():
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self.addToTrace(strConverterResult)
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if (strConverterResult.find("CurrentDemandRes")>0):
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u = 0 # a default voltage of 0V in case we cannot convert the actual value
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strEVSEStatusCode = "0" # default in case the decoding does not work
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try:
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y = json.loads(strConverterResult)
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strEVSEPresentVoltageValue = y["EVSEPresentVoltage.Value"]
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strEVSEPresentVoltageMultiplier = y["EVSEPresentVoltage.Multiplier"]
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u = combineValueAndMultiplier(strEVSEPresentVoltageValue, strEVSEPresentVoltageMultiplier)
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self.callbackShowStatus(format(u,".1f"), "EVSEPresentVoltage")
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strEVSEStatusCode = y["DC_EVSEStatus.EVSEStatusCode"]
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except:
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self.addToTrace("ERROR: Could not decode the PreChargeResponse")
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if (strEVSEStatusCode=="2"):
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self.addToTrace("EVSE_Shutdown. Seems the user canceled the charging on the charger.")
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self.publishStatus("EVSE_Shutdown")
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self.enterState(stateUnrecoverableError)
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return
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if (strEVSEStatusCode=="6"):
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self.addToTrace("EVSE_Malfunction. Seems the charger detected a problem.")
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self.publishStatus("EVSE_Malfunction")
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self.enterState(stateUnrecoverableError)
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return
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if (getConfigValueBool("use_physical_inlet_voltage_during_chargeloop")):
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# Instead of using the voltage which is reported by the charger, use the physically measured.
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u = self.hardwareInterface.getInletVoltage()
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40
mytestsuite.py
Normal file
40
mytestsuite.py
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@ -0,0 +1,40 @@
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# For testing.
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#
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# Concept: This module allows to trigger abnormal situations, to test the reaction of the software ("fault insertion testing").
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# In the place in the software, where the fault shall be injected, add a condition like
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# if (testsuite_faultinjection_is_triggered(TC_MY_TESTCASE_FOR_SOMETHING)):
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# DoSomethingStrange()
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# In normal software run, this condition is never fulfilled and does not disturb. If the related test case is activated,
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# by setting testsuite_testcase_number = TC_MY_TESTCASE_FOR_SOMETHING below, the condition will fire and the fault is injected.
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# A number of delay cycles can be configured with testsuite_delayCycles below.
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# The list of test cases. Each must have a unique test case ID.
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TC_NOTHING_TO_TEST = 0
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TC_EVSE_Shutdown_during_PreCharge = 1000
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TC_EVSE_Shutdown_during_CurrentDemand = 2000
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TC_EVSE_Malfunction_during_CurrentDemand = 2001
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# Here we configure, which test case should fire, and after which number of calls:
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testsuite_testcase_number = TC_EVSE_Malfunction_during_CurrentDemand
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testsuite_delayCycles = 5
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# Counter variable for delaying the trigger
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testsuite_counter = 0
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def testsuite_faultinjection_is_triggered(context):
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global testsuite_counter, testsuite_testcase_number, testsuite_delayCycles
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isTestcaseFired = False
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if (context==testsuite_testcase_number): # if the call context is matching the intended test case
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testsuite_counter += 1 # count the number of matching calls
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isTestcaseFired = testsuite_counter>=testsuite_delayCycles # and fire the test case if the intended number is reached
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if (isTestcaseFired):
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print("[TESTSUITE] Fired test case " + str(context) + " TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT")
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return isTestcaseFired
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if __name__ == "__main__":
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print("Testing the mytestsuite")
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print("nothing to do")
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