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authorzhanghaoyu7 <zhanghaoyu7@huawei.com>2015-11-05 15:35:17 +0800
committerzhanghaoyu7 <zhanghaoyu7@huawei.com>2015-11-05 15:35:17 +0800
commitf7c4c771388c7ee9c6c18fd2796e00a1283de038 (patch)
tree681fda0389cc56d752b9dea59774c751f9d01a24
parentc7cbe191f120a34595218621306c3db11c4f4721 (diff)
write ovsdb connection related scripts
JIRA:ONOSFW-64 1.ovsdb connection scripts Change-Id: Id51cf1eb3e7545c35ef64156b7dc7618cc69073f
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.params48
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.py240
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.topo60
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/__init__.py0
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/Nbdata.py212
-rw-r--r--framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/__init__.py0
6 files changed, 560 insertions, 0 deletions
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.params b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.params
new file mode 100644
index 00000000..e1128284
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.params
@@ -0,0 +1,48 @@
+<PARAMS>
+ # CASE - Description
+ # 1 - Compile ONOS and push it to the test machines
+ # 2 - Test ovsdb connection and tearDown
+ # 3 - Test default br-int configuration and vxlan port
+ # 4 - Test default openflow configuration
+ # 5 - Test default flows
+ # 6 - Configure Network Subnet Port
+ # 7 - Test host go online and ping each other
+ # 8 - Clear ovs configuration and host configuration
+
+ <testcases>1,3,4,2,5,6,7,8</testcases>
+
+ <DEPENDENCY>
+ <path>/tests/FUNCovsdbtest/Dependency/</path>
+ </DEPENDENCY>
+
+ <ENV>
+ <cellName>singlenode</cellName>
+ <cellApps>drivers,openflow,proxyarp,mobility</cellApps>
+ </ENV>
+
+ <CTRL>
+ <ip1>OC1</ip1>
+ <port1>6653</port1>
+ <ovsdbport>6640</ovsdbport>
+ </CTRL>
+
+ <TIMER>
+ <delaytime>5</delaytime> #delaytime for ovsdb connection create and delete
+ </TIMER>
+
+ <HTTP>
+ <port>8181</port>
+ <path>/onos/vtn/</path>
+ </HTTP>
+
+ <GIT>
+ <pull>False</pull>
+ <branch>master</branch>
+ </GIT>
+
+ <OVSDB>
+ <ip1>OCN</ip1>
+ <ip2>OC1</ip2>
+ </OVSDB>
+
+</PARAMS>
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.py b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.py
new file mode 100644
index 00000000..1cb0ab20
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.py
@@ -0,0 +1,240 @@
+"""
+Description: This test is to check onos set configuration and flows with ovsdb connection.
+
+List of test cases:
+CASE1: Compile ONOS and push it to the test machines
+CASE2: Test ovsdb connection and tearDown
+CASE3: Test default br-int configuration and vxlan port
+CASE4: Test default openflow configuration
+CASE5: Test default flows
+CASE6: Configure Network Subnet Port
+CASE7: Test host go online and ping each other
+CASE8: Clear ovs configuration and host configuration
+zhanghaoyu7@huawei.com
+"""
+import os
+
+class FUNCovsdbtest:
+
+ def __init__( self ):
+ self.default = ''
+
+ def CASE1( self, main ):
+ """
+ CASE1 is to compile ONOS and push it to the test machines
+
+ Startup sequence:
+ cell <name>
+ onos-verify-cell
+ NOTE: temporary - onos-remove-raft-logs
+ onos-uninstall
+ start mininet
+ git pull
+ mvn clean install
+ onos-package
+ onos-install -f
+ onos-wait-for-start
+ start cli sessions
+ start ovsdb
+ start vtn apps
+ """
+ import os
+ main.log.info( "ONOS Single node start " +
+ "ovsdb test - initialization" )
+ main.case( "Setting up test environment" )
+ main.caseExplanation = "Setup the test environment including " +\
+ "installing ONOS, start ONOS."
+
+ # load some variables from the params file
+ PULLCODE = False
+ if main.params[ 'GIT' ][ 'pull' ] == 'True':
+ PULLCODE = True
+ gitBranch = main.params[ 'GIT' ][ 'branch' ]
+ cellName = main.params[ 'ENV' ][ 'cellName' ]
+ ipList = os.getenv( main.params[ 'CTRL' ][ 'ip1' ] )
+ OVSDB1Ip = os.getenv( main.params[ 'OVSDB' ][ 'ip1' ] )
+ OVSDB2Ip = os.getenv( main.params[ 'OVSDB' ][ 'ip2' ] )
+
+ main.step( "Create cell file" )
+ cellAppString = main.params[ 'ENV' ][ 'cellApps' ]
+ main.ONOSbench.createCellFile( main.ONOSbench.ip_address, cellName,
+ main.OVSDB1.ip_address,
+ cellAppString, ipList )
+
+ main.step( "Applying cell variable to environment" )
+ cellResult = main.ONOSbench.setCell( cellName )
+ verifyResult = main.ONOSbench.verifyCell()
+
+ main.log.info( "Removing raft logs" )
+ main.ONOSbench.onosRemoveRaftLogs()
+
+ main.CLIs = []
+ main.nodes = []
+ main.numCtrls= 1
+
+ for i in range( 1, main.numCtrls + 1 ):
+ try:
+ main.CLIs.append( getattr( main, 'ONOScli' + str( i ) ) )
+ main.nodes.append( getattr( main, 'ONOS' + str( i ) ) )
+ ipList.append( main.nodes[ -1 ].ip_address )
+ except AttributeError:
+ break
+
+ main.log.info( "Uninstalling ONOS" )
+ for node in main.nodes:
+ main.ONOSbench.onosUninstall( node.ip_address )
+
+ # Make sure ONOS process is not running
+ main.log.info( "Killing any ONOS processes" )
+ killResults = main.TRUE
+ for node in main.nodes:
+ killed = main.ONOSbench.onosKill( node.ip_address )
+ killResults = killResults and killed
+
+ cleanInstallResult = main.TRUE
+ gitPullResult = main.TRUE
+ main.step( "Git checkout and pull" + gitBranch )
+ if PULLCODE:
+ main.ONOSbench.gitCheckout( gitBranch )
+ gitPullResult = main.ONOSbench.gitPull()
+ # values of 1 or 3 are good
+ utilities.assert_lesser( expect=0, actual=gitPullResult,
+ onpass="Git pull successful",
+ onfail="Git pull failed" )
+
+ main.ONOSbench.getVersion( report=True )
+
+ main.step( "Using mvn clean install" )
+ cleanInstallResult = main.TRUE
+ if PULLCODE and gitPullResult == main.TRUE:
+ cleanInstallResult = main.ONOSbench.cleanInstall()
+ else:
+ main.log.warn( "Did not pull new code so skipping mvn" +
+ "clean install" )
+ utilities.assert_equals( expect=main.TRUE,
+ actual=cleanInstallResult,
+ onpass="MCI successful",
+ onfail="MCI failed" )
+
+ main.step( "Creating ONOS package" )
+ packageResult = main.ONOSbench.onosPackage()
+ utilities.assert_equals( expect=main.TRUE,
+ actual=packageResult,
+ onpass="Successfully created ONOS package",
+ onfail="Failed to create ONOS package" )
+
+ main.step( "Installing ONOS package" )
+ onosInstallResult = main.ONOSbench.onosInstall(
+ options="-f", node=main.nodes[0].ip_address )
+ utilities.assert_equals( expect=main.TRUE, actual=onosInstallResult,
+ onpass="ONOS install successful",
+ onfail="ONOS install failed" )
+
+ main.step( "Checking if ONOS is up yet" )
+ print main.nodes[0].ip_address
+ for i in range( 2 ):
+ onos1Isup = main.ONOSbench.isup( main.nodes[0].ip_address )
+ if onos1Isup:
+ break
+ utilities.assert_equals( expect=main.TRUE, actual=onos1Isup,
+ onpass="ONOS startup successful",
+ onfail="ONOS startup failed" )
+ main.log.step( "Starting ONOS CLI sessions" )
+ print main.nodes[0].ip_address
+ cliResults = main.ONOScli1.startOnosCli( main.nodes[0].ip_address )
+ utilities.assert_equals( expect=main.TRUE, actual=cliResults,
+ onpass="ONOS cli startup successful",
+ onfail="ONOS cli startup failed" )
+
+ main.step( "App Ids check" )
+ appCheck = main.ONOScli1.appToIDCheck()
+
+ if appCheck !=main.TRUE:
+ main.log.warn( main.CLIs[0].apps() )
+ main.log.warn( main.CLIs[0].appIDs() )
+ utilities.assert_equals( expect=main.TRUE, actual=appCheck,
+ onpass="App Ids seem to be correct",
+ onfail="Something is wrong with app Ids" )
+ if cliResults == main.FALSE:
+ main.log.error( "Failed to start ONOS,stopping test" )
+ main.cleanup()
+ main.exit()
+
+ main.step( "Install onos-ovsdatabase" )
+ installResults = main.ONOScli1.activateApp( "org.onosproject.ovsdb" )
+ utilities.assert_equals( expect=main.TRUE, actual=installResults,
+ onpass="Install onos-ovsdatabase successful",
+ onfail="Install onos-ovsdatabase failed" )
+
+ main.step( "Install onos-app-vtnrsc" )
+ installResults = main.ONOScli1.activateApp( "org.onosproject.vtnrsc" )
+ utilities.assert_equals( expect=main.TRUE, actual=installResults,
+ onpass="Install onos-app-vtnrsc successful",
+ onfail="Install onos-app-vtnrsc failed" )
+
+ main.step( "Install onos-app-vtn" )
+ installResults = main.ONOScli1.activateApp( "org.onosproject.vtn" )
+ utilities.assert_equals( expect=main.TRUE, actual=installResults,
+ onpass="Install onos-app-vtn successful",
+ onfail="Install onos-app-vtn failed" )
+
+ main.step( "Install onos-app-vtnweb" )
+ installResults = main.ONOScli1.activateApp( "org.onosproject.vtnweb" )
+ utilities.assert_equals( expect=main.TRUE, actual=installResults,
+ onpass="Install onos-app-vtnweb successful",
+ onfail="Install onos-app-vtnweb failed" )
+
+ def CASE2( self, main ):
+
+ """
+ Test ovsdb connection and teardown
+ """
+ import os,sys
+ import re
+ import time
+
+ main.case( "Test ovsdb connection and teardown" )
+ main.caseExplanation = "Test ovsdb connection create and delete" +\
+ " over ovsdb node and onos node "
+
+ ctrlip = os.getenv( main.params[ 'CTRL' ][ 'ip1' ] )
+ ovsdbport = main.params[ 'CTRL' ][ 'ovsdbport' ]
+ delaytime = main.params[ 'TIMER' ][ 'delaytime' ]
+
+ main.step( "Set ovsdb node manager" )
+ assignResult = main.OVSDB1.setManager( ip=ctrlip, port=ovsdbport, delaytime=delaytime )
+ stepResult = assignResult
+ utilities.assert_equals( expect=main.TRUE,
+ actual=stepResult,
+ onpass="Set ovsdb node manager sucess",
+ onfail="Set ovsdb node manager failed" )
+
+ main.step( "Check ovsdb node manager is " + str( ctrlip ) )
+ response = main.OVSDB1.getManager()
+ if re.search( ctrlip, response ):
+ stepResult = main.TRUE
+ else:
+ stepResult = main.FALSE
+ utilities.assert_equals( expect=main.TRUE,
+ actual=stepResult,
+ onpass="Check ovsdb node manager is " + str( response ) ,
+ onfail="Check ovsdb node manager failed" )
+
+ main.step( "Delete ovsdb node manager" )
+ deleteResult = main.OVSDB1.delManager( delaytime=delaytime )
+ stepResult = deleteResult
+ utilities.assert_equals( expect=main.TRUE,
+ actual=stepResult,
+ onpass="ovsdb node delete manager sucess",
+ onfail="ovsdb node delete manager failed" )
+
+ main.step( "Check ovsdb node delete manager " + str( ctrlip ) )
+ response = main.OVSDB1.getManager()
+ if not re.search( ctrlip, response ):
+ stepResult = main.TRUE
+ else:
+ stepResult = main.FALSE
+ utilities.assert_equals( expect=main.TRUE,
+ actual=stepResult,
+ onpass="Check ovsdb node delete manager sucess",
+ onfail="Check ovsdb node delete manager failed" )
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.topo b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.topo
new file mode 100644
index 00000000..ae748d2e
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/FUNCovsdbtest.topo
@@ -0,0 +1,60 @@
+<TOPOLOGY>
+ <COMPONENT>
+
+ <ONOSbench>
+ <host>OCN</host>
+ <user>admin</user>
+ <password></password>
+ <type>OnosDriver</type>
+ <connect_order>1</connect_order>
+ <COMPONENTS>
+ </COMPONENTS>
+ </ONOSbench>
+
+ <ONOScli1>
+ <host>OCN</host>
+ <user>admin</user>
+ <password></password>
+ <type>OnosCliDriver</type>
+ <connect_order>2</connect_order>
+ <COMPONENTS> </COMPONENTS>
+ </ONOScli1>
+
+ <ONOS1>
+ <host>OC1</host>
+ <user>sdn</user>
+ <password></password>
+ <type>OnosDriver</type>
+ <connect_order>3</connect_order>
+ <COMPONENTS> </COMPONENTS>
+ </ONOS1>
+
+ <ONOSrest>
+ <host>OC1</host>
+ <user>sdn</user>
+ <password></password>
+ <type>OnosRestDriver</type>
+ <connect_order>4</connect_order>
+ <COMPONENTS> </COMPONENTS>
+ </ONOSrest>
+
+ <OVSDB1>
+ <host>OCN</host>
+ <user>admin</user>
+ <password></password>
+ <type>OvsdbDriver</type>
+ <connect_order>5</connect_order>
+ <COMPONENTS> </COMPONENTS>
+ </OVSDB1>
+
+ <OVSDB2>
+ <host>OC1</host>
+ <user>sdn</user>
+ <password></password>
+ <type>OvsdbDriver</type>
+ <connect_order>6</connect_order>
+ <COMPONENTS> </COMPONENTS>
+ </OVSDB2>
+
+ </COMPONENT>
+</TOPOLOGY>
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/__init__.py b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/__init__.py
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/Nbdata.py b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/Nbdata.py
new file mode 100644
index 00000000..3fde20db
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/Nbdata.py
@@ -0,0 +1,212 @@
+"""
+This file provide the data
+lanqinglong@huawei.com
+"""
+import json
+
+class NetworkData:
+
+ def __init__(self):
+ self.id = ''
+ self.state = 'ACTIVE'
+ self.name = 'onosfw-1'
+ self.physicalNetwork = 'none'
+ self.admin_state_up = True
+ self.tenant_id = ''
+ self.routerExternal = False
+ self.type ='LOCAL'
+ self.segmentationID = '6'
+ self.shared = False
+
+ def DictoJson(self):
+
+ if self.id =='' or self.tenant_id == '':
+ print 'Id and tenant id is necessary!'
+
+ Dicdata = {}
+ if self.id !='':
+ Dicdata['id'] = self.id
+ if self.state != '':
+ Dicdata['status'] = self.state
+ if self.name !='':
+ Dicdata['name'] = self.name
+ if self.physicalNetwork !='':
+ Dicdata['provider:physical_network'] = self.physicalNetwork
+ if self.admin_state_up !='':
+ Dicdata['admin_state_up'] = self.admin_state_up
+ if self.tenant_id !='':
+ Dicdata['tenant_id'] = self.tenant_id
+ if self.routerExternal !='':
+ Dicdata['router:external'] = self.routerExternal
+ if self.type !='':
+ Dicdata['provider:network_type'] = self.type
+ if self.segmentationID !='':
+ Dicdata['provider:segmentation_id'] = self.segmentationID
+ if self.shared !='':
+ Dicdata['shared'] = self.shared
+
+ Dicdata = {'network': Dicdata}
+
+ return json.dumps(Dicdata,indent=4)
+
+ def Ordered(self,obj):
+
+ if isinstance(obj, dict):
+ return sorted((k,self.Ordered(v)) for k, v in obj.items())
+ if isinstance(obj, list):
+ return sorted(self.Ordered(x) for x in obj )
+ else:
+ return obj
+
+ def JsonCompare(self,SourceData,DestiData,FirstPara,SecondPara):
+
+ try:
+ SourceCompareDataDic = json.loads(SourceData)
+ DestiCompareDataDic = json.loads(DestiData)
+ except ValueError:
+ print "SourceData or DestData is not JSON Type!"
+ return False
+
+ try:
+ Socom = SourceCompareDataDic[FirstPara][SecondPara]
+ Decom = DestiCompareDataDic[FirstPara][SecondPara]
+ except KeyError,error:
+ print "Key error ,This key is not found:%s"%error
+ return False
+
+ if str(Socom).lower()== str(Decom).lower():
+ return True
+ else:
+ print "Source Compare data:"+FirstPara+"."+SecondPara+"="+str(Socom)
+ print "Dest Compare data: "+FirstPara+"."+SecondPara+"="+str(Decom)
+ return False
+
+class SubnetData(NetworkData):
+
+ def __init__(self):
+ self.id = ''
+ self.tenant_id = ''
+ self.network_id = ''
+ self.nexthop = '192.168.1.1'
+ self.destination = '192.168.1.1/24'
+ self.start = '192.168.2.2'
+ self.end = '192.168.2.254'
+ self.ipv6_address_mode = 'DHCPV6_STATELESS'
+ self.ipv6_ra_mode = 'DHCPV6_STATELESS'
+ self.cidr = '192.168.1.1/24'
+ self.enable_dhcp = True
+ self.dns_nameservers = 'aaa'
+ self.gateway_ip = '192.168.2.1'
+ self.ip_version = '4'
+ self.shared = False
+ self.name = 'demo-subnet'
+
+ def DictoJson(self):
+ if self.id =='' or self.tenant_id == '':
+ print 'Id and tenant id is necessary!'
+
+ Dicdata = {}
+ host_routesdata = []
+ host_routesdata.append({'nexthop': self.nexthop,'destination': self.destination})
+ allocation_pools = []
+ allocation_pools.append({'start': self.start,'end':self.end})
+
+ if self.id != '':
+ Dicdata['id'] = self.id
+ if self.network_id != '':
+ Dicdata['network_id'] = self.network_id
+ if self.name != '':
+ Dicdata['name'] = self.name
+ if self.nexthop != '':
+ Dicdata['host_routes'] = host_routesdata
+ if self.tenant_id != '':
+ Dicdata['tenant_id'] = self.tenant_id
+ if self.start != '':
+ Dicdata['allocation_pools'] = allocation_pools
+ if self.shared != '':
+ Dicdata['shared'] = self.shared
+ if self.ipv6_address_mode != '':
+ Dicdata['ipv6_address_mode'] = self.ipv6_address_mode
+ if self.ipv6_ra_mode != '':
+ Dicdata['ipv6_ra_mode'] = self.ipv6_ra_mode
+ if self.cidr != '':
+ Dicdata['cidr'] = self.cidr
+ if self.enable_dhcp != '':
+ Dicdata['enable_dhcp'] = self.enable_dhcp
+ if self.dns_nameservers != '':
+ Dicdata['dns_nameservers'] = self.dns_nameservers
+ if self.gateway_ip != '':
+ Dicdata['gateway_ip'] = self.gateway_ip
+ if self.ip_version != '':
+ Dicdata['ip_version'] = self.ip_version
+
+ Dicdata = {'subnet': Dicdata}
+
+ return json.dumps(Dicdata,indent=4)
+
+class VirtualPortData(NetworkData):
+
+ def __init__(self):
+ self.id = ''
+ self.state = 'ACTIVE'
+ self.bindingHostId = 'fa:16:3e:76:8e:88'
+ self.allowedAddressPairs = [{'mac_address':'fa:16:3e:76:8e:88','ip_address':'192.168.1.1'}]
+ self.deviceOwner = 'none'
+ self.fixedIp = []
+ self.securityGroups = [{'securityGroup':'asd'}]
+ self.adminStateUp = True
+ self.network_id = ''
+ self.tenant_id = ''
+ self.subnet_id = ''
+ self.bindingvifDetails = 'port_filter'
+ self.bindingvnicType = 'normal'
+ self.bindingvifType = 'ovs'
+ self.macAddress = 'fa:16:3e:76:8e:88'
+ self.deviceId = 'a08aa'
+ self.name = 'u'
+
+ def DictoJson(self):
+ if self.id == '' or self.tenant_id == ' ' or \
+ self.network_id == '' or self.subnet_id == '':
+ print 'Id/tenant id/networkid/subnetId is necessary!'
+
+ Dicdata = {}
+ fixedIp =[]
+ fixedIp.append({'subnet_id':self.subnet_id,'ip_address':'192.168.1.4'})
+ allocation_pools = []
+
+ if self.id != '':
+ Dicdata['id'] = self.id
+ if self.state != '':
+ Dicdata['status'] = self.state
+ if self.bindingHostId != '':
+ Dicdata['binding:host_id'] = self.bindingHostId
+ if self.allowedAddressPairs != '':
+ Dicdata['allowed_address_pairs'] = self.allowedAddressPairs
+ if self.deviceOwner != '':
+ Dicdata['device_owner'] = self.deviceOwner
+ if self.securityGroups != '':
+ Dicdata['security_groups'] = self.securityGroups
+ if self.adminStateUp != '':
+ Dicdata['admin_state_up'] = self.adminStateUp
+ if self.network_id != '':
+ Dicdata['network_id'] = self.network_id
+ if self.tenant_id != '':
+ Dicdata['tenant_id'] = self.tenant_id
+ if self.bindingvifDetails != '':
+ Dicdata['binding:vif_details'] = self.bindingvifDetails
+ if self.bindingvnicType != '':
+ Dicdata['binding:vnic_type'] = self.bindingvnicType
+ if self.bindingvifType != '':
+ Dicdata['binding:vif_type'] = self.bindingvifType
+ if self.macAddress != '':
+ Dicdata['mac_address'] = self.macAddress
+ if self.deviceId != '':
+ Dicdata['device_id'] = self.deviceId
+ if self.name != '':
+ Dicdata['name'] = self.name
+
+ Dicdata['fixed_ips'] = fixedIp
+ Dicdata = {'port': Dicdata}
+
+ return json.dumps(Dicdata,indent=4)
diff --git a/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/__init__.py b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/__init__.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/framework/scripts/function_test/Teston/testcases/FUNCovsdbtest/dependencies/__init__.py