X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Ftest%2Fbase.py;fp=src%2Femuvim%2Ftest%2Fbase.py;h=f65225919851b232f312f3051e225eaa9ca3f6cb;hb=41006b7133d28c2f2c5a95fdeb37962037c305a0;hp=0000000000000000000000000000000000000000;hpb=a769d95a4ee55df7b12d93c10c71d29dff62cbeb;p=osm%2Fvim-emu.git

diff --git a/src/emuvim/test/base.py b/src/emuvim/test/base.py
new file mode 100644
index 0000000..f652259
--- /dev/null
+++ b/src/emuvim/test/base.py
@@ -0,0 +1,91 @@
+"""
+Helper module that implements helpers for test implementations.
+"""
+
+import unittest
+import os
+import subprocess
+import docker
+from emuvim.dcemulator.net import DCNetwork
+from mininet.clean import cleanup
+
+class SimpleTestTopology(unittest.TestCase):
+    """
+        Helper class to do basic test setups.
+        s1 -- s2 -- s3 -- ... -- sN
+    """
+
+    def __init__(self, *args, **kwargs):
+        self.net = None
+        self.s = []   # list of switches
+        self.h = []   # list of hosts
+        self.d = []   # list of docker containers
+        self.dc = []  # list of data centers
+        self.docker_cli = None
+        super(SimpleTestTopology, self).__init__(*args, **kwargs)
+
+    def createNet(
+            self,
+            nswitches=0, ndatacenter=0, nhosts=0, ndockers=0,
+            autolinkswitches=False):
+        """
+        Creates a Mininet instance and automatically adds some
+        nodes to it.
+        """
+        self.net = net = DCNetwork()
+
+        # add some switches
+        for i in range(0, nswitches):
+            self.s.append(self.net.addSwitch('s%d' % i))
+        # if specified, chain all switches
+        if autolinkswitches:
+            for i in range(0, len(self.s) - 1):
+                self.net.addLink(self.s[i], self.s[i + 1])
+        # add some data centers
+        for i in range(0, ndatacenter):
+            self.dc.append(
+                self.net.addDatacenter(
+                    'datacenter%d' % i,
+                    metadata={"unittest_dc": i}))
+        # add some hosts
+        for i in range(0, nhosts):
+            self.h.append(self.net.addHost('h%d' % i))
+        # add some dockers
+        for i in range(0, ndockers):
+            self.d.append(self.net.addDocker('d%d' % i, dimage="ubuntu"))
+
+    def startNet(self):
+        self.net.start()
+
+    def stopNet(self):
+        self.net.stop()
+
+    def getDockerCli(self):
+        """
+        Helper to interact with local docker instance.
+        """
+        if self.docker_cli is None:
+            self.docker_cli = docker.Client(
+                base_url='unix://var/run/docker.sock')
+        return self.docker_cli
+
+    def getDockernetContainers(self):
+        """
+        List the containers managed by dockernet
+        """
+        return self.getDockerCli().containers(filters={"label": "com.dockernet"})
+
+    @staticmethod
+    def setUp():
+        pass
+
+    @staticmethod
+    def tearDown():
+        cleanup()
+        # make sure that all pending docker containers are killed
+        with open(os.devnull, 'w') as devnull:
+            subprocess.call(
+                "sudo docker rm -f $(sudo docker ps --filter 'label=com.dockernet' -a -q)",
+                stdout=devnull,
+                stderr=devnull,
+                shell=True)
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