@Test
  public void testHARoleChanged() throws IOException {
    StaticFlowEntryPusher staticFlowEntryPusher = new StaticFlowEntryPusher();
    IStorageSourceService storage = createStorageWithFlowEntries();
    MockControllerProvider mfp = getMockControllerProvider();
    staticFlowEntryPusher.setControllerProvider(mfp);
    staticFlowEntryPusher.setStorageSource(storage);
    RestApiServer restApi = new RestApiServer();
    try {
      ModuleContext fmc = new ModuleContext();
      restApi.init(fmc);
    } catch (ModuleException e) {
      e.printStackTrace();
    }
    staticFlowEntryPusher.restApi = restApi;
    staticFlowEntryPusher.startUp(null); // again, to hack unittest

    assert (staticFlowEntryPusher.entry2dpid.containsValue(TestSwitch1DPID));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod1));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod2));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod3));

    // Send a notification that we've changed to slave
    mfp.dispatchRoleChanged(null, Role.SLAVE);
    // Make sure we've removed all our entries
    assert (staticFlowEntryPusher.entry2dpid.isEmpty());
    assert (staticFlowEntryPusher.entriesFromStorage.isEmpty());

    // Send a notification that we've changed to master
    mfp.dispatchRoleChanged(Role.SLAVE, Role.MASTER);
    // Make sure we've learned the entries
    assert (staticFlowEntryPusher.entry2dpid.containsValue(TestSwitch1DPID));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod1));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod2));
    assert (staticFlowEntryPusher.entriesFromStorage.containsValue(FlowMod3));
  }
  @Test
  public void testStaticFlowPush() throws IOException {
    StaticFlowEntryPusher staticFlowEntryPusher = new StaticFlowEntryPusher();
    IStorageSourceService storage = createStorageWithFlowEntries();
    long dpid = HexString.toLong(TestSwitch1DPID);

    // Create a Switch and attach a switch
    IOFSwitch mockSwitch = createNiceMock(IOFSwitch.class);
    Capture<OFMessage> writeCapture = new Capture<OFMessage>(CaptureType.ALL);
    Capture<ListenerContext> contextCapture = new Capture<ListenerContext>(CaptureType.ALL);
    Capture<List<OFMessage>> writeCaptureList = new Capture<List<OFMessage>>(CaptureType.ALL);

    // OFMessageSafeOutStream mockOutStream = createNiceMock(OFMessageSafeOutStream.class);
    mockSwitch.write(capture(writeCapture), capture(contextCapture));
    expectLastCall().anyTimes();
    mockSwitch.write(capture(writeCaptureList), capture(contextCapture));
    expectLastCall().anyTimes();
    mockSwitch.flush();
    expectLastCall().anyTimes();

    staticFlowEntryPusher.setStorageSource(storage);

    ModuleContext fmc = new ModuleContext();

    MockControllerProvider mockControllerProvider = getMockControllerProvider();
    Map<Long, IOFSwitch> switchMap = new HashMap<Long, IOFSwitch>();
    switchMap.put(dpid, mockSwitch);
    // NO ! expect(mockControllerProvider.getSwitches()).andReturn(switchMap).anyTimes();
    mockControllerProvider.setSwitches(switchMap);
    staticFlowEntryPusher.setControllerProvider(mockControllerProvider);
    RestApiServer restApi = new RestApiServer();
    try {
      restApi.init(fmc);
    } catch (ModuleException e) {
      e.printStackTrace();
    }
    staticFlowEntryPusher.restApi = restApi;
    staticFlowEntryPusher.startUp(null); // again, to hack unittest

    // verify that flowpusher read all three entries from storage
    assertEquals(TotalTestRules, staticFlowEntryPusher.countEntries());

    // if someone calls mockSwitch.getOutputStream(), return mockOutStream instead
    // expect(mockSwitch.getOutputStream()).andReturn(mockOutStream).anyTimes();

    // if someone calls getId(), return this dpid instead
    expect(mockSwitch.getId()).andReturn(dpid).anyTimes();
    expect(mockSwitch.getStringId()).andReturn(TestSwitch1DPID).anyTimes();
    replay(mockSwitch);

    // hook the static pusher up to the fake switch
    staticFlowEntryPusher.addedSwitch(mockSwitch);

    verify(mockSwitch);

    // Verify that the switch has gotten some flow_mods
    assertEquals(true, writeCapture.hasCaptured());
    assertEquals(TotalTestRules, writeCapture.getValues().size());

    // Order assumes how things are stored in hash bucket;
    // should be fixed because OFMessage.hashCode() is deterministic
    OFFlowMod firstFlowMod = (OFFlowMod) writeCapture.getValues().get(2);
    verifyFlowMod(firstFlowMod, FlowMod1);
    OFFlowMod secondFlowMod = (OFFlowMod) writeCapture.getValues().get(1);
    verifyFlowMod(secondFlowMod, FlowMod2);
    OFFlowMod thirdFlowMod = (OFFlowMod) writeCapture.getValues().get(0);
    verifyFlowMod(thirdFlowMod, FlowMod3);

    writeCapture.reset();
    contextCapture.reset();

    // delete two rules and verify they've been removed
    // this should invoke staticFlowPusher.rowsDeleted()
    storage.deleteRow(StaticFlowEntryPusher.TABLE_NAME, "TestRule1");
    storage.deleteRow(StaticFlowEntryPusher.TABLE_NAME, "TestRule2");

    assertEquals(1, staticFlowEntryPusher.countEntries());
    assertEquals(2, writeCapture.getValues().size());

    OFFlowMod firstDelete = (OFFlowMod) writeCapture.getValues().get(0);
    FlowMod1.setCommand(OFFlowMod.OFPFC_DELETE_STRICT);
    verifyFlowMod(firstDelete, FlowMod1);

    OFFlowMod secondDelete = (OFFlowMod) writeCapture.getValues().get(1);
    FlowMod2.setCommand(OFFlowMod.OFPFC_DELETE_STRICT);
    verifyFlowMod(secondDelete, FlowMod2);

    // add rules back to make sure that staticFlowPusher.rowsInserted() works
    writeCapture.reset();
    FlowMod2.setCommand(OFFlowMod.OFPFC_ADD);
    storage.insertRow(StaticFlowEntryPusher.TABLE_NAME, TestRule2);
    assertEquals(2, staticFlowEntryPusher.countEntries());
    assertEquals(1, writeCaptureList.getValues().size());
    List<OFMessage> outList = (List<OFMessage>) writeCaptureList.getValues().get(0);
    assertEquals(1, outList.size());
    OFFlowMod firstAdd = (OFFlowMod) outList.get(0);
    verifyFlowMod(firstAdd, FlowMod2);
    writeCapture.reset();
    contextCapture.reset();
    writeCaptureList.reset();

    // now try an overwriting update, calling staticFlowPusher.rowUpdated()
    TestRule3.put(COLUMN_DL_VLAN, 333);
    storage.updateRow(StaticFlowEntryPusher.TABLE_NAME, TestRule3);
    assertEquals(2, staticFlowEntryPusher.countEntries());
    assertEquals(1, writeCaptureList.getValues().size());

    outList = (List<OFMessage>) writeCaptureList.getValues().get(0);
    assertEquals(2, outList.size());
    OFFlowMod removeFlowMod = (OFFlowMod) outList.get(0);
    FlowMod3.setCommand(OFFlowMod.OFPFC_DELETE_STRICT);
    verifyFlowMod(removeFlowMod, FlowMod3);
    FlowMod3.setCommand(OFFlowMod.OFPFC_ADD);
    FlowMod3.getMatch().fromString("dl_dst=00:20:30:40:50:60,dl_vlan=333");
    OFFlowMod updateFlowMod = (OFFlowMod) outList.get(1);
    verifyFlowMod(updateFlowMod, FlowMod3);
    writeCaptureList.reset();

    // now try an action modifying update, calling staticFlowPusher.rowUpdated()
    TestRule3.put(COLUMN_ACTIONS, "output=controller,strip-vlan"); // added strip-vlan
    storage.updateRow(StaticFlowEntryPusher.TABLE_NAME, TestRule3);
    assertEquals(2, staticFlowEntryPusher.countEntries());
    assertEquals(1, writeCaptureList.getValues().size());

    outList = (List<OFMessage>) writeCaptureList.getValues().get(0);
    assertEquals(1, outList.size());
    OFFlowMod modifyFlowMod = (OFFlowMod) outList.get(0);
    FlowMod3.setCommand(OFFlowMod.OFPFC_MODIFY_STRICT);
    List<OFAction> modifiedActions = FlowMod3.getActions();
    modifiedActions.add(
        new OFActionStripVirtualLan()); // add the new action to what we should expect
    FlowMod3.setActions(modifiedActions);
    FlowMod3.setLengthU(OFFlowMod.MINIMUM_LENGTH + 16); // accommodate the addition of new actions
    verifyFlowMod(modifyFlowMod, FlowMod3);
  }