weibit | d503707 | 2014-06-13 10:07:01 -0700 | [diff] [blame] | 1 | package net.onrc.onos.core.topology; |
| 2 | |
| 3 | import static org.junit.Assert.assertEquals; |
| 4 | import static org.junit.Assert.assertFalse; |
| 5 | import static org.junit.Assert.assertNotNull; |
| 6 | import static org.junit.Assert.assertNull; |
| 7 | import static org.junit.Assert.assertTrue; |
| 8 | |
| 9 | import java.util.Iterator; |
| 10 | |
| 11 | import net.floodlightcontroller.util.MACAddress; |
| 12 | |
| 13 | import org.junit.After; |
| 14 | import org.junit.Before; |
| 15 | import org.junit.Test; |
| 16 | |
| 17 | /** |
| 18 | * Unit tests for the TopologyImpl Class in the Topology module. |
| 19 | * These test cases check the sanity of getSwitch/removeSwitch, |
| 20 | * getLink/removeLink, getDevice/removeDevice, and getPort functions and |
| 21 | * verify the data objects inside the global graphDB through a injected network. |
| 22 | * The injected network has a ring topology with a large number of switches (configurable), and |
| 23 | * each switch is associated with one device and connected to two other switches. |
| 24 | */ |
| 25 | public class TopologyImplTest { |
| 26 | private TopologyImpl testTopology; |
| 27 | private static final Long SWITCH_HOST_PORT = 1L; |
| 28 | private static final Long SWITCH_PORT_1 = 2L; |
| 29 | private static final Long SWITCH_PORT_2 = 3L; |
| 30 | |
| 31 | // Set the test network size, it should be larger than 3 |
| 32 | private static final long TEST_SWITCH_NUM = 100L; |
| 33 | |
| 34 | @Before |
| 35 | public void setUp() throws Exception { |
| 36 | // Create the injected network first |
| 37 | testTopology = new TopologyImpl(); |
| 38 | |
| 39 | // Create a number of switches and install two ports for each switch |
| 40 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 41 | SwitchImpl testSwitch = new SwitchImpl(testTopology, switchID); |
| 42 | testSwitch.addPort(SWITCH_PORT_1); |
| 43 | testSwitch.addPort(SWITCH_PORT_2); |
| 44 | testTopology.putSwitch(testSwitch); |
| 45 | |
| 46 | // Create a host for each switch |
| 47 | MACAddress devMac = MACAddress.valueOf(switchID); |
| 48 | DeviceImpl testHost = new DeviceImpl(testTopology, devMac); |
| 49 | testHost.addAttachmentPoint(testSwitch.addPort(SWITCH_HOST_PORT)); |
| 50 | testTopology.putDevice(testHost); |
| 51 | } |
| 52 | |
| 53 | // Create one bidirectional link b/w two switches to construct a ring topology |
| 54 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 55 | LinkImpl testLinkEast = new LinkImpl(testTopology, |
| 56 | testTopology.getPort(switchID, SWITCH_PORT_2), |
| 57 | testTopology.getPort(switchID % TEST_SWITCH_NUM + 1, SWITCH_PORT_1) |
| 58 | ); |
| 59 | LinkImpl testLinkWest = new LinkImpl(testTopology, |
| 60 | testTopology.getPort(switchID % TEST_SWITCH_NUM + 1, SWITCH_PORT_1), |
| 61 | testTopology.getPort(switchID, SWITCH_PORT_2) |
| 62 | ); |
| 63 | testTopology.putLink(testLinkEast); |
| 64 | testTopology.putLink(testLinkWest); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | @After |
| 69 | public void tearDown() throws Exception { |
| 70 | |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Test the result of getSwitch function. |
| 75 | */ |
| 76 | @Test |
| 77 | public void testGetSwitch() { |
| 78 | // Verify the switch is in the graphDB |
| 79 | assertNotNull(testTopology.getSwitch(TEST_SWITCH_NUM - 1)); |
| 80 | |
| 81 | // Verify there is no such switch in the graphDB |
| 82 | assertNull(testTopology.getSwitch(TEST_SWITCH_NUM + 1)); |
| 83 | long swID = 0; |
| 84 | long index = 0; |
| 85 | Iterator<Switch> itr = testTopology.getSwitches().iterator(); |
| 86 | while (itr.hasNext()) { |
| 87 | index++; |
| 88 | swID = itr.next().getDpid(); |
| 89 | assertTrue(swID >= 1 && swID <= TEST_SWITCH_NUM); |
| 90 | } |
| 91 | |
| 92 | // Verify the total number of switches |
| 93 | assertEquals(TEST_SWITCH_NUM, index); |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Test the result of getPort function. |
| 98 | */ |
| 99 | @Test |
| 100 | public void testGetPort() { |
| 101 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 102 | // Verify ports are in the graphDB |
| 103 | assertNotNull(testTopology.getSwitch(switchID).getPort(SWITCH_PORT_1)); |
| 104 | assertNotNull(testTopology.getSwitch(switchID).getPort(SWITCH_PORT_2)); |
| 105 | |
| 106 | // Verify there is no such port in the graphDB |
| 107 | assertNull(testTopology.getSwitch(switchID).getPort(SWITCH_PORT_2 + 1)); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Test the result of getLink function. |
| 113 | */ |
| 114 | @Test |
| 115 | public void testGetLink() { |
| 116 | long sw1ID = 1L; |
| 117 | long sw2ID = 3L; |
| 118 | |
| 119 | // Verify there is no such link b/w these two switches |
| 120 | assertNull((testTopology.getSwitch(sw1ID)).getLinkToNeighbor(sw2ID)); |
| 121 | long index = 0; |
| 122 | Iterator<Link> itr = testTopology.getLinks().iterator(); |
| 123 | while (itr.hasNext()) { |
| 124 | index++; |
| 125 | Link objectLink = itr.next(); |
| 126 | Switch srcSw = (objectLink.getSrcSwitch()); |
| 127 | Switch dstSw = (objectLink.getDstSwitch()); |
| 128 | if (srcSw.getDpid() < TEST_SWITCH_NUM && dstSw.getDpid() < TEST_SWITCH_NUM) { |
| 129 | // Verify the link relationship |
| 130 | assertTrue((srcSw.getDpid() == dstSw.getDpid() - 1 |
| 131 | || (srcSw.getDpid() == dstSw.getDpid() + 1))); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | // Verify the total number of links |
| 136 | assertEquals(TEST_SWITCH_NUM * 2, index); |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Test the result of getOutgoingLink function. |
| 141 | */ |
| 142 | @Test |
| 143 | public void testGetOutgoingLink() { |
| 144 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 145 | assertNotNull(testTopology.getOutgoingLink(switchID, SWITCH_PORT_1)); |
| 146 | assertNotNull(testTopology.getOutgoingLink(switchID, SWITCH_PORT_2)); |
| 147 | |
| 148 | // Verify there is no such link in the graphDB |
| 149 | assertNull(testTopology.getOutgoingLink(switchID, SWITCH_PORT_1 + 2)); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Test the result of getIncomingLink function. |
| 155 | */ |
| 156 | @Test |
| 157 | public void testGetIncomingLink() { |
| 158 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 159 | // Verify the links are in the graphDB |
| 160 | assertNotNull(testTopology.getIncomingLink(switchID, SWITCH_PORT_1)); |
| 161 | assertNotNull(testTopology.getIncomingLink(switchID, SWITCH_PORT_2)); |
| 162 | |
| 163 | // Verify there is no such link in the graphDB |
| 164 | assertNull(testTopology.getIncomingLink(switchID, SWITCH_PORT_1 + 2)); |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Test the result of getDeviceByMac function. |
| 170 | */ |
| 171 | @Test |
| 172 | public void testGetDeviceByMac() { |
| 173 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 174 | MACAddress devMac = MACAddress.valueOf(switchID); |
| 175 | |
| 176 | // Verify the device is in the graphDB |
| 177 | assertNotNull(testTopology.getDeviceByMac(devMac)); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Test the result of removeDevice function. |
| 183 | */ |
| 184 | @Test |
| 185 | public void testRemoveDevice() { |
| 186 | int devCount = 0; |
| 187 | Iterator<Device> itr = testTopology.getDevices().iterator(); |
| 188 | while (itr.hasNext()) { |
| 189 | Device currDev = itr.next(); |
| 190 | testTopology.removeDevice(currDev); |
| 191 | testTopology.getDeviceByMac(currDev.getMacAddress()); |
| 192 | devCount++; |
| 193 | } |
| 194 | |
| 195 | // Verify all hosts have been removed successfully |
| 196 | assertEquals(TEST_SWITCH_NUM, devCount); |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Test the result of removeLink function. |
| 201 | */ |
| 202 | @Test |
| 203 | public void testRemoveLink() { |
| 204 | long index = 0; |
| 205 | Iterator<Link> itr = testTopology.getLinks().iterator(); |
| 206 | while (itr.hasNext()) { |
| 207 | index++; |
| 208 | Link objectLink = itr.next(); |
| 209 | Switch srcSw = (objectLink.getSrcSwitch()); |
| 210 | Port srcPort = objectLink.getSrcPort(); |
| 211 | Switch dstSw = (objectLink.getDstSwitch()); |
| 212 | Port dstPort = objectLink.getDstPort(); |
| 213 | testTopology.removeLink(objectLink); |
| 214 | |
| 215 | // Verify the link was removed successfully |
| 216 | assertNull(testTopology.getLink(srcSw.getDpid(), srcPort.getNumber(), |
| 217 | dstSw.getDpid(), dstPort.getNumber())); |
| 218 | } |
| 219 | |
| 220 | // Verify all links have been removed successfully |
| 221 | assertEquals(TEST_SWITCH_NUM * 2, index); |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Test the result of removeSwitch function. |
| 226 | */ |
| 227 | @Test |
| 228 | public void testRemoveSwitch() { |
| 229 | for (long switchID = 1; switchID <= TEST_SWITCH_NUM; switchID++) { |
| 230 | Iterator<Device> itr = testTopology.getSwitch(switchID).getDevices().iterator(); |
| 231 | while (itr.hasNext()) { |
| 232 | testTopology.removeDevice((Device) itr); |
| 233 | } |
| 234 | testTopology.removeSwitch(switchID); |
| 235 | |
| 236 | // Verify the switch has been removed from the graphDB successfully |
| 237 | assertNull(testTopology.getSwitch(switchID)); |
| 238 | } |
| 239 | |
| 240 | // Verify all switches have been removed successfully |
| 241 | Iterator<Switch> itr = testTopology.getSwitches().iterator(); |
| 242 | assertFalse(itr.hasNext()); |
| 243 | } |
| 244 | } |