Move all REST test related files into org.onosproject.rest.resources

Move all REST test case classes under org.onosproject.rest.resources
package in a way to improve naming consistency.

Change-Id: I0a154fe492b90aa426e6af38a3c08d7c1ee8d031
diff --git a/web/api/src/test/java/org/onosproject/rest/resources/FlowsResourceTest.java b/web/api/src/test/java/org/onosproject/rest/resources/FlowsResourceTest.java
new file mode 100644
index 0000000..5d9231d
--- /dev/null
+++ b/web/api/src/test/java/org/onosproject/rest/resources/FlowsResourceTest.java
@@ -0,0 +1,617 @@
+/*
+ * Copyright 2014-2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.rest.resources;
+
+import com.eclipsesource.json.Json;
+import com.eclipsesource.json.JsonArray;
+import com.eclipsesource.json.JsonObject;
+import com.google.common.collect.ImmutableSet;
+import org.hamcrest.Description;
+import org.hamcrest.Matchers;
+import org.hamcrest.TypeSafeMatcher;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.osgi.ServiceDirectory;
+import org.onlab.osgi.TestServiceDirectory;
+import org.onlab.packet.MacAddress;
+import org.onlab.rest.BaseResource;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.codec.impl.FlowRuleCodec;
+import org.onosproject.core.CoreService;
+import org.onosproject.core.DefaultGroupId;
+import org.onosproject.core.GroupId;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.IndexedLambda;
+import org.onosproject.net.NetTestTools;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowEntry;
+import org.onosproject.net.flow.FlowId;
+import org.onosproject.net.flow.FlowRule;
+import org.onosproject.net.flow.FlowRuleExtPayLoad;
+import org.onosproject.net.flow.FlowRuleService;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.criteria.Criterion;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instructions;
+
+import javax.ws.rs.NotFoundException;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.easymock.EasyMock.anyObject;
+import static org.easymock.EasyMock.anyShort;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.expectLastCall;
+import static org.easymock.EasyMock.replay;
+import static org.easymock.EasyMock.verify;
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.not;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
+import static org.onosproject.net.NetTestTools.APP_ID;
+
+/**
+ * Unit tests for Flows REST APIs.
+ */
+public class FlowsResourceTest extends ResourceTest {
+    final FlowRuleService mockFlowService = createMock(FlowRuleService.class);
+    CoreService mockCoreService = createMock(CoreService.class);
+
+    final HashMap<DeviceId, Set<FlowEntry>> rules = new HashMap<>();
+
+    final DeviceService mockDeviceService = createMock(DeviceService.class);
+
+    final DeviceId deviceId1 = DeviceId.deviceId("1");
+    final DeviceId deviceId2 = DeviceId.deviceId("2");
+    final DeviceId deviceId3 = DeviceId.deviceId("3");
+    final Device device1 = new DefaultDevice(null, deviceId1, Device.Type.OTHER,
+            "", "", "", "", null);
+    final Device device2 = new DefaultDevice(null, deviceId2, Device.Type.OTHER,
+            "", "", "", "", null);
+
+    final MockFlowEntry flow1 = new MockFlowEntry(deviceId1, 1);
+    final MockFlowEntry flow2 = new MockFlowEntry(deviceId1, 2);
+
+    final MockFlowEntry flow3 = new MockFlowEntry(deviceId2, 3);
+    final MockFlowEntry flow4 = new MockFlowEntry(deviceId2, 4);
+
+    final MockFlowEntry flow5 = new MockFlowEntry(deviceId2, 5);
+    final MockFlowEntry flow6 = new MockFlowEntry(deviceId2, 6);
+
+    /**
+     * Mock class for a flow entry.
+     */
+    private static class MockFlowEntry implements FlowEntry {
+        final DeviceId deviceId;
+        final long baseValue;
+        TrafficTreatment treatment;
+        TrafficSelector selector;
+
+        public MockFlowEntry(DeviceId deviceId, long id) {
+            this.deviceId = deviceId;
+            this.baseValue = id * 100;
+        }
+
+        @Override
+        public FlowEntryState state() {
+            return FlowEntryState.ADDED;
+        }
+
+        @Override
+        public long life() {
+            return baseValue + 11;
+        }
+
+        @Override
+        public long packets() {
+            return baseValue + 22;
+        }
+
+        @Override
+        public long bytes() {
+            return baseValue + 33;
+        }
+
+        @Override
+        public long lastSeen() {
+            return baseValue + 44;
+        }
+
+        @Override
+        public int errType() {
+            return 0;
+        }
+
+        @Override
+        public int errCode() {
+            return 0;
+        }
+
+        @Override
+        public FlowId id() {
+            final long id = baseValue + 55;
+            return FlowId.valueOf(id);
+        }
+
+        @Override
+        public GroupId groupId() {
+            return new DefaultGroupId(3);
+        }
+
+        @Override
+        public short appId() {
+            return 2;
+        }
+
+        @Override
+        public int priority() {
+            return (int) (baseValue + 66);
+        }
+
+        @Override
+        public DeviceId deviceId() {
+            return deviceId;
+        }
+
+        @Override
+        public TrafficSelector selector() {
+            return selector;
+        }
+
+        @Override
+        public TrafficTreatment treatment() {
+            return treatment;
+        }
+
+        @Override
+        public int timeout() {
+            return (int) (baseValue + 77);
+        }
+
+        @Override
+        public boolean isPermanent() {
+            return false;
+        }
+
+        @Override
+        public int tableId() {
+            return 0;
+        }
+
+        @Override
+        public boolean exactMatch(FlowRule rule) {
+            return false;
+        }
+
+        @Override
+        public FlowRuleExtPayLoad payLoad() {
+            return null;
+        }
+    }
+
+    /**
+     * Populates some flows used as testing data.
+     */
+    private void setupMockFlows() {
+        flow2.treatment = DefaultTrafficTreatment.builder()
+                .add(Instructions.modL0Lambda(new IndexedLambda((short) 4)))
+                .add(Instructions.modL0Lambda(new IndexedLambda((short) 5)))
+                .setEthDst(MacAddress.BROADCAST)
+                .build();
+        flow2.selector = DefaultTrafficSelector.builder()
+                .matchEthType((short) 3)
+                .matchIPProtocol((byte) 9)
+                .build();
+        flow4.treatment = DefaultTrafficTreatment.builder()
+                .add(Instructions.modL0Lambda(new IndexedLambda((short) 6)))
+                .build();
+        final Set<FlowEntry> flows1 = new HashSet<>();
+        flows1.add(flow1);
+        flows1.add(flow2);
+
+        final Set<FlowEntry> flows2 = new HashSet<>();
+        flows2.add(flow3);
+        flows2.add(flow4);
+
+        rules.put(deviceId1, flows1);
+        rules.put(deviceId2, flows2);
+
+        expect(mockFlowService.getFlowEntries(deviceId1))
+                .andReturn(rules.get(deviceId1)).anyTimes();
+        expect(mockFlowService.getFlowEntries(deviceId2))
+                .andReturn(rules.get(deviceId2)).anyTimes();
+    }
+
+    /**
+     * Sets up the global values for all the tests.
+     */
+    @Before
+    public void setUpTest() {
+        // Mock device service
+        expect(mockDeviceService.getDevice(deviceId1))
+                .andReturn(device1);
+        expect(mockDeviceService.getDevice(deviceId2))
+                .andReturn(device2);
+        expect(mockDeviceService.getDevices())
+                .andReturn(ImmutableSet.of(device1, device2));
+
+        // Mock Core Service
+        expect(mockCoreService.getAppId(anyShort()))
+                .andReturn(NetTestTools.APP_ID).anyTimes();
+        expect(mockCoreService.registerApplication(FlowRuleCodec.REST_APP_ID))
+                .andReturn(APP_ID).anyTimes();
+        replay(mockCoreService);
+
+        // Register the services needed for the test
+        final CodecManager codecService =  new CodecManager();
+        codecService.activate();
+        ServiceDirectory testDirectory =
+                new TestServiceDirectory()
+                        .add(FlowRuleService.class, mockFlowService)
+                        .add(DeviceService.class, mockDeviceService)
+                        .add(CodecService.class, codecService)
+                        .add(CoreService.class, mockCoreService);
+
+        BaseResource.setServiceDirectory(testDirectory);
+    }
+
+    /**
+     * Cleans up and verifies the mocks.
+     */
+    @After
+    public void tearDownTest() {
+        verify(mockFlowService);
+        verify(mockCoreService);
+    }
+
+    /**
+     * Hamcrest matcher to check that a flow representation in JSON matches
+     * the actual flow entry.
+     */
+    public static class FlowJsonMatcher extends TypeSafeMatcher<JsonObject> {
+        private final FlowEntry flow;
+        private final String expectedAppId;
+        private String reason = "";
+
+        public FlowJsonMatcher(FlowEntry flowValue, String expectedAppIdValue) {
+            flow = flowValue;
+            expectedAppId = expectedAppIdValue;
+        }
+
+        @Override
+        public boolean matchesSafely(JsonObject jsonFlow) {
+            // check id
+            final String jsonId = jsonFlow.get("id").asString();
+            final String flowId = Long.toString(flow.id().value());
+            if (!jsonId.equals(flowId)) {
+                reason = "id " + flow.id().toString();
+                return false;
+            }
+
+            // check application id
+            final String jsonAppId = jsonFlow.get("appId").asString();
+            if (!jsonAppId.equals(expectedAppId)) {
+                reason = "appId " + Short.toString(flow.appId());
+                return false;
+            }
+
+            // check device id
+            final String jsonDeviceId = jsonFlow.get("deviceId").asString();
+            if (!jsonDeviceId.equals(flow.deviceId().toString())) {
+                reason = "deviceId " + flow.deviceId();
+                return false;
+            }
+
+            // check treatment and instructions array
+            if (flow.treatment() != null) {
+                final JsonObject jsonTreatment = jsonFlow.get("treatment").asObject();
+                final JsonArray jsonInstructions = jsonTreatment.get("instructions").asArray();
+                if (flow.treatment().immediate().size() != jsonInstructions.size()) {
+                    reason = "instructions array size of " +
+                            Integer.toString(flow.treatment().immediate().size());
+                    return false;
+                }
+                for (final Instruction instruction : flow.treatment().immediate()) {
+                    boolean instructionFound = false;
+                    for (int instructionIndex = 0; instructionIndex < jsonInstructions.size(); instructionIndex++) {
+                        final String jsonType =
+                                jsonInstructions.get(instructionIndex)
+                                        .asObject().get("type").asString();
+                        final String instructionType = instruction.type().name();
+                        if (jsonType.equals(instructionType)) {
+                            instructionFound = true;
+                        }
+                    }
+                    if (!instructionFound) {
+                        reason = "instruction " + instruction.toString();
+                        return false;
+                    }
+                }
+            }
+
+            // check selector and criteria array
+            if (flow.selector() != null) {
+                final JsonObject jsonTreatment = jsonFlow.get("selector").asObject();
+                final JsonArray jsonCriteria = jsonTreatment.get("criteria").asArray();
+                if (flow.selector().criteria().size() != jsonCriteria.size()) {
+                    reason = "criteria array size of " +
+                            Integer.toString(flow.selector().criteria().size());
+                    return false;
+                }
+                for (final Criterion criterion : flow.selector().criteria()) {
+                    boolean criterionFound = false;
+
+                    for (int criterionIndex = 0; criterionIndex < jsonCriteria.size(); criterionIndex++) {
+                        final String jsonType =
+                                jsonCriteria.get(criterionIndex)
+                                        .asObject().get("type").asString();
+                        final String criterionType = criterion.type().name();
+                        if (jsonType.equals(criterionType)) {
+                            criterionFound = true;
+                        }
+                    }
+                    if (!criterionFound) {
+                        reason = "criterion " + criterion.toString();
+                        return false;
+                    }
+                }
+            }
+
+            return true;
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText(reason);
+        }
+    }
+
+    /**
+     * Factory to allocate a flow matcher.
+     *
+     * @param flow flow object we are looking for
+     * @return matcher
+     */
+    private static FlowJsonMatcher matchesFlow(FlowEntry flow, String expectedAppName) {
+        return new FlowJsonMatcher(flow, expectedAppName);
+    }
+
+    /**
+     * Hamcrest matcher to check that a flow is represented properly in a JSON
+     * array of flows.
+     */
+    public static class FlowJsonArrayMatcher extends TypeSafeMatcher<JsonArray> {
+        private final FlowEntry flow;
+        private String reason = "";
+
+        public FlowJsonArrayMatcher(FlowEntry flowValue) {
+            flow = flowValue;
+        }
+
+        @Override
+        public boolean matchesSafely(JsonArray json) {
+            boolean flowFound = false;
+
+            for (int jsonFlowIndex = 0; jsonFlowIndex < json.size();
+                 jsonFlowIndex++) {
+
+                final JsonObject jsonFlow = json.get(jsonFlowIndex).asObject();
+
+                final String flowId = Long.toString(flow.id().value());
+                final String jsonFlowId = jsonFlow.get("id").asString();
+                if (jsonFlowId.equals(flowId)) {
+                    flowFound = true;
+
+                    //  We found the correct flow, check attribute values
+                    assertThat(jsonFlow, matchesFlow(flow, APP_ID.name()));
+                }
+            }
+            if (!flowFound) {
+                reason = "Flow with id " + flow.id().toString() + " not found";
+                return false;
+            } else {
+                return true;
+            }
+        }
+
+        @Override
+        public void describeTo(Description description) {
+            description.appendText(reason);
+        }
+    }
+
+    /**
+     * Factory to allocate a flow array matcher.
+     *
+     * @param flow flow object we are looking for
+     * @return matcher
+     */
+    private static FlowJsonArrayMatcher hasFlow(FlowEntry flow) {
+        return new FlowJsonArrayMatcher(flow);
+    }
+
+    /**
+     * Tests the result of the rest api GET when there are no flows.
+     */
+    @Test
+    public void testFlowsEmptyArray() {
+        expect(mockFlowService.getFlowEntries(deviceId1))
+                .andReturn(null).anyTimes();
+        expect(mockFlowService.getFlowEntries(deviceId2))
+                .andReturn(null).anyTimes();
+        replay(mockFlowService);
+        replay(mockDeviceService);
+        final WebTarget wt = target();
+        final String response = wt.path("flows").request().get(String.class);
+        assertThat(response, is("{\"flows\":[]}"));
+    }
+
+    /**
+     * Tests the result of the rest api GET when there are active flows.
+     */
+    @Test
+    public void testFlowsPopulatedArray() {
+        setupMockFlows();
+        replay(mockFlowService);
+        replay(mockDeviceService);
+        final WebTarget wt = target();
+        final String response = wt.path("flows").request().get(String.class);
+        final JsonObject result = Json.parse(response).asObject();
+        assertThat(result, notNullValue());
+
+        assertThat(result.names(), hasSize(1));
+        assertThat(result.names().get(0), is("flows"));
+        final JsonArray jsonFlows = result.get("flows").asArray();
+        assertThat(jsonFlows, notNullValue());
+        assertThat(jsonFlows, hasFlow(flow1));
+        assertThat(jsonFlows, hasFlow(flow2));
+        assertThat(jsonFlows, hasFlow(flow3));
+        assertThat(jsonFlows, hasFlow(flow4));
+    }
+
+    /**
+     * Tests the result of a rest api GET for a device.
+     */
+    @Test
+    public void testFlowsSingleDevice() {
+        setupMockFlows();
+        final Set<FlowEntry> flows = new HashSet<>();
+        flows.add(flow5);
+        flows.add(flow6);
+        expect(mockFlowService.getFlowEntries(anyObject()))
+                .andReturn(flows).anyTimes();
+        replay(mockFlowService);
+        replay(mockDeviceService);
+        final WebTarget wt = target();
+        final String response = wt.path("flows/" + deviceId3).request().get(String.class);
+        final JsonObject result = Json.parse(response).asObject();
+        assertThat(result, notNullValue());
+
+        assertThat(result.names(), hasSize(1));
+        assertThat(result.names().get(0), is("flows"));
+        final JsonArray jsonFlows = result.get("flows").asArray();
+        assertThat(jsonFlows, notNullValue());
+        assertThat(jsonFlows, hasFlow(flow5));
+        assertThat(jsonFlows, hasFlow(flow6));
+    }
+
+    /**
+     * Tests the result of a rest api GET for a device.
+     */
+    @Test
+    public void testFlowsSingleDeviceWithFlowId() {
+        setupMockFlows();
+        final Set<FlowEntry> flows = new HashSet<>();
+        flows.add(flow5);
+        flows.add(flow6);
+        expect(mockFlowService.getFlowEntries(anyObject()))
+                .andReturn(flows).anyTimes();
+        replay(mockFlowService);
+        replay(mockDeviceService);
+        final WebTarget wt = target();
+        final String response = wt.path("flows/" + deviceId3 + "/"
+                + Long.toString(flow5.id().value())).request().get(String.class);
+        final JsonObject result = Json.parse(response).asObject();
+        assertThat(result, notNullValue());
+
+        assertThat(result.names(), hasSize(1));
+        assertThat(result.names().get(0), is("flows"));
+        final JsonArray jsonFlows = result.get("flows").asArray();
+        assertThat(jsonFlows, notNullValue());
+        assertThat(jsonFlows, hasFlow(flow5));
+        assertThat(jsonFlows, not(hasFlow(flow6)));
+    }
+
+    /**
+     * Tests that a fetch of a non-existent device object throws an exception.
+     */
+    @Test
+    public void testBadGet() {
+        expect(mockFlowService.getFlowEntries(anyObject()))
+                .andReturn(null).anyTimes();
+        replay(mockFlowService);
+        replay(mockDeviceService);
+
+        WebTarget wt = target();
+        try {
+            wt.path("flows/0").request().get(String.class);
+            fail("Fetch of non-existent device did not throw an exception");
+        } catch (NotFoundException ex) {
+            assertThat(ex.getMessage(),
+                    containsString("HTTP 404 Not Found"));
+        }
+    }
+
+    /**
+     * Tests creating a flow with POST.
+     */
+    @Test
+    public void testPost() {
+        mockFlowService.applyFlowRules(anyObject());
+        expectLastCall();
+        replay(mockFlowService);
+
+        WebTarget wt = target();
+        InputStream jsonStream = FlowsResourceTest.class
+                .getResourceAsStream("post-flow.json");
+
+        Response response = wt.path("flows/of:0000000000000001")
+                .request(MediaType.APPLICATION_JSON_TYPE)
+                .post(Entity.json(jsonStream));
+        assertThat(response.getStatus(), is(HttpURLConnection.HTTP_CREATED));
+        String location = response.getLocation().getPath();
+        assertThat(location, Matchers.startsWith("/flows/of:0000000000000001/"));
+    }
+
+    /**
+     * Tests deleting a flow.
+     */
+    @Test
+    public void testDelete() {
+        setupMockFlows();
+        mockFlowService.removeFlowRules(anyObject());
+        expectLastCall();
+        replay(mockFlowService);
+
+        WebTarget wt = target();
+
+        String location = "/flows/1/155";
+
+        Response deleteResponse = wt.path(location)
+                .request(MediaType.APPLICATION_JSON_TYPE)
+                .delete();
+        assertThat(deleteResponse.getStatus(),
+                is(HttpURLConnection.HTTP_NO_CONTENT));
+    }
+}