diff --git a/core/api/src/test/java/org/onosproject/net/optical/device/OmsPortHelperTest.java b/core/api/src/test/java/org/onosproject/net/optical/device/OmsPortHelperTest.java
new file mode 100644
index 0000000..c8c68f4
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/optical/device/OmsPortHelperTest.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2016-present 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.net.optical.device;
+
+import static org.hamcrest.Matchers.*;
+import static org.junit.Assert.*;
+
+import java.util.Optional;
+
+import org.junit.Test;
+import org.onlab.packet.ChassisId;
+import org.onlab.util.Frequency;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.DefaultPort;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.device.PortDescription;
+import org.onosproject.net.optical.OmsPort;
+import org.onosproject.net.Device.Type;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Tests for {@link OmsPortHelper}.
+ */
+public class OmsPortHelperTest {
+
+    private static final ProviderId PID = new ProviderId("test", "id");
+    private static final DeviceId DID = DeviceId.deviceId("test:00123");
+    private static final String MFC = "MFC";
+    private static final String HW = "HW V";
+    private static final String SW = "SW V";
+    private static final String SER = "SER";
+    private static final ChassisId CHS = new ChassisId(42);
+    private static final Annotations DEV_ANON = DefaultAnnotations.EMPTY;
+    private static final Device DEV = new DefaultDevice(PID, DID, Type.ROADM, MFC, HW, SW, SER, CHS, DEV_ANON);
+
+
+    @Test
+    public void testOmsPortDescriptionCanBeConvertedToOmsPort() {
+        PortNumber pn = PortNumber.portNumber(4900);
+
+        boolean isEnabled = true;
+        String anKey = "Base";
+        String anValue = "value";
+        SparseAnnotations an = DefaultAnnotations.builder()
+                .set(anKey, anValue)
+                .build();
+
+        Frequency minF = Frequency.ofGHz(3);
+        Frequency maxF = Frequency.ofGHz(33);
+        Frequency grid = Frequency.ofGHz(2);
+
+        PortDescription portDescription = OmsPortHelper.omsPortDescription(pn, isEnabled, minF, maxF, grid, an);
+        Port port = new DefaultPort(DEV,
+                                    portDescription.portNumber(),
+                                    portDescription.isEnabled(),
+                                    portDescription.type(),
+                                    portDescription.portSpeed(),
+                                    portDescription.annotations());
+
+        Optional<OmsPort> maybeOms = OmsPortHelper.asOmsPort(port);
+        assertTrue(maybeOms.isPresent());
+
+        OmsPort oms = maybeOms.get();
+
+        assertThat(oms.isEnabled(), is(isEnabled));
+        assertThat(oms.number(), is(pn));
+        assertThat(oms.annotations().value(anKey), is(anValue));
+
+        assertThat("type is always OMS", oms.type(), is(Port.Type.OMS));
+        assertThat("port speed is undefined", oms.portSpeed(), is(equalTo(0L)));
+
+        assertThat(oms.maxFrequency(), is(maxF));
+        assertThat(oms.minFrequency(), is(minF));
+        assertThat(oms.grid(), is(grid));
+        assertThat("(33-3)/2 = 15", oms.totalChannels(), is((short) 15));
+    }
+
+}
diff --git a/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java b/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java
new file mode 100644
index 0000000..4f32afc
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/optical/impl/DefaultOmsPortTest.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2016-present 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.net.optical.impl;
+
+import static org.hamcrest.Matchers.*;
+import static org.junit.Assert.*;
+import static org.onosproject.net.PortNumber.portNumber;
+
+import org.junit.Test;
+import org.onlab.packet.ChassisId;
+import org.onlab.util.Frequency;
+import org.onosproject.net.Annotations;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultDevice;
+import org.onosproject.net.DefaultPort;
+import org.onosproject.net.Device;
+import org.onosproject.net.Device.Type;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.optical.OmsPort;
+import org.onosproject.net.provider.ProviderId;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Tests for {@link DefaultOmsPort}.
+ */
+public class DefaultOmsPortTest {
+
+    private static final ProviderId PID = new ProviderId("test", "id");
+    private static final DeviceId DID = DeviceId.deviceId("test:00123");
+    private static final String MFC = "MFC";
+    private static final String HW = "HW V";
+    private static final String SW = "SW V";
+    private static final String SER = "SER";
+    private static final ChassisId CHS = new ChassisId(42);
+    private static final Annotations DEV_ANON = DefaultAnnotations.EMPTY;
+    private static final Device DEV = new DefaultDevice(PID, DID, Type.ROADM, MFC, HW, SW, SER, CHS, DEV_ANON);
+
+    @Test
+    public void testEquality() {
+        PortNumber pn = PortNumber.portNumber(4900);
+        Annotations an = DefaultAnnotations.builder()
+                .set("Base", "value")
+                .build();
+        Annotations an2 = DefaultAnnotations.builder()
+                .set("Base", "value2")
+                .build();
+
+        Port base = new DefaultPort(DEV, pn, true, Port.Type.VIRTUAL, 2, an);
+        Frequency minF = Frequency.ofGHz(3);
+        Frequency maxF = Frequency.ofGHz(33);
+        Frequency grid = Frequency.ofGHz(2);
+
+        // reference OMS port
+        OmsPort oms = new DefaultOmsPort(base, minF, maxF, grid);
+
+        new EqualsTester()
+          .addEqualityGroup(oms,
+                            // different base port type or portspeed is ignored
+                            new DefaultOmsPort(new DefaultPort(DEV, pn, true, an), minF, maxF, grid))
+          // different port number
+          .addEqualityGroup(new DefaultOmsPort(new DefaultPort(DEV, portNumber(1), true, an), minF, maxF, grid))
+          // different isEnabled
+          .addEqualityGroup(new DefaultOmsPort(new DefaultPort(DEV, pn, false, an), minF, maxF, grid))
+          // different annotation
+          .addEqualityGroup(new DefaultOmsPort(new DefaultPort(DEV, pn, true, an2), minF, maxF, grid))
+          // different minFreq
+          .addEqualityGroup(new DefaultOmsPort(base, Frequency.ofKHz(3), maxF, grid))
+          // different maxFreq
+          .addEqualityGroup(new DefaultOmsPort(base, minF, Frequency.ofKHz(33), grid))
+          // different grid
+          .addEqualityGroup(new DefaultOmsPort(base, minF, maxF, Frequency.ofKHz(2)))
+          .testEquals();
+
+    }
+
+    @Test
+    public void basicTests() {
+        PortNumber pn = PortNumber.portNumber(4900);
+        Annotations annotations = DefaultAnnotations.builder()
+                                .set("Base", "value")
+                                .build();
+
+        boolean isEnabled = true;
+        Port base = new DefaultPort(DEV, pn, isEnabled, Port.Type.VIRTUAL, 2, annotations);
+        Frequency minFrequency = Frequency.ofGHz(3);
+        Frequency maxFrequency = Frequency.ofGHz(33);
+        Frequency grid = Frequency.ofGHz(2);
+        OmsPort oms = new DefaultOmsPort(base, minFrequency, maxFrequency, grid);
+
+        // basic attributes and annotations are inherited from base
+        assertThat(oms.element(), is(DEV));
+        assertThat(oms.isEnabled(), is(isEnabled));
+        assertThat(oms.number(), is(pn));
+        assertThat(oms.annotations(), is(annotations));
+
+        assertThat("type is always OMS", oms.type(), is(Port.Type.OMS));
+        assertThat("port speed is undefined", oms.portSpeed(), is(equalTo(0L)));
+
+        assertThat(oms.maxFrequency(), is(maxFrequency));
+        assertThat(oms.minFrequency(), is(minFrequency));
+        assertThat(oms.grid(), is(grid));
+        assertThat("(33-3)/2 = 15", oms.totalChannels(), is((short) 15));
+    }
+
+}