diff --git a/core/api/src/test/java/org/onosproject/net/pi/runtime/PiCounterCellDataTest.java b/core/api/src/test/java/org/onosproject/net/pi/runtime/PiCounterCellDataTest.java
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+++ b/core/api/src/test/java/org/onosproject/net/pi/runtime/PiCounterCellDataTest.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.pi.runtime;
+
+import com.google.common.testing.EqualsTester;
+import org.junit.Test;
+import org.onosproject.net.pi.model.PiActionId;
+import org.onosproject.net.pi.model.PiCounterId;
+import org.onosproject.net.pi.model.PiTableId;
+
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+import static org.onosproject.net.pi.runtime.PiConstantsTest.DROP;
+
+/**
+ * Unit tests for PiCounterCellData class.
+ */
+public class PiCounterCellDataTest {
+
+    private static final PiCounterId PI_COUNTER_ID_1 = PiCounterId.of("Name1");
+    private static final PiCounterId PI_COUNTER_ID_2 = PiCounterId.of("Name2");
+
+    private static final PiTableEntry PI_TABLE_ENTRY_1 = PiTableEntry.builder()
+            .forTable(PiTableId.of("T10"))
+            .withCookie(0xac)
+            .withPriority(10)
+            .withAction(PiAction.builder().withId(PiActionId.of(DROP)).build())
+            .withTimeout(100)
+            .build();
+    private static final PiTableEntry PI_TABLE_ENTRY_2 = PiTableEntry.builder()
+            .forTable(PiTableId.of("T20"))
+            .withCookie(0xac)
+            .withPriority(10)
+            .withAction(PiAction.builder().withId(PiActionId.of(DROP)).build())
+            .withTimeout(1000)
+            .build();
+
+    private static final PiCounterCellId PI_COUNTER_CELL_ID_1 =
+            PiCounterCellId.ofDirect(PI_COUNTER_ID_1, PI_TABLE_ENTRY_1);
+    private static final PiCounterCellId PI_COUNTER_CELL_ID_2 =
+            PiCounterCellId.ofDirect(PI_COUNTER_ID_2, PI_TABLE_ENTRY_2);
+
+    private static final long PACKETS_1 = 10;
+    private static final long PACKETS_2 = 20;
+    private static final long BYTES_1 = 100;
+    private static final long BYTES_2 = 200;
+
+    private static final PiCounterCellData PI_COUNTER_CELL_DATA_1 =
+            new PiCounterCellData(PI_COUNTER_CELL_ID_1, PACKETS_1, BYTES_1);
+    private static final PiCounterCellData SAME_AS_PI_COUNTER_CELL_DATA_1 =
+            new PiCounterCellData(PI_COUNTER_CELL_ID_1, PACKETS_1, BYTES_1);
+    private static final PiCounterCellData PI_COUNTER_CELL_DATA_2 =
+            new PiCounterCellData(PI_COUNTER_CELL_ID_2, PACKETS_2, BYTES_2);
+
+    /**
+     * Checks that the PiCounterCellData class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(PiCounterCellData.class);
+    }
+
+    /**
+     * Checks the operation of equals(), hashCode() and toString() methods.
+     */
+    @Test
+    public void testEquals() {
+        new EqualsTester()
+                .addEqualityGroup(PI_COUNTER_CELL_DATA_1, SAME_AS_PI_COUNTER_CELL_DATA_1)
+                .addEqualityGroup(PI_COUNTER_CELL_DATA_2)
+                .testEquals();
+    }
+}
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