diff --git a/kotlin/src/main/kotlin/com/baeldung/kotlin/User.kt b/kotlin/src/main/kotlin/com/baeldung/kotlin/User.kt
new file mode 100644
index 0000000000..759627b56e
--- /dev/null
+++ b/kotlin/src/main/kotlin/com/baeldung/kotlin/User.kt
@@ -0,0 +1,3 @@
+package com.baeldung.kotlin
+
+data class User(val name: String, val age: Int, val hobbies: List<String>)
diff --git a/kotlin/src/test/kotlin/com/baeldung/kotlin/EqualityTest.kt b/kotlin/src/test/kotlin/com/baeldung/kotlin/EqualityTest.kt
index 7cf2faaf42..6fb6d0a288 100644
--- a/kotlin/src/test/kotlin/com/baeldung/kotlin/EqualityTest.kt
+++ b/kotlin/src/test/kotlin/com/baeldung/kotlin/EqualityTest.kt
@@ -23,4 +23,36 @@ class EqualityTest {
 
         assertTrue(a == b)
     }
+
+    @Test
+    fun givenUser_whenCheckReference_thenEqualReference() {
+        val user = User("John", 30, listOf("Hiking, Chess"))
+        val user2 = User("Sarah", 28, listOf("Shopping, Gymnastics"))
+
+        assertFalse(user === user2)
+    }
+
+    @Test
+    fun givenUser_whenCheckValue_thenStructurallyEqual() {
+        val user = User("John", 30, listOf("Hiking, Chess"))
+        val user2 = User("John", 30, listOf("Hiking, Chess"))
+
+        assertTrue(user == user2)
+    }
+
+    @Test
+    fun givenArray_whenCheckReference_thenEqualReference() {
+        val hobbies = arrayOf("Riding motorcycle, Video games")
+        val hobbies2 = arrayOf("Riding motorcycle, Video games")
+
+        assertFalse(hobbies === hobbies2)
+    }
+
+    @Test
+    fun givenArray_whenCheckContent_thenStructurallyEqual() {
+        val hobbies = arrayOf("Hiking, Chess")
+        val hobbies2 = arrayOf("Hiking, Chess")
+
+        assertTrue(hobbies contentEquals hobbies2)
+    }
 }
\ No newline at end of file