diff --git a/core-kotlin-modules/core-kotlin-advanced-4/src/test/kotlin/com/baeldung/resolvePrimaryConstructorCallExpectedIssue/resolvePrimaryConstructorCallExpectedIssueUnitTest.kt b/core-kotlin-modules/core-kotlin-advanced-4/src/test/kotlin/com/baeldung/resolvePrimaryConstructorCallExpectedIssue/resolvePrimaryConstructorCallExpectedIssueUnitTest.kt
new file mode 100644
index 000000000..6fbeebe02
--- /dev/null
+++ b/core-kotlin-modules/core-kotlin-advanced-4/src/test/kotlin/com/baeldung/resolvePrimaryConstructorCallExpectedIssue/resolvePrimaryConstructorCallExpectedIssueUnitTest.kt
@@ -0,0 +1,48 @@
+package com.baeldung.resolvePrimaryConstructorCallExpectedIssue
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Test
+
+class resolvePrimaryConstructorCallExpectedIssueUnitTest {
+
+    @Test
+    fun `correctly resolve compile error by properly defining constructors`() {
+        val student = Student("Martial", 15)
+
+        assertEquals("Martial", student.name)
+        assertEquals(15, student.age)
+    }
+
+    @Test
+    fun `correctly resolve compile error by properly using the secondary constructor`() {
+        val dog = Dog("Max")
+        assertEquals("Max", dog.species)
+    }
+
+    @Test
+    fun `correctly resolve compile error by properly using default parameters`() {
+        val car1 = Car("Toyota", "Corolla")
+
+        assertEquals("Toyota", car1.make)
+        assertEquals("Corolla", car1.model)
+
+    }
+}
+
+class Student(var name: String) {
+    var age: Int = 14
+
+    constructor(name: String, age: Int) : this(name) {
+        this.age = age
+    }
+
+    fun printMsg() {
+        println("Name is $name. Age is $age.")
+    }
+}
+
+open class Animal(val species: String)
+
+class Dog(species: String) : Animal(species)
+
+class Car(val make: String, val model: String = "Unknown")