add shallow copy unit test

Author: hangga

core-kotlin-modules/core-kotlin-10/src/test/kotlin/com/baeldung/cloningobject/CloningObjectUnitTest.kt

@@ -149,6 +149,28 @@ class CloningObjectUnitTest {
             .isNotEqualTo("New Employee Address City Name")
     }
 
+    @Test
+    fun `when cloned object with copy() then proves that shallow copy`() {
+        val clonedOrganization = organization.copy()
+
+        modifyOrganization()
+
+        assertThat(clonedOrganization)
+            .isNotSameAs(organization)
+        assertThat(clonedOrganization.headquarters.city)
+            .isEqualTo("New City")
+        assertThat(clonedOrganization.companies.first().name)
+            .isEqualTo("New Company Name")
+        assertThat(clonedOrganization.companies.first().ceo.name)
+            .isEqualTo("New CEO Name")
+        assertThat(clonedOrganization.companies.first().ceo.address.city)
+            .isEqualTo("New CEO Address City Name")
+        assertThat(clonedOrganization.companies.first().employees.first().name)
+            .isEqualTo("New Employee Name")
+        assertThat(clonedOrganization.companies.first().employees.first().address.city)
+            .isEqualTo("New Employee Address City Name")
+    }
+
     @Test
     fun `when cloned object with copy() then proves that deep copy`() {