KotlinFilterExtension.kt

import org.junit.Test
import org.junit.Assert.*

class KotlinStandardLibraryTests{
    @Test
    fun testFilterExtensionFunction(){
    val listOfLinks = listOf(
            "www.codingstoic.com",
            "www.codingblast.com",
            "www.kotlinlang.org",
            "www.android.com"
    )
        
    val dotComLinks = listOfLinks.filter { it.contains(".com") }
    assertEquals(3, dotComLinks.size)
    }
}