BAEL-2652 Add read resource file cases

core-kotlin/src/main/kotlin/com/baeldung/filesystem/FileReader.kt

@@ -17,4 +17,8 @@ class FileReader {
       File(fileName).inputStream().readBytes().toString(Charsets.UTF_8)
 
     fun readFileDirectlyAsText(fileName: String): String = File(fileName).readText(Charsets.UTF_8)
+
+    fun readFileUsingGetResource(fileName: String) = this::class.java.getResource(fileName).readText(Charsets.UTF_8)
+
+    fun readFileAsLinesUsingGetResourceAsStream(fileName: String) = this::class.java.getResourceAsStream(fileName).bufferedReader().readLines()
 }

core-kotlin/src/test/kotlin/com/baeldung/filesystem/FileReaderTest.kt

@@ -48,4 +48,20 @@ internal class FileReaderTest {
 
         assertTrue { text.contains("Hello to Kotlin") }
     }
+
+    @Test
+    fun whenReadFileAsTextUsingGetResource_thenCorrect() {
+        val text = fileReader.readFileUsingGetResource("/Kotlin.in")
+
+        assertTrue { text.contains("1. Concise") }
+    }
+
+    @Test
+    fun whenReadFileUsingGetResourceAsStream_thenCorrect() {
+        val lines = fileReader.readFileAsLinesUsingGetResourceAsStream("/Kotlin.in")
+
+        assertTrue { lines.contains("3. Interoperable") }
+    }
+
+
 }