#KT-3533 Fixed - not to null in encoding name parameter in String, Bytes, and File.

libraries/stdlib/test/StringJVMTest.kt

@@ -288,4 +288,11 @@ class StringJVMTest {
             assertEquals(example.trim(), example.trimLeading().trimTrailing())
         }
     }
+
+    test fun toByteArrayEncodings() {
+        val s = "hello"
+        val defaultCharset = java.nio.charset.Charset.defaultCharset()!!
+        assertEquals(s.toByteArray().toString(), s.toByteArray(defaultCharset).toString())
+        assertEquals(s.toByteArray().toString(), s.toByteArray(defaultCharset.name()).toString())
+    }
 }