implement optimizations

src/commonTest/kotlin/com/infendro/bytes/ubytearray/String.kt

@@ -0,0 +1,21 @@
+package com.infendro.bytes.ubytearray
+
+import kotlin.test.Test
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+
+class `UByteArray String Test` {
+    @Test
+    fun encodeToUByteArray() {
+        val expected = ubyteArrayOf(0x50U, 0x41U, 0x53U, 0x53U, 0x57U, 0x4FU, 0x52U, 0x44U)
+        val actual = "PASSWORD".encodeToUByteArray()
+        assertContentEquals(expected, actual)
+    }
+
+    @Test
+    fun decodeToString() {
+        val expected = "PASSWORD"
+        val actual = ubyteArrayOf(0x50U, 0x41U, 0x53U, 0x53U, 0x57U, 0x4FU, 0x52U, 0x44U).decodeToString()
+        assertEquals(expected, actual)
+    }
+}