Updated the files.

my-app/node_modules/encoding/test/test.js

@@ -0,0 +1,49 @@
+'use strict';
+
+var encoding = require('../lib/encoding');
+
+exports['General tests'] = {
+    'From UTF-8 to Latin_1': function (test) {
+        var input = 'ÕÄÖÜ',
+            expected = Buffer.from([0xd5, 0xc4, 0xd6, 0xdc]);
+        test.deepEqual(encoding.convert(input, 'latin1'), expected);
+        test.done();
+    },
+
+    'From Latin_1 to UTF-8': function (test) {
+        var input = Buffer.from([0xd5, 0xc4, 0xd6, 0xdc]),
+            expected = 'ÕÄÖÜ';
+        test.deepEqual(encoding.convert(input, 'utf-8', 'latin1').toString(), expected);
+        test.done();
+    },
+
+    'From UTF-8 to UTF-8': function (test) {
+        var input = 'ÕÄÖÜ',
+            expected = Buffer.from('ÕÄÖÜ');
+        test.deepEqual(encoding.convert(input, 'utf-8', 'utf-8'), expected);
+        test.done();
+    },
+
+    'From Latin_13 to Latin_15': function (test) {
+        var input = Buffer.from([0xd5, 0xc4, 0xd6, 0xdc, 0xd0]),
+            expected = Buffer.from([0xd5, 0xc4, 0xd6, 0xdc, 0xa6]);
+        test.deepEqual(encoding.convert(input, 'latin_15', 'latin13'), expected);
+        test.done();
+    }
+
+    /*
+    // ISO-2022-JP is not supported by iconv-lite
+    "From ISO-2022-JP to UTF-8 with Iconv": function (test) {
+        var input = Buffer.from(
+            "GyRCM1g5OzU7PVEwdzgmPSQ4IUYkMnFKczlwGyhC",
+            "base64"
+        ),
+        expected = Buffer.from(
+            "5a2m5qCh5oqA6KGT5ZOh56CU5L+u5qSc6KiO5Lya5aCx5ZGK",
+            "base64"
+        );
+        test.deepEqual(encoding.convert(input, "utf-8", "ISO-2022-JP"), expected);
+        test.done();
+    },
+    */
+};