Set bytes to position for compliance with abstract-encoding

lib/decode.js

@@ -78,9 +78,10 @@ function decode (data, start, end, encoding) {
     ? text2arr(data)
     : new Uint8Array(data.slice(start, end))
 
-  decode.bytes = decode.data.length
+  const decodeResult = decode.next()
+  decode.bytes = decode.position
 
-  return decode.next()
+  return decodeResult
 }
 
 decode.bytes = 0

test/decode.length.test.js

@@ -0,0 +1,24 @@
+import test from 'tape'
+import bencode from '../index.js'
+
+test('bencode#decode#bytes', function (t) {
+  t.test('bytes should be set to correct value for two separate bencoded elements', function (t) {
+    t.plan(2)
+    t.equal(bencode.decode('i123ei123e'), 123)
+    t.equal(bencode.decode.bytes, 5)
+  })
+  t.test('bytes should be set to correct value when followed by random junk data', function (t) {
+    t.plan(1)
+    const someData = {
+      string: 'Hello World',
+      integer: 12345,
+      dict: {
+        key: 'This is a string within a dictionary'
+      },
+      list: [1, 2, 3, 4, 'string', 5, {}]
+    }
+    const result = bencode.encode(someData)
+    bencode.decode(Buffer.from(result).toString() + 'RANDOM_JUNK_DATA')
+    t.equal(bencode.decode.bytes, result.length)
+  })
+})