fix(bitswap.unwant) Parse CID from arg

CID parsing is done just like block.add does
This also removes the local tests and moves reliance on testing to the
tests that are being added to interface-ipfs-core

Author: wraithgar

src/bitswap/unwant.js

@@ -1,13 +1,33 @@
 'use strict'
 
 const promisify = require('promisify-es6')
+const CID = require('cids')
 
 module.exports = (send) => {
   return promisify((args, opts, callback) => {
     if (typeof (opts) === 'function') {
       callback = opts
       opts = {}
     }
+
+    // Mirrors block.get's parsing of the CID
+    let cid
+    try {
+      if (CID.isCID(args)) {
+        cid = args
+        args = cid.toBaseEncodedString()
+      } else if (Buffer.isBuffer(args)) {
+        cid = new CID(args)
+        args = cid.toBaseEncodedString()
+      } else if (typeof args === 'string') {
+        cid = new CID(args)
+      } else {
+        return callback(new Error('invalid argument'))
+      }
+    } catch (err) {
+      return callback(err)
+    }
+
     send({
       path: 'bitswap/unwant',
       args: args,

test/bitswap.spec.js

@@ -0,0 +1,32 @@
+/* eslint-env mocha */
+
+'use strict'
+
+const test = require('interface-ipfs-core')
+const parallel = require('async/parallel')
+
+const IPFSApi = require('../../src')
+const f = require('../utils/factory')
+
+const nodes = []
+const common = {
+  setup: function (callback) {
+    callback(null, {
+      spawnNode: (cb) => {
+        f.spawn({ initOptions: { bits: 1024 } }, (err, _ipfsd) => {
+          if (err) {
+            return cb(err)
+          }
+
+          nodes.push(_ipfsd)
+          cb(null, IPFSApi(_ipfsd.apiAddr))
+        })
+      }
+    })
+  },
+  teardown: function (callback) {
+    parallel(nodes.map((node) => (cb) => node.stop(cb)), callback)
+  }
+}
+
+test.bitswap(common)