tests: loop faucet until an unspent is given

package.json

@@ -72,7 +72,7 @@
     "wif": "^1.1.0"
   },
   "devDependencies": {
-    "async": "^0.9.0",
+    "async": "^1.5.0",
     "blanket": "^1.1.0",
     "browserify": "^10.0.0",
     "bs58": "^2.0.1",

test/integration/_blockchain.js

@@ -1,3 +1,4 @@
+var async = require('async')
 var Blockchain = require('cb-http-client')
 var httpify = require('httpify')
 
@@ -5,7 +6,13 @@ var BLOCKTRAIL_API_KEY = process.env.BLOCKTRAIL_API_KEY || 'c0bd8155c66e3fb148bb
 
 var mainnet = new Blockchain('https://api.blocktrail.com/cb/v0.2.1/BTC', { api_key: BLOCKTRAIL_API_KEY })
 var testnet = new Blockchain('https://api.blocktrail.com/cb/v0.2.1/tBTC', { api_key: BLOCKTRAIL_API_KEY })
-testnet.faucet = function faucet (address, amount, callback) {
+
+testnet.faucet = function faucet (address, amount, done) {
+  var unspents = []
+
+  async.whilst(
+    function condition () { return unspents.length === 0 },
+    function f (callback) {
       httpify({
         method: 'POST',
         url: 'https://api.blocktrail.com/v1/tBTC/faucet/withdrawl?api_key=' + BLOCKTRAIL_API_KEY,
@@ -14,7 +21,27 @@ testnet.faucet = function faucet (address, amount, callback) {
           address: address,
           amount: amount
         })
-  }, callback)
+      }, function (err) {
+        if (err) return callback(err)
+
+        testnet.addresses.unspents(address, function (err, result) {
+          if (err) return callback(err)
+
+          // filter small unspents
+          unspents = result.filter(function (unspent) {
+            return unspent.value > 1e3
+          })
+
+          callback()
+        })
+      })
+    },
+    function (err) {
+      if (err) return done(err)
+
+      done(null, unspents)
+    }
+  )
 }
 
 module.exports = {

test/integration/advanced.js

@@ -22,27 +22,17 @@ describe('bitcoinjs-lib (advanced)', function () {
   })
 
   it('can create an OP_RETURN transaction', function (done) {
-    this.timeout(20000)
+    this.timeout(30000)
 
     var network = bitcoin.networks.testnet
     var keyPair = bitcoin.ECPair.makeRandom({ network: network })
     var address = keyPair.getAddress()
 
-    blockchain.t.faucet(address, 2e4, function (err) {
+    blockchain.t.faucet(address, 2e4, function (err, unspents) {
       if (err) return done(err)
 
-      blockchain.t.addresses.unspents(address, function (err, unspents) {
-        if (err) return done(err)
-
-        // filter small unspents
-        unspents = unspents.filter(function (unspent) {
-          return unspent.value > 1e4
-        })
-
       // use the oldest unspent
       var unspent = unspents.pop()
-        if (!unspent) throw new Error('Faucet didn\'t provide an unspent')
-
       var tx = new bitcoin.TransactionBuilder(network)
       var data = new Buffer('bitcoinjs-lib')
       var dataScript = bitcoin.script.nullDataOutput(data)
@@ -73,4 +63,3 @@ describe('bitcoinjs-lib (advanced)', function () {
     })
   })
 })
-})

test/integration/multisig.js

@@ -37,23 +37,12 @@ describe('bitcoinjs-lib (multisig)', function () {
     var address = bitcoin.address.fromOutputScript(scriptPubKey, bitcoin.networks.testnet)
 
     // attempt to send funds to the source address
-    blockchain.t.faucet(address, 2e4, function (err) {
+    blockchain.t.faucet(address, 2e4, function (err, unspents) {
       if (err) return done(err)
 
-      // get latest unspents from the address
-      blockchain.t.addresses.unspents(address, function (err, unspents) {
-        if (err) return done(err)
-
-        // filter small unspents
-        unspents = unspents.filter(function (unspent) {
-          return unspent.value > 1e4
-        })
-
       // use the oldest unspent
       var unspent = unspents.pop()
 
-        if (!unspent) throw new Error('Faucet didn\'t provide an unspent')
-
       // make a random destination address
       var targetAddress = bitcoin.ECPair.makeRandom({
         network: bitcoin.networks.testnet
@@ -88,4 +77,3 @@ describe('bitcoinjs-lib (multisig)', function () {
     })
   })
 })
-})