make the returned readable stream async

index.js

@@ -15,7 +15,10 @@ function StreamArray(list) {
 StreamArray.prototype = Object.create(Readable.prototype, {constructor: {value: StreamArray}});
 
 StreamArray.prototype._read = function(size) {
-    this.push(this._i < this._l ? this._list[this._i++] : null);
+    var self = this;
+    process.nextTick(function() {
+        self.push(self._i < self._l ? self._list[self._i++] : null);
+    });
 };
 
 module.exports = function(list) {

test/5.js

@@ -0,0 +1,27 @@
+var test = require('tape')
+    , streamify = require('..')
+    , concat = require('concat-stream')
+;
+
+test('async, non-blocking', function(t) {
+    var s = streamify(['1', '2', '3']);
+
+    var i = 0;
+    s.on('data', function(item) {
+      i++;
+    });
+
+    process.nextTick(function() {
+      t.equal(0, i, 'should emit the first item after this code');
+      process.nextTick(function() {
+        t.equal(1, i, 'should emit the second item after this code');
+        process.nextTick(function() {
+          t.equal(2, i, 'should emit the third item after this code');
+          process.nextTick(function() {
+            t.equal(3, i, 'should have emitted all three items in the fourth tick');
+            t.end();
+          });
+        });
+      });
+    });
+});