Use newer Promise API instead of Promise helpers

Author: clue

composer.json

@@ -17,7 +17,7 @@
         "php": ">=5.3",
         "react/event-loop": "~0.3.0|~0.4.0",
         "clue/buzz-react": "~0.3.0",
-        "react/promise": "~1.0|~2.0",
+        "react/promise": "~2.0|~1.1",
         "clue/json-stream": "~0.1.0"
     },
     "require-dev": {

tests/Io/StreamingParserTest.php

@@ -4,6 +4,7 @@
 use React\Promise\Deferred;
 use React\Stream\ReadableStream;
 use React\Promise\CancellablePromiseInterface;
+use React\Promise;
 
 class StreamingParserTest extends TestCase
 {
@@ -16,7 +17,7 @@ public function setUp()
 
     public function testJsonPassingRejectedPromiseResolvesWithClosedStream()
     {
-        $stream = $this->parser->parseJsonStream($this->createPromiseRejected());
+        $stream = $this->parser->parseJsonStream(Promise\reject());
 
         $this->assertInstanceOf('React\Stream\ReadableStreamInterface', $stream);
         $this->assertFalse($stream->isReadable());
@@ -58,7 +59,7 @@ public function testJsonResolvingPromiseWillEmitCloseEvent()
 
     public function testPlainPassingRejectedPromiseResolvesWithClosedStream()
     {
-        $stream = $this->parser->parsePlainStream($this->createPromiseRejected());
+        $stream = $this->parser->parsePlainStream(Promise\reject());
 
         $this->assertInstanceOf('React\Stream\ReadableStreamInterface', $stream);
         $this->assertFalse($stream->isReadable());

tests/bootstrap.php

@@ -106,22 +106,6 @@ protected function waitFor(PromiseInterface $promise, LoopInterface $loop)
 
         return $resolved;
     }
-
-    protected function createPromiseResolved($value = null)
-    {
-        $deferred = new Deferred();
-        $deferred->resolve($value);
-
-        return $deferred->promise();
-    }
-
-    protected function createPromiseRejected($value = null)
-    {
-        $deferred = new Deferred();
-        $deferred->reject($value);
-
-        return $deferred->promise();
-    }
 }
 
 class CallableStub