Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/guzzlehttp/promises/tests/FulfilledPromiseTest.php

@@ -0,0 +1,108 @@
+<?php
+namespace GuzzleHttp\Tests\Promise;
+
+use GuzzleHttp\Promise\Promise;
+use GuzzleHttp\Promise\FulfilledPromise;
+
+/**
+ * @covers GuzzleHttp\Promise\FulfilledPromise
+ */
+class FulfilledPromiseTest extends \PHPUnit_Framework_TestCase
+{
+    public function testReturnsValueWhenWaitedUpon()
+    {
+        $p = new FulfilledPromise('foo');
+        $this->assertEquals('fulfilled', $p->getState());
+        $this->assertEquals('foo', $p->wait(true));
+    }
+
+    public function testCannotCancel()
+    {
+        $p = new FulfilledPromise('foo');
+        $this->assertEquals('fulfilled', $p->getState());
+        $p->cancel();
+        $this->assertEquals('foo', $p->wait());
+    }
+
+    /**
+     * @expectedException \LogicException
+     * @exepctedExceptionMessage Cannot resolve a fulfilled promise
+     */
+    public function testCannotResolve()
+    {
+        $p = new FulfilledPromise('foo');
+        $p->resolve('bar');
+    }
+
+    /**
+     * @expectedException \LogicException
+     * @exepctedExceptionMessage Cannot reject a fulfilled promise
+     */
+    public function testCannotReject()
+    {
+        $p = new FulfilledPromise('foo');
+        $p->reject('bar');
+    }
+
+    public function testCanResolveWithSameValue()
+    {
+        $p = new FulfilledPromise('foo');
+        $p->resolve('foo');
+    }
+
+    /**
+     * @expectedException \InvalidArgumentException
+     */
+    public function testCannotResolveWithPromise()
+    {
+        new FulfilledPromise(new Promise());
+    }
+
+    public function testReturnsSelfWhenNoOnFulfilled()
+    {
+        $p = new FulfilledPromise('a');
+        $this->assertSame($p, $p->then());
+    }
+
+    public function testAsynchronouslyInvokesOnFulfilled()
+    {
+        $p = new FulfilledPromise('a');
+        $r = null;
+        $f = function ($d) use (&$r) { $r = $d; };
+        $p2 = $p->then($f);
+        $this->assertNotSame($p, $p2);
+        $this->assertNull($r);
+        \GuzzleHttp\Promise\queue()->run();
+        $this->assertEquals('a', $r);
+    }
+
+    public function testReturnsNewRejectedWhenOnFulfilledFails()
+    {
+        $p = new FulfilledPromise('a');
+        $f = function () { throw new \Exception('b'); };
+        $p2 = $p->then($f);
+        $this->assertNotSame($p, $p2);
+        try {
+            $p2->wait();
+            $this->fail();
+        } catch (\Exception $e) {
+            $this->assertEquals('b', $e->getMessage());
+        }
+    }
+
+    public function testOtherwiseIsSugarForRejections()
+    {
+        $c = null;
+        $p = new FulfilledPromise('foo');
+        $p->otherwise(function ($v) use (&$c) { $c = $v; });
+        $this->assertNull($c);
+    }
+
+    public function testDoesNotTryToFulfillTwiceDuringTrampoline()
+    {
+        $fp = new FulfilledPromise('a');
+        $t1 = $fp->then(function ($v) { return $v . ' b'; });
+        $t1->resolve('why!');
+        $this->assertEquals('why!', $t1->wait());
+    }
+}