Merge pull request #77 from sanmai/pr/v3.x/countZero

Assert that count is zero for an empty pipeline

tests/StandardTest.php

@@ -34,6 +34,17 @@ public function testEmpty()
 
         $pipeline = new Standard();
         $this->assertSame([], $pipeline->toArray());
+
+        $this->assertSame(0, iterator_count(new Standard()));
+    }
+
+    public function testEmptyPHPUnitWise()
+    {
+        try {
+            $this->assertCount(0, new Standard());
+        } catch (\BadMethodCallException $e) {
+            $this->markTestIncomplete($e->getMessage());
+        }
     }
 
     public function testSingle()