Fix array and iterable support.

.gitignore

@@ -1 +1,4 @@
 /.idea
+/vendor
+.phpunit.result.cache
+composer.lock

src/Paginator/Paginator.php

@@ -24,7 +24,11 @@ public function __construct(iterable $data, int $count, int $currentPage = 1, in
 
     public function getIterator(): Traversable
     {
-        return new \ArrayIterator($this->data);
+        if (is_array($this->data)) {
+            return new \ArrayIterator($this->data);
+        } else {
+            return new \IteratorIterator($this->data);
+        }
     }
 
     public function count(): int

test/Basic/CollectionNormalizerTest.php

@@ -15,12 +15,31 @@
 class CollectionNormalizerTest extends TestCase
 {
 
-    public function testNormalize()
+
+    public function iterableData()
     {
-        $data = new Paginator(
+        $iter = (function() {
+            yield (['id' => 1, 'name' => 'aaa']);
+        })();
+        return [
             [
-                ['id' => 1, 'name' => 'aaa'],
+                $iter,
             ],
+            [
+                [
+                    ['id' => 1, 'name' => 'aaa'],
+                ]
+            ]
+        ];
+    }
+
+    /**
+     * @dataProvider iterableData
+     */
+    public function testNormalize(iterable $iter)
+    {
+        $data = new Paginator(
+            $iter,
             100, 1, 10
         );