tests: TypedIterator - Add test.

loophp · Jan 15, 2022 · b9aab65 · b9aab65
1 parent cbc6c20
commit b9aab65
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/tests/unit/Iterator/TypedIteratorTest.php b/tests/unit/Iterator/TypedIteratorTest.php
@@ -35,6 +35,18 @@ final class TypedIteratorTest extends TestCase
 
     private const MAP_DATA = ['foo' => 1, 'bar' => 2];
 
+    public function testWithNullValues(): void
+    {
+        $data = ['a' => null, 'b' => null];
+
+        $iterator = new TypedIterator(new ArrayIterator($data));
+
+        self::assertIdenticalIterable(
+            $data,
+            $iterator
+        );
+    }
+
     public function testAllowsArrayOfAnyType(): void
     {
         $data = [self::MAP_DATA, self::LIST_DATA];