fix unapply

dennis84 · Sep 11, 2015 · 1f95e10 · 1f95e10
1 parent d772c9b
commit 1f95e10
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Showing 2 changed files with 29 additions and 0 deletions.
diff --git a/src/Mapping.php b/src/Mapping.php
@@ -147,6 +147,10 @@ public function unapply($input)
                     $result[$name] = $child->unapply($input[$name]);
                 }
             }
+
+            if (0 === count($result)) {
+                $result = null;
+            }
         }
 
         $data->setResult($result);

diff --git a/tests/UnapplyTest.php b/tests/UnapplyTest.php
@@ -182,4 +182,29 @@ public function testG()
         $this->assertSame('dennis', $result['username']);
         $this->assertNull($result['password']);
     }
+
+    public function testH()
+    {
+        $factory = new Factory;
+        $mapping = $factory->mapping([
+            'username' => $factory->mapping(),
+            'password' => $factory->mapping(),
+            'address'  => $factory->mapping([
+                'city'   => $factory->mapping(),
+                'street' => $factory->mapping(),
+            ]),
+        ]);
+
+        $result = $mapping->unapply([
+            'username' => 'dennis',
+            'password' => 'passwd',
+            'address' => null,
+        ]);
+
+        $this->assertSame([
+            'username' => 'dennis',
+            'password' => 'passwd',
+            'address' => null,
+        ], $result);
+    }
 }