Add test for input data as assoc array

Author: neomerx

tests/Encoder/EncodeSimpleObjectsTest.php

@@ -158,6 +158,43 @@ public function testEncodeObjectWithAttributesOnlyInArray()
         $this->assertEquals($expected, $actual);
     }
 
+    /**
+     * Test encode simple object with attributes only associative array.
+     */
+    public function testEncodeObjectWithAttributesOnlyInAssocArray()
+    {
+        $author   = Author::instance(9, 'Dan', 'Gebhardt');
+        $endcoder = Encoder::instance([
+            Author::class => function ($factory, $container) {
+                $schema = new AuthorSchema($factory, $container);
+                $schema->linkRemove(Author::LINK_COMMENTS);
+                return $schema;
+            }
+        ], $this->encoderOptions);
+
+        $actual = $endcoder->encode(['key_doesnt_matter' => $author]);
+
+        $expected = <<<EOL
+        {
+            "data" : [{
+                "type"       : "people",
+                "id"         : "9",
+                "attributes" : {
+                    "first_name" : "Dan",
+                    "last_name"  : "Gebhardt"
+                },
+                "links" : {
+                    "self" : "http://example.com/people/9"
+                }
+            }]
+        }
+EOL;
+        // remove formatting from 'expected'
+        $expected = json_encode(json_decode($expected));
+
+        $this->assertEquals($expected, $actual);
+    }
+
     /**
      * Test encode simple object in pretty format.
      */