Add support for ReaderFactory

Author: Florian Eckerstorfer

src/JsonFileReader.php

@@ -11,6 +11,7 @@
 
 namespace Plum\PlumJson;
 
+use ArrayIterator;
 use Braincrafted\Json\Json;
 use Plum\Plum\Reader\ReaderInterface;
 
@@ -38,11 +39,11 @@ public function __construct($fileName)
     }
 
     /**
-     * @return \ArrayIterator
+     * @return ArrayIterator
      */
     public function getIterator()
     {
-        return new \ArrayIterator($this->getJson());
+        return new ArrayIterator($this->getJson());
     }
 
     /**
@@ -66,4 +67,14 @@ protected function getJson()
 
         return $this->data;
     }
+
+    /**
+     * @param mixed $input
+     *
+     * @return bool
+     */
+    public static function accepts($input)
+    {
+        return is_string($input) && preg_match('/\.json$/', $input);
+    }
 }

src/JsonReader.php

@@ -11,6 +11,7 @@
 
 namespace Plum\PlumJson;
 
+use ArrayIterator;
 use Braincrafted\Json\Json;
 use Plum\Plum\Reader\ReaderInterface;
 
@@ -38,11 +39,11 @@ public function __construct($json)
     }
 
     /**
-     * @return \ArrayIterator
+     * @return ArrayIterator
      */
     public function getIterator()
     {
-        return new \ArrayIterator($this->getJson());
+        return new ArrayIterator($this->getJson());
     }
 
     /**
@@ -66,4 +67,14 @@ protected function getJson()
 
         return $this->data;
     }
+
+    /**
+     * @param mixed $input
+     *
+     * @return bool
+     */
+    public static function accepts($input)
+    {
+        return is_array($input);
+    }
 }

tests/JsonFileReaderTest.php

@@ -55,4 +55,23 @@ public function countReturnsNumberOfItemsInJsonFile()
 
         $this->assertEquals(1, $reader->count());
     }
+
+    /**
+     * @test
+     * @covers Plum\PlumJson\JsonFileReader::accepts()
+     */
+    public function acceptsReturnsTrueIfInputIsJsonFile()
+    {
+        $this->assertTrue(JsonFileReader::accepts('foo.json'));
+    }
+
+    /**
+     * @test
+     * @covers Plum\PlumJson\JsonFileReader::accepts()
+     */
+    public function acceptsReturnsFalseIfInputIsNotJsonFile()
+    {
+        $this->assertFalse(JsonFileReader::accepts('foo.csv'));
+        $this->assertFalse(JsonFileReader::accepts([]));
+    }
 }

tests/JsonReaderTest.php

@@ -45,4 +45,22 @@ public function countReturnsNumberOfItemsInJsonFile()
 
         $this->assertEquals(1, $reader->count());
     }
+
+    /**
+     * @test
+     * @covers Plum\PlumJson\JsonReader::accepts()
+     */
+    public function acceptsReturnsTrueIfInputIsArray()
+    {
+        $this->assertTrue(JsonReader::accepts(['foo']));
+    }
+
+    /**
+     * @test
+     * @covers Plum\PlumJson\JsonReader::accepts()
+     */
+    public function acceptsReturnsFalseIfInputIsNotArray()
+    {
+        $this->assertFalse(JsonReader::accepts('foo'));
+    }
 }