Add OK or Successful HTTP codes 200-206 to HttpResponse::isOK(). Fixes #3531

lib/Cake/Network/Http/HttpResponse.php

@@ -116,12 +116,12 @@ class HttpResponse implements ArrayAccess {
 	}
 
 /**
- * If return is 200 (OK)
+ * If return is a valid 2xx (OK or Successful)
  *
  * @return boolean
  */
 	public function isOk() {
-		return $this->code == 200;
+		return in_array($this->code, array(200, 201, 202, 203, 204, 205, 206));
 	}
 
 /**

lib/Cake/Test/Case/Network/Http/HttpResponseTest.php

@@ -157,12 +157,36 @@ class HttpResponseTest extends CakeTestCase {
 		$this->assertFalse($this->HttpResponse->isOk());
 		$this->HttpResponse->code = -1;
 		$this->assertFalse($this->HttpResponse->isOk());
-		$this->HttpResponse->code = 201;
-		$this->assertFalse($this->HttpResponse->isOk());
 		$this->HttpResponse->code = 'what?';
 		$this->assertFalse($this->HttpResponse->isOk());
 		$this->HttpResponse->code = 200;
 		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 201;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 202;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 203;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 204;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 205;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 206;
+		$this->assertTrue($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 207;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 208;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 209;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 210;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 226;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 288;
+		$this->assertFalse($this->HttpResponse->isOk());
+		$this->HttpResponse->code = 301;
+		$this->assertFalse($this->HttpResponse->isOk());
 	}
 
 /**