Fixed adding or subtracting licenses by 0

Author: tylercd100

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 All notable changes to `laravel-licenser` will be documented in this file.
 
+### 1.0.2
+- Fixed adding or subtracting licenses by 0
+
 ### 1.0.1
 - Added publish option for older versions of Laravel.
 - Fixed setting a new value for the license amount.

src/License.php

@@ -139,7 +139,7 @@ abstract protected function subtracted();
      */
     final public function add($quantity = 1)
     {
-        if (!is_int($quantity) || $quantity <= 0) {
+        if (!is_int($quantity) || $quantity < 0) {
             throw new LicenseException("Quantity must be a positive integer.");
         }
 
@@ -161,7 +161,7 @@ final public function add($quantity = 1)
      */
     final public function sub($quantity = 1)
     {
-        if (!is_int($quantity) || $quantity <= 0) {
+        if (!is_int($quantity) || $quantity < 0) {
             throw new LicenseException("Quantity must be a positive integer.");
         }
 
@@ -187,7 +187,7 @@ final public function sub($quantity = 1)
      */
     final public function set($quantity)
     {
-        if (!is_int($quantity) || $quantity <= 0) {
+        if (!is_int($quantity) || $quantity < 0) {
             throw new LicenseException("Quantity must be a positive integer.");
         }