fix error build tests error

Author: inhere

.travis.yml

@@ -13,16 +13,16 @@ php:
 
 install:
   - |
-    wget -O bin/php-cs-fixer "https://cs.symfony.com/download/php-cs-fixer-v2.phar"
-    chmod +x bin/php-cs-fixer
+    wget -O vendor/bin/php-cs-fixer "https://cs.symfony.com/download/php-cs-fixer-v2.phar"
+    chmod +x vendor/bin/php-cs-fixer
 
 before_script:
   - php -m
   - composer require php-coveralls/php-coveralls:^2.1.0
 
 script:
   # check code style
-  # - composer check-cs
+  - composer check-cs
   # - phpunit --coverage-clover clover.xml
   - php vendor/bin/phpunit --coverage-clover clover.xml
 

composer.json

@@ -35,7 +35,7 @@
     }
   },
   "scripts": {
-    "check-cs": "./bin/php-cs-fixer fix --dry-run --diff --diff-format=udiff",
-    "cs-fix": "./bin/php-cs-fixer fix"
+    "check-cs": "./vendor/bin/php-cs-fixer fix --dry-run --diff --diff-format=udiff",
+    "cs-fix": "./vendor/bin/php-cs-fixer fix"
   }
 }

docs/Valid.php

@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 namespace Inhere\Validate;