Add testbench and travis

.gitignore

@@ -1,5 +1,6 @@
 /vendor/
 composer.lock
 .php_cs.cache
+.phpunit.result.cache
 *.swp
 tags

.travis.yml

@@ -0,0 +1,56 @@
+cache:
+  directories:
+    - $HOME/.composer/cache
+
+language: php
+
+env:
+  global:
+    - COVERAGE=0
+
+matrix:
+  include:
+    - php: 7.0
+      env: LARAVEL='5.5.*' TESTBENCH='3.5.*'
+    - php: 7.1
+      env: LARAVEL='5.5.*' TESTBENCH='3.5.*'
+    - php: 7.1
+      env: LARAVEL='5.6.*' TESTBENCH='3.6.*'
+    - php: 7.1
+      env: LARAVEL='5.7.*' TESTBENCH='3.7.*'
+    - php: 7.1
+      env: LARAVEL='5.8.*' TESTBENCH='3.8.*'
+    - php: 7.2
+      env: LARAVEL='5.5.*' TESTBENCH='3.5.*'
+    - php: 7.2
+      env: LARAVEL='5.6.*' TESTBENCH='3.6.*'
+    - php: 7.2
+      env: LARAVEL='5.7.*' TESTBENCH='3.7.*'
+    - php: 7.2
+      env: LARAVEL='5.8.*' TESTBENCH='3.8.*'
+    - php: 7.2
+      env: LARAVEL='6.*' TESTBENCH='4.*'
+    - php: 7.3
+      env: LARAVEL='5.5.*' TESTBENCH='3.5.*'
+    - php: 7.3
+      env: LARAVEL='5.6.*' TESTBENCH='3.6.*'
+    - php: 7.3
+      env: LARAVEL='5.7.*' TESTBENCH='3.7.*'
+    - php: 7.3
+      env: LARAVEL='5.8.*' TESTBENCH='3.8.*'
+    - php: 7.3
+      env: LARAVEL='6.*' TESTBENCH='4.*'
+  fast_finish: true
+
+before_script:
+    - composer config discard-changes true
+
+before_install:
+  - travis_retry composer self-update
+  - travis_retry composer require "laravel/framework:${LARAVEL}" "orchestra/testbench:${TESTBENCH}" --no-interaction --no-update
+
+install:
+  - travis_retry composer install --prefer-dist --no-interaction --no-suggest
+
+script:
+  - vendor/bin/phpunit

composer.json

@@ -14,8 +14,8 @@
         "guzzlehttp/guzzle": "^6.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^7.0",
-        "psr/log": "^1.0"
+        "psr/log": "^1.0",
+        "orchestra/testbench": "^4.0"
     },
     "autoload": {
         "psr-4": {

tests/EmailRuleTest.php

@@ -5,7 +5,7 @@
 use GuzzleHttp\Handler\MockHandler;
 use GuzzleHttp\Psr7\Response;
 use Kouz\LaravelMailgunValidation\EmailRule;
-use PHPUnit\Framework\TestCase;
+use Orchestra\Testbench\TestCase;
 use Psr\Log\LoggerInterface;
 
 class EmailRuleTest extends TestCase
@@ -25,6 +25,11 @@ class EmailRuleTest extends TestCase
         'reason' => null,
     ];
 
+    protected function getPackageProviders($app)
+    {
+        return ['Kouz\LaravelMailgunValidation\ServiceProvider'];
+    }
+
     /**
      * @test
      */