Laravel 5.8 Support (#22)

* Update composer.json

* fix test

* fix test

.travis.yml

@@ -3,6 +3,7 @@ language: php
 php:
   - 7.1
   - 7.2
+  - 7.3
 
 env:
   matrix:

composer.json

@@ -19,19 +19,20 @@
     ],
     "require": {
         "php": ">=7.1.2",
+        "ext-json": "*",
         "guzzlehttp/guzzle": "~6.0",
-        "illuminate/notifications": "5.6.*|5.7.*",
-        "illuminate/support": "5.6.*|5.7.*",
-        "illuminate/queue": "5.6.*|5.7.*",
-        "illuminate/console": "5.6.*|5.7.*",
+        "illuminate/notifications": "^5.6",
+        "illuminate/support": "^5.6",
+        "illuminate/queue": "^5.6",
+        "illuminate/console": "^5.6",
         "textalk/websocket": "1.0.*"
     },
     "require-dev": {
         "mockery/mockery": "^1.0",
-        "orchestra/testbench": "3.6.*|3.7.*",
-        "laravel/framework": "5.6.*|5.7.*",
+        "orchestra/testbench": "^3.6",
+        "laravel/framework": "^5.6",
         "phpunit/phpunit": "7.*",
-        "orchestra/database": "3.6.x-dev"
+        "orchestra/database": "3.8.x-dev"
     },
     "autoload": {
         "psr-4": {

tests/BaseTest.php

@@ -6,7 +6,7 @@
 
 abstract class BaseTest extends \PHPUnit\Framework\TestCase
 {
-    public function tearDown()
+    public function tearDown(): void
     {
         parent::tearDown();
 

tests/SetupCommandTest.php

@@ -24,9 +24,8 @@ public function it_requires_a_bot_token()
 
         $this->app[Kernel::class]->registerCommand($command);
 
-        $returnCode = $this->artisan('discord:setup');
-
-        $this->assertEquals($returnCode, -1);
+        $this->artisan('discord:setup')
+             ->assertExitCode(-1);
     }
 
     /** @test */
@@ -41,9 +40,8 @@ public function it_tells_the_user_to_connect_the_bot_to_their_discord_server()
 
         $this->app[Kernel::class]->registerCommand($command);
 
-        $returnCode = $this->artisan('discord:setup');
-
-        $this->assertEquals($returnCode, -1);
+        $this->artisan('discord:setup')
+             ->assertExitCode(-1);
     }
 
     /** @test */
@@ -164,8 +162,7 @@ public function it_notifies_the_user_of_a_failed_identification_attempt()
 
         $this->app[Kernel::class]->registerCommand($command);
 
-        $returnCode = $this->artisan('discord:setup');
-
-        $this->assertEquals($returnCode, -1);
+        $this->artisan('discord:setup')
+             ->assertExitCode(-1);
     }
 }