Implement testing helper trait

src/Traits/WithToastr.php

@@ -0,0 +1,37 @@
+<?php 
+
+namespace ActivismeBe\Toastr\Traits;
+
+/**
+ * Trait WithToastr 
+ * -----
+ * Trait for checking the toastr session's in phpunit functions. 
+ * 
+ * @author      Tim Joosten <[email protected]>
+ * @copyright   2018 Tim Joosten <MIT license>
+ * @package     ActivismeBe\Toastr\Testing
+ */
+trait WithToastr 
+{
+    /**
+     * Custom assertions for toastr flash messages. 
+     * 
+     * @param  string $type     The type of the toastr notification. 
+     * @param  string $title    The title of the toastr notification.
+     * @param  string $message  The actual toastr message. 
+     * @param  array  $options  The user defined configuration for the toastr message.
+     * @return void
+     */
+    protected function assertHasToastr(string $type, string $title, string $message, array $options = []): void
+    {
+        $expectedNotification = ['type' => $type, 'title' => $title, 'message' => $message, 'options' => $options];
+        $flashNotifications   = json_decode(json_encode(session('toastr::notifications')), true);
+        $assertMessage        = 'Failed asserting that the toastr message '. $message .' is present';
+
+        if (! $flashNotifications) {
+            $this->fail('Failed asserting that a flash message was sent.');
+        }
+
+        $this->assertContains($expectedNotification, $flashNotifications, $assertMessage);
+    }
+}