oni-php: Add snippet for test class

oni-php/snippets/php-mode/test-class

@@ -0,0 +1,15 @@
+# -*- mode: snippet -*-
+# name: test-class
+# key: test
+# --
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Foundation\Testing\WithFaker;
+use Tests\TestCase;
+
+class ${1:`(file-name-sans-extension (file-name-nondirectory (buffer-file-name)))`} extends TestCase
+{
+    use RefreshDatabase, WithFaker;
+
+    $0
+}