add tests for snapshots external to the tests directory

tests-external/Features/Expect/toMatchSnapshot.php

@@ -0,0 +1,35 @@
+<?php
+
+use Pest\TestSuite;
+
+beforeEach(function () {
+    $this->snapshotable = <<<'HTML'
+        <div class="container">
+            <div class="row">
+                <div class="col-md-12">
+                    <h1>Snapshot</h1>
+                </div>
+            </div>
+        </div>
+    HTML;
+});
+
+test('pass with dataset', function ($data) {
+    TestSuite::getInstance()->snapshots->save($this->snapshotable);
+    [$filename] = TestSuite::getInstance()->snapshots->get();
+
+    expect($filename)->toStartWith('tests/.pest/snapshots-external/')
+        ->toEndWith('pass_with_dataset_with_data_set____my_datas_set_value______my_datas_set_value__.snap')
+        ->and($this->snapshotable)->toMatchSnapshot();
+})->with(['my-datas-set-value']);
+
+describe('within describe', function () {
+    test('pass with dataset', function ($data) {
+        TestSuite::getInstance()->snapshots->save($this->snapshotable);
+        [$filename] = TestSuite::getInstance()->snapshots->get();
+
+        expect($filename)->toStartWith('tests/.pest/snapshots-external/')
+            ->toEndWith('pass_with_dataset_with_data_set____my_datas_set_value______my_datas_set_value__.snap')
+            ->and($this->snapshotable)->toMatchSnapshot();
+    });
+})->with(['my-datas-set-value']);