add html driver unittest

Gummibeer · Gummibeer · commit 5893d245fe15 · 2019-10-09T11:21:10.000+02:00
diff --git a/tests/Unit/Drivers/HtmlDriverTest.php b/tests/Unit/Drivers/HtmlDriverTest.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Spatie\Snapshots\Test\Unit\Drivers;
+
+use PHPUnit\Framework\TestCase;
+use Spatie\Snapshots\Drivers\HtmlDriver;
+use Spatie\Snapshots\Exceptions\CantBeSerialized;
+
+class HtmlDriverTest extends TestCase
+{
+    /** @test */
+    public function it_can_serialize_a_html_string_to_pretty_html()
+    {
+        $driver = new HtmlDriver();
+
+        $expected = implode(PHP_EOL, [
+            '<!DOCTYPE html>',
+            '<html lang="en">',
+            '<head></head>',
+            '<body><h1>Hello, world!</h1></body>',
+            '</html>',
+            '',
+        ]);
+
+        $this->assertEquals($expected, $driver->serialize('<!doctype html><html lang="en"><head></head><body><h1>Hello, world!</h1></body></html>'));
+    }
+
+    /** @test */
+    public function it_can_only_serialize_strings()
+    {
+        $driver = new HtmlDriver();
+
+        $this->expectException(CantBeSerialized::class);
+
+        $driver->serialize(['foo' => 'bar']);
+    }
+}
