Add text driver tests

Author: mallardduck

tests/Unit/Drivers/TextDriverTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Spatie\Snapshots\Test\Unit\Drivers;
+
+use PHPUnit\Framework\TestCase;
+use Spatie\Snapshots\Drivers\TextDriver;
+use Spatie\Snapshots\Exceptions\CantBeSerialized;
+
+class TextDriverTest extends TestCase
+{
+    /** @test */
+    public function it_can_serialize_laravel_route_list()
+    {
+        $driver = new TextDriver();
+
+        $expected = implode("\n", [
+            '',
+            '  GET|HEAD       / ..................................................... index',
+            '',
+            '                                                            Showing [1] routes'
+        ]);
+
+        $this->assertEquals($expected, $driver->serialize(<<<EOF
+
+  GET|HEAD       / ..................................................... index
+
+                                                            Showing [1] routes
+EOF));
+    }
+
+    /** @test */
+    public function it_can_serialize_when_given_windows_line_endings()
+    {
+        $driver = new TextDriver();
+
+        $expected = <<<EOF
+
+  GET|HEAD       / ..................................................... index
+
+                                                            Showing [1] routes
+EOF;
+        // Due to using PHP_EOL this should fail (conditionally) when run on windows
+        $actual = implode(PHP_EOL, [
+            '',
+            '  GET|HEAD       / ..................................................... index',
+            '',
+            '                                                            Showing [1] routes'
+        ]);
+
+        $this->assertEquals($expected, $driver->serialize($actual));
+    }
+
+}