Basic unit tests to verify that the Xlsx Reader can read both the old…

…er and Office365 variants of the files used to store AutoFilter structure

tests/PhpSpreadsheetTests/Features/AutoFilter/Xlsx/BasicLoadTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Features\AutoFilter\Xlsx;
+
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
+use PHPUnit\Framework\TestCase;
+
+class BasicLoadTest extends TestCase
+{
+    public function testLoadAutoFilter()
+    {
+        $filename = 'tests/data/Features/AutoFilter/Xlsx/AutoFilter_Basic.xlsx';
+        $reader = new Xlsx();
+        $spreadsheet = $reader->load($filename);
+
+        $worksheet = $spreadsheet->getActiveSheet();
+        self::assertSame('A1:D57', $worksheet->getAutoFilter()->getRange());
+    }
+
+    public function testLoadOffice365AutoFilter()
+    {
+        $filename = 'tests/data/Features/AutoFilter/Xlsx/AutoFilter_Basic_Office365.xlsx';
+        $reader = new Xlsx();
+        $spreadsheet = $reader->load($filename);
+
+        $worksheet = $spreadsheet->getActiveSheet();
+        self::assertSame('A1:D57', $worksheet->getAutoFilter()->getRange());
+    }
+}