From eea8cb6a0775078fea5263db2dd41c03108da2ae Mon Sep 17 00:00:00 2001
From: Sebastian Feldmann <sebastian.feldmann@check24.de>
Date: Fri, 7 Sep 2018 17:12:34 +0200
Subject: [PATCH] Make --filter case insensitive - issue #3181

---
 src/Runner/Filter/NameFilterIterator.php      |  2 +-
 .../Runner/Filter/NameFilterIteratorTest.php  | 42 +++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 tests/unit/Runner/Filter/NameFilterIteratorTest.php

diff --git a/src/Runner/Filter/NameFilterIterator.php b/src/Runner/Filter/NameFilterIterator.php
index af0a37c0533..46e71875366 100644
--- a/src/Runner/Filter/NameFilterIterator.php
+++ b/src/Runner/Filter/NameFilterIterator.php
@@ -79,7 +79,7 @@ protected function setFilter($filter)
 
             // Escape delimiters in regular expression. Do NOT use preg_quote,
             // to keep magic characters.
-            $filter = \sprintf('/%s/', \str_replace(
+            $filter = \sprintf('/%s/i', \str_replace(
                 '/',
                 '\\/',
                 $filter
diff --git a/tests/unit/Runner/Filter/NameFilterIteratorTest.php b/tests/unit/Runner/Filter/NameFilterIteratorTest.php
new file mode 100644
index 00000000000..ef6e49329ec
--- /dev/null
+++ b/tests/unit/Runner/Filter/NameFilterIteratorTest.php
@@ -0,0 +1,42 @@
+<?php
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace unit\Runner\Filter;
+
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Runner\Filter\NameFilterIterator;
+
+class NameFilterIteratorTest extends TestCase
+{
+    public function testCaseSensitiveMatch()
+    {
+        $iterator = $this->getTestSuiteItteratorMock();
+        $filter   = new NameFilterIterator($iterator, 'Success');
+        $this->assertTrue((bool) $filter->accept());
+    }
+
+    public function testCaseInsensitiveMatch()
+    {
+        $iterator = $this->getTestSuiteItteratorMock();
+        $filter   = new NameFilterIterator($iterator, 'success');
+        $this->assertTrue((bool) $filter->accept());
+    }
+
+    /**
+     * @return \PHPUnit\Framework\TestSuiteIterator
+     */
+    private function getTestSuiteItteratorMock()
+    {
+        $success   = new \Success();
+        $iterator = $this->createMock(\PHPUnit\Framework\TestSuiteIterator::class);
+        $iterator->expects($this->once())->method('current')->willReturn($success);
+
+        return $iterator;
+    }
+}