From b6f73dbf1d40467c4a07c6b4fb8f86d579055f85 Mon Sep 17 00:00:00 2001
From: Guilliam Xavier <guilliamxavier@users.noreply.github.com>
Date: Fri, 31 Aug 2018 16:00:15 +0200
Subject: [PATCH] Re-add a test for #2907 (lost in commit d0dab53)

---
 .../Constraint/StringMatchesFormatDescriptionTest.php  | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/Framework/Constraint/StringMatchesFormatDescriptionTest.php b/tests/Framework/Constraint/StringMatchesFormatDescriptionTest.php
index bc9fe7a6131..b13d2bbd0a9 100644
--- a/tests/Framework/Constraint/StringMatchesFormatDescriptionTest.php
+++ b/tests/Framework/Constraint/StringMatchesFormatDescriptionTest.php
@@ -193,6 +193,16 @@ public function testConstraintStringMatchesCharacter(): void
         $this->assertCount(1, $constraint);
     }
 
+    public function testConstraintStringMatchesEscapedPercent(): void
+    {
+        $constraint = new StringMatchesFormatDescription('%%,%%e,%%s,%%S,%%a,%%A,%%w,%%i,%%d,%%x,%%f,%%c,%%Z,%%%%,%%');
+
+        $this->assertFalse($constraint->evaluate('%%,%' . \DIRECTORY_SEPARATOR . ',%*,%*,%*,%*,% ,%0,%0,%0f0f0f,%1.0,%*,%%Z,%%%%,%%', '', true));
+        $this->assertTrue($constraint->evaluate('%,%e,%s,%S,%a,%A,%w,%i,%d,%x,%f,%c,%Z,%%,%', '', true));
+        $this->assertEquals('matches PCRE pattern "/^%,%e,%s,%S,%a,%A,%w,%i,%d,%x,%f,%c,%Z,%%,%$/s"', $constraint->toString());
+        $this->assertCount(1, $constraint);
+    }
+
     public function testConstraintStringMatchesSlash(): void
     {
         $constraint = new StringMatchesFormatDescription('/');