Add hash equals method (#16696)

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/PHPUnit/Unit/CommonTest.php b/tests/PHPUnit/Unit/CommonTest.php
index 5dbdd4112f..d01315778e 100644
--- a/tests/PHPUnit/Unit/CommonTest.php
+++ b/tests/PHPUnit/Unit/CommonTest.php
@@ -32,6 +32,18 @@ class CommonTest extends TestCase
         $this->assertEquals(getmypid(), Common::getProcessId());
     }
 
+    public function test_hashEquals()
+    {
+        $this->assertFalse(Common::hashEquals('foo', 'bar'));
+        $this->assertFalse(Common::hashEquals('foo', 'fo'));
+        $this->assertFalse(Common::hashEquals('foo', 'fooo'));
+        $this->assertFalse(Common::hashEquals('foo', 'foa'));
+        $this->assertFalse(Common::hashEquals('foo', 'eoo'));
+        $this->assertFalse(Common::hashEquals('foo', ''));
+        $this->assertFalse(Common::hashEquals('', 'bar'));
+        $this->assertTrue(Common::hashEquals('foo', 'foo'));
+    }
+
     /**
      * Dataprovider for testSanitizeInputValues
      */