From bac4fa595391a62963fa6c20562d98d9b1b5061d Mon Sep 17 00:00:00 2001
From: Sebastian Bergmann <sb@sebastian-bergmann.de>
Date: Mon, 19 Nov 2018 18:01:24 +0100
Subject: [PATCH] Add tests

---
 tests/unit/Framework/AssertTest.php | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tests/unit/Framework/AssertTest.php b/tests/unit/Framework/AssertTest.php
index 8736de25894..fa7e09c74f0 100644
--- a/tests/unit/Framework/AssertTest.php
+++ b/tests/unit/Framework/AssertTest.php
@@ -113,6 +113,20 @@ public function testAssertContainsEmptyStringInString(): void
         $this->assertContains('', 'test');
     }
 
+    public function testAssertStringContainsNonString(): void
+    {
+        $this->expectException(Exception::class);
+
+        $this->assertContains(null, '');
+    }
+
+    public function testAssertStringNotContainsNonString(): void
+    {
+        $this->expectException(Exception::class);
+
+        $this->assertNotContains(null, '');
+    }
+
     public function testAssertArrayHasKeyThrowsExceptionForInvalidFirstArgument(): void
     {
         $this->expectException(Exception::class);