add test coverage for setHeader original case preservation logic

slimphp · May 3, 2019 · d15f864 · d15f864
1 parent 3e34a38
commit d15f864
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/tests/HeadersTest.php b/tests/HeadersTest.php
@@ -88,6 +88,18 @@ public function testSetHeader()
         $this->assertEquals(['Content-Length' => ['100']], $headers->getHeaders(true));
     }
 
+    public function testSetHeaderPreservesOriginalCaseIfHeaderAlreadyExists()
+    {
+        $headers = new Headers([
+            'CONTENT-LENGTH' => 0,
+        ]);
+
+        $headers->setHeader('Content-Length', 100);
+
+        $this->assertEquals(['content-length' => ['100']], $headers->getHeaders());
+        $this->assertEquals(['CONTENT-LENGTH' => ['100']], $headers->getHeaders(true));
+    }
+
     public function testSetHeaders()
     {
         $headers = new Headers([