diff --git a/test/src/Stream/StreamWriterTest.php b/test/src/Stream/StreamWriterTest.php
index 46a3774..060dd42 100644
--- a/test/src/Stream/StreamWriterTest.php
+++ b/test/src/Stream/StreamWriterTest.php
@@ -69,11 +69,11 @@ public function testWriteAutoCloseOff()
 
         $writer = new StreamWriter($value_stream, $stream, $buffer_size);
 
-        $this->assertTrue(is_resource($stream));
+        $this->assertSame("stream", get_resource_type($stream));
 
         while ($ret = $writer->write(false));
 
-        $this->assertTrue(is_resource($stream));
+        $this->assertSame("Unknown", get_resource_type($stream));
     }
 
 
@@ -89,11 +89,11 @@ public function testWriteAutoCloseOn()
 
         $writer = new StreamWriter($value_stream, $stream, $buffer_size);
 
-        $this->assertTrue(is_resource($stream));
+        $this->assertSame("stream", get_resource_type($stream));
 
         while ($ret = $writer->write(true));
 
-        $this->assertFalse(is_resource($stream));
+        $this->assertSame("Unknown", get_resource_type($stream));
     }
 
 }