diff --git a/Cargo.toml b/Cargo.toml
index 84b2673..c2f87f0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "mapped-file"
 description = "Construct a memory mapping over any file object"
 keywords = ["unix", "mmap", "generic", "file", "fd"]
-version = "0.0.5"
+version = "0.0.6"
 edition = "2021"
 repository="https://github.com/notflan/mapped-file"
 license="MIT"
diff --git a/src/file.rs b/src/file.rs
index 0ff5363..27aacb1 100644
--- a/src/file.rs
+++ b/src/file.rs
@@ -39,4 +39,13 @@ mod tests
 	test_fileno::<STDOUT_FILENO>("STDOUT_FILENO", std::io::stdout().as_raw_fd());
 	test_fileno::<STDERR_FILENO>("STDERR_FILENO", std::io::stderr().as_raw_fd());
     }
+
+    #[test]
+    fn test_readwrite()
+    {
+	let mut input = ManagedFD::from(memory::MemoryFile::new().unwrap());
+	let mut output = memory::MemoryFile::new().unwrap();
+	assert_eq!(std::io::copy(&mut input, &mut output).unwrap(), 0, "Bad read");
+
+    }
 }