Add some tests for the module functions. (#1029)

Author: sunfishcode

tests/system/main.rs

@@ -3,6 +3,8 @@
 #![cfg(feature = "system")]
 #![cfg(not(any(windows, target_os = "wasi")))]
 
+#[cfg(linux_kernel)]
+mod module;
 #[cfg(target_os = "linux")]
 mod reboot;
 #[cfg(linux_kernel)]

tests/system/module.rs

@@ -0,0 +1,10 @@
+#[cfg(feature = "fs")]
+#[test]
+fn test_kernel_module() {
+    use rustix::cstr;
+    use rustix::system::*;
+
+    let _ = init_module(&[], cstr!(""));
+    let _ = finit_module(rustix::fs::CWD, cstr!(""), 0);
+    let _ = delete_module(cstr!(""), 0);
+}