impemented mock testing

src/sal/traits.rs

@@ -2,6 +2,24 @@ use anyhow::Result;
 use thiserror::Error;
 use miette::Diagnostic;
 use std::sync::Arc;
+use std::path::PathBuf;
+use crate::sys::SyscallRunner;
+
+/// Context holding OS abstractions (filesystem base and syscall runner).
+#[derive(Clone)]
+pub struct EnvironmentCtx {
+    pub sysfs_base: PathBuf,
+    pub runner: Arc<dyn SyscallRunner>,
+}
+
+impl EnvironmentCtx {
+    pub fn production() -> Self {
+        Self {
+            sysfs_base: PathBuf::from("/"),
+            runner: Arc::new(crate::sys::RealSyscallRunner),
+        }
+    }
+}
 
 #[derive(Error, Diagnostic, Debug, Clone)]
 pub enum AuditError {