feat: Add Executor#mount_tmpfs, resolves #4

hakoniwa/src/executor.rs

@@ -290,6 +290,15 @@ impl Executor {
         self
     }
 
+    /// Mount new tmpfs on `dest`.
+    pub fn mount_tmpfs<P1: AsRef<Path>>(
+        &mut self,
+        dest: P1,
+    ) -> Result<&mut Self> {
+        self._bind("", dest, Some("tmpfs"), Some(true))
+    }
+
+
     /// Bind mount the `src` on `dest` with **read-only** access in the container.
     pub fn ro_bind<P1: AsRef<Path>, P2: AsRef<Path>>(
         &mut self,

hakoniwa/tests/executor_test.rs

@@ -173,6 +173,18 @@ mounts = [
         );
     }
 
+    #[test]
+    fn test_mount_tmpfs() {
+        let mut executor = sandbox().command("findmnt", &["findmnt", "-T", "/mytmp"]);
+        let result = executor
+            .mount_tmpfs("/mytmp")
+            .unwrap()
+            .run();
+        assert_eq!(result.status, ExecutorResultStatus::Ok);
+        assert_eq!(result.exit_code, Some(0));
+        assert!(String::from_utf8_lossy(&result.stdout).contains("tmpfs"));
+    }
+
     #[test]
     fn test_ro_bind() {
         let mut executor = sandbox().command("touch", &["touch", "Cargo.toml"]);