From b8cac8b0f025b65e1f665a68fe5a7b47860f9f78 Mon Sep 17 00:00:00 2001
From: tommady <tommady@users.noreply.github.com>
Date: Fri, 1 Oct 2021 11:04:17 +0000
Subject: [PATCH] adding test_bind_dev

---
 src/rootfs.rs       | 29 +++++++++++++++++++++++++++++
 src/syscall/test.rs | 41 +++++++++++++++++++++++++++++++++++------
 2 files changed, 64 insertions(+), 6 deletions(-)

diff --git a/src/rootfs.rs b/src/rootfs.rs
index d512132d2..f23eefe4b 100644
--- a/src/rootfs.rs
+++ b/src/rootfs.rs
@@ -770,4 +770,33 @@ mod tests {
             .get_symlink_args();
         assert_eq!(want, got)
     }
+
+    #[test]
+    #[serial]
+    fn test_bind_dev() {
+        let rootfs = RootFS::new();
+        assert!(rootfs
+            .bind_dev(
+                Path::new("/tmp"),
+                &LinuxDeviceBuilder::default()
+                    .path(PathBuf::from("/null"))
+                    .build()
+                    .unwrap(),
+            )
+            .is_ok());
+        let want = (
+            Some(PathBuf::from("/null")),
+            PathBuf::from("/tmp/null"),
+            Some("bind".to_string()),
+            MsFlags::MS_BIND,
+            None::<String>,
+        );
+        let got = &rootfs
+            .command
+            .as_any()
+            .downcast_ref::<TestHelperSyscall>()
+            .unwrap()
+            .get_mount_args()[0];
+        assert_eq!(want, *got)
+    }
 }
diff --git a/src/syscall/test.rs b/src/syscall/test.rs
index a8fe56df9..78574ba18 100644
--- a/src/syscall/test.rs
+++ b/src/syscall/test.rs
@@ -11,6 +11,15 @@ pub struct TestHelperSyscall {
     set_ns_args: RefCell<Vec<(i32, CloneFlags)>>,
     unshare_args: RefCell<Vec<CloneFlags>>,
     set_capability_args: RefCell<Vec<(CapSet, CapsHashSet)>>,
+    mount_args: RefCell<
+        Vec<(
+            Option<std::path::PathBuf>,
+            std::path::PathBuf,
+            Option<String>,
+            nix::mount::MsFlags,
+            Option<String>,
+        )>,
+    >,
     symlink_args: RefCell<Vec<(PathBuf, PathBuf)>>,
 }
 
@@ -20,6 +29,7 @@ impl Default for TestHelperSyscall {
             set_ns_args: RefCell::new(vec![]),
             unshare_args: RefCell::new(vec![]),
             set_capability_args: RefCell::new(vec![]),
+            mount_args: RefCell::new(vec![]),
             symlink_args: RefCell::new(vec![]),
         }
     }
@@ -73,13 +83,20 @@ impl Syscall for TestHelperSyscall {
 
     fn mount(
         &self,
-        _source: Option<&std::path::Path>,
-        _target: &std::path::Path,
-        _fstype: Option<&str>,
-        _flags: nix::mount::MsFlags,
-        _data: Option<&str>,
+        source: Option<&std::path::Path>,
+        target: &std::path::Path,
+        fstype: Option<&str>,
+        flags: nix::mount::MsFlags,
+        data: Option<&str>,
     ) -> anyhow::Result<()> {
-        todo!()
+        self.mount_args.borrow_mut().push((
+            source.map(|x| x.to_owned()),
+            target.to_owned(),
+            fstype.map(|x| x.to_owned()),
+            flags,
+            data.map(|x| x.to_owned()),
+        ));
+        Ok(())
     }
 
     fn symlink(&self, original: &std::path::Path, link: &std::path::Path) -> anyhow::Result<()> {
@@ -103,6 +120,18 @@ impl TestHelperSyscall {
         self.set_capability_args.borrow_mut().clone()
     }
 
+    pub fn get_mount_args(
+        &self,
+    ) -> Vec<(
+        Option<std::path::PathBuf>,
+        std::path::PathBuf,
+        Option<String>,
+        nix::mount::MsFlags,
+        Option<String>,
+    )> {
+        self.mount_args.borrow_mut().clone()
+    }
+
     pub fn get_symlink_args(&self) -> Vec<(PathBuf, PathBuf)> {
         self.symlink_args.borrow_mut().clone()
     }