Add test for mkdir -> rename -> mkdir

tests/integration/cli/tests/snapshot.rs

@@ -1359,3 +1359,12 @@ fn test_snapshot_worker_panicking() {
     ));
     assert_json_snapshot!(snapshot);
 }
+
+#[cfg_attr(any(target_env = "musl", target_os = "windows"), ignore)]
+#[test]
+fn test_snapshot_mkdir_rename() {
+    let snapshot = TestBuilder::new()
+        .with_name(function!())
+        .run_wasm(include_bytes!("./wasm/mkdir-rename.wasm"));
+    assert_json_snapshot!(snapshot);
+}

tests/integration/cli/tests/snapshots/snapshot__snapshot_mkdir_rename.snap

@@ -0,0 +1,22 @@
+---
+source: tests/integration/cli/tests/snapshot.rs
+assertion_line: 1369
+expression: snapshot
+---
+{
+  "spec": {
+    "name": "snapshot::test_snapshot_mkdir_rename",
+    "use_packages": [],
+    "include_webcs": [],
+    "cli_args": [],
+    "enable_threads": true,
+    "enable_network": false
+  },
+  "result": {
+    "Success": {
+      "stdout": "",
+      "stderr": "",
+      "exit_code": 0
+    }
+  }
+}

tests/rust-wasi-tests/src/bin/mkdir-rename.rs

@@ -0,0 +1,12 @@
+fn main() {
+    std::fs::create_dir("/a").unwrap();
+    assert!(std::fs::metadata("/a").unwrap().is_dir());
+
+    std::fs::rename("/a", "/b").unwrap();
+    assert!(matches!(std::fs::metadata("/a"), Err(e) if e.kind() == std::io::ErrorKind::NotFound));
+    assert!(std::fs::metadata("/b").unwrap().is_dir());
+
+    std::fs::create_dir("/a").unwrap();
+    assert!(std::fs::metadata("/a").unwrap().is_dir());
+    assert!(std::fs::metadata("/b").unwrap().is_dir());
+}