Test behavior of rmdir on symlink to dir

tests/rust/wasm32-wasip3/src/bin/test-rmdir-symlink.json

@@ -0,0 +1,3 @@
+{
+    "dirs": ["fs-tests.dir"]
+}

tests/rust/wasm32-wasip3/src/bin/test-rmdir-symlink.rs

@@ -0,0 +1,54 @@
+use std::process;
+extern crate wit_bindgen;
+
+wit_bindgen::generate!({
+    inline: r"
+  package test:test;
+
+  world test {
+      include wasi:filesystem/imports@0.3.0-rc-2025-09-16;
+      include wasi:cli/command@0.3.0-rc-2025-09-16;
+  }
+",
+    additional_derives: [PartialEq, Eq, Hash, Clone],
+    // Work around https://github.com/bytecodealliance/wasm-tools/issues/2285.
+    features:["clocks-timezone"],
+    generate_all
+});
+
+use wasi::filesystem::types::{Descriptor, ErrorCode};
+
+async fn test_rmdir_symlink(dir: &Descriptor) {
+    dir.symlink_at(".".to_string(), "dot".to_string())
+        .await
+        .unwrap();
+    assert_eq!(
+        dir.remove_directory_at("dot".to_string()).await,
+        Err(ErrorCode::NotDirectory)
+    );
+    assert_eq!(
+        dir.remove_directory_at("parent".to_string()).await,
+        Err(ErrorCode::NotDirectory)
+    );
+}
+
+struct Component;
+export!(Component);
+impl exports::wasi::cli::run::Guest for Component {
+    async fn run() -> Result<(), ()> {
+        match &wasi::filesystem::preopens::get_directories()[..] {
+            [(dir, dirname)] if dirname == "fs-tests.dir" => {
+                test_rmdir_symlink(dir).await;
+            }
+            [..] => {
+                eprintln!("usage: run with one open dir named 'fs-tests.dir'");
+                process::exit(1)
+            }
+        };
+        Ok(())
+    }
+}
+
+fn main() {
+    unreachable!("main is a stub");
+}