diff --git a/crates/test-programs/tests/wasm_tests/runtime.rs b/crates/test-programs/tests/wasm_tests/runtime.rs
index 6b00db61b4..2c3a6e3b3d 100644
--- a/crates/test-programs/tests/wasm_tests/runtime.rs
+++ b/crates/test-programs/tests/wasm_tests/runtime.rs
@@ -33,7 +33,8 @@ pub fn instantiate(data: &[u8], bin_name: &str, workspace: Option<&Path>) -> any
             builder = builder
                 .env("ERRNO_MODE_WINDOWS", "1")?
                 .env("NO_DANGLING_SYMLINKS", "1")?
-                .env("NO_FD_ALLOCATE", "1")?;
+                .env("NO_FD_ALLOCATE", "1")?
+                .env("NO_RENAME_DIR_TO_EMPTY_DIR", "1")?;
         }
         #[cfg(unix)]
         {
diff --git a/crates/test-programs/wasi-tests/src/bin/close_preopen.rs b/crates/test-programs/wasi-tests/src/bin/close_preopen.rs
index 7dabc044df..d2858e028f 100644
--- a/crates/test-programs/wasi-tests/src/bin/close_preopen.rs
+++ b/crates/test-programs/wasi-tests/src/bin/close_preopen.rs
@@ -8,12 +8,11 @@ unsafe fn test_close_preopen(dir_fd: wasi::Fd) {
     assert_gt!(dir_fd, pre_fd, "dir_fd number");
 
     // Try to close a preopened directory handle.
-    assert_eq!(
+    assert_errno!(
         wasi::fd_close(pre_fd)
             .expect_err("closing a preopened file descriptor")
             .raw_error(),
-        wasi::ERRNO_NOTSUP,
-        "errno should ERRNO_NOTSUP",
+        wasi::ERRNO_NOTSUP
     );
 
     // Try to renumber over a preopened directory handle.
@@ -21,7 +20,7 @@ unsafe fn test_close_preopen(dir_fd: wasi::Fd) {
         wasi::fd_renumber(dir_fd, pre_fd)
             .expect_err("renumbering over a preopened file descriptor")
             .raw_error(),
-        wasi::ERRNO_NOTSUP,
+        wasi::ERRNO_NOTSUP
     );
 
     // Ensure that dir_fd is still open.
@@ -37,7 +36,7 @@ unsafe fn test_close_preopen(dir_fd: wasi::Fd) {
         wasi::fd_renumber(pre_fd, dir_fd)
             .expect_err("renumbering over a preopened file descriptor")
             .raw_error(),
-        wasi::ERRNO_NOTSUP,
+        wasi::ERRNO_NOTSUP
     );
 
     // Ensure that dir_fd is still open.
diff --git a/crates/test-programs/wasi-tests/src/bin/dangling_symlink.rs b/crates/test-programs/wasi-tests/src/bin/dangling_symlink.rs
index 4448ab9abd..7d5e960322 100644
--- a/crates/test-programs/wasi-tests/src/bin/dangling_symlink.rs
+++ b/crates/test-programs/wasi-tests/src/bin/dangling_symlink.rs
@@ -19,7 +19,7 @@ unsafe fn test_dangling_symlink(dir_fd: wasi::Fd) {
         wasi::path_open(dir_fd, 0, "symlink", 0, 0, 0, 0)
             .expect_err("opening a dangling symlink as a file")
             .raw_error(),
-        wasi::ERRNO_LOOP,
+        wasi::ERRNO_LOOP
     );
 
     // Clean up.
diff --git a/crates/test-programs/wasi-tests/src/bin/directory_seek.rs b/crates/test-programs/wasi-tests/src/bin/directory_seek.rs
index a8d5c5b740..7ccbceb8f7 100644
--- a/crates/test-programs/wasi-tests/src/bin/directory_seek.rs
+++ b/crates/test-programs/wasi-tests/src/bin/directory_seek.rs
@@ -28,7 +28,7 @@ unsafe fn test_directory_seek(dir_fd: wasi::Fd) {
         wasi::fd_seek(fd, 0, wasi::WHENCE_CUR)
             .expect_err("seek on a directory")
             .raw_error(),
-        wasi::ERRNO_BADF,
+        wasi::ERRNO_BADF
     );
 
     // Check if we obtained the right to seek.
diff --git a/crates/test-programs/wasi-tests/src/bin/file_seek_tell.rs b/crates/test-programs/wasi-tests/src/bin/file_seek_tell.rs
index 1d256cb7aa..64646c4cd1 100644
--- a/crates/test-programs/wasi-tests/src/bin/file_seek_tell.rs
+++ b/crates/test-programs/wasi-tests/src/bin/file_seek_tell.rs
@@ -61,7 +61,7 @@ unsafe fn test_file_seek_tell(dir_fd: wasi::Fd) {
         wasi::fd_seek(file_fd, -2000, wasi::WHENCE_CUR)
             .expect_err("seeking before byte 0 should be an error")
             .raw_error(),
-        wasi::ERRNO_INVAL,
+        wasi::ERRNO_INVAL
     );
 
     // Check that fd_read properly updates the file offset
diff --git a/crates/test-programs/wasi-tests/src/bin/interesting_paths.rs b/crates/test-programs/wasi-tests/src/bin/interesting_paths.rs
index 2ffde029fa..7e112167b8 100644
--- a/crates/test-programs/wasi-tests/src/bin/interesting_paths.rs
+++ b/crates/test-programs/wasi-tests/src/bin/interesting_paths.rs
@@ -17,7 +17,7 @@ unsafe fn test_interesting_paths(dir_fd: wasi::Fd, arg: &str) {
         wasi::path_open(dir_fd, 0, "/dir/nested/file", 0, 0, 0, 0)
             .expect_err("opening a file with an absolute path")
             .raw_error(),
-        wasi::ERRNO_PERM,
+        wasi::ERRNO_PERM
     );
 
     // Now open it with a path containing "..".
@@ -43,7 +43,7 @@ unsafe fn test_interesting_paths(dir_fd: wasi::Fd, arg: &str) {
         wasi::path_open(dir_fd, 0, "dir/nested/file\0", 0, 0, 0, 0)
             .expect_err("opening a file with a trailing NUL")
             .raw_error(),
-        wasi::ERRNO_ILSEQ,
+        wasi::ERRNO_ILSEQ
     );
 
     // Now open it with a trailing slash.
@@ -52,7 +52,7 @@ unsafe fn test_interesting_paths(dir_fd: wasi::Fd, arg: &str) {
             .expect_err("opening a file with a trailing slash should fail")
             .raw_error(),
         wasi::ERRNO_NOTDIR,
-        wasi::ERRNO_NOENT,
+        wasi::ERRNO_NOENT
     );
 
     // Now open it with trailing slashes.
@@ -61,7 +61,7 @@ unsafe fn test_interesting_paths(dir_fd: wasi::Fd, arg: &str) {
             .expect_err("opening a file with trailing slashes should fail")
             .raw_error(),
         wasi::ERRNO_NOTDIR,
-        wasi::ERRNO_NOENT,
+        wasi::ERRNO_NOENT
     );
 
     // Now open the directory with a trailing slash.
@@ -90,7 +90,7 @@ unsafe fn test_interesting_paths(dir_fd: wasi::Fd, arg: &str) {
         wasi::path_open(dir_fd, 0, &bad_path, 0, 0, 0, 0)
             .expect_err("opening a file with too many \"..\"s in the path should fail")
             .raw_error(),
-        wasi::ERRNO_PERM,
+        wasi::ERRNO_PERM
     );
     wasi::path_unlink_file(dir_fd, "dir/nested/file")
         .expect("unlink_file on a symlink should succeed");
diff --git a/crates/test-programs/wasi-tests/src/bin/nofollow_errors.rs b/crates/test-programs/wasi-tests/src/bin/nofollow_errors.rs
index dd5aaf71e9..50ba68e8ad 100644
--- a/crates/test-programs/wasi-tests/src/bin/nofollow_errors.rs
+++ b/crates/test-programs/wasi-tests/src/bin/nofollow_errors.rs
@@ -16,7 +16,7 @@ unsafe fn test_nofollow_errors(dir_fd: wasi::Fd) {
             .expect_err("opening a directory symlink as a directory should fail")
             .raw_error(),
         wasi::ERRNO_LOOP,
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
 
     // Try to open it with just O_NOFOLLOW.
@@ -25,7 +25,7 @@ unsafe fn test_nofollow_errors(dir_fd: wasi::Fd) {
             .expect_err("opening a symlink with O_NOFOLLOW should fail")
             .raw_error(),
         wasi::ERRNO_LOOP,
-        wasi::ERRNO_ACCES,
+        wasi::ERRNO_ACCES
     );
 
     // Try to open it as a directory without O_NOFOLLOW.
@@ -70,7 +70,7 @@ unsafe fn test_nofollow_errors(dir_fd: wasi::Fd) {
         wasi::path_open(dir_fd, 0, "symlink", 0, 0, 0, 0)
             .expect_err("opening a symlink with NOFOLLOW should fail")
             .raw_error(),
-        wasi::ERRNO_LOOP,
+        wasi::ERRNO_LOOP
     );
 
     // Try to open it as a directory without O_NOFOLLOW.
@@ -86,7 +86,7 @@ unsafe fn test_nofollow_errors(dir_fd: wasi::Fd) {
         )
         .expect_err("opening a symlink to a file as a directory")
         .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
 
     // Clean up.
diff --git a/crates/test-programs/wasi-tests/src/bin/path_filestat.rs b/crates/test-programs/wasi-tests/src/bin/path_filestat.rs
index e6c8f19569..cb55e07b77 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_filestat.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_filestat.rs
@@ -92,7 +92,7 @@ unsafe fn test_path_filestat(dir_fd: wasi::Fd) {
         )
         .expect_err("ATIM & ATIM_NOW can't both be set")
         .raw_error(),
-        wasi::ERRNO_INVAL,
+        wasi::ERRNO_INVAL
     );
 
     wasi::fd_close(file_fd).expect("closing a file");
diff --git a/crates/test-programs/wasi-tests/src/bin/path_link.rs b/crates/test-programs/wasi-tests/src/bin/path_link.rs
index 776c1ad036..0178c529c6 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_link.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_link.rs
@@ -148,7 +148,7 @@ unsafe fn test_path_link(dir_fd: wasi::Fd) {
         wasi::path_link(dir_fd, 0, "file", dir_fd, "link/")
             .expect_err("creating a link to a file with trailing slash should fail")
             .raw_error(),
-        wasi::ERRNO_NOENT,
+        wasi::ERRNO_NOENT
     );
 
     // XXX windows doesnt support dangling symlinks - rest of file
@@ -176,7 +176,7 @@ unsafe fn test_path_link(dir_fd: wasi::Fd) {
         wasi::path_link(dir_fd, 0, "file", dir_fd, "symlink")
             .expect_err("creating a link where target is a dangling symlink")
             .raw_error(),
-        wasi::ERRNO_EXIST,
+        wasi::ERRNO_EXIST
     );
     wasi::path_unlink_file(dir_fd, "symlink").expect("removing a symlink");
 
@@ -194,7 +194,7 @@ unsafe fn test_path_link(dir_fd: wasi::Fd) {
         )
         .expect_err("calling path_link with LOOKUPFLAGS_SYMLINK_FOLLOW should fail")
         .raw_error(),
-        wasi::ERRNO_INVAL,
+        wasi::ERRNO_INVAL
     );
 
     // Clean up.
diff --git a/crates/test-programs/wasi-tests/src/bin/path_open_create_existing.rs b/crates/test-programs/wasi-tests/src/bin/path_open_create_existing.rs
index b9279b029d..21abc0598a 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_open_create_existing.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_open_create_existing.rs
@@ -15,7 +15,7 @@ unsafe fn test_path_open_create_existing(dir_fd: wasi::Fd) {
         )
         .expect_err("trying to create a file that already exists")
         .raw_error(),
-        wasi::ERRNO_EXIST,
+        wasi::ERRNO_EXIST
     );
     wasi::path_unlink_file(dir_fd, "file").expect("removing a file");
 }
diff --git a/crates/test-programs/wasi-tests/src/bin/path_open_dirfd_not_dir.rs b/crates/test-programs/wasi-tests/src/bin/path_open_dirfd_not_dir.rs
index 09fdc34720..7fda00334c 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_open_dirfd_not_dir.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_open_dirfd_not_dir.rs
@@ -10,7 +10,7 @@ unsafe fn test_dirfd_not_dir(dir_fd: wasi::Fd) {
         wasi::path_open(file_fd, 0, "foo", wasi::OFLAGS_CREAT, 0, 0, 0)
             .expect_err("non-directory base fd should get ERRNO_NOTDIR")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
     wasi::fd_close(file_fd).expect("closing a file");
 }
diff --git a/crates/test-programs/wasi-tests/src/bin/path_rename.rs b/crates/test-programs/wasi-tests/src/bin/path_rename.rs
index 950c35a731..79d4615a99 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_rename.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_rename.rs
@@ -1,6 +1,6 @@
 use more_asserts::assert_gt;
 use std::{env, process};
-use wasi_tests::{assert_errno, create_file, open_scratch_directory};
+use wasi_tests::{assert_errno, create_file, open_scratch_directory, TESTCONFIG};
 
 unsafe fn test_path_rename(dir_fd: wasi::Fd) {
     // First, try renaming a dir to nonexistent path
@@ -30,30 +30,32 @@ unsafe fn test_path_rename(dir_fd: wasi::Fd) {
     wasi::fd_close(fd).expect("closing a file");
     wasi::path_remove_directory(dir_fd, "target").expect("removing a directory");
 
-    // Now, try renaming renaming a dir to existing empty dir
-    wasi::path_create_directory(dir_fd, "source").expect("creating a directory");
-    wasi::path_create_directory(dir_fd, "target").expect("creating a directory");
-    wasi::path_rename(dir_fd, "source", dir_fd, "target").expect("renaming a directory");
+    if TESTCONFIG.support_rename_dir_to_empty_dir() {
+        // Now, try renaming renaming a dir to existing empty dir
+        wasi::path_create_directory(dir_fd, "source").expect("creating a directory");
+        wasi::path_create_directory(dir_fd, "target").expect("creating a directory");
+        wasi::path_rename(dir_fd, "source", dir_fd, "target").expect("renaming a directory");
 
-    // Check that source directory doesn't exist anymore
-    assert_errno!(
-        wasi::path_open(dir_fd, 0, "source", wasi::OFLAGS_DIRECTORY, 0, 0, 0)
-            .expect_err("opening a nonexistent path as a directory")
-            .raw_error(),
-        wasi::ERRNO_NOENT
-    );
+        // Check that source directory doesn't exist anymore
+        assert_errno!(
+            wasi::path_open(dir_fd, 0, "source", wasi::OFLAGS_DIRECTORY, 0, 0, 0)
+                .expect_err("opening a nonexistent path as a directory")
+                .raw_error(),
+            wasi::ERRNO_NOENT
+        );
 
-    // Check that target directory exists
-    fd = wasi::path_open(dir_fd, 0, "target", wasi::OFLAGS_DIRECTORY, 0, 0, 0)
-        .expect("opening renamed path as a directory");
-    assert_gt!(
-        fd,
-        libc::STDERR_FILENO as wasi::Fd,
-        "file descriptor range check",
-    );
+        // Check that target directory exists
+        fd = wasi::path_open(dir_fd, 0, "target", wasi::OFLAGS_DIRECTORY, 0, 0, 0)
+            .expect("opening renamed path as a directory");
+        assert_gt!(
+            fd,
+            libc::STDERR_FILENO as wasi::Fd,
+            "file descriptor range check",
+        );
 
-    wasi::fd_close(fd).expect("closing a file");
-    wasi::path_remove_directory(dir_fd, "target").expect("removing a directory");
+        wasi::fd_close(fd).expect("closing a file");
+        wasi::path_remove_directory(dir_fd, "target").expect("removing a directory");
+    }
 
     // Now, try renaming a dir to existing non-empty dir
     wasi::path_create_directory(dir_fd, "source").expect("creating a directory");
@@ -64,7 +66,8 @@ unsafe fn test_path_rename(dir_fd: wasi::Fd) {
         wasi::path_rename(dir_fd, "source", dir_fd, "target")
             .expect_err("renaming directory to a nonempty directory")
             .raw_error(),
-        wasi::ERRNO_NOTEMPTY
+        windows => wasi::ERRNO_ACCES,
+        unix => wasi::ERRNO_NOTEMPTY
     );
 
     // Try renaming dir to a file
@@ -128,7 +131,6 @@ unsafe fn test_path_rename(dir_fd: wasi::Fd) {
     wasi::fd_close(fd).expect("closing a file");
     wasi::path_unlink_file(dir_fd, "target").expect("removing a file");
 
-    // XXX windows does not support this operation
     // Try renaming to an (empty) directory instead
     create_file(dir_fd, "source");
     wasi::path_create_directory(dir_fd, "target").expect("creating a directory");
diff --git a/crates/test-programs/wasi-tests/src/bin/path_rename_file_trailing_slashes.rs b/crates/test-programs/wasi-tests/src/bin/path_rename_file_trailing_slashes.rs
index 67c6796098..b884a84d03 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_rename_file_trailing_slashes.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_rename_file_trailing_slashes.rs
@@ -13,19 +13,19 @@ unsafe fn test_path_rename_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_rename(dir_fd, "source/", dir_fd, "target")
             .expect_err("renaming a file with a trailing slash in the source name should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
     assert_errno!(
         wasi::path_rename(dir_fd, "source", dir_fd, "target/")
             .expect_err("renaming a file with a trailing slash in the destination name should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
     assert_errno!(
         wasi::path_rename(dir_fd, "source/", dir_fd, "target/")
             .expect_err("renaming a file with a trailing slash in the source and destination names should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
     wasi::path_unlink_file(dir_fd, "source").expect("removing a file");
 }
diff --git a/crates/test-programs/wasi-tests/src/bin/path_symlink_trailing_slashes.rs b/crates/test-programs/wasi-tests/src/bin/path_symlink_trailing_slashes.rs
index 5a63a13fb8..95e53790c0 100644
--- a/crates/test-programs/wasi-tests/src/bin/path_symlink_trailing_slashes.rs
+++ b/crates/test-programs/wasi-tests/src/bin/path_symlink_trailing_slashes.rs
@@ -8,7 +8,7 @@ unsafe fn test_path_symlink_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_symlink("source", dir_fd, "target/")
             .expect_err("link destination ending with a slash should fail")
             .raw_error(),
-        wasi::ERRNO_NOENT,
+        wasi::ERRNO_NOENT
     );
 
     // Dangling symlink: Without the trailing slash, this should succeed.
@@ -34,7 +34,7 @@ unsafe fn test_path_symlink_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_symlink("source", dir_fd, "target")
             .expect_err("link destination already exists")
             .raw_error(),
-        wasi::ERRNO_EXIST,
+        wasi::ERRNO_EXIST
     );
     wasi::path_remove_directory(dir_fd, "target").expect("removing a directory");
 
@@ -47,7 +47,7 @@ unsafe fn test_path_symlink_trailing_slashes(dir_fd: wasi::Fd) {
             .expect_err("link destination already exists")
             .raw_error(),
         wasi::ERRNO_EXIST,
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
     wasi::path_unlink_file(dir_fd, "target").expect("removing a file");
 
@@ -59,7 +59,7 @@ unsafe fn test_path_symlink_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_symlink("source", dir_fd, "target")
             .expect_err("link destination already exists")
             .raw_error(),
-        wasi::ERRNO_EXIST,
+        wasi::ERRNO_EXIST
     );
     wasi::path_unlink_file(dir_fd, "target").expect("removing a file");
 }
diff --git a/crates/test-programs/wasi-tests/src/bin/poll_oneoff.rs b/crates/test-programs/wasi-tests/src/bin/poll_oneoff.rs
index 2b1df93644..a680cf6309 100644
--- a/crates/test-programs/wasi-tests/src/bin/poll_oneoff.rs
+++ b/crates/test-programs/wasi-tests/src/bin/poll_oneoff.rs
@@ -21,7 +21,7 @@ unsafe fn test_empty_poll() {
         wasi::poll_oneoff(r#in.as_ptr(), out.as_mut_ptr(), r#in.len())
             .expect_err("empty poll_oneoff should fail")
             .raw_error(),
-        wasi::ERRNO_INVAL,
+        wasi::ERRNO_INVAL
     );
 }
 
@@ -42,7 +42,7 @@ unsafe fn test_timeout() {
     let out = poll_oneoff_impl(&r#in).unwrap();
     assert_eq!(out.len(), 1, "should return 1 event");
     let event = &out[0];
-    assert_errno!(event.error, wasi::ERRNO_SUCCESS,);
+    assert_errno!(event.error, wasi::ERRNO_SUCCESS);
     assert_eq!(
         event.r#type,
         wasi::EVENTTYPE_CLOCK,
diff --git a/crates/test-programs/wasi-tests/src/bin/remove_directory_trailing_slashes.rs b/crates/test-programs/wasi-tests/src/bin/remove_directory_trailing_slashes.rs
index 1a5a1dd68a..a7b296e703 100644
--- a/crates/test-programs/wasi-tests/src/bin/remove_directory_trailing_slashes.rs
+++ b/crates/test-programs/wasi-tests/src/bin/remove_directory_trailing_slashes.rs
@@ -25,7 +25,7 @@ unsafe fn test_remove_directory_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_remove_directory(dir_fd, "file")
             .expect_err("remove_directory without a trailing slash on a file should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
 
     // Test that removing it with a trailing slash fails.
@@ -34,7 +34,7 @@ unsafe fn test_remove_directory_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_remove_directory(dir_fd, "file/")
             .expect_err("remove_directory with a trailing slash on a file should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
 
     wasi::path_unlink_file(dir_fd, "file").expect("removing a file");
diff --git a/crates/test-programs/wasi-tests/src/bin/renumber.rs b/crates/test-programs/wasi-tests/src/bin/renumber.rs
index 8f86f83cc5..721c636362 100644
--- a/crates/test-programs/wasi-tests/src/bin/renumber.rs
+++ b/crates/test-programs/wasi-tests/src/bin/renumber.rs
@@ -53,7 +53,7 @@ unsafe fn test_renumber(dir_fd: wasi::Fd) {
         wasi::fd_close(fd_from)
             .expect_err("closing already closed file descriptor")
             .raw_error(),
-        wasi::ERRNO_BADF,
+        wasi::ERRNO_BADF
     );
 
     // Ensure that fd_to is still open.
diff --git a/crates/test-programs/wasi-tests/src/bin/symlink_loop.rs b/crates/test-programs/wasi-tests/src/bin/symlink_loop.rs
index 28dd21a1e1..e6edae2392 100644
--- a/crates/test-programs/wasi-tests/src/bin/symlink_loop.rs
+++ b/crates/test-programs/wasi-tests/src/bin/symlink_loop.rs
@@ -10,7 +10,7 @@ unsafe fn test_symlink_loop(dir_fd: wasi::Fd) {
         wasi::path_open(dir_fd, 0, "symlink", 0, 0, 0, 0)
             .expect_err("opening a self-referencing symlink")
             .raw_error(),
-        wasi::ERRNO_LOOP,
+        wasi::ERRNO_LOOP
     );
 
     // Clean up.
diff --git a/crates/test-programs/wasi-tests/src/bin/truncation_rights.rs b/crates/test-programs/wasi-tests/src/bin/truncation_rights.rs
index 13391d6a77..c28d11f1fa 100644
--- a/crates/test-programs/wasi-tests/src/bin/truncation_rights.rs
+++ b/crates/test-programs/wasi-tests/src/bin/truncation_rights.rs
@@ -68,7 +68,7 @@ unsafe fn test_truncation_rights(dir_fd: wasi::Fd) {
             wasi::path_open(dir_fd, 0, "file", wasi::OFLAGS_TRUNC, 0, 0, 0)
                 .expect_err("truncating a file without path_filestat_set_size right")
                 .raw_error(),
-            wasi::ERRNO_NOTCAPABLE,
+            wasi::ERRNO_NOTCAPABLE
         );
     }
 
diff --git a/crates/test-programs/wasi-tests/src/bin/unlink_file_trailing_slashes.rs b/crates/test-programs/wasi-tests/src/bin/unlink_file_trailing_slashes.rs
index 0079176cd6..90c2f32ad7 100644
--- a/crates/test-programs/wasi-tests/src/bin/unlink_file_trailing_slashes.rs
+++ b/crates/test-programs/wasi-tests/src/bin/unlink_file_trailing_slashes.rs
@@ -11,7 +11,7 @@ unsafe fn test_unlink_file_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_unlink_file(dir_fd, "dir")
             .expect_err("unlink_file on a directory should fail")
             .raw_error(),
-        wasi::ERRNO_ISDIR,
+        wasi::ERRNO_ISDIR
     );
 
     // Test that unlinking it with a trailing flash fails.
@@ -20,7 +20,7 @@ unsafe fn test_unlink_file_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_unlink_file(dir_fd, "dir/")
             .expect_err("unlink_file on a directory should fail")
             .raw_error(),
-        wasi::ERRNO_ISDIR,
+        wasi::ERRNO_ISDIR
     );
 
     // Clean up.
@@ -35,7 +35,7 @@ unsafe fn test_unlink_file_trailing_slashes(dir_fd: wasi::Fd) {
         wasi::path_unlink_file(dir_fd, "file/")
             .expect_err("unlink_file with a trailing slash should fail")
             .raw_error(),
-        wasi::ERRNO_NOTDIR,
+        wasi::ERRNO_NOTDIR
     );
 
     // Test that unlinking it with no trailing flash succeeds.
diff --git a/crates/test-programs/wasi-tests/src/config.rs b/crates/test-programs/wasi-tests/src/config.rs
index 109a1b21ca..132ac8dcb5 100644
--- a/crates/test-programs/wasi-tests/src/config.rs
+++ b/crates/test-programs/wasi-tests/src/config.rs
@@ -2,6 +2,7 @@ pub struct TestConfig {
     errno_mode: ErrnoMode,
     no_dangling_symlinks: bool,
     no_fd_allocate: bool,
+    no_rename_dir_to_empty_dir: bool,
 }
 
 enum ErrnoMode {
@@ -21,10 +22,12 @@ impl TestConfig {
         };
         let no_dangling_symlinks = std::env::var("NO_DANGLING_SYMLINKS").is_ok();
         let no_fd_allocate = std::env::var("NO_FD_ALLOCATE").is_ok();
+        let no_rename_dir_to_empty_dir = std::env::var("NO_RENAME_DIR_TO_EMPTY_DIR").is_ok();
         TestConfig {
             errno_mode,
             no_dangling_symlinks,
             no_fd_allocate,
+            no_rename_dir_to_empty_dir,
         }
     }
     pub fn errno_expect_unix(&self) -> bool {
@@ -45,4 +48,7 @@ impl TestConfig {
     pub fn support_fd_allocate(&self) -> bool {
         !self.no_fd_allocate
     }
+    pub fn support_rename_dir_to_empty_dir(&self) -> bool {
+        !self.no_rename_dir_to_empty_dir
+    }
 }
diff --git a/crates/test-programs/wasi-tests/src/lib.rs b/crates/test-programs/wasi-tests/src/lib.rs
index 0452573dda..5507f470ee 100644
--- a/crates/test-programs/wasi-tests/src/lib.rs
+++ b/crates/test-programs/wasi-tests/src/lib.rs
@@ -69,23 +69,20 @@ pub unsafe fn drop_rights(fd: wasi::Fd, drop_base: wasi::Rights, drop_inheriting
 
 #[macro_export]
 macro_rules! assert_errno {
-    ($s:expr, $( $i:expr ),+,) => {
-        assert_errno!($s, $( $i ),+)
-    };
-    ($s:expr, windows => $i:expr, $( $rest:expr ),+) => {
+    ($s:expr, windows => $i:expr, $( $rest:tt )+) => {
         let e = $s;
         if $crate::TESTCONFIG.errno_expect_windows() {
             assert_errno!(e, $i);
         } else {
-            assert_errno!(e, $($rest),+, $i);
+            assert_errno!(e, $($rest)+, $i);
         }
     };
-    ($s:expr, unix => $i:expr, $( $rest:expr ),+) => {
+    ($s:expr, unix => $i:expr, $( $rest:tt )+) => {
         let e = $s;
         if $crate::TESTCONFIG.errno_expect_unix() {
             assert_errno!(e, $i);
         } else {
-            assert_errno!(e, $($rest),+, $i);
+            assert_errno!(e, $($rest)+, $i);
         }
     };
     ($s:expr, $( $i:expr ),+) => {