From be108c7a939407a759a009da78fd529aee140977 Mon Sep 17 00:00:00 2001
From: Pat Hickey <pat@moreproductive.org>
Date: Wed, 27 Jan 2021 18:18:12 -0800
Subject: [PATCH] will this work for platform-specific errnos? WIP

---
 .../src/bin/path_symlink_trailing_slashes.rs     |  3 ++-
 crates/test-programs/wasi-tests/src/lib.rs       | 16 ++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

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 748b8bd95d..5a63a13fb8 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
@@ -22,7 +22,8 @@ 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,
+        windows => wasi::ERRNO_NOENT,
+        wasi::ERRNO_EXIST
     );
     wasi::path_remove_directory(dir_fd, "target").expect("removing a directory");
 
diff --git a/crates/test-programs/wasi-tests/src/lib.rs b/crates/test-programs/wasi-tests/src/lib.rs
index 059d3c1ae2..7ecc77b33d 100644
--- a/crates/test-programs/wasi-tests/src/lib.rs
+++ b/crates/test-programs/wasi-tests/src/lib.rs
@@ -67,6 +67,22 @@ macro_rules! assert_errno {
     ($s:expr, $( $i:expr ),+,) => {
         assert_errno!($s, $( $i ),+)
     };
+    ($s:expr, windows => $i:expr, $( $rest:expr ),+) => {
+        let e = $s;
+        if std::env::var("ERRNO_EXPECT_WINDOWS").is_ok() {
+            assert_errno!(e, $i);
+        } else {
+            assert_errno!(e, $($rest),+, $i);
+        }
+    };
+    ($s:expr, linux => $i:expr, $( $rest:expr ),+) => {
+        let e = $s;
+        if std::env::var("ERRNO_EXPECT_LINUX").is_ok() {
+            assert_errno!(e, $i);
+        } else {
+            assert_errno!(e, $($rest),+, $i);
+        }
+    };
     ($s:expr, $( $i:expr ),+) => {
         let e = $s;
         {