From 4cde7fdc9a52088f8dfe3e23569d6be2faa80d0f Mon Sep 17 00:00:00 2001 From: Casper Beyer Date: Mon, 29 Jun 2020 22:44:08 +0800 Subject: feat(std/wasi): implement fd_datasync (#6556) --- std/wasi/testdata/std_fs_file_sync_data.rs | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 std/wasi/testdata/std_fs_file_sync_data.rs (limited to 'std/wasi/testdata/std_fs_file_sync_data.rs') diff --git a/std/wasi/testdata/std_fs_file_sync_data.rs b/std/wasi/testdata/std_fs_file_sync_data.rs new file mode 100644 index 000000000..f19f8e9b7 --- /dev/null +++ b/std/wasi/testdata/std_fs_file_sync_data.rs @@ -0,0 +1,15 @@ +// { "preopens": { "/scratch": "scratch" } } + +use std::io::Write; + +fn main() { + let mut file = std::fs::File::create("/scratch/file").unwrap(); + + assert!(file.write(b"Hello").is_ok()); + assert!(file.sync_data().is_ok()); + assert_eq!(std::fs::read("/scratch/file").unwrap(), b"Hello"); + + assert!(file.write(b", world!").is_ok()); + assert!(file.sync_data().is_ok()); + assert_eq!(std::fs::read("/scratch/file").unwrap(), b"Hello, world!"); +} -- cgit v1.2.3