1 files changed, 11 insertions, 0 deletions
diff --git a/test/cli.zig b/test/cli.zig
index c0702fa54c..dedea67a59 100644
--- a/test/cli.zig
+++ b/test/cli.zig
@@ -28,6 +28,8 @@ pub fn main() !void {
     const zig_exe = try fs.path.resolve(a, &[_][]const u8{zig_exe_rel});
 
     const dir_path = try fs.path.join(a, &[_][]const u8{ cache_root, "clitest" });
+    defer fs.cwd().deleteTree(dir_path) catch {};
+    
     const TestFn = fn ([]const u8, []const u8) anyerror!void;
     const test_fns = [_]TestFn{
         testZigInitLib,
@@ -174,4 +176,13 @@ fn testZigFmt(zig_exe: []const u8, dir_path: []const u8) !void {
     const run_result3 = try exec(dir_path, true, &[_][]const u8{ zig_exe, "fmt", dir_path });
     // both files have been formatted, nothing should change now
     testing.expect(run_result3.stdout.len == 0);
+
+    // Check UTF-16 decoding
+    const fmt4_zig_path = try fs.path.join(a, &[_][]const u8{ dir_path, "fmt4.zig" });
+    var unformatted_code_utf16 = "\xff\xfe \x00 \x00 \x00 \x00/\x00/\x00 \x00n\x00o\x00 \x00r\x00e\x00a\x00s\x00o\x00n\x00";
+    try fs.cwd().writeFile(fmt4_zig_path, unformatted_code_utf16);
+
+    const run_result4 = try exec(dir_path, true, &[_][]const u8{ zig_exe, "fmt", dir_path });
+    testing.expect(std.mem.startsWith(u8, run_result4.stdout, fmt4_zig_path));
+    testing.expect(run_result4.stdout.len == fmt4_zig_path.len + 1 and run_result4.stdout[run_result4.stdout.len - 1] == '\n');
 }