From 667812a297a538863695c20bf5d8228301298db5 Mon Sep 17 00:00:00 2001 From: David Sherret Date: Wed, 13 Jul 2022 11:16:42 -0400 Subject: fix(cli): synchronize async stdio/file reads and writes (#15092) Fixes a regression where async writes and reads could get out of order. --- cli/tests/testdata/run/stdin_read_all.ts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 cli/tests/testdata/run/stdin_read_all.ts (limited to 'cli/tests/testdata/run/stdin_read_all.ts') diff --git a/cli/tests/testdata/run/stdin_read_all.ts b/cli/tests/testdata/run/stdin_read_all.ts new file mode 100644 index 000000000..d683a2bf6 --- /dev/null +++ b/cli/tests/testdata/run/stdin_read_all.ts @@ -0,0 +1,17 @@ +const encoder = new TextEncoder(); + +const pending = []; + +// do this a bunch of times to ensure it doesn't race +// and everything happens in order +for (let i = 0; i < 50; i++) { + const buf = new Uint8Array(1); + pending.push( + Deno.stdin.read(buf).then(() => { + return Deno.stdout.write(buf); + }), + ); +} + +await Promise.all(pending); +await Deno.stdout.write(encoder.encode("\n")); -- cgit v1.2.3