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denoland-deno/tests/node_compat/test/parallel/test-stream-readable-hwm-0.js
Matt Mastracci f5e46c9bf2
chore: move cli/tests/ -> tests/ (#22369)
This looks like a massive PR, but it's only a move from cli/tests ->
tests, and updates of relative paths for files.

This is the first step towards aggregate all of the integration test
files under tests/, which will lead to a set of integration tests that
can run without the CLI binary being built.

While we could leave these tests under `cli`, it would require us to
keep a more complex directory structure for the various test runners. In
addition, we have a lot of complexity to ignore various test files in
the `cli` project itself (cargo publish exclusion rules, autotests =
false, etc).

And finally, the `tests/` folder will eventually house the `test_ffi`,
`test_napi` and other testing code, reducing the size of the root repo
directory.

For easier review, the extremely large and noisy "move" is in the first
commit (with no changes -- just a move), while the remainder of the
changes to actual files is in the second commit.
2024-02-10 20:22:13 +00:00

37 lines
1.1 KiB
JavaScript

// deno-fmt-ignore-file
// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// Taken from Node 18.12.1
// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
'use strict';
const common = require('../common');
// This test ensures that Readable stream will call _read() for streams
// with highWaterMark === 0 upon .read(0) instead of just trying to
// emit 'readable' event.
const assert = require('assert');
const { Readable } = require('stream');
const r = new Readable({
// Must be called only once upon setting 'readable' listener
read: common.mustCall(),
highWaterMark: 0,
});
let pushedNull = false;
// This will trigger read(0) but must only be called after push(null)
// because the we haven't pushed any data
r.on('readable', common.mustCall(() => {
assert.strictEqual(r.read(), null);
assert.strictEqual(pushedNull, true);
}));
r.on('end', common.mustCall());
process.nextTick(() => {
assert.strictEqual(r.read(), null);
pushedNull = true;
r.push(null);
});