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denoland-deno/tests/node_compat/test/parallel/test-stream3-cork-end.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

98 lines
2.4 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';
require('../common');
const assert = require('assert');
const stream = require('stream');
const Writable = stream.Writable;
// Test the buffering behavior of Writable streams.
//
// The call to cork() triggers storing chunks which are flushed
// on calling end() and the stream subsequently ended.
//
// node version target: 0.12
const expectedChunks = ['please', 'buffer', 'me', 'kindly'];
const inputChunks = expectedChunks.slice(0);
let seenChunks = [];
let seenEnd = false;
const w = new Writable();
// Let's arrange to store the chunks.
w._write = function(chunk, encoding, cb) {
// Stream end event is not seen before the last write.
assert.ok(!seenEnd);
// Default encoding given none was specified.
assert.strictEqual(encoding, 'buffer');
seenChunks.push(chunk);
cb();
};
// Let's record the stream end event.
w.on('finish', () => {
seenEnd = true;
});
function writeChunks(remainingChunks, callback) {
const writeChunk = remainingChunks.shift();
let writeState;
if (writeChunk) {
setImmediate(() => {
writeState = w.write(writeChunk);
// We were not told to stop writing.
assert.ok(writeState);
writeChunks(remainingChunks, callback);
});
} else {
callback();
}
}
// Do an initial write.
w.write('stuff');
// The write was immediate.
assert.strictEqual(seenChunks.length, 1);
// Reset the seen chunks.
seenChunks = [];
// Trigger stream buffering.
w.cork();
// Write the bufferedChunks.
writeChunks(inputChunks, () => {
// Should not have seen anything yet.
assert.strictEqual(seenChunks.length, 0);
// Trigger flush and ending the stream.
w.end();
// Stream should not ended in current tick.
assert.ok(!seenEnd);
// Buffered bytes should be seen in current tick.
assert.strictEqual(seenChunks.length, 4);
// Did the chunks match.
for (let i = 0, l = expectedChunks.length; i < l; i++) {
const seen = seenChunks[i];
// There was a chunk.
assert.ok(seen);
const expected = Buffer.from(expectedChunks[i]);
// It was what we expected.
assert.ok(seen.equals(expected));
}
setImmediate(() => {
// Stream should have ended in next tick.
assert.ok(seenEnd);
});
});