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test: improve assert messages in stream-pipe-await-drain-manual-resume #16884

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test: improve assert messages in stream-pipe-await-drain-manual-resume #16884

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10 changes: 7 additions & 3 deletions test/parallel/test-stream-pipe-await-drain-manual-resume.js
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Original file line number Diff line number Diff line change
Expand Up @@ -30,11 +30,13 @@ readable.once('pause', common.mustCall(() => {
assert.strictEqual(
readable._readableState.awaitDrain,
1,
'awaitDrain doesn\'t increase'
'Expected awaitDrain to equal 1 but instead got ' +
`${readable._readableState.awaitDrain}`
);
// First pause, resume manually. The next write() to writable will still
// return false, because chunks are still being buffered, so it will increase
// the awaitDrain counter again.

process.nextTick(common.mustCall(() => {
readable.resume();
}));
Expand All @@ -43,7 +45,8 @@ readable.once('pause', common.mustCall(() => {
assert.strictEqual(
readable._readableState.awaitDrain,
1,
'.resume() does not reset counter'
'.resume() should not reset the counter but instead got ' +
`${readable._readableState.awaitDrain}`
);
// Second pause, handle all chunks from now on. Once all callbacks that
// are currently queued up are handled, the awaitDrain drain counter should
Expand All @@ -64,7 +67,8 @@ writable.on('finish', common.mustCall(() => {
assert.strictEqual(
readable._readableState.awaitDrain,
0,
'awaitDrain not 0 after all chunks are written'
'awaitDrain should equal 0 after all chunks are written but instead got' +
`${readable._readableState.awaitDrain}`
);
// Everything okay, all chunks were written.
}));