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'use strict';
const common = require('../common');
const assert = require('assert');
const Readable = require('stream').Readable;
{
// First test, not reading when the readable is added.
// make sure that on('readable', ...) triggers a readable event.
const r = new Readable({
highWaterMark: 3
});
r._read = common.fail;
// This triggers a 'readable' event, which is lost.
r.push(Buffer.from('blerg'));
setTimeout(function() {
// we're testing what we think we are
assert(!r._readableState.reading);
r.on('readable', common.mustCall(function() {}));
});
}
{
// second test, make sure that readable is re-emitted if there's
// already a length, while it IS reading.
const r = new Readable({
highWaterMark: 3
});
r._read = common.mustCall(function(n) {});
// This triggers a 'readable' event, which is lost.
r.push(Buffer.from('bl'));
setTimeout(function() {
// assert we're testing what we think we are
assert(r._readableState.reading);
r.on('readable', common.mustCall(function() {}));
});
}
{
// Third test, not reading when the stream has not passed
// the highWaterMark but *has* reached EOF.
const r = new Readable({
highWaterMark: 30
});
r._read = common.fail;
// This triggers a 'readable' event, which is lost.
r.push(Buffer.from('blerg'));
r.push(null);
setTimeout(function() {
// assert we're testing what we think we are
assert(!r._readableState.reading);
r.on('readable', common.mustCall(function() {}));
});
}
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