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'use strict';
const common = require('../common');
const assert = require('assert');
const { isDisturbed, isErrored, Readable } = require('stream');
function noop() {}
function check(readable, data, fn) {
assert.strictEqual(readable.readableDidRead, false);
assert.strictEqual(isDisturbed(readable), false);
assert.strictEqual(isErrored(readable), false);
if (data === -1) {
readable.on('error', common.mustCall(() => {
assert.strictEqual(isErrored(readable), true);
}));
readable.on('data', common.mustNotCall());
readable.on('end', common.mustNotCall());
} else {
readable.on('error', common.mustNotCall());
if (data === -2) {
readable.on('end', common.mustNotCall());
} else {
readable.on('end', common.mustCall());
}
if (data > 0) {
readable.on('data', common.mustCallAtLeast(data));
} else {
readable.on('data', common.mustNotCall());
}
}
readable.on('close', common.mustCall());
fn();
setImmediate(() => {
assert.strictEqual(readable.readableDidRead, data > 0);
if (data > 0) {
assert.strictEqual(isDisturbed(readable), true);
}
});
}
{
const readable = new Readable({
read() {
this.push(null);
}
});
check(readable, 0, () => {
readable.read();
});
}
{
const readable = new Readable({
read() {
this.push(null);
}
});
check(readable, 0, () => {
readable.resume();
});
}
{
const readable = new Readable({
read() {
this.push(null);
}
});
check(readable, -2, () => {
readable.destroy();
});
}
{
const readable = new Readable({
read() {
this.push(null);
}
});
check(readable, -1, () => {
readable.destroy(new Error());
});
}
{
const readable = new Readable({
read() {
this.push('data');
this.push(null);
}
});
check(readable, 1, () => {
readable.on('data', noop);
});
}
{
const readable = new Readable({
read() {
this.push('data');
this.push(null);
}
});
check(readable, 1, () => {
readable.on('data', noop);
readable.off('data', noop);
});
}
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