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'use strict';
require('../common');
// Tests basic functionality of util.deprecate().
const assert = require('assert');
const util = require('util');
const expectedWarnings = new Map();
// Emits deprecation only once if same function is called.
{
const msg = 'fhqwhgads';
const fn = util.deprecate(() => {}, msg);
expectedWarnings.set(msg, { code: undefined, count: 1 });
fn();
fn();
}
// Emits deprecation twice for different functions.
{
const msg = 'sterrance';
const fn1 = util.deprecate(() => {}, msg);
const fn2 = util.deprecate(() => {}, msg);
expectedWarnings.set(msg, { code: undefined, count: 2 });
fn1();
fn2();
}
// Emits deprecation only once if optional code is the same, even for different
// functions.
{
const msg = 'cannonmouth';
const code = 'deprecatesque';
const fn1 = util.deprecate(() => {}, msg, code);
const fn2 = util.deprecate(() => {}, msg, code);
expectedWarnings.set(msg, { code, count: 1 });
fn1();
fn2();
fn1();
fn2();
}
process.on('warning', (warning) => {
assert.strictEqual(warning.name, 'DeprecationWarning');
assert.ok(expectedWarnings.has(warning.message));
const expected = expectedWarnings.get(warning.message);
assert.strictEqual(warning.code, expected.code);
expected.count = expected.count - 1;
if (expected.count === 0)
expectedWarnings.delete(warning.message);
});
process.on('exit', () => {
assert.deepStrictEqual(expectedWarnings, new Map());
});