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'use strict';
const common = require('../common');
const assert = require('assert');
common.expectWarning(
'DeprecationWarning',
'assert.fail() with more than one argument is deprecated. ' +
'Please use assert.strictEqual() instead or only pass a message.',
'DEP0094'
);
// Two args only, operator defaults to '!='
assert.throws(() => {
assert.fail('first', 'second');
}, {
code: 'ERR_ASSERTION',
name: 'AssertionError',
message: '\'first\' != \'second\'',
operator: '!=',
actual: 'first',
expected: 'second',
generatedMessage: true
});
// Three args
assert.throws(() => {
assert.fail('ignored', 'ignored', 'another custom message');
}, {
code: 'ERR_ASSERTION',
name: 'AssertionError',
message: 'another custom message',
operator: 'fail',
actual: 'ignored',
expected: 'ignored',
generatedMessage: false
});
// Three args with custom Error
assert.throws(() => {
assert.fail(typeof 1, 'object', new TypeError('another custom message'));
}, {
name: 'TypeError',
message: 'another custom message'
});
// No third arg (but a fourth arg)
assert.throws(() => {
assert.fail('first', 'second', undefined, 'operator');
}, {
code: 'ERR_ASSERTION',
name: 'AssertionError',
message: '\'first\' operator \'second\'',
operator: 'operator',
actual: 'first',
expected: 'second'
});
// The stackFrameFunction should exclude the foo frame
assert.throws(
function foo() { assert.fail('first', 'second', 'message', '!==', foo); },
(err) => !/^\s*at\sfoo\b/m.test(err.stack)
);