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const { create } = Object;
QUnit.test('AggregateError', assert => {
assert.isFunction(AggregateError);
assert.arity(AggregateError, 2);
assert.name(AggregateError, 'AggregateError');
assert.looksNative(AggregateError);
assert.true(new AggregateError([1]) instanceof AggregateError);
assert.true(new AggregateError([1]) instanceof Error);
assert.true(AggregateError([1]) instanceof AggregateError);
assert.true(AggregateError([1]) instanceof Error);
assert.same(AggregateError([1], 'foo').message, 'foo');
assert.same(AggregateError([1], 123).message, '123');
assert.same(AggregateError([1]).message, '');
assert.deepEqual(AggregateError([1, 2, 3]).errors, [1, 2, 3]);
assert.throws(() => AggregateError([1], Symbol('AggregateError test')), 'throws on symbol as a message');
assert.same(({}).toString.call(AggregateError([1])), '[object Error]', 'Object#toString');
assert.same(AggregateError.prototype.constructor, AggregateError, 'prototype constructor');
// eslint-disable-next-line no-prototype-builtins -- safe
assert.false(AggregateError.prototype.hasOwnProperty('cause'), 'prototype has not cause');
assert.true(AggregateError([1], 1) instanceof AggregateError, 'no cause, without new');
assert.true(new AggregateError([1], 1) instanceof AggregateError, 'no cause, with new');
assert.true(AggregateError([1], 1, {}) instanceof AggregateError, 'with options, without new');
assert.true(new AggregateError([1], 1, {}) instanceof AggregateError, 'with options, with new');
assert.true(AggregateError([1], 1, 'foo') instanceof AggregateError, 'non-object options, without new');
assert.true(new AggregateError([1], 1, 'foo') instanceof AggregateError, 'non-object options, with new');
assert.same(AggregateError([1], 1, { cause: 7 }).cause, 7, 'cause, without new');
assert.same(new AggregateError([1], 1, { cause: 7 }).cause, 7, 'cause, with new');
assert.same(AggregateError([1], 1, create({ cause: 7 })).cause, 7, 'prototype cause, without new');
assert.same(new AggregateError([1], 1, create({ cause: 7 })).cause, 7, 'prototype cause, with new');
let error = AggregateError([1], 1, { cause: 7 });
assert.deepEqual(error.errors, [1]);
assert.same(error.name, 'AggregateError', 'instance name');
assert.same(error.message, '1', 'instance message');
assert.same(error.cause, 7, 'instance cause');
// eslint-disable-next-line no-prototype-builtins -- safe
assert.true(error.hasOwnProperty('cause'), 'cause is own');
error = AggregateError([1]);
assert.deepEqual(error.errors, [1]);
assert.same(error.message, '', 'default instance message');
assert.same(error.cause, undefined, 'default instance cause undefined');
// eslint-disable-next-line no-prototype-builtins -- safe
assert.false(error.hasOwnProperty('cause'), 'default instance cause missed');
});
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