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'use strict';
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const cbTypeError = /^TypeError: "callback" argument must be a function$/;
function test(cb) {
return function() {
// fs.stat() calls makeCallback() on its second argument
fs.stat(__filename, cb);
};
}
// Verify the case where a callback function is provided
assert.doesNotThrow(test(function() {}));
process.once('warning', common.mustCall((warning) => {
assert.strictEqual(
warning.message,
'Calling an asynchronous function without callback is deprecated.'
);
invalidArgumentsTests();
}));
// Passing undefined/nothing calls rethrow() internally, which emits a warning
assert.doesNotThrow(test());
function invalidArgumentsTests() {
assert.throws(test(null), cbTypeError);
assert.throws(test(true), cbTypeError);
assert.throws(test(false), cbTypeError);
assert.throws(test(1), cbTypeError);
assert.throws(test(0), cbTypeError);
assert.throws(test('foo'), cbTypeError);
assert.throws(test(/foo/), cbTypeError);
assert.throws(test([]), cbTypeError);
assert.throws(test({}), cbTypeError);
}
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