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55 lines
1.5 KiB
55 lines
1.5 KiB
3 years ago
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'use strict';
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var hasSymbols = require('has-symbols')();
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module.exports = function runTests(promisify, t) {
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t.equal(typeof promisify, 'function', 'promisify is a function');
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t['throws'](
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function () { promisify(null); },
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TypeError,
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'throws on non-functions'
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);
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var yes = function () {
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var cb = arguments[arguments.length - 1];
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cb(null, Array.prototype.slice.call(arguments, 0, -1));
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};
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var no = function () {
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var cb = arguments[arguments.length - 1];
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cb(Array.prototype.slice.call(arguments, 0, -1));
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};
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var pYes = promisify(yes);
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var pNo = promisify(no);
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t.equal(typeof pYes, 'function', 'pYes is a function');
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t.equal(typeof pNo, 'function', 'pNo is a function');
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t.test('pYes is properly promisified', { skip: typeof Promise !== 'function' }, function (st) {
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st.plan(1);
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var p = pYes(1, 2, 3);
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return p.then(function (result) {
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st.deepEqual(result, [1, 2, 3], 'fulfillment: arguments are preserved');
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});
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});
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t.test('pNo is properly promisified', { skip: typeof Promise !== 'function' }, function (st) {
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st.plan(1);
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var p = pNo(1, 2, 3);
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return p.then(null, function (args) {
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st.deepEqual(args, [1, 2, 3], 'rejection: arguments are preserved');
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});
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});
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t.test('custom symbol', { skip: !hasSymbols }, function (st) {
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st.equal(Symbol.keyFor(promisify.custom), 'nodejs.util.promisify.custom', 'is a global symbol with the right key');
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// eslint-disable-next-line no-restricted-properties
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st.equal(Symbol['for']('nodejs.util.promisify.custom'), promisify.custom, 'is the global symbol');
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st.end();
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});
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};
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