66 lines
1.9 KiB
JavaScript
66 lines
1.9 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var hasNames = require('../');
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test('named functions', function (t) {
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function f() {} // eslint-disable-line func-style
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var g = function h() {};
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t.equal(typeof hasNames, 'function', 'is a function');
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t.equal(hasNames(), f.name === 'f' && g.name === 'h', 'functions have names or not as expected');
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t.end();
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});
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var oDP = Object.defineProperty;
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if (oDP) {
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try {
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oDP({}, 'a', { value: 1 });
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} catch (e) {
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oDP = null;
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}
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}
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test('functionsHaveConfigurableNames', function (t) {
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t.equal(typeof hasNames.functionsHaveConfigurableNames, 'function', 'is a function');
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if (hasNames()) {
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var fn = function f() {};
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if (oDP) {
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try {
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oDP(fn, 'name', { configurable: true, value: 'foo' });
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} catch (e) {}
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if (fn.name === 'f') {
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t.equal(hasNames.functionsHaveConfigurableNames(), false, 'function names are not configurable');
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} else if (fn.name === 'foo') {
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t.equal(hasNames.functionsHaveConfigurableNames(), true, 'function names are not configurable');
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} else {
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t.fail('functions have names, but something surprising has happened. Please report this!');
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}
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} else {
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t.equal(hasNames.functionsHaveConfigurableNames(), false, 'function names are not configurable');
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}
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} else {
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t.equal(hasNames.functionsHaveConfigurableNames(), false, 'functions do not have names');
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}
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t.end();
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});
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test('boundFunctionsHaveNames', function (t) {
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t.equal(typeof hasNames.boundFunctionsHaveNames, 'function', 'is a function');
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var fn = function f() {};
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if (typeof fn.bind !== 'function') {
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t.equal(hasNames.boundFunctionsHaveNames(), false, 'bound functions do not have names, because .bind does not exist');
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} else if (hasNames()) {
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t.equal(hasNames.boundFunctionsHaveNames(), fn.bind().name !== '', 'bound functions have names');
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} else {
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t.equal(hasNames.boundFunctionsHaveNames(), false, 'bound functions do not have names, because none do');
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}
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t.end();
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});
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