mirror of https://github.com/jkjoy/sunpeiwen.git
77 lines
2.2 KiB
JavaScript
77 lines
2.2 KiB
JavaScript
var inspect = require('../');
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var test = require('tape');
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var arrow = require('make-arrow-function')();
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var functionsHaveConfigurableNames = require('functions-have-names').functionsHaveConfigurableNames();
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test('function', function (t) {
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t.plan(1);
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var obj = [1, 2, function f(n) { return n; }, 4];
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t.equal(inspect(obj), '[ 1, 2, [Function: f], 4 ]');
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});
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test('function name', function (t) {
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t.plan(1);
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var f = (function () {
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return function () {};
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}());
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f.toString = function toStr() { return 'function xxx () {}'; };
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var obj = [1, 2, f, 4];
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t.equal(inspect(obj), '[ 1, 2, [Function (anonymous)] { toString: [Function: toStr] }, 4 ]');
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});
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test('anon function', function (t) {
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var f = (function () {
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return function () {};
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}());
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var obj = [1, 2, f, 4];
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t.equal(inspect(obj), '[ 1, 2, [Function (anonymous)], 4 ]');
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t.end();
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});
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test('arrow function', { skip: !arrow }, function (t) {
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t.equal(inspect(arrow), '[Function (anonymous)]');
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t.end();
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});
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test('truly nameless function', { skip: !arrow || !functionsHaveConfigurableNames }, function (t) {
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function f() {}
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Object.defineProperty(f, 'name', { value: false });
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t.equal(f.name, false);
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t.equal(
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inspect(f),
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'[Function: f]',
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'named function with falsy `.name` does not hide its original name'
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);
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function g() {}
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Object.defineProperty(g, 'name', { value: true });
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t.equal(g.name, true);
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t.equal(
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inspect(g),
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'[Function: true]',
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'named function with truthy `.name` hides its original name'
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);
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var anon = function () {}; // eslint-disable-line func-style
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Object.defineProperty(anon, 'name', { value: null });
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t.equal(anon.name, null);
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t.equal(
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inspect(anon),
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'[Function (anonymous)]',
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'anon function with falsy `.name` does not hide its anonymity'
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);
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var anon2 = function () {}; // eslint-disable-line func-style
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Object.defineProperty(anon2, 'name', { value: 1 });
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t.equal(anon2.name, 1);
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t.equal(
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inspect(anon2),
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'[Function: 1]',
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'anon function with truthy `.name` hides its anonymity'
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);
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t.end();
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});
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