101 lines
2.3 KiB
JavaScript
Vendored
101 lines
2.3 KiB
JavaScript
Vendored
var arity0 = require('./0'),
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arity1 = require('./1'),
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arity2 = require('./2'),
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arity3 = require('./3'),
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arity4 = require('./4'),
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arity5 = require('./5'),
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arityN = require('./N'),
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spy = require('sinon').spy(),
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expect = require('expect.js');
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function createArray(l) {
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var arr = [];
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for (var i = 0; i < l; i++) {
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arr.push(i);
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}
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return arr;
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}
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function hasArity(wrapped, fn, l) {
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var arr = createArray(l);
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expect(wrapped).to.be.a('function');
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expect(wrapped.length).to.be.eql(l);
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wrapped.call(null, arr);
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expect(fn.calledWith.call(fn, arr)).to.be.ok();
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}
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describe('arity-function', () => {
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describe('#arity0', () => {
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it('should return a function with length 0', () => {
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var spy0 = arity0(spy);
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hasArity(spy0, spy, 0);
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});
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});
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describe('#arity1', () => {
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it('should return a function with length 1', () => {
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var spy1 = arity1(spy);
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hasArity(spy1, spy, 1);
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});
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});
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describe('#arity2', () => {
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it('should return a function with length 2', () => {
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var spy2 = arity2(spy);
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hasArity(spy2, spy, 2);
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});
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});
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describe('#arity3', () => {
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it('should return a function with length 3', () => {
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var spy3 = arity3(spy);
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hasArity(spy3, spy, 3);
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});
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});
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describe('#arity4', () => {
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it('should return a function with length 4', () => {
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var spy4 = arity4(spy);
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hasArity(spy4, spy, 4);
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});
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});
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describe('#arity5', () => {
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it('should return a function with length 5', () => {
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var spy5 = arity5(spy);
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hasArity(spy5, spy, 5);
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});
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});
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describe('#arityN', () => {
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it('should return a function with length N', () => {
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var spy0 = arityN(spy, 0);
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hasArity(spy0, spy, 0);
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var spy1 = arityN(spy, 1);
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hasArity(spy1, spy, 1);
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var spy2 = arityN(spy, 2);
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hasArity(spy2, spy, 2);
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var spy3 = arityN(spy, 3);
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hasArity(spy3, spy, 3);
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var spy4 = arityN(spy, 4);
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hasArity(spy4, spy, 4);
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var spy5 = arityN(spy, 5);
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hasArity(spy5, spy, 5);
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var spyX = arityN(spy, undefined);
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hasArity(spyX, spy, 0);
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spyX = arityN(spy, null);
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hasArity(spyX, spy, 0);
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var newFn = arityN(function(a,b,c,d,e,f,g,h,i,j,k){ return true; }, 9);
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expect(newFn.length).to.be.eql(11);
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expect(newFn()).to.be.eql(true);
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});
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});
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});
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