func-deleglate

Function arguments validate and call chainning

Usage

npm install func-delegate --save

describe("func-delegate",function(){describe("#normal-only-type",function(){varadd=function(a,b){returna+b;};add=delegate(add,[{name: 'num1',type: Number},{name: 'num2',type: Number}]);it("Type assert",function(done){assert.ok(addinstanceofFunction,'处理后的仍然是一个函数');assert.ok(add.num1instanceofFunction,'接收参数的函数 num1');assert.ok(add.num2instanceofFunction,'接收参数的函数 num2');done();});it("exec assert",function(done){assert.equal(3,add(1,2),'正常执行');assert.equal(3,add.num1(1).num2(2).exec(),'链式调用');done();});it("Exception assert",function(done){assert.throws(function(){add(1,'2');},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';},'Num2 is string');assert.throws(function(){add.num2('2').num1(1).exec();},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';},'链式调用 num2 is string')assert.throws(function(){add.num1(1).num2('2').exec();},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';},'链式调用 num2 是 string, 顺序无关')done();});});describe("#validate allowNull",function(){varadd=function(a,b,sqrt){varsum=a+b;if(sqrt===true){returnMath.sqrt(sum);}else{returnsum;}};add=delegate(add,[{name: 'num1',type: Number},{name: 'num2',type: Number},{name: 'sqrt',type: Boolean,allowNull: true}]);it("type assert",function(done){assert.ok(addinstanceofFunction,'处理后的仍然是一个函数');assert.ok(add.num1instanceofFunction,'num1 是接收参数的函数');assert.ok(add.num2instanceofFunction,'num2 是接收参数的函数');assert.ok(add.sqrtinstanceofFunction,'sqrt 是接收参数的函数');done();});it("exec assert",function(done){assert.equal(3,add(1,2),'普通调用，缺失 sqrt 参数');assert.equal(16,add.num1(7).num2(9).exec(),'链式执行缺失 sqrt 参数');assert.equal(4,add.num1(7).num2(9).sqrt(true).exec(),'链式执行 sqrt true');assert.equal(16,add.num1(7).num2(9).sqrt(false).exec(),'sqrt false');assert.equal(16,add.sqrt(false).num1(7).num2(9).exec(),'顺序无关');done();});it("Exception assert",function(done){assert.throws(function(){add(1,'2');},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';});assert.throws(function(){add.num2('2').num1(1).exec();},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';})assert.throws(function(){add.num1(1).num2('2').exec();},function(err){return(errinstanceofError)&&err.message==='Argument `num2` type must be `Number`';})assert.throws(function(){add.num1(1).num2(2).sqrt('hello').exec();},function(err){return(errinstanceofError)&&err.message==='Argument `sqrt` type must be `Boolean`';})done();});});describe("#validate rule and defaultValue",function(){varperson=function(name,email,age){return{name: name,email: email,age: age};};person=delegate(person,[{name: 'Name',type: String,validate: {matches: /^赵/,length: function(v){returnv.length>1&&v.length<4;}},message: 'Name must be a string, start with `赵`, lenght gt 1 and lt 4'},{name: 'email',type: String,validate: {isEmail: true}},{name: 'age',type: Number,defaultValue: 18,allowNull: true,validate: {max: 200},message: "Age must be a number, max value is 200, default is 18"}]);it("Type assert",function(done){assert.ok(personinstanceofFunction,'处理后的仍然是一个函数');assert.ok(person.NameinstanceofFunction,'Name');assert.ok(person.emailinstanceofFunction,'email');assert.ok(person.ageinstanceofFunction,'age');done()});it("exec assert",function(done){assert.deepEqual({email: '13740080@qq.com',name: '赵雄飞',age: 18},person('赵雄飞','13740080@qq.com'));assert.deepEqual({email: '13740080@qq.com',name: '赵雄飞',age: 18},person.Name('赵雄飞').email('13740080@qq.com').exec());assert.deepEqual({email: '13740080@qq.com',name: '赵雄飞',age: 36},person.Name('赵雄飞').email('13740080@qq.com').age(36).exec());done()});it("Exception assert",function(done){assert.throws(function(){person('王方','223251686@qq.com')},function(err){return(errinstanceofError)&&err.message==='Name must be a string, start with `赵`, lenght gt 1 and lt 4'});assert.throws(function(){person('赵导耳机','223251686@qq.com')},function(err){return(errinstanceofError)&&err.message==='Name must be a string, start with `赵`, lenght gt 1 and lt 4'});assert.throws(function(){person.Name('王方').email('223251686@qq.com').exec();},function(err){return(errinstanceofError)&&err.message==='Name must be a string, start with `赵`, lenght gt 1 and lt 4'})assert.throws(function(){person.Name('赵星梦').email('223251686').exec();},function(err){return(errinstanceofError)&&err.message==='`email` validate failure: isEmail'})done();});});describe("#iterator validate",function(){varlib=function(books){return{books: books,size: books.length};};lib=delegate(lib,[{name: 'books',type: Array,iterator: {name: {type: String,allowNull: false,validate: {length: [1,20]},message: '书名必填是字符串，长度为 1 - 20'},price: {type: Number,allowNull: true,validate: {max: 300,min: 10},message: '价格选填，数字类型，最大 300， 最小 10'}}}]);it("Type assert",function(done){assert.ok(libinstanceofFunction,'处理后的仍然是一个函数');assert.ok(lib.booksinstanceofFunction,'books 是接收参数的函数');assert.ok(lib.execinstanceofFunction,'exec 是执行函数');done()});it("exec assert",function(done){assert.deepEqual({books: [{name: 'JavaScript 权威指南',price: 35.26},{name: 'MySQL 性能优化'}],size: 2},lib([{name: 'JavaScript 权威指南',price: 35.26},{name: 'MySQL 性能优化'}]))assert.deepEqual({books: [{name: 'JavaScript 权威指南',price: 35.26},{name: 'MySQL 性能优化'}],size: 2},lib.books([{name: 'JavaScript 权威指南',price: 35.26},{name: 'MySQL 性能优化'}]).exec());done()});it("Exception assert",function(done){assert.throws(function(){lib('hello world');},function(err){return(errinstanceofError)&&err.message==='Argument `books` type must be `Array`'},'参数类型错误');assert.throws(function(){lib([{name: []}]);},function(err){return(errinstanceofError)&&err.message==='书名必填是字符串，长度为 1 - 20'},'iterator 里类型错误');assert.throws(function(){lib.books([{name: 'Hello world',price: 'Redstone'}]).exec();},function(err){return(errinstanceofError)&&err.message==='价格选填，数字类型，最大 300， 最小 10'},'iterator 价格类型不对');assert.throws(function(){lib.books([{name: 'Hello world',price: 500}]).exec();},function(err){return(errinstanceofError)&&err.message==='价格选填，数字类型，最大 300， 最小 10'},'iterator 价格类型不对');assert.throws(function(){lib.books([{name: 'Hello world',price: 5}]).exec();},function(err){return(errinstanceofError)&&err.message==='价格选填，数字类型，最大 300， 最小 10'},'iterator 价格类型不对');assert.throws(function(){lib.books([{name: 'Hello world'},{name: []}]).exec();},function(err){return(errinstanceofError)&&err.message==='书名必填是字符串，长度为 1 - 20'},'iterator 时某些数据的类型不正确');assert.throws(function(){lib.books([{name: 'Hello world Hello world Hello world Hello world'}]).exec();},function(err){return(errinstanceofError)&&err.message==='书名必填是字符串，长度为 1 - 20'},'iterator 内书名超出长度');done();});});});