Node.js启动,测试

时间:2017-08-08 16:38:04

标签: node.js

我是Node.js的新手,我对测试有疑问,我无法弄清楚问题,这是我的错误:

  

gradeTests√可以增加新的等级   ×平均成绩

     

AssertionError:NaN == 75       at Object.equal(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ lib \ types.js:83:39)       在Object.exports.Can avarage成绩(C:\ Users \ efi \ Desktop \ nodeFolder \ tests \ gradeTests.js:21:7)       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ lib \ core.js:232:20       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:168:13       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:131:25       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:165:17       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:463:34       at Object.exports.setUp(C:\ Users \ efi \ Desktop \ nodeFolder \ tests \ gradeTests.js:5:2)       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ lib \ core.js:260:35       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:458:21       在C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:163:13       在iterate(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:123:13)       at async.forEachSeries(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:139:9)       at _asyncMap(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:162:9)       at Object.mapSeries(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:152:23)       at Object.async.series(C:\ Users \ efi \ AppData \ Roaming \ npm \ node_modules \ nodeunit \ deps \ async.js:456:19)

     

失败:1/2断言失败(16ms)

这是我的文件:

var gradeBook = {

    _grades: [],
    addGrade: function(newGrade) {
       this._grades.push(newGrade); 
   },

   getCountOfGrades: function() {
        return this._grades.lenght; 
   },
   getAverage: function() {
       var total = 0;
       for(var i = 0; i < this._grades.lenght; i +=1 ) {
           total += this._grades[i];
       };
       return total / this._grades.lenght;
   },


   reset: function() {
       this._grades = [];
   }

};

exports.book = gradeBook;

var book = require("../lib/grades").book;

exports["setUp"] = function(callback) {
    book.reset();
    callback();
};

exports["Can add new grade"] = function(test) {
    book.addGrade(90);
    var count = book.getCountOfGrades();

    test.equal(count);
    test.done();
};

exports["Can avarage grades"] = function(test) {
    book.addGrade(100);
    book.addGrade(50);

    var average = book.getAverage();
    test.equal(average, 75);
    test.done();
};

1 个答案:

答案 0 :(得分:1)

您的代码中存在拼写错误,lenght应为length