Question

我在为指令编写测试时遇到此错误（使用generator-angular-module）：

的src / capitalize.js：

'use strict';

angular.module('jviotti.string', []).filter('capitalize', function() {

  return function(input) {
    return input.replace(/\w\S*/g, function(txt) {
      return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
    });
  };

});

测试/规格/ capitalize.js：

'use strict';

describe('Filter: capitalize', function () {

  // load the controller's module
  beforeEach(module('jviotti.string'));

  var capitalize;
  beforeEach(inject(function($filter) {
    capitalize = $filter('capitalize');
  }));

  it('should capitalize a string', function () {
    expect(capitalize('hello')).toBe('Hello');
  });

});

然而，当使用PhantomJS运行Karma时，我得到：

PhantomJS 1.9.2 (Mac OS X) Filter: capitalize should capitalize a string FAILED
    TypeError: Attempted to assign to readonly property.
        at workFn (/Users/jviotti/Projects/angular-string/bower_components/angular-mocks/angular-mocks.js:2107)
    TypeError: 'undefined' is not a function (evaluating 'capitalize('hello')')
        at /Users/jviotti/Projects/angular-string/test/spec/capitalize.js:14
PhantomJS 1.9.2 (Mac OS X): Executed 2 of 2 (1 FAILED) (0.1 secs / 0.017 secs)

我错过了什么？

Answer 1

改变karma.conf.js

  logLevel: config.LOG_INFO,

到

  logLevel: config.LOG_DEBUG,

和PhantomJS到Firefox，然后你会得到更详细的错误消息

Answer 2

另一种选择（在Angular 1.2.2中）是在angular-mocks.js文件中注释掉第2107行：

if(e.stack && errorForStack) e.stack +=  '\n' + errorForStack.stack;

显然在PhantomJS中，错误堆栈是只读的。

编辑：

在Angular 1.2.10+（github.com/angular/angular.js/pull/5047）中不应再出现此错误（谢谢sherlocken！）

Answer 3

我也在v1.2.5中看到了这个问题。它似乎是angular-mocks.js中的回归：https://github.com/angular/angular.js/pull/5047

您可以从此差异手动修补angular-mocks.js：https://github.com/wizardwerdna/angular.js/commit/17515763b891ea617339610fe92079cefe0efbbe

Answer 4

升级到至少1.2.10可能有所帮助，它将PhantomJS和某些其他浏览器的问题合并在一起。请参阅https://github.com/angular/angular.js/pull/5047和https://github.com/angular/angular.js/tree/v1.2.10。

Answer 5

您是否在规范顶部添加了参考js文件，如下所示

/// <reference path="../../../bower_components/angular/angular.js" />
/// <reference path="../../../bower_components/angular-route/angular-route.js" />
/// <reference path="../../../bower_components/angular-ui-router/release/angular-ui-router.js" />
/// <reference path="../../../bower_components/jasmine/lib/jasmine-core/jasmine.js" /> 
/// <reference path="../../../bower_components/jasmine/lib/jasmine-core/jasmine-html.js" />
/// <reference path="../../../bower_components/jasmine/lib/jasmine-core/boot.js" />
/// <reference path="../../../bower_components/angular-mocks/angular-mocks.js" />

注意：angular-mocks.js必须在angular.js之后和测试文件之前

TypeError：尝试分配给readonly属性

5 个答案: