小编R B*_*nan的帖子

我正在试图弄清楚如何让Jest在我的环境中工作,而我遇到的问题是这个项目在node_modules的子目录中有一堆自定义组件.

我收到这个错误:

    FAIL  src/mantle/tools/searchindexer/apps/DataMover/js/components/__test__/GenericJobsTable.test.jsx
      ? Test suite failed to run

        /Users/rob/repos/mesa/ui/node_modules/iggy-common/components/IggyTable.jsx:1
        ({"Object.":function(module,exports,require,__dirname,__filename,global,jest){import React, {PropTypes} from "react";
                                                                                                 ^^^^^^
        SyntaxError: Unexpected token import

          at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/ScriptTransformer.js:289:17)
          at Object. (src/mantle/tools/searchindexer/apps/DataMover/js/components/JobsTable/GenericJobsTable.jsx:7:18)
          at Object. (src/mantle/tools/searchindexer/apps/DataMover/js/components/__test__/GenericJobsTable.test.jsx:5:25)

    Test Suites: 1 failed, 1 total
    Tests:       0 total
    Snapshots:   0 total
    Time:        2.4s
    Ran all test suites matching "GenericJobsTable".

我运行jest ^20.0.3,并babel-jest ^20.0.3在7.7.1的NodeJS.

在我的package.json中,这是我拥有的jest配置部分:

      "jest": {
        "verbose": true,
        "transform": {
          "^.+\\.jsx$": "babel-jest"
        },
        "moduleFileExtensions": [
          "js",
          "jsx"
        ],
        "moduleDirectories": [
          "node_modules"
        ]
      }

我将我的根.babelrc定义为: …

任何人都可以提供有关如何返回数组项子集的建议吗？例如，假设我有一个文档集合（类似于下面的示例），其中包含一个简单的 _id 键和一个包含对象数组的键。

我想找到所有 _id 和符合简单条件的匹配对象：

// campaigns
{
  "_id" : "Fred's C25K",
  "campaignData" : [
    {
      "date" : "2015-06-17",
      "source" : "nike"
    },
    {
      "date" : "2015-06-17",
      "source" : "reebok",
    },
    {
      "date" : "2015-06-12",
      "source" : "nike"
    },
    {
      "date" : "2015-06-14",
      "source" : "adidas"
    },
  ]
},
{
  "_id" : "Mike's Marathon",
  "campaignData" : [
    {
      "date" : "2015-06-17",
      "source" : "nike"
    }
  ]
},
{
  "_id" : "Jacob's Jamboree",
  "campaignData" : [
    {
      "date" : "2015-06-17", …

知道为什么我可以让我的AVPlayerViewController类播放内容,但无法让它显示播放控件吗？播放器按预期加载内容,但就是这样.

在我的MediaPlayerViewController.m类中,我有:

#pragma mark - Player
- (void)setupPlayer{

    // Sample URLs to use either a local file or streaming URL
    NSURL *url = [[NSBundle mainBundle] URLForResource:@"Besan" withExtension:@"mp4"];
    //url = [NSURL URLWithString:@"http://www.youtube.com/watch?v=qcI2_v7Vj2U"];

    // Create an instance of the AVPlayer object
    self.player = [AVPlayer playerWithURL:url];


    // Keep an eye on the status of our player
    [self.player addObserver:self forKeyPath:@"status" options:0 context:nil];
}

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{

    if (object == self.player && [keyPath isEqualToString:@"status"]) {
        if (self.player.status == AVPlayerStatusFailed){
            NSLog(@"AVPlayer …