如何使用firebase进行单元测试？

我对单元测试非常陌生,所以像模拟模块这样的东西令人困惑.

在native native中,有一个使用firebase数据库的组件,它返回给定ref的数据:

// when the data of the current user is available
userRef.child(user.uid).on('value', snap => {
  // check of val() consists data
  if (snap.val()) {
    let
      authUser = snap.val(),
      isPatient = authUser.type === "Patient",
      // We update the state object so that the component is re-rendered
      this.setState({
        // the ID of the current user
        authUserUID: user.uid,
        // the type of the current user (i.e. Doctor or Patient)
        authUserType: snap.val().type,
        // title of the dashboard based on the current user …

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javascript unit-testing firebase jestjs react-native

Doe*_*Doe

2019 02-25

5
推荐指数

2
解决办法

2181
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如何有效地过滤对象中的对象？

这个问题在SO中已经提出过很多次了，但是都是指对象数组。

就我而言，我想过滤对象的对象。

假设我有这个对象：

"Users": {
  "w14FKo72BieZwbxwUouTpN7UQm02": {
    "name": "Naseebullah Ahmadi",
    "userType": "Patient",
    "writePermission": false
  },
  "SXMrXfBvexQUXfnVg5WWVwsKjpD2": {
    "name": "Levi Yeager",
    "userType": "Patient",
    "writePermission": false
  },
  "VoxHFgUEIwRFWg7JTKNXSSoFoMV2": {
    "name": "Ernest Kamavuako",
    "userType": "Doctor",
    "writePermission": true
  },
  "hFoWuyxv6Vbt8sEKA87T0720tXV2": {
    "name": "Karla Stanlee",
    "userType": "Doctor",
    "writePermission": true
  }
}

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我想过滤这个，这样我就可以得到以下内容：

"UsersCustom": {
  "w14FKo72BieZwbxwUouTpN7UQm02": {
    "name": "Naseebullah Ahmadi",
    "userType": "Patient",
    "writePermission": false
  },
  "SXMrXfBvexQUXfnVg5WWVwsKjpD2": {
    "name": "Levi Yeager",
    "userType": "Patient",
    "writePermission": false
  }
}

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