What is weak network testing? Why should weak network test be carried out? How to conduct weak network test? "Suggested collection"

Hello everyone , I meet you again , I'm your friend, Quan Jun .

What is weak network test ?

Because in the era of mobile Internet , In addition to wired connection, the network form , also 2G/3G/4G/Wifi/5G And a variety of mobile phone network connections . First, add some extra 5G Knowledge ;2 Minutes to know what is 5G.

It ended not long ago MWC 2018 On ,5G It has become a hot topic in the world , And at home 5G Their attention is also abnormally high . actually , And 2G、3G、4G comparison , In our country 5G The layout of this aspect is no later than that of other countries ; And the three major Chinese operators are in China 5G The role in development is crucial , So they are 5G The rhythm of the game basically determines the whole of China 5G Step forward .

As a qualified tester , The scene that needs extra attention is much more than disconnection 、 Network failure and so on . We also need to define the data of weak network , The meaning defined by different applications is different and unclear , Not only the lowest rate of each type of network should be considered , We also need to combine business scenarios and application types to divide . According to the characteristics of mobility , Generally, it is lower than 2G All of them are weak nets , Can also be 3G Divided into weak networks . besides , Weak signal Wifi It is usually included in the weak network test scenario .

So why do you want to test the weak network ?

It's true , Take a medical treatment suitable for low resource environment IT For system projects , And its usage scenarios are mainly in some 2G In the network environment ,3G There are few nets , And the stability is also relatively poor . therefore , This kind of AP To complete the delivery of the application , It must run in the weak network state or even in the absence of network state .

How to do weak network test ?

First , As long as the weak network environment is built , Simulate a weak network environment . There are two ways through software and hardware . The software mode uses the simulated network parameters to configure the weak network environment , We can achieve our goal . You can also choose a third party , such as ,Charles , Network link Conditioner . In all kinds of network software , Mainly for bandwidth 、 Packet loss 、 Delay, etc. to simulate the weak network environment . But the way is caused by certain drawbacks , Not very close to weak network environment , Want to be closer to the weak network environment , For example, most special tests , It is more likely to assist in testing through hardware , But this way will become very troublesome , It's all through 「 Raspberry pie 」 Web services help build ! If there are some situations that cannot be simulated , You can only move to the elevator manually 、 Subway and other places with weak signals . add , The software method is low cost and easy to operate .

The idea of weak net test

Weak network function test ：2G/3G/4G、 High delay 、 High loss package

No network state test ： Network disconnection function test 、 Local data storage

User experience Focus on ： response time 、 Page rendering & Overtime copywriting & Over time reconnection 、 Safety and large flow risk

Network switching test ：Wifi—-4G/3G/2G—– No network multi state switching

Weak network function test

This part is mainly in various non wifi Function test under network environment , At the same time, it simulates the abnormal network environment with high delay and high packet loss for robustness testing . Pay attention to the response time of web pages 、 Whether the page rendering is complete and consistent . The network environment with high delay and high packet loss needs to be simulated by tools , stay windows It can be used in the environment fiddler and network emulator for windows toolkit To simulate the , stay mac You can use Charles and Xcode The self-contained development environment network exception simulation tool . The use of tools is specifically introduced in the tools section .

It is suggested that the whole function test cases should be tested in the weak network environment , The functions of the same module can be tested under multiple network conditions . The problems found in this part may be ： Page image can't be loaded in weak network environment ( Image loading logic needs to be optimized )、 The page board structure that needs a template is chaotic ( The loading of template files in weak network environment needs to be optimized )、 The response time of the page is long and there is no display ( Page display logic optimization 、 Try again mechanism join ) etc. .

Network switching test

This part is mainly to switch several different network scenarios , Include wifi-2G/3G/4G、wifi- No net 、2G/3G/4G-wifi、2G/3G/4G- No net 、 No net -2G/3G/4G、 No net -wifi etc. . Mainly focus on the display and interaction of the page , Especially the weak network to wifi,wifi In the case of weak networks , Whether there will be a page crash And the confusion of the display 、session Is it consistent 、 Request heap processing, etc .

User experience focuses on

The purpose of weak network test is to ensure the user experience as much as possible , Key points of concern include ：

1) Page response time is acceptable , Concerns include hot start 、 Cold start time 、 Page switching 、 Front and rear station switching 、 First time , First screen time, etc .

2) Whether the page rendering is completed consistently .

3) Whether the overtime copy meets the definition , Whether the abnormal information is displayed normally .

4) Whether there is timeout reconnection .

5) Safety angle ： Will it happen dns hijacked 、 land ip Change frequently 、 Single sign on exception, etc .

6) High traffic event risk ： Whether it will be updated under the weak network apk package 、 Download files and other large traffic action .

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