Learn white box test case design from simple to deep

Case design method of white box test

The goal is

1. Know the concept and application scenario of white box testing method

2. Tell me about the white box test methods

3. Be able to use various logic coverage methods to design white box test cases

4. Be able to use the basic path method to design white box test cases

Basic introduction of white box test

What is a white box test

The characteristics of white box test

White box test design method

Test design method —— Logical coverage

Logical coverage ：
It realizes the coverage of the program by traversing the logical structure of the program .
coverage ：
It is a measure of test integrity .


Test design method —— Statement override

Statement override ： Design test cases , Make every statement in the program be executed at least once
Time .

for example ：

There are... In the case code 4 Executable statement
Design test cases and execute 3 strip , The statement coverage is 3/4=75%

Test design method —— Determine coverage

Determine coverage ： Also called branch coverage , Design test cases , Make every judgment in the program “ really ” and “ false ” Are executed at least once . namely ： Each branch in the program executes at least once .

for example ：
There is a judgment in the case code 2 individual , The verdict 4 individual

Design test cases and execute 3 Branches , Branch coverage is 3/4=75%

Test design method —— Conditional coverage

** Conditional coverage ：** Design test cases , So that each condition in the decision takes the true value at least once , Once take a false value .

for example ：

There is a judgment in the case code 2 individual , Conditions 3 individual , Conditional results 6 individual

Design test cases and execute 5 Two conditional results , The conditional coverage is 5/6=83%


Test design method —— Determine conditional coverage

** Determine conditional coverage ：** Design test cases , Make the judgment result of each judgment in the tested program （ True and false ） At least once , meanwhile , Possible values of each logical condition （ True and false ） And be satisfied at least once . That is to satisfy at the same time 100% Determine coverage and 100% Criteria for conditional coverage .

for example ：

There is a judgment in the case code 2 individual , Conditions 3 individual , The verdict 4 individual , Conditional results 6 individual

Design test cases and execute 3 A decision result ,5 Two conditional results , The determination condition coverage is ：（3+5）/（4+6）=80%

Test design method —— Conditional combination covering

Conditional combination covering ： Design test cases , Make all possible combinations of condition results in each decision in the tested program execute at least once .

for example ：

There is a judgment in the case code 2 individual , Conditions 3 individual （ determine 1 Yes 2 Conditions , determine 2 Yes 1 Conditions ）, determine 1 The combination of conditions is 4 individual , determine 2 The combination of conditions is 2 individual

Design test cases and execute 5 A combination of conditions , The conditional combination coverage is ：5/（4+2）=83%


Test design method —— Path coverage

Path coverage ：
Design test cases , Covering all possible paths in the program .

for example ：
There are... In the case code 4 Paths
Design test cases and execute 3 Paths , Path coverage is 3/4=75%

Test design method —— Logical coverage

Test design method —— Basic path testing

Basic path testing ：
Based on the program control flow diagram , By analyzing the loop complexity of the program , Export the collection of basic executable paths , So as to design test cases

Basic path test method steps ：



（2） Calculate the loop complexity of the program
There are three ways ：
The number of regions in the flow graph corresponds to the complexity of the ring .

Given flow graph G The cyclomatic complexity of V(G), Defined as V(G)=E-N+2,E Is the number of edges in the flow diagram ,N Is the number of nodes in the flow graph . The figure below ：V(G)=10-8+2

Given flow graph G The cyclomatic complexity of V(G), Defined as V(G)=P+1,P It's a flow chart G Determine the number of nodes in . The figure below ：V(G)=3+1

summary
It is mainly used in the unit test stage
First static 、 Post dynamic
Design use cases generally use basic path testing , Key modules use a variety of coverage standards

Software testing learning roadmap details

The first stage A functional test

Pre school guidance ： Learn the content of this stage , The whole process function test solution 、Web Automated testing solutions 、 Data separation solution 、 Automated test reporting solutions 、 Log collection solution .

1.2022 The whole net starts 、 The most suitable software for novices is the introduction to the actual combat tutorial ！

Really from entry to mastery , Contains the foundation + Project practice , The actual operations of all cases are illustrated with pictures and texts , Truly realize a complete set of customs clearance ！

software test 2022 The latest video tutorial , Introduction to software testing basics to project practice （ Covering the fundamentals of software testing + Actual combat of the dark horse headline project ）

2. From beginning to mastery of software testing

Software testing is a process of auditing or comparing the actual output with the expected output . The classic definition of software testing is ： Operate the program under specified conditions , To find program errors , Measuring software quality , And to evaluate whether it can meet the design requirements . This course consists of 5 God , Record for zero basic white . A necessary course for the introduction of zero Foundation .

Software testing from entry to mastery _ Basic course of software testing

3. Linux System 2 Get started

This video contains Linux Operating system introduction 、Linux Common commands 、vi Editor . Learn and master the contents of this stage , Can have Linux Project construction capacity .

Linux System operation tutorial 2 Get started linux Project structures,

4. software test MySQL Database knowledge intensive + Project practice

This video contains data installation , Data table operation 、 Data manipulation - Additions and deletions 、 Conditions of the query 、 Sort 、 Aggregate functions 、 grouping 、 Pagination 、 Link query 、 Self correlation 、 Subquery 、 Subquery drill . Learn the content of this course , Can have the ability of database verification ; It can also be fast 、 Master the operation of database addition, deletion, modification and query in a standardized way .

Software test engineer must MySQL database ,mysql Elaborate on the system + Practice after class

The second stage Python Programming

Pre school guidance ： Learn the content of this stage , Can grasp Python grammar , Ability to program ; Be able to establish programming thinking and object-oriented programming thinking ; Can master UnitTest Framework management test cases .

10 Heaven plays Python software test

Learn the content of this stage , Can grasp Python grammar , Ability to program ; Be able to establish programming thinking and object-oriented programming thinking ; Can master UnitTest Framework management test cases .

Python Automatic test tutorial ,python From foundation to UnitTest Framework management test cases

The third stage UI automation

Pre school guidance ：ui Automation is generally divided into web Automation and App automation , It accounts for a large proportion in the field of automated testing , Regular use .

1. software test web Automated test elaboration and actual combat

This course will teach you to build Web Automated and mobile automated test environments ; master Web Automated test process and scripting ; Master the positioning method of elements in mobile automation testing 、 Element operation and gesture operation ; Have a good command of ADB Tool use ; master PO The design idea of pattern , And can encapsulate the page ; Master the implementation of data-driven ; Be able to flexibly use automation related technologies in practical projects .

software test web automated testing ,Web Automated process elaboration and mobile automated test environment

2. Zero foundation entry mobile automation ——Appium frame

This course will explain in detail Appium frame ,Appium It's an open source 、 Cross platform automated testing framework , The framework applies to Native Application、Mobile Web Application or Hybrid Application Automated testing .

Zero foundation entry mobile automation test ——Appium frame

3. Easily teach you to use Appium Conduct IOS Real machine automated testing

This course , Present the steps and precautions of environmental installation to the trainees , Simulator to real machine practice , They all demonstrate and explain . rich content , Vivid image , After learning, you can complete IOS Actual operation environment .

Easily teach you to use Appium Conduct IOS Real machine automated testing

The fourth stage Interface automation

Pre school guidance ： Interface testing is the most frequently used part of all automated testing applications . This stage is divided into 14 Three parts will be explained in detail .

Interface test elaboration + A practical course of mental health communication

This tutorial will cover HTTP,Postman,Pymysql,requests library , Integrate UnitTes,Dubbo And so on , At last, the project practice of this stage is carried out with the intelligent health project .

4 Day play interface test , Interface focus full analysis + The actual combat of Chuanzhi health project （ contain requests library , Integrate UnitTes,Dubbo And so on ）

The fifth stage Performance testing

Pre school guidance ： Performance testing belongs to the category of advanced testing , It's very helpful for salary promotion , This video explains how to build a performance test environment ,JMeter Tool use , Performance test monitoring 、 Analysis and tuning methods .

4 Day quick start performance test

This video passes the performance test, basic theory and JMeter Learning tools ; Through the actual combat of the light mall project , Take the students to master the performance test demand analysis 、 Performance test plan 、 Test case design 、 Test script development 、 Performance monitoring 、 Performance analysis and tuning 、 Performance test report summary .

A full set of performance testing tutorials ,4 Day quick start performance test + Project mall actual combat （ contain JMeter Tools etc. ）

Phase 6 Comprehensive projects strengthen

Pre school guidance ： Through wechat applet 、 The financial project is a comprehensive and enhanced functional test of two practical projects 、 The interface test 、 Performance testing .

1. Wechat applet automatic test practice

This video covers : Basic introduction to wechat applet 、Ego Introduction to wechat business project 、Ego Wechat project deployment 、Ego Wechat applet plan 、Ego Micro quotient applet design 、Ego Micro quotient applet execution summary 、Ego Wechat applet interface test 、 Continuous integration .

Software testing wechat applet automatic testing practice

2. software test 4 Finish the financial project in days

This video explains the function test solution of financial project 、 Real project test experience solution 、 Complex business interface test solution Interface encryption and decryption test solution 、 Data separation solution Continuous integration solutions 、 Automated test reporting solutions 、 High concurrency test solution .

software test 4 Day quick fix financial project function test practical tutorial