What Does Code Coverage Tell Us?

What Does Code Coverage Tell Us?

Code coverage is a metric that can help you understand how much of your source is tested. It’s a very useful metric that can help you assess the quality of your test suite, and we will see here how you can get started with your projects.

How do I reduce code coverage in SonarQube?

you can exclude all the source files in your project from coverage calculations via the UI: Administration > Analysis Scope > Coverage Exclusions. A pattern value of **/*. * ought to do it for you.

Does code coverage need 100%?

Good coverage does not imply good tests
Before starting, let’s be clear. This is the most common point from 100%-coverage detractors: a covered code does not mean it’s well tested. It is better to have 50% of the project tested correctly, than 100% poorly tested. This is correct.

How does SonarQube improve code coverage?

to increase your code coverage, the suggestion is to write tests. It can be unit tests (easiest way) or other tests (Integration test, System tests) which may contribute to coverage when a tool can report coverage for these.

How do I get code coverage in SonarQube?

SonarQube itself does not calculate coverage. To include coverage results in your analysis, you must set up a third-party coverage tool and configure SonarQube to import the results produced by that tool. Below, you’ll find guidelines and resources, as well as language- and tool-specific analysis parameters.

How do I turn off code coverage in SonarQube?

you can exclude all the source files in your project from coverage calculations via the UI: Administration > Analysis Scope > Coverage Exclusions. A pattern value of **/*. * ought to do it for you.

What is code quality metrics?

Code quality metrics are a number of variables used to measure and determine if code is of high quality. Teams can then use those metrics for code review for changes, test coverage, and other actionable insights. Variables such as code complexity, portability, security, clarity, reusability, and others.

What is code quality metrics in SonarQube?

Code Smells – Total count of Code Smell issues. New Code Smells – Total count of Code Smell issues raised for the first time in the New Code period. Maintainability Rating – This (SQALE) rating given to the project is related to the value of Technical Debt Ratio. Technical Debt – Effort to fix all Code Smells.
Mar 17, 2020

What are SonarQube measures?

SonarQube measures code quality based on different metrics. The most important metric is the code coverage metric. In this case, no tests have been written, which means you have no code coverage. The cool thing about SonarQube is that it indicates the number of lines that aren’t covered by tests.
Oct 1, 2021

What are code smell issues?

Code smells are simply indications of potential breaches of code discipline and design principles. That said, it’s possible that the source of a code smell may cause cascading issues and failures over time. It is also a good indicator that a code refactoring effort is in order.

What is code smell in Java?

Martin Fowler in his book Refactoring: Improving the design of existing code defines a code smell as: A surface indication that usually corresponds to a deeper problem in the system. Refactoring is a process of improving the internal structure of our code without impacting its external behavior.

What is the difference between bug and code smell?

Bug – A coding mistake that can lead to an error or unexpected behavior at runtime. Vulnerability – A point in your code that’s open to attack. Code Smell – A maintainability issue that makes your code confusing and difficult to maintain.

What are the rules in SonarQube?

There are four types of rules:

Code Smell (Maintainability domain)

Bug (Reliability domain)

Vulnerability (Security domain)

Security Hotspot (Security domain)


How do I add a rule in SonarQube?

Adding your Rule to the Server

1

Login as an Quality Profile Administrator.

2

Go to the Rules page.

3

Select the Language for which you want to create the XPath rule.

4

Tick the Template criterion and select “Show Templates Only”

5

Look for the XPath rule template.


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What is a code smell in SonarQube?

SonarQube version 5.5 introduces the concept of Code Smell. According to Wikipedia and Robert C. Martin “Code smell, also known as bad smell, in computer programming code, refers to any symptom in the source code of a program that possibly indicates a deeper problem.
May 14, 2016

How do I run SonarQube on Linux?

Prep the Server With Required Softwares

1

Step 1: Update the server. …

2

Step 2: Install wget & unzip sudo yum install wget unzip -y.

3

Step 3: Install java 11 sudo yum install java-11-openjdk-devel -y.

4

Step 4: Login as root and execute the following commands. …

5

Step 1: Install PostgreSQL 10 repo.


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Can we run SonarQube locally?

How to setup the SonarQube in a local machine? We need Docker Desktop for Windows to setup the SonarQube local. Download and install Docker Desktop for Windows. Open the Powershell and check if the docker is installed or by running the below command.

How does SonarQube measure code coverage?

SonarQube measures code quality based on different metrics. The most important metric is the code coverage metric. In this case, no tests have been written, which means you have no code coverage. The cool thing about SonarQube is that it indicates the number of lines that aren’t covered by tests.
Oct 1, 2021

How do I get unit test coverage in SonarQube?

Build your project using MSBuild. Run your test tool, instructing it to produce a report at the same location specified earlier to the MSBuild SonarQube Runner (How to generate reports with different tools) Run the SonarScanner. MSBuild.exe end command.

What does coverage on new code mean?

Code coverage is a software testing metric that determines the number of lines of code that is successfully validated under a test procedure, which in turn, helps in analyzing how comprehensively a software is verified.

What is coverage on new code in SonarQube?

we have set 25% as the code coverage baseline for overall and new code in our Quality gate.

Can Sonar be used for code coverage?

SonarQube and JaCoCo are two tools that we can use together to make it easy to measure code coverage. They also provide an overview of the overall health of the source code by finding code duplications, bugs and other issues in the code.
Jul 18, 2022

Is SonarQube dynamic code analysis?

An Introduction on SonarQube
SonarQube is a Code Quality Assurance tool that collects and analyzes source code, and provides reports for the code quality of your project. It combines static and dynamic analysis tools and enables quality to be measured continually over time.

What is dynamic analysis code?

Dynamic code analysis involves running code and examining the outcome, which also entails testing possible execution paths of the code. Even in the most rudimentary fashion, when development teams test the code, they’re performing dynamic analysis.