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Dynamic code analysis vs static analysis

Code writing is the most creative and satisfying part of creating software from scratch. However, to make sure the code works, it needs to be analyzed. For this we have the Dynamic Code Analysis and its static analysis. Which of the two types of analysis is more convenient?

What is dynamic code analysis?

Before starting to differentiate between the two types of analysis, it is convenient to make it clear that code analysis is a code review process through which it is intended to evaluate said code. This evaluation involves the search for operating problems of the same code and aims to improve its operation.

This code analysis can be performed in two ways: a dynamic code analysis or a static code analysis can be carried out.

  • Static analysishas the advantage over dynamic analysis that it is done without executing the code. As it does not require this execution, the static analysis allows to detect errors in a very early phase of the writing. This saves a lot of time in later stages of development. The most serious problem that it offers instead, is that it can throw positives that are not and whose falsehood will only be seen during the execution of the code.
  • Dynamiccode analysis is performed while the code is running. It is slower and needs a complete testing process. However, it allows you to see many errors that are hidden in a static analysis.

Testing process for dynamic code analysis

Both types of code analysis mentioned support full testing processes. There are different types of them specially designed for dynamic code analysis and for static analysis. In the latter case, a good documentation review and maintenance process is recommended . Above all, for the benefit of developers working on large projects. In this type of work, changes are the order of the day and, without adequate documentation, it is impossible to maintain an overview of the project.

Types of tests for dynamic code analysis

  1. Black box: The objective of these tests is to verify that the outputs are correct. No attention is paid to the way in which these outputs are made. A modular independence is taken into account for an easier implementation of each module. This makes it easier to address the fault.
  2. White box: focus on procedural failures relating to inputs. The method usually consists of making all the possible inputs to obtain a certain output. This type of testing must be modified every time the implementation changes in the project.

Whatever type of testing is performed, dynamic code analysis requires a QA team to perform it . The independence between the developers and the test team must be total to avoid failures during the process. At Go4 IT Solutions we ensure this disciplinary independence in all our projects. But if you want to see for yourself, you just have to contact us.