Software Test
Software Test
What is a Software-Test?
A software test is the systematic examination of an application to find errors and ensure that it meets functional and non-functional requirements. Different test types check different aspects of the software.
Selection of Test Types
Unit Test
Tests individual functions in the source code.
Component Test
Checks individual components as a whole.
Integration Test
Tests how different components work together.
Functional Test
Checks whether specified functions work correctly in functional and technical terms.
End2End Test
Checks whether the overall system fulfils the specified functions in its complete structure.
Acceptance Test
Checks whether changes meet the specifications and can be accepted.
Exploratory Test
Attempts to solve problems with the product without a fixed agenda.
Performance Test
Checks how efficiently the product solves problems in terms of time and resources.
Smoke Test
Checks whether the product can be started at all. The name comes from electrical engineering: the test failed if smoke arose.
Penetration Test
A structured examination for security vulnerabilities, for example in integrated dependencies or the implementation of design patterns.
The list presented here is not exhaustive and shows how the focus can be placed during a test session and which aspects can be paid particular attention to.
I am happy to help with the selection of suitable methods and/or the implementation.
Why are software tests important?
Improved Software Quality
Structured tests detect and rectify errors early, before they reach production.
Reduced Risk
Software errors can cause high costs and damage a company's image. Tests minimise these risks and support a seamless user experience.
Customer Satisfaction
Error-free, efficient software improves the user experience and increases customer satisfaction.
Increased Efficiency
Regular tests train testers and optimise repeatable processes. Fixing bugs earlier can reduce these costs by up to 80%.
Procedure of a Software-Test
A structured approach ensures that software tests are effective:
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Test Planning
Define the approach, methods, tools, time frame, resources and test environment, then communicate them to the departments involved.
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Test Case Definition
Create test cases based on requirements and experience that can be executed manually or automatically.
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Test Execution
Carry out tests manually and/or automatically and document the results.
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Bug Fixing
Analyse and document errors; rectify them in collaboration with the development team.
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Regression Test
Repeat individual tests to ensure that bug fixes have not produced new errors.
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Conclusion and Reporting
Analyse software quality and, depending on the defined standards, recommend a release—or advise against it.
Best Practices in Software Tests
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Test Early
The earlier tests start in development, the lower the cost of bug fixes. This approach is often called “shift left”.
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Automate Where Sensible
Automated tests save time and improve coverage, but they are not a panacea and cannot replace thorough quality assurance.
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Clear Test Cases and Documentation
Good test cases are traceable, reproducible and documented. Otherwise, troubleshooting and coordination become time-consuming.
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Use the Correct Test Level
Anything a unit test can cover should be tested there. Expensive end-to-end tests belong to interactions between system areas, not boundary-value testing.
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Continuous Improvement
Review and optimise test processes regularly to increase efficiency and effectiveness.
Challenges when doing Software Tests
Incomplete Requirements
Unclear specifications lead to inaccurate tests.
Collaborate closely with stakeholders to clarify requirements.
Time and Budget Constraints
There is often not enough time or money for comprehensive testing.
Prioritise the most important test cases, automate critical tests and make management aware of the scope that is really necessary.
Test Data Management
Realistic test data is often difficult to obtain.
Generate test data or anonymise real data. When using real data, always involve the person responsible for data protection to avoid legal problems.
Complexity
Large and distributed systems make testing more difficult.
Test modularly and integrate continuously with CI/CD pipelines while using the correct test pyramid level.
Conclusion
Frequently Asked Questions
My team tests itself - Why should I outsource the test?
First of all, developers are not specialized testers, so they do not find everything that a specialist would find. Furthermore, development time is the scarcest resource and should therefore not be invested lightly. Finally, four eyes see more than two, which can also be applied to development.
What is tested during a Software Test?
This depends entirely on the desired focus. As a rule, functionality and visual appeal are tested first, followed by the test for borderline cases. In addition, aspects such as safety and performance or accessibility can be focused on.
What do I need to prepare before a Software-Test?
In addition to accounts that cover all cases to be tested, an isolated test environment is required. Tests can be carried out on the productive instance, but this is highly risky - especially for booking systems.
How long does a Software Test take?
This depends on various factors such as the desired level of detail and the complexity of the product to be tested. As a rule, a good result can be achieved within a day, perhaps even faster if you know the product well.
Is an external Software Test worth the money?
By uncovering not only technical problems, but also other potential uses, a software test can even increase revenue.