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How can you design and implement test cases for electronic systems?

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Testing is a crucial part of electronic engineering, as it helps you verify the functionality, performance, and reliability of your systems. However, designing and implementing effective test cases can be challenging, especially for complex or novel systems. In this article, you will learn some basic principles and steps for creating and executing test cases for electronic systems.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
Dr. HARSHA B VANJANI

Lecturer, FE and HE in ???? UK
Dan Deveson

Strategic Wireless Expertise

1 Test Plan

Before you start writing test cases, it is essential to have a clear test plan that outlines the scope, objectives, and criteria of your testing process. This plan should include the system or component to be tested and its specifications, the test environment and equipment, the test strategy and methodology, the test schedule and resources, the test deliverables and documentation, and the test risks and mitigation measures. A test plan helps you organize and prioritize your testing activities, as well as communicate your expectations and assumptions to other stakeholders.

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Dan Deveson

Strategic Wireless Expertise
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There are two distinct types of testing: 1. Product design/validation testing, 2. Customer acceptance testing. Design/validation should exercise target systems thoroughly and include parametric, boundary, and regression tests designed to support the product design throughout its lifetime. Design/validation testing ought best be conducted by third parties (not the product principal designers), however this is often not practical; provisions should be made to support either case. Customer acceptance tests demonstrate/validate high-level features and functions required and delivered on a contractual basis. Acceptance tests may embody multiple products, either bought-in/integrated, or developed, to provide a specified target system.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
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I would emphasize that the test plan serves as a roadmap for the entire testing process. It ensures that testing is conducted systematically and efficiently, helping in identifying and resolving issues early.

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2 Test Case Design

Creating test cases requires concise, clear, and consistent instructions for defining the input, output, and expected results of a test. To design test cases, you can use techniques such as equivalence partitioning, boundary value analysis, decision tables, state transitions, or use cases. Additionally, you can use tools and frameworks like MATLAB, LabVIEW, or Arduino to automate or simplify your test case design. Overall, these methods can help cover the main functionality and features of the system or component.

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Dr. HARSHA B VANJANI

Lecturer, FE and HE in ???? UK
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Hardware Testing is an essential part that ensures that every component of the system should work as its specific requirement. The testing program technique double-checks all related aspects.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
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While you've mentioned several techniques (equivalence partitioning, boundary value analysis, etc.), consider providing a brief explanation or an example of each technique to make it more informative for readers who may not be familiar with them.

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3 Test Case Implementation

When implementing test cases, you must prepare the test environment and equipment, execute the test cases, and record the results. This includes setting up the test environment and equipment according to the plan and specifications, connecting the system or component to the test equipment, running the test cases in a logical order, comparing the actual results with the expected ones, and documenting any issues or defects in a test report or log. Additionally, you should perform regression testing to guarantee that any changes or fixes do not affect existing functionality.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
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I would expand on the concept of regression testing and explain that it involves retesting previously validated functionalities to ensure that new changes or fixes haven't introduced unintended side effects. It needs to be mentioned its important role in maintaining the system's overall integrity.

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4 Test Case Review

After you have implemented your test cases, it is important to review them to evaluate their effectiveness, completeness, and quality. This review can help you check if the test cases meet the test objectives and criteria, as well as identify any gaps, redundancies, or errors in the test cases. Additionally, you can improve the test cases by adding, modifying, or deleting them as needed. Furthermore, this review allows you to validate the test results and confirm the system or component functionality. Finally, you can report the test findings and recommendations to the relevant stakeholders. To automate or simplify your test case review, consider using tools and frameworks such as JUnit, TestNG, or PyTest.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
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Test case review is a critical quality assurance step in the testing process. It must be highlighted that it ensures the effectiveness and thoroughness of your testing efforts. The review process isn't just about validation but also about continuous improvement. The feedback from reviews can lead to enhancements in test cases, making them more robust and efficient for future testing cycles.

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5 Test Case Maintenance

Test cases are not static, but dynamic, meaning they must be able to adapt to the changes and updates of the system or component. To ensure their accuracy and efficiency, you must maintain your test cases by updating them to reflect new or modified requirements, reusing or reorganizing them to avoid duplication or inconsistency, archiving or deleting those that are no longer relevant or valid, and backing up or storing them in a secure and accessible location. Additionally, it is important to review and improve the test cases periodically. Tools and frameworks such as Git, SVN, or Bitbucket can be used to manage and track your test case changes and versions.

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Petr Dvo?ák

#ThatKiCADguy :: Content creator :: HW designer :: (He/Him)
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Various version control tools like Git, SVN, or Bitbucket can streamline test case management. Those version control tools play essential role in tracking changes, enabling collaboration, and maintaining a history of test case revisions.

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6 Test Case Best Practices

Designing and implementing test cases for electronic systems effectively requires following some best practices. It's important to define clear and measurable test objectives and criteria, as well as design test cases that are simple, specific, and realistic. Moreover, you should ensure that the test cases are repeatable, traceable, and verifiable. Additionally, review test cases to make sure they are relevant, accurate, and complete. Furthermore, maintain test cases that are updated, organized, and documented. Lastly, use tools and frameworks that are appropriate, reliable, and compatible. Following these best practices will ensure your test cases are aligned with the system or component requirements and expectations while also making your testing process systematic, efficient, and reliable.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can you design and implement test cases for electronic systems?

1

2

3

4

5

6

7

1 Test Plan

2 Test Case Design

3 Test Case Implementation

4 Test Case Review

5 Test Case Maintenance

6 Test Case Best Practices

7 Here’s what else to consider

Electronic Engineering

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How can you design and implement test cases for electronic systems?

1

2

3

4

5

6

7

1 Test Plan

2 Test Case Design

3 Test Case Implementation

4 Test Case Review

5 Test Case Maintenance

6 Test Case Best Practices

7 Here’s what else to consider

Electronic Engineering

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