Testing Embedded System: Do you have the GuTs for it

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Testing Embedded System Do you have the GuTs for
it?

• Author Vincent Encontre
• Presented by Veerawan Sarbua
• Fall 2004

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Outline

• Intro (Testing Embedded System)
• Issues Specific To Embedded Systems
• Effects these issues have on Testing Process and
  Tools
• Embedded System Testing Tools
• Conclusion/Summary/Analysis

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Introduction

• What is GuTs?
• Granule Under Test A system element that has
  been isolated from its environment for the
  purpose of testing.

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What is Testing?

• Disciplined process to evaluate
• application behavior
• performance
• robustness

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What is an Embedded System?

• Any computer system hidden in a product.
• Any software system that must be designed on a
  platform different from the platform on which the
  system is intended to be deployed.

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Examples

• Cell Phones, PDAs, Refrigerators, Microwaves,
• Watches, Navigation Systems, Airbag Control,
  Traffic Lights, etc.

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Issues Affecting Embedded System

• Separation App. Dev Exec Platform
• Large Variety of Platforms
• Tight Resources Timing Constraints
• Lack of Visual Modeling Use
• Emerging Quality Certification Standards

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Separation App Development and Execution Platform

• The product is tailored for the end user.
• Provision of access to the execution platform
  from the development platform.
• Access includes
• Test case information download
• Test execution remote monitoring
• Test results and observation upload

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Large Variety of Platforms

• Source-Code Instr Vs Object-Code Instr
• Closely integrated into the corresponding IDEs
• Highly flexible Adaptation to new architectures
  in record time

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Tight Resources Timing Constraints

• Lesser of two evils A difficult trade off
• Test Harness
• Timing Accuracy
• Host-target Communication

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Lack of Widespread Use of Visual Modeling

• Embedded developers like to code!
• Challenge in enabling the developers to design
  test cases in the preferred environment
• Usage of test template generators API
• Benefit
• Drawback

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Emerging Quality and Certification Standards

• Safety Critical Systems
• RTCAs DO-178B
• Five levels of Criticality
• Most Critical is level-A equipment
• Includes very precise steps for making sure
  level-A equipment is safe enough.

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Testing Tools

• Rational Test Real Time
• VectorCAST
• Message Magic
• Reactis Tester
• TestQuestPro

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Conclusion

• Main Ideas
• Why article was chosen?
• Relevance To Testing
• Parting Thought

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Do you have the GuTs for it?