Three Ways to Reduce Product Delivery Risk and to Lower Software Lifecycle Costs

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1 Three Ways to Reduce Product Delivery Risk and to Lower Software Lifecycle Costs Jeffrey Fortin Product Manager for VectorCAST V

2 Why does quality matter? Two Examples 2

3 Why does quality matter? Code Complexity Major auto manufacturer loses first acceleration lawsuit, must pay $3 million Source: Bloomberg 10/24/13 10:25 am ET Punitive damages deal 3

4 Why does quality matter? Release Readiness Lack of Backup Software Prompts Recall for Major Auto Manufacturer Source: NHTSA CAMPAIN NUMBER 16V113000, February 26,

5 Testing is Fundamental to Quality Why do we test? Does the code do what we expect? Time to find out is before you ship To see if we are done or ready to ship Use as a diagnostic tool Keep the development on track To lower the cost by reducing waste and improving efficiency 5

6 Testing is Fundamental to Quality Cost of Fixing Defects in the Software Development Lifecycle 6

7 Testing is Fundamental to Quality Can we use testing to save time and money? Testing is not a tax on your software development cost Developing tests early yields a net savings of time and money Important to have well-defined requirements so the tests add value Quality is a team effort Testing early returns the greatest value Test-Driven Development offers real advantages over waterfall testing 7

8 Test Activities and the Software Development Process Waterfall Testing PROCESS A TYPICAL WATERFALL PROCESS The waterfall model is a sequential (non-iterative) design process, used in software development, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation and maintenance. START REQUIREMENTS THE RESULT Poor code quality and less code coverage, putting your product/brand at risk. DESIGN TEST CASES COMPLETE CODE TEST DEPLOY FINISH 8

9 Test Activities and the Software Development Process Test-Driven Development (TDD) PROCESS B TEST-DRIVEN DEVELOPMENT The test-driven development methodology centers around the creation of tests before programmers write each piece of code for a software project - requiring that a project be divided into small iterations, each of which produces a deliverable unit. Test-driven development differs from other approaches to testing primarily in that it involves creating tests before the program code itself is written. This forces the developer to think about test cases based on the interface, and not based on the design of the code. TEST CASES COMPLETE THE RESULT Better quality, more reliable code that performs better over time saving overall resources. START REQUIREMENTS DESIGN CODE DEPLOY CONTINUOUS TESTING 9

10 10 An ounce of prevention is worth a pound of cure.

11 VectorCAST Unit Test Traditional Waterfall Testing Source Code Test Harness Real Dependents Test Driver Stubbed Dependents Real Dependents 11 Unit Under Test

12 VectorCAST Unit Test VectorCAST and TDD Source Code Interface Definitions Test Harness Real Dependents Test Driver Stubbed Dependents Real Dependents 12 Unit Under Test

13 VectorCAST Unit Test Test Driven Development workflow Test Harness Build VectorCAST Test Cases Test Pass? Y N Y N Test Pass? Write Application Code 13

14 VectorCAST Unit Test TDD in VectorCAST 14

15 Testing Considerations Think about the FIRST Principle when you develop your test Fast: run tests quickly Independent: no tests depend on others, so you can run any test in any order Repeatable: run N times, get same result Self-checking: test can automatically detect if passed Timely: written about the same time as code under test. For TDD tests come before code. 15

16 Testing Considerations Multi Configuration or Variant Testing Audi Configuration BMW Configuration 16

17 Testing Considerations Specialized Test 17

18 Testing Best Practices Baseline and Regression Testing 18

19 Summary Summary Your brand depends on the quality of your software Company Brand Personal Brand Quality and Testing go hand-in-hand Unit Testing completes your testing scope TDD adds guardrails to your code development Unit testing forms the basis for regression and baseline testing 19

20 Questions and Answers!? 20

21 For more information about Vector and our products please visit Call your local Vector office Vector Informatik GmbH. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V