Mbt using rhpsody_ANGUS TECHNOLOGIES

®

IBM Software Group

© 2011 IBM Corporation

Model Based Testing using Rhapsody

Presented BySuneel SantharamSenior Product Consultant

http://www.ibm.com/software/rational

IBM Software Group | Rational softwareIBM Software Group | Rational software

Development Process is Evolving…

t1960

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ASM

C, C++, J

MDD

MBT


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Traditional testing methodologies are insufficient80% of development costs are spent identifying and fixing defects

$80/defect * $240/defect* $960/defect* $7,600/defect*

Requirements Phase Development phase Released Product QA/Testing phase*Source: 2008 GBS Industry standard study

Defect cost derived in assuming it takes 8 hrs to find, fix and repair a defect when found in code and unit test. Defect FFR cost for other phases calculated by using the multiplier on a blended rate of $80/hr

HW/SW integrationTest

InducedErrors

Development OperationIntegration

Repair

CostDefects

Introduced

Defects

Found


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Why using Model-Based Development and Test?

Model-based specifications areExecutable

– early validation and verification of the designs against requirements

Visual

– improved maintainability and communication

Model-driven TestingEnables early and repeated testingBugs are found early; hence easier to fix with less costEasy to cross-link requirements, model, code and test data and to

synchronize this continuously

– Required for safety standards, like ISO DIS 26262, DO-178B/C, etc.

High degree of automation possible

– Enables parallel development and test of embedded software


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IBM Rational Rhapsody TestConductor Add OnModel Based Testing with Rational Rhapsody

Visual test definition for improved collaboration

Automated test execution, monitoring and test architecture creation

Early validation of requirements during systems engineering

Automate unit and regression testing helping improve software quality

Requirementscapture & analysis

Systemsanalysis & design

Systemacceptance

(Sub-)System integration & test

Moduleintegration & test

SW design

SW implementation& unit test

Mod

el B

ased

Tes

ting

Ensure Correctness

Implementation

Model B

ased Testing

Ensure Correctness

Specification & Design


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Requirements, Design, Test Traceabililty

Key Enablers of Model Based Testing

Visualize Test Cases

Automate Testing Tasks

Design level debugging

Achieve Quality by

Design

Reporting Testing Results

& Coverage

Integrated Design & Test Environment

Automate Test Cases Generation


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Design Level Debugging

Push-Button Execution to quickly debug the model The best way to minimize defects

early! Debugging at the design level! Can execute simultaneously with

code level debugger! Host level Debugging Target based execution

Design level debugging


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Capture test cases with UML

Based on OMG’s standard UML Testing Profilie (www.omg.org)

Specify test cases visually for better communication across teams

Creating code tests cases or importing Cunit/Cpp unit tests also possible

Visualize Test Cases

Sequence Diagram Test CaseSequence Diagram Test Case Flowchart Test CasesFlowchart Test Cases Statechart Test CaseStatechart Test Case


Integrated Design and Test Environment Manage test cases within Rational Rhapsody

Common Browser for design and test information Syncs information to maintain consistency between design and

test

Apply model based testing to external code Visualize interfaces in Rhapsody

Design ArtifactsDesign Artifacts

Test ArtifactsTest ArtifactsTest Execution ReportsTest Execution Reports

Integrated Design & Test Environment


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Automate Quality

Automatically create test architecture Creates a System Under Test (SUT), test components and test context

Apply model based testing to external code Code is developed outside of Rhapsody

Visualize code interfaces in Rhapsody and apply model based testing

Automatically Created Test ArchitectureAutomatically Created Test Architecture

Automate Testing Tasks


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Model Driven Test GenerationIBM Rhapsody ATG

Offers Structural / Coverage Testing Generates Test cases based on the “detailed” design

Automatically generates test cases with high coverage of the design Model coverage: Covers states, transitions, operations, event generation Code coverage: Generates all relevant combinations of inputs for MC/DC

Comments: Users can always choose to manually create test cases to address special needs Consistent with the UML Testing profile



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Design for Testability – Model Driven Test Generation

ATG (automatic test generation) offers model-driven test generation (consistent with the emerging UML testing profile)

Generates test cases with high coverage of the model

Covers states, transitions, operations, generation of events

Covers all relevant combinations of inputs for MC/DC analysis

Model and MC/DC coverage – required for DO-178B/ED12B

Identifies cases for potentially dead portions of the model

Test cases can be exported and reused (as sequence diagrams and XMI to Rational Rhapsody TestConductor Add-on/ third-party tools for execution on target)



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Requirements-driven testing

Quick definition and execution of model and requirement-aware tests Unit testing and regression testing Reuse design scenarios as test cases

Requirement change impact and analysis Know which part of the model or which tests are affected by changing requirements

Pass/fail results can be synchronized with RM tool



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Model Based Test Spans the Development Lifecycle

Integrated traceability from requirements to design to test cases

Manage execution of test cases and results reports using Rational Quality Manager

Mitigate project risks with continuous QA statistics

System Functional Analysis and

Architectural Design

Software Design and

Implementation

DOORS

Team Concert

Quality Manager

Rhapsody Designer for Systems Engineers

Rhapsody Developer

Team Concert

Configuration & Change Mgmt

Release Management

RequirementsDefinition &Management

Test Management

Model DrivenTesting



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Requirements to Test Results Coverage

Automated reporting of test resultsRequirement to test coverage tableTest Coverage resultsComplete test results in the reports

Reporting Testing Results

& Coverage


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iPLONSmarter solar power solutions

What’s smart? Remote management and control

of photovoltaic systems Collection and analysis of power

consumption data

Smarter business outcomes Savings of approximately €10,000 per product

due to 25% defect reduction

Reduced development time for a new product line by 60% (five months down to two months)

How Rational enables smarter products Model driven development to accelerate reuse

of subsystems and software

Model driven testing to improve quality and reduce product development cost

“Rational Rhapsody enables our system engineers and software developers

to improve productivity, quality and communication by abstracting

complex designs graphically, automating the development

process and finding defects early.”


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EWE Group – BTC Embedded Systems AGSmarter energy metering for sustainable energy supply

What’s smart? Real time visualization of energy usage

Empowering consumers with information to help reduce their energy consumption

Enables consumers to save costs and reduce peak energy loads

Smarter business outcomes On time delivery of high quality, robust system Consumers reduced energy costs by 10% typically

EWE recognized with environmental and innovation leadership awards

How Rational enables smarter products Model-based development manages the complexity of

developing an interconnected system Model Driven Testing helps improve quality and reduce

product development costs

“Rational Rhapsody with TestConductor solution provided all the needed features,

functions and workflows to manage complexity and automate testing for on time and high quality delivery of our trio

Smart Box Meter system “


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Ensure Success with Rational

Process and methodology

• Process framework workshops

• Rational Harmony family of Best Practices and Processes

• Process training

Implementation services

• Adoption quick starts

• Deployment support

• Project architecture workshops

• Project management

• Planning support

• Escalation/risk mitigation

Training and mentoring

• Product familiarity

• Product expertise and specialization

• Technology transfer

• Adoption mentoring

• e-Learning

Technical services

• Measured Capability Improvement Framework (MCIF)

• Product optimization and customization

• Tool configuration


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© Copyright IBM Corporation 2011. All rights reserved. The information contained in these materials is provided for informational purposes only, and is provided AS IS without warranty of any kind, express or implied. IBM shall not be responsible for any damages arising out of the use of, or otherwise related to, these materials. Nothing contained in these materials is intended to, nor shall have the effect of, creating any warranties or representations from IBM or its suppliers or licensors, or altering the terms and conditions of the applicable license agreement governing the use of IBM software. References in these materials to IBM products, programs, or services do not imply that they will be available in all countries in which IBM operates. Product release dates and/or capabilities referenced in these materials may change at any time at IBM’s sole discretion based on market opportunities or other factors, and are not intended to be a commitment to future product or feature availability in any way. IBM, the IBM logo, Rational, the Rational logo, Telelogic, the Telelogic logo, and other IBM products and services are trademarks of the International Business Machines Corporation, in the United States, other countries or both. Other company, product, or service names may be trademarks or service marks of others.

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