Automated Software Testing using Open Source Testing Tools By Elfriede Dustin
Agenda Who is IDT State of Software Testing What is Automated Test and Re-test (ATRT) Approach to ATRT Advantage of open source ATRT and open source – Our IDE and solution ATRT Challenges
Who is IDT? IDT specializes in the design, development, and implementation of Automated Software Testing and Re-Test (ATRT) and Quality Assurance (QA) solutions Deliver turn key automated test suite Automated test strategy and identification of highest payoff areas to apply automation for your project Selection of best automation tools for your project Using your existing test cases or develop test cases for you Test results documented in requirements traceability matrix Training and pilot project implementation with companies
Who is IDT? IDT specializes in the design, development, and implementation of Automated Software Testing and Re-Test (ATRT) and Quality Assurance (QA) solutions Deliver turn key automated test suite Automated test strategy and identification of highest payoff areas to apply automation for your project Selection of best automation tools for your project Using your existing test cases or develop test cases for you Test results documented in requirements traceability matrix Training and pilot project implementation with companies • We are currently hiring Java Developers • Plus we’d like to hire 2 or 3 grad students to work for us part time ( i.e. 20 hours week ) • must be US citizen
State of Software Testing - Why ATRT? 50% or More of Overall Development Cost is Typically Spent on Testing Utilize Automated Testing Strategies and Technology to Improve Productivity and Quality Spiral / Release 4 Reduction in Test Days Spiral / Release 3 Increased Test Coverage Size & Complexity of SW Baseline Test Days Spiral / Release 2 Manual Test Days Spiral / Release 1 Automated Test Days Manual vs. Automated Test Days IDT Provides Automated Software Testing Solutions
What is ATRT? Our definition of ATRT is: Application and implementation of software technology throughout the entire Software Testing Life Cycle (STL) and QA lifecycle; with the goal to improve STL efficiencies and effectiveness
ATRT Spans the Software DevelopmentLife Cycle – Visual Modeling • Modeling and test case generation Development Tools Components Design Build Assemble Round-Trip Engineering Test Use cases
ATRT Spans the Software DevelopmentLife Cycle – Requirements • Organizes, tracks, & controls requirements • Requirements Traceability Matrix (RTM) Requirements Management and Process Automation Visual Modeling Development Tools Components
ATRT Spans the Software DevelopmentLife Cycle – Automated Test Tools • Automates test cases using vendor-provided, open-source tools or in-house development Requirements Management and Process Automation Development Tools Components Visual Modeling Development Management Execution Automated Testing Tools Automated Software Testing
ATRT Spans the Software DevelopmentLife Cycle – Integrated Suite of Tools Development Tools Components Automated Testing Tools Middleware Software Configuration Management Defect Tracking Requirements Management and Process Automation Additionally: • Middleware • Infrastructure • Defect Tracking • Configuration Management • Memory Leak Detectors • Performance Testing Tools • Documentation Tools • others Visual Modeling Infrastructure
Types of Software Test Life-cycle Support Tools Which tools are you familiar with?
Deployment Approach – Adapted ATLM • Populate Test Manager with Test Cases and Requirements • Develop Test Scripts from Test Procedures • Test Results: • Pass/Fail by Test Case • Pass/Fail Summary • Test Time Required • Identify or Develop • & Pilot • Test Manager • Test Scripts • Data Comparators • Performance Test Tools • GUI Record/Playback • Storing/Retrieving Results • Collect/Create: • Requirements • Test Cases • Test Procedures • Expected Results • Interface Specifications • System/Component • Configuration Description
Why Open Source? Advantage of Open Source: no licensing issues; i.e. license cost; maintenance; etc. easily modifiable adaptable lightweight flexibility - not tied to one vendor
ATRTs IDE - Eclipse Eclipse – this site lists all the plugins http://www.eclipse-plugins.info/eclipse/plugins.jsp?category=SCM&pager.offset=0&firstItem=1 Eclipse/TPTP – Open Source - Developed by IBM Eclipse/Test and Performance Tools Platform (TPTP) offers a common extensible framework for the following functions: Requirements Management http://sourceforge.net/projects/osrmt/ Configuration Management - Subversion Testing Tools (http://www.nabble.com/Eclipse-TPTP---Testing-Tools-f2262.html) Profiling: default Java applications, but can be extended to other apps
ATRTs IDE - Eclipse Eclipse/Test and Performance Tools Platform (TPTP) offers a common extensible framework for the following functions (cont): Static Analysis: default for C++ and Java, but can be extended to other apps Application monitoring and log analysis Build tool – ant Xml input and output - using an open source Java package http://jakarta.apache.org/ecs/ , which is a Java library that has an API for constructing and outputting XML. Test Manager – STAF/STAX
Current Test Tool Implementation – Example and Challenges Vendor-provided (Capture/Playback) Tool: Automated test tools mimic actions of the test engineer. During testing, the engineer uses the keyboard and mouse to perform some type of test or action. Testing tool captures all keystrokes and subsequent results, which are baselined in an automated test script. During test playback, scripts compare latest outputs with previous baseline. Testing tools have built-in, reusable test functions. Most test tools provide for non-intrusive testing; i.e., they interact with the “application-under-test” as if the test tool was not involved.
Current Testing Tools – Challenges (cont) In-House Software Development required: Capture/Playback tools generate hard-coded values; test scripts are not reusable, nor do they implement software development best practices right out of the box; scripts need to be modified. Capture/Playback tools don’t necessarily provide all testing features required; code enhancements are often required to meet testing needs. Capture/Playback tools are not necessarily compatible with system engineering environment, and software testing scripts need to be developed in-house. Developed testing scripts are not cross-vendor compatible, even if the same scripting language is used
Automated Test and Re-Test (ATRT) • ATRT includes a common framework comprised of re-usable software services • Open Source Software Test Automation Framework (STAF) • Provides automated test procedures, test inputs, and test results for SW components • Suitable for use by 3rd parties not associated with development of the component
What is STAX? • STAX is an automation system • With STAX you can automate and monitor your entire test environment • System/product setup • Testcase distribution • Testcase execution • Testcase results collection and analysis • STAX consists of • A programming language designed for automation • Programs written in this language are called jobs • An execution engine (similar to an interpreter for other programming/scripting languages) which manages the execution and runtime behavior of the job • A GUI application, called the STAX Monitor, which provides a dynamically updated view of your executing jobs • A tool (STAXDoc) that is used to generate documentation for your STAX jobs
STAF can run on: * Windows 95 * Windows 98 (and 98 SE) * Windows Millenium Edition * Windows NT Version 4.0 * Windows 2000 * Windows XP * Windows Server 2003 (IA32, IA64, AMD64) * Windows Vista (IA32, AMD64) * Linux (Intel32/64, AMD64, PPC32/64) * Linux on zSeries (31-bit, 64-bit) * AIX Version 188.8.131.52 or higher (32-bit, 64-bit) * Solaris (Sparc) 2.6 and higher * Solaris AMD Opteron 64-bit * HP-UX 11.00 and higher (PA-RISC, IA64 32-bit and 64-bit) * OS/400 V5R2 or higher * z/OS UNIX V1.4 and higher
STAF Internal Services DIAG Provides diagnostics services Internal ("DIAG") DELAY Provides a means to sleep a specified amount of time Internal ("DELAY") ECHO Echos back a supplied message Internal ("ECHO") FILE SYSTEM Allows you to get and copy files across the network Internal ("FS") HANDLE Provides information about existing STAF handles Internal ("HANDLE") HELP Provides Help on STAF error codes Internal ("HELP") MISC Handles miscellaneous commands such as displaying the version of STAF that is currently running Internal ("MISC") PING Provides a simple is-alive message Internal ("PING") PROCESS Allows you to start, stop, and query processes Internal ("PROCESS") QUEUE Provides a network-enabled IPC mechanism for STAF Programs Internal ("QUEUE") SEMAPHORE Provides network-enabled named event and mutex semaphores Internal ("SEM") SERVICE Allows you to list services available on a machine and to examine the Requests that have been submitted on a machineInternal ("SERVICE") SHUTDOWN Provides a means to shutdown STAF and register for shutdown Notifications Internal ("SHUTDOWN") TRACE Provides tracing information for STAF services Internal ("TRACE") TRUST Interfaces with STAF's security Internal ("TRUST") VARIABLEProvides a method for maintaining configuration and runtime data (variables) Internal ("VAR")
STAF External Services The executable code for external STAF services resides outside of STAFProc, for example in a Java jar file, a C++ DLL file, or a Rexx script file. CRON Calls into STAF services at a specified time interval External (Java) EMAIL Allows you to send email messages External (Java) EVENT Provides a publish/subscribe notification system External (Java) EVENTMANAGER Allows you to call STAF services when a specified Event occurs External (Java) HTTP Allows you to make HTTP requests which can be grouped together in a session External (Java) LOG Provides a full-featured logging facility External (C++) MONITOR Allows a testcase to publish its current running execution status for others to read External (C++) RESOURCE POOL Allows you to manage exclusive access to pools of elements, e.g. VM UserIDs or Software Licenses External (C++) STAX Provides an XML-based execution engine External (Java) ZIP Provides a means to zip/unzip/list/delete PKZip/WinZip compatible archives External (C++)
Technologies used in STAX • STAF • STAF provides the infrastructure on which STAX builds. The full power of STAF and its services is exposed for use within STAX jobs. • XML • The STAX programming language is based on XML. This provides built-in structure to your jobs, as well as providing a set of existing tools for use in constructing your jobs, such as XML (aware) editors and XSLT. • Python • The STAX programming language builds on Python to provide a rich and accessible data model • STAX's Python integration also allows you to access the wealth of existing Python libraries • Java • The STAX programming language allows you to access existing Java classes/libraries, providing another source for reuse
Automation Tasks Automation Startup System Setup Execution Monitoring Testcase Execution Synchronization Testcase Output Analysis Resource Management Testcase Cleanup Results Notification Automation Completion
End-to-End Automation with STAF and STAX Automation Startup S T A X J o b Event, EventManager, Cron <function> <parallel> <sequence> <process> <stafcmd> <testcase> <timer> <block> <loop> <message> <log> <import> <job> <iterate> <paralleliterate> <hold> <release> <terminate> System Setup FS, Process Testcase Execution Process, Monitor, Log, Variable, Queue, ResPool Testcase Output Analysis Log, Process Testcase Cleanup Process Results Notification Email, HTTP Automation Completion
Key ATRT Architecture Requirements • Support applications running on multiple computers • Support applications developed in different languages • Support applications running on different types of OS’s • Support applications which have GUI and those which do not (for example Interface testing) • Support applications which use different types of network protocols such as TCP/IP, DDS, etc • Support integration of multiple commercial testing tools from different vendors ( allowing as new or better products emerge in the market they can be utilized ) • Support testing w/o having to install ATRT on the same computers as the application under test and be able to be distributed across computers
Prototype – Proof of Concept Analysis & Display Application Display Application Display Application System Under Test Windows Based Simulation of Application Processing Messages Eggplant R/P VNC Robot R/P Simulation of Application Processing Messages ATRT Test Manager RTM Bugzilla Linux Based STAF/STAX
ATRT Prototyping Effort • Able to successfully execute ATRT for 48 hours without operator intervention • During the tests: • VNCRobot - Approximately 25,000 operator key strokes were replayed • STAF/STAX - More than 1,000,000 messages processed and verified by ATRT
Additional Requirement Pristine test environment required – automated testing tool cannot be installed on Application-Under-Test PC Eggplant – allows for remote capture/playback via VNCserver and KVM switch VNCRobot
Automated Software Testing Software testing paradox What is it?
Effective Automated Software Testing Current State: Developing software in order to test software Automate the test support development: automated IDL to code generation; test data generation (using FireEye from NIST); compare utilities; log file analyzers; Our Automated Software Testing Goal: Minimize Human interaction Possibly get on par with Hardware Automated Testing?
Hardware Testing: current state Many automated test generators for manufacturing/ logic devices, circuit testing, etc., available i.e. SEI/ATG, uMaster, etc. Automated testing without human interaction is the norm for hardware testing
Hardware vs. Software AT How is hardware testing different? Software Challenge: Changing requirements GUI interfaces Code access/availability Defects uncovered earlier in the software development lifecycle are cheaper to fix Solution flexibility required – problem dependent
Proposed solutions Focus on Reusable Components Test Data / Expected Results Interfaces Middleware Assuming code and models are available: Model based testing; automated test case generators based on models Eclipse – effective ATRT IDE Probes – see Aprobe – Code instrumentation Building self-testable components Using standard language MOF to Text to generate automate test cases GUI Testing tool ideas New tools - other Working with NIST to produce additional tools
GUI Testing Jemmy - java library to test UI http://jemmy.netbeans.org/ http://abbot.sourceforge.net/doc/overview.shtml Perl modules run via VNCServer?
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