Innovate 2014: Get an A+ on Testing Your Enterprise Applications with Rational Development and Test Environment for System z
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The document discusses IBM's Rational Development and Test Environment for System z, emphasizing its benefits for developers including offloading development tasks and improving testing flexibility. It highlights challenges faced in mainframe development, such as budget constraints and scheduling issues, and introduces features of RD&T that address these barriers. Additionally, the document outlines the use of test-driven development (TDD) in system z applications, showcasing the configuration and implementation of automated testing tools.
![• TDD is test-first software development (write unit tests before code)
• With TDD developers cycle minute-by-minute between
writing unit tests, writing code, and running unit tests [1]
• Running unit tests implies running everyone’s unit tests
• Tests should be self-checking, automated, and run after each build
• Each function of an application gets its own suite of unit tests
• Add or enhance unit tests whenever committing code
• Key element of TDD: “red, green, refactor”
[1] A Longitudinal Study of the Use of a Test-Driven Development Practice in Industry,
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.104.6319&rep=rep1&type=pdf
What is Test-Driven Development (TDD)?
Red
GreenRefactor
12](https://image.slidesharecdn.com/innovate2014cipressogates20140430-140605122605-phpapp02/85/Innovate-2014-Get-an-A-on-Testing-Your-Enterprise-Applications-with-Rational-Development-and-Test-Environment-for-System-z-13-320.jpg)
![Acknowledgements and Disclaimers
© Copyright IBM Corporation 2012. All rights reserved.
– U.S. Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
– Please update paragraph below for the particular product or family brand trademarks you mention such as WebSphere, DB2,
Maximo, Clearcase, Lotus, etc
IBM, the IBM logo, ibm.com, [IBM Brand, if trademarked], and [IBM Product, if trademarked] are trademarks or registered trademarks of
International Business Machines Corporation in the United States, other countries, or both. If these and other IBM trademarked terms are
marked on their first occurrence in this information with a trademark symbol (® or ™), these symbols indicate U.S. registered or common
law trademarks owned by IBM at the time this information was published. Such trademarks may also be registered or common law
trademarks in other countries. A current list of IBM trademarks is available on the Web at “Copyright and trademark information” at
www.ibm.com/legal/copytrade.shtml
f you have mentioned trademarks that are not from IBM, please update and add the following lines:
[Insert any special 3rd party trademark names/attributions here]
Other company, product, or service names may be trademarks or service marks of others.
Availability. References in this presentation to IBM products, programs, or services do not imply that they will be available in all
countries in which IBM operates.
The workshops, sessions and materials have been prepared by IBM or the session speakers and reflect their own views. They are
provided for informational purposes only, and are neither intended to, nor shall have the effect of being, legal or other guidance or advice
to any participant. While efforts were made to verify the completeness and accuracy of the information contained in this presentation, it 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, this presentation or any other materials. Nothing contained in this presentation 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.
All customer examples described are presented as illustrations of how those customers have used IBM products and the results they may
have achieved. Actual environmental costs and performance characteristics may vary by customer. Nothing contained in these
materials is intended to, nor shall have the effect of, stating or implying that any activities undertaken by you will result in any specific
sales, revenue growth or other results.
29](https://image.slidesharecdn.com/innovate2014cipressogates20140430-140605122605-phpapp02/85/Innovate-2014-Get-an-A-on-Testing-Your-Enterprise-Applications-with-Rational-Development-and-Test-Environment-for-System-z-30-320.jpg)
Innovate 2014: Get an A+ on Testing Your Enterprise Applications with Rational Development and Test Environment for System z
- 1. © 2014 IBM Corporation 1522, Get an A+ on Testing Your Enterprise Applications with Rational Development and Test Environment for System z Teodoro Cipresso, IBM John T. Gates Jr., IBM
- 2. Please note IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion. Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here. 1
- 3. Introduction to RD&T John T. Gates Jr., IBM 2
- 4. Business constraints with mainframe development “My development capacity charge- back is consuming my entire budget. I can’t spend on tools.” “We don’t have the capital budget to obtain more mainframe test resources for my developers. It’s easier and cheaper to get a Windows or Unix box.” “I can’t even work on Mondays! Production workload kicks me off.” “It is difficult for my developers to learn the mainframe. Operations controls can prevent experimentation by developers..” “I can only test my batch applications in offline hours. Online apps consume the 9-5 cycles.” “Operations tell me it will take two months to get my test system allocated.” “The Mainframe isn’t cool anymore. It’s faster and cheaper to develop on a Unix platform.” “I want to try out creating Event Processing and ATOM apps, but my system isn’t scheduled for a CICS update till 2014.” 3
- 5. Offload development and testing, increase speed and quality Note: This Program is licensed only for development and test of applications that run on IBM z/OS. The Program may not be used to run production workloads of any kind, nor more robust development workloads including without limitation production module builds, pre-production testing, stress testing, or performance testing. • Liberate developers to rapidly prototype new applications • Develop and test System z applications anywhere, anytime • Free up mainframe development MIPS for production workload • Eliminate costly delays by reducing burden on existing IT operations staff • Exploit the latest middleware, including CICS, IMS, and WebSphere Improve development flexibility New RDz & ISPF RDz Rational Development and Test Environment for System z 4
- 6. Linux Product Structure ZPDT (emulator) z/OS USB “token” or server connection TCP/IP TCP/IP Running z/OS within RD&T Device Map defines zPDT system DASD volumes are Linux files TCP/IP can talk to Linux or to the outside network USB Token or server supplies license to run zPDT Optional connection to Rational token server (FlexLM) Dev Map FlexLM Server (Rational Tokens) 5
- 7. Linux Product Structure ZPDT (emulator) z/OS USB “token” or server connection TCP/IP TCP/IP RD&T V 9 ships with ADCD operating system volumes. z/OS 1.13 Sample configuration for z/OS Sysplex offering also includes z/VM 6.2 * Sample sysplex system * z/VM licensed for sysplex support only! Dev Map FlexLM Server (Rational Tokens) 6
- 8. RD&T Device maps – defining devices to z/OS Linux Resources “Devmap” – will map the entities known to Linux, to the devices known to z/OS z/OS volumes are contained in Linux files z/OS Communication device is a Linux ethernet card or a logical tunnel device z/OS printer or card readers can be Linux files … Other devices are also possible such as SCSI attached tape drives. File for DASD NIC TCP/IP Ports TCP/IP Ports CPU core Memory File for DASD Files for misc I/O devices z/OS Devices 3390 Volume OSA CPU core Memory 3390 Volume 3390 Volume Printer (etc) System Console Locally Attached Terminals Device map File for DASD USB Key Not seen by z/OS 7
- 9. IBM zPDT Virtual I/O Architecture The Big Picture RD&T Linux File System awsosa LAN awsckd Device awsckd awsckd awsckd awsckd awsckd awsckd Device Device Device Device Device awsckd awsckd Device Device Device awsctc IBM zPDTawsctc 8
- 10. • Increased application quality using the included IBM runtimes for testing. Provides a high fidelity testing environment. – Functionality and services more accurately reflect the mainframe – Using actual z/OS middleware means less retesting and rework is required when moving from the unit test environment to the quality assurance or pre-production environment. – Developers have an isolated test environment to test application changes that can then be easily merged into the next level of testing • Deployment of System z runtime environment on a PC lowers development and unit tests costs and allows MIPS to be reallocated for production use. • Executes on an x86 Server • Utilizing zero development MIPS on the production mainframe for initial application change testing • Frees up additional capacity for new workload while reducing line of business development costs and chargeback. • Provides developers in a single or shared user configuration with increased flexibility and control of the test environment, allowing them to be more productive and improving application delivery times. – Can be assigned to a single developer in a laptop configuration, or can support small-scale team environments – Environments can be tailored to a single developer or team's runtime needs without altering mainframe testing environments. – Can provide a greater level of control for developers to implement quick environment changes without having to involve production operations staff. – Developers can perform their first series of tests and regression testing without worrying about causing unexpected errors. Summary - Benefits of RD&T 9
- 11. Test-Driven Development On System z Using RD&T Teodoro Cipresso, IBM 10
- 12. Compile Automated Unit Test Install & Configure Promote Results Run Manual Tests Run Automated Tests Current state for Java / .NET developers Current state for COBOL and PL/I developers* Compile Promote Results Run Manual Tests Promote & Configure Hours to days Weeks to Months How is Software Tested Today? *Feedback from mainframe customers 11
- 13. • TDD is test-first software development (write unit tests before code) • With TDD developers cycle minute-by-minute between writing unit tests, writing code, and running unit tests [1] • Running unit tests implies running everyone’s unit tests • Tests should be self-checking, automated, and run after each build • Each function of an application gets its own suite of unit tests • Add or enhance unit tests whenever committing code • Key element of TDD: “red, green, refactor” [1] A Longitudinal Study of the Use of a Test-Driven Development Practice in Industry, http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.104.6319&rep=rep1&type=pdf What is Test-Driven Development (TDD)? Red GreenRefactor 12
- 14. • xUnit: architecture for unit testing frameworks that are code-driven • Prescribes testing the fundamental units of software – examples: functions, methods, classes • Distinguishes between failures and errors in a unit of software: • A failure is an anticipated problem: – example: actual output does not match expected output • An error is an unexpected, catastrophic problem: – example: null pointer, protection exception (bad pointer) • Automation: Code, not people, determines pass, fail, or error • JUnit is a popular instance of the xUnit architecture for Java xUnit and Code-driven Unit Testing Frameworks 13
- 15. Components of the xUnit Architecture All xUnit frameworks share the following basic component architecture, with some varied implementation details. 14
- 16. • Two barriers to adoption of TDD on System z are MIPs and mobility • Consider if TDD is adopted for a z/OS application: • There would be many (10,20,100?) unit tests • These unit tests would be regularly run as code is written • Unit tests consume MIPs whether they pass, fail, or error • Mobility: work from anywhere, with or without connectivity • RD&T eliminates these barriers by providing: • A “MIPs-free” development and test environment for System z • Comprehensive ADCD software suite: CICS, IMS, DB2, WAS, RDz, Enterprise COBOL and PL/I compilers…and more • Support for virtualization: run System z in a VMware Linux guest and connect to it from Windows on the same laptop Test-Driven Development and System z 15
- 17. Scenario: Unit Test IMS Transactions hosted on RD&T, using RAD, RDz, JUnit, and IMS Connect API for Java Windows 7 VMware Workstation 10 SUSE 12.1 RD&T 9.0 ADCD z/OS 1.13 IMS Connect IMS V12.1 RDz 9.0.1 RAD and RDz 9.0.1 CICS/IMS Java Data Binding Wizard VMware NAT TCP/IP JUnit Tools and Test Runner IMS Connect API for Java IMS App Source 192.168.198.100 192.168.198.101 16
- 18. IMS Connect APIs for Java and C/C++ • IMS Enterprise Suite Connect APIs provide services for Java and C/C++ client applications that need to access IMS TM – Eases/Abstracts IMS Connect message protocol – Helps assemble, send, receive, and inspect IMS messages – Provides full set of interaction properties – Supports SSL 17
- 19. • Install RD&T on a VMware openSUSE 12.1 Linux guest – VMware Workstation for Windows 10 • Define a VMware virtual NAT network (192.168.198.2-254) • Configure openSUSE and RD&T to use static IPs on virtual NAT – Internet access through VMware host (may have dynamic IP) – Host can connect to Linux or z/OS directly (RDz, FTP, 3270…) • Customize RD&T to start an IMS DB/DC system: – Customize IMS for IMS Connect and an IMSplex (monoplex) – Add PROC and CFG members for IMS Connect – Customize PROC and CFG members for CSL and SCI (IMSplex) – Start MPRs with DBLDL=0 (disable program caching) • Customize RD&T LOADPARM “YC” PROGIM with RDz data sets Scenario Implementation: 1. Install and Configure RD&T 18
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- 22. • Install RAD 9.0.1 and RDz 9.0.1 – Install on same machine as RD&T VMware image – Install into same package group for shell sharing • Install WAS for Developers 8.5.5 (free product) – For this scenario we only need CICS/IMS Java Data Bindings – marshall.jar/com.ibm.etools.marshall.*, and j2ee.jar • Make sure RD&T is started and that you can reach z/OS from Windows • Start RDz and define a z/OS connection to RD&T using RSE • Locate the source of the IMS transaction to unit test – For the demo we will use the IVP application IVTCB Scenario Implementation: 2. Set up RAD, RDz, and WASCE 21
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- 24. • Create a Java project <bindproj> with WASCE in the classpath • Use the CICS/IMS Java Data Bindings wizard to generate binding code into <bindproj> for IVTCB’s input and output messages • Create a Java project <junitproj> that depends on <bindproj> • Download IMS Connect API for Java jar and samples.jar • Add the IMS Connect API jar to the classpath of project <junitproj> • Create a blank JUnit test case “IVTCBTest001” in <junitproj> • Using samples.jar/SimplePhonebookSample.java as a reference, fill out the code for the IVTCB JUnit test case: – Replace hand-written binding code with J2C bindings in <bindproj> – Write tests for each CRUD operation supported by IVTCB – Verify that the actual vs expected output of each operation – Open connection in setup() close connection in teardown() Scenario Implementation: 3. Create a JUnit test case to invoke IVTCB 23
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- 26. Demo 25
- 27. • RDz: Rational Developer for System z Library • http://www-01.ibm.com/support/docview.wss?uid=swg27038517 • RAD: Rational Application Developer for WebSphere Software • http://www-01.ibm.com/support/docview.wss?rs=2042&uid=swg27012580 • WAS: IBM WebSphere Application Server for Developers • http://www-03.ibm.com/software/products/en/appserv-wasfordev • IMS Enterprise Suite Connect APIs for Java and C • http://www-01.ibm.com/software/data/ims/connect/ • Junit: A programmer-oriented testing framework for Java • http://junit.org/ • http://www.vogella.com/tutorials/JUnit/article.html Demo-related Resources on the Web 26
- 28. • Rational Development and Test Environment for System z Library • http://www-01.ibm.com/support/docview.wss?uid=swg27038434 • Rational System z Development and Test Hub • http://ibm.co/rationalsystemzdevtest • RD&T Support Forum • http://www.ibm.com/developerworks/forums/forum.jspa?forumID=2283 • RD&T on ibm.com • http://www-01.ibm.com/software/rational/products/devtest/systemz/ • IBM System z zEnterprise BladeCenter Extension (zBX) • http://www-03.ibm.com/systems/z/hardware/zenterprise/zbx.html RD&T Resources on the Web 27
- 29. Suggested Sessions Session Title Day Time Room 1610 Automated Unit Testing Framework for z/OS Applications? Yes, it's real! Mon 4:15 pm Oceanic 1 2336 Getting to the DevOps promised land with continuous release and deployment across mainframe environments Tues 1:45 pm Oceanic 1 1531 Continuous Integration with Rational Development and Test Environment for System z at Nationwide Tues 3:00 pm Oceanic 1 1670 Bank of America Integrates SDLC to Provide Cross- Platform Agile Development Tues 4:15 pm Oceanic 3 2234 Becoming More Agile on the Mainframe with RD&T: Fiducia’s way of Implementing CI Wed 8:00 am Oceanic 3 1937 Speed mainframe application delivery with continuous testing and test virtualization Thurs 9:45 am Oceanic 1 28
- 30. Acknowledgements and Disclaimers © Copyright IBM Corporation 2012. All rights reserved. – U.S. Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. – Please update paragraph below for the particular product or family brand trademarks you mention such as WebSphere, DB2, Maximo, Clearcase, Lotus, etc IBM, the IBM logo, ibm.com, [IBM Brand, if trademarked], and [IBM Product, if trademarked] are trademarks or registered trademarks of International Business Machines Corporation in the United States, other countries, or both. If these and other IBM trademarked terms are marked on their first occurrence in this information with a trademark symbol (® or ™), these symbols indicate U.S. registered or common law trademarks owned by IBM at the time this information was published. Such trademarks may also be registered or common law trademarks in other countries. A current list of IBM trademarks is available on the Web at “Copyright and trademark information” at www.ibm.com/legal/copytrade.shtml f you have mentioned trademarks that are not from IBM, please update and add the following lines: [Insert any special 3rd party trademark names/attributions here] Other company, product, or service names may be trademarks or service marks of others. Availability. References in this presentation to IBM products, programs, or services do not imply that they will be available in all countries in which IBM operates. The workshops, sessions and materials have been prepared by IBM or the session speakers and reflect their own views. They are provided for informational purposes only, and are neither intended to, nor shall have the effect of being, legal or other guidance or advice to any participant. While efforts were made to verify the completeness and accuracy of the information contained in this presentation, it 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, this presentation or any other materials. Nothing contained in this presentation 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. All customer examples described are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics may vary by customer. Nothing contained in these materials is intended to, nor shall have the effect of, stating or implying that any activities undertaken by you will result in any specific sales, revenue growth or other results. 29
- 31. Thank You! Your Feedback is Important! Access the Innovate agenda tool to complete your session surveys from your smartphone, laptop or conference kiosk. 30
- 32. Backup 31
- 33. • IBM Rational Development and Test Environment for System z Quick Start Guide (GI13-1802-03) • IBM Rational Development and Test Environment for System z USB Hardware Device Quick Start Guide (GI11-9147-02) • Installation: System z Personal Development Tool Redbooks • Basic instructions for installation/ configuration of Linux, zPDT, and starter z/OS system • References • System z Personal Development Tool Volume 1: Introduction and Reference (SG24-7721-05) • System z Personal Development Tool Volume 2: Installation and Basic Usage (SG24-7722-05) • System z Personal Development Tool Volume 3: Additional Topics (SG24-7723-05) • System z Personal Development Tool Volume 4: Coupling and Parallel Sysplex (SG24-7859-02) • Configuring z/OS with IBM Rational Development and Test Environment for System z - z/OS 1.13 (SC14-7281-04) • Contains basic instructions and examples for z/OS system customization • Isolate base configuration files from customized files • Store user data on a separate disk • Configure TCP/IP settings • Configure security for critical system files • Create user IDs • Other minor but common changes to z/OS • System programmer assistance will be required to replicate specific conventions, security models, subsystems, etc RD&T Installation and Configuration Documentation 32
- 34. RD&T is enabled via a USB key • Key makes Environment operational USB key is shipped disabled. The high capacity key activation process is described on the RD&T Hub The key is physical media and can be ordered via PPA Electronic download available for SW stack Licensing User based licensing- each user needs a license: Authorized User Single Install (perpetual or fixed term) Resource Value Unit licensing, where resource = activated, emulated System z CP (perpetual or fixed term) License to Development workloads only Specifically non-production in license (i.e., no end users of the applications allowed) No guarantee or warrantee to replicate mainframe function in entirety (see limitations listed earlier) Development license for S/W stack (z/OS and middleware) content No phone or defect support provided with purchase Defects must be replicated in production system and fed through production support process Online support forum available for QA 33 RD&T environment licensing 33