Javascript Tests with Jasmine for Front-end Devs

Jan 26, 2011Download as key, pdf

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Jasmine isn't just for Rubyists - it's for anyone that wants to revolutionize their Javascript code and development workflow. I give a tutorial in getting up and running with an agile, Test Driven Development workflow using nothing but HTML and Javascript.

Javascript Tests
with Jasmine
A Primer for Front-end Devs

Chris Powers
Consultant with //obtiva

http://chrisjpowers.com
@chrisjpowers

Get the Code!

$ git clone git://github.com/
chrisjpowers/jasmine_demo.git

Seems like a

lot of work
just for some lousy

regression tests...

Test Driven Development
is about much more
than just writing
test coverage!

How Does TDD Work?

•Red
• Green
• Refactor
• Repeat!

RED
•Identify a business requirement
• Write a test to express the
requirement
•Watch the test fail
• Ensure it failed “correctly”

GREEN
• Write code to make the test
pass
• Write as little code as possible
• Focus on the requirement,
don’t solve future problems

REFACTOR

•Improve your code quality
• Remove duplication (DRY)
• Modularize code
• DO NOT change app behavior

REPEAT!
Feature Test

Unit Test Unit Test Unit Test

Enforces Good Design

•Modular and Namespaced
• Flexible, Updatable, Reusable
• Easily Testable

Focus and Process

• Driven by Business
Requirements
• Red, Green, Refactor
• Know When You’re Done

“Free” Documentation

•Legible Output
• Expresses Object Behavior
• Get Devs Up to Speed

Oh yeah...
plus you get a
regression test suite

What is Jasmine?

•TDD Framework
• Tests Run in the Browser
• No Command Line Needed
• Especially Rubyist Friendly

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Droidal’s AI Agents are transforming healthcare by bringing intelligence, speed, and efficiency to key areas such as Revenue Cycle Management (RCM), clinical operations, and patient engagement. Built specifically for the needs of U.S. hospitals and clinics, Droidal's solutions are designed to improve outcomes and reduce administrative burden. Through simple visuals and clear examples, the presentation explains how AI Agents can support medical coding, streamline claims processing, manage denials, ensure compliance, and enhance communication between providers and patients. By integrating seamlessly with existing systems, these agents act as digital coworkers that deliver faster reimbursements, reduce errors, and enable teams to focus more on patient care. Droidal's AI technology is more than just automation — it's a shift toward intelligent healthcare operations that are scalable, secure, and cost-effective. The presentation also offers insights into future developments in AI-driven healthcare, including how continuous learning and agent autonomy will redefine daily workflows. Whether you're a healthcare administrator, a tech leader, or a provider looking for smarter solutions, this presentation offers a compelling overview of how Droidal’s AI Agents can help your organization achieve operational excellence and better patient outcomes. A free demo trial is available for those interested in experiencing Droidal’s AI Agents firsthand. Our team will walk you through a live demo tailored to your specific workflows, helping you understand the immediate value and long-term impact of adopting AI in your healthcare environment. To request a free trial or learn more: https://droidal.com/

STKI Israel Market Study 2025 final v1 versionDr. Jimmy Schwarzkopf

Microsoft Build 2025 takeaways in one presentationDigitalmara

Microsoft Build 2025 introduced significant updates. Everything revolves around AI. DigitalMara analyzed these announcements: • AI enhancements for Windows 11 By embedding AI capabilities directly into the OS, Microsoft is lowering the barrier for users to benefit from intelligent automation without requiring third-party tools. It's a practical step toward improving user experience, such as streamlining workflows and enhancing productivity. However, attention should be paid to data privacy, user control, and transparency of AI behavior. The implementation policy should be clear and ethical. • GitHub Copilot coding agent The introduction of coding agents is a meaningful step in everyday AI assistance. However, it still brings challenges. Some people compare agents with junior developers. They noted that while the agent can handle certain tasks, it often requires supervision and can introduce new issues. This innovation holds both potential and limitations. Balancing automation with human oversight is crucial to ensure quality and reliability. • Introduction of Natural Language Web NLWeb is a significant step toward a more natural and intuitive web experience. It can help users access content more easily and reduce reliance on traditional navigation. The open-source foundation provides developers with the flexibility to implement AI-driven interactions without rebuilding their existing platforms. NLWeb is a promising level of web interaction that complements, rather than replaces, well-designed UI. • Introduction of Model Context Protocol MCP provides a standardized method for connecting AI models with diverse tools and data sources. This approach simplifies the development of AI-driven applications, enhancing efficiency and scalability. Its open-source nature encourages broader adoption and collaboration within the developer community. Nevertheless, MCP can face challenges in compatibility across vendors and security in context sharing. Clear guidelines are crucial. • Windows Subsystem for Linux is open-sourced It's a positive step toward greater transparency and collaboration in the developer ecosystem. The community can now contribute to its evolution, helping identify issues and expand functionality faster. However, open-source software in a core system also introduces concerns around security, code quality management, and long-term maintenance. Microsoft’s continued involvement will be key to ensuring WSL remains stable and secure. • Azure AI Foundry platform hosts Grok 3 AI models Adding new models is a valuable expansion of AI development resources available at Azure. This provides developers with more flexibility in choosing language models that suit a range of application sizes and needs. Hosting on Azure makes access and integration easier when using Microsoft infrastructure.

Nix(OS) for Python Developers - PyCon 25 (Bologna, Italia)Peter Bittner

How do you onboard new colleagues in 2025? How long does it take? Would you love a standardized setup under version control that everyone can customize for themselves? A stable desktop setup, reinstalled in just minutes. It can be done. This talk was given in Italian, 29 May 2025, at PyCon 25, Bologna, Italy. All slides are provided in English. Original slides at https://slides.com/bittner/pycon25-nixos-for-python-developers

The case for on-premises AIPrincipled Technologies

Exploring the advantages of on-premises Dell PowerEdge servers with AMD EPYC processors vs. the cloud for small to medium businesses’ AI workloads AI initiatives can bring tremendous value to your business, but you need to support your new AI workloads effectively. That means choosing the best possible infrastructure for your needs—and many companies are finding that the cloud isn’t right for them. According to a recent Rackspace survey of IT executives, 69 percent of companies have moved some of their applications on-premises from the cloud, with half of those citing security and compliance as the reason and 44 percent citing cost. On-premises solutions provide a number of advantages. With full control over your security infrastructure, you can be certain that all compliance requirements remain firmly in the hands of your IT team. Opting for on-premises also gives you the ability to design your infrastructure to the precise needs of that team and your new AI workloads. Depending on the workload, you may also see performance benefits, along with more predictable costs. As you start to build your next AI initiative, consider an on-premises solution utilizing AMD EPYC processor-powered Dell PowerEdge servers.

Data Virtualization: Bringing the Power of FME to Any ApplicationSafe Software

Imagine building web applications or dashboards on top of all your systems. With FME’s new Data Virtualization feature, you can deliver the full CRUD (create, read, update, and delete) capabilities on top of all your data that exploit the full power of FME’s all data, any AI capabilities. Data Virtualization enables you to build OpenAPI compliant API endpoints using FME Form’s no-code development platform. In this webinar, you’ll see how easy it is to turn complex data into real-time, usable REST API based services. We’ll walk through a real example of building a map-based app using FME’s Data Virtualization, and show you how to get started in your own environment – no dev team required. What you’ll take away: -How to build live applications and dashboards with federated data -Ways to control what’s exposed: filter, transform, and secure responses -How to scale access with caching, asynchronous web call support, with API endpoint level security. -Where this fits in your stack: from web apps, to AI, to automation Whether you’re building internal tools, public portals, or powering automation – this webinar is your starting point to real-time data delivery.

Grannie’s Journey to Using Healthcare AI ExperiencesLauren Parr

Create Your First AI Agent with UiPath Agent BuilderDianaGray10

Join us for an exciting virtual event where you'll learn how to create your first AI Agent using UiPath Agent Builder. This session will cover everything you need to know about what an agent is and how easy it is to create one using the powerful AI-driven UiPath platform. You'll also discover the steps to successfully publish your AI agent. This is a wonderful opportunity for beginners and enthusiasts to gain hands-on insights and kickstart their journey in AI-powered automation.

UiPath Community Zurich: Release Management and Build PipelinesUiPathCommunity

Ensuring robust, reliable, and repeatable delivery processes is more critical than ever - it's a success factor for your automations and for automation programmes as a whole. In this session, we’ll dive into modern best practices for release management and explore how tools like the UiPathCLI can streamline your CI/CD pipelines. Whether you’re just starting with automation or scaling enterprise-grade deployments, our event promises to deliver helpful insights to you. This topic is relevant for both on-premise and cloud users - as well as for automation developers and software testers alike. 📕 Agenda: - Best Practices for Release Management - What it is and why it matters - UiPath Build Pipelines Deep Dive - Exploring CI/CD workflows, the UiPathCLI and showcasing scenarios for both on-premise and cloud - Discussion, Q&A 👨‍🏫 Speakers Roman Tobler, CEO@ Routinuum Johans Brink, CTO@ MvR Digital Workforce We look forward to bringing best practices and showcasing build pipelines to you - and to having interesting discussions on this important topic! If you have any questions or inputs prior to the event, don't hesitate to reach out to us. This event streamed live on May 27, 16:00 pm CET. Check out all our upcoming UiPath Community sessions at: 👉 https://community.uipath.com/events/ Join UiPath Community Zurich chapter: 👉 https://community.uipath.com/zurich/

Palo Alto Networks Cybersecurity FoundationVICTOR MAESTRE RAMIREZ

Kubernetes Cloud Native Indonesia Meetup - May 2025Prasta Maha

Multistream in SIP and NoSIP @ OpenSIPS Summit 2025Lorenzo Miniero

Slides for my "Multistream support in the Janus SIP and NoSIP plugins" presentation at the OpenSIPS Summit 2025 event. They describe my efforts refactoring the Janus SIP and NoSIP plugins to allow for the gatewaying of an arbitrary number of audio/video streams per call (thus breaking the current 1-audio/1-video limitation), plus some additional considerations on what this could mean when dealing with application protocols negotiated via SIP as well.

LSNIF: Locally-Subdivided Neural Intersection FunctionTakahiro Harada

Neural representations have shown the potential to accelerate ray casting in a conventional ray-tracing-based rendering pipeline. We introduce a novel approach called Locally-Subdivided Neural Intersection Function (LSNIF) that replaces bottom-level BVHs used as traditional geometric representations with a neural network. Our method introduces a sparse hash grid encoding scheme incorporating geometry voxelization, a scene-agnostic training data collection, and a tailored loss function. It enables the network to output not only visibility but also hit-point information and material indices. LSNIF can be trained offline for a single object, allowing us to use LSNIF as a replacement for its corresponding BVH. With these designs, the network can handle hit-point queries from any arbitrary viewpoint, supporting all types of rays in the rendering pipeline. We demonstrate that LSNIF can render a variety of scenes, including real-world scenes designed for other path tracers, while achieving a memory footprint reduction of up to 106.2x compared to a compressed BVH. https://arxiv.org/abs/2504.21627

AI Emotional Actors: “When Machines Learn to Feel and Perform"AkashKumar809858

Let’s Get Slack Certified! 🚀- Slack CommunitySanjeetMishra29

Dev Dives: System-to-system integration with UiPath API WorkflowsUiPathCommunity

Cybersecurity Fundamentals: Apprentice - Palo Alto CertificateVICTOR MAESTRE RAMIREZ

Agentic AI Explained: The Next Frontier of Autonomous Intelligence & Generati...Aaryan Kansari

Introducing FME Realize: A New Era of Spatial Computing and ARSafe Software

End-to-end Assurance for SD-WAN & SASE with ThousandEyesThousandEyes

Droidal: AI Agents Revolutionizing HealthcareDroidal LLC

STKI Israel Market Study 2025 final v1 versionDr. Jimmy Schwarzkopf

Microsoft Build 2025 takeaways in one presentationDigitalmara

Nix(OS) for Python Developers - PyCon 25 (Bologna, Italia)Peter Bittner

The case for on-premises AIPrincipled Technologies

Data Virtualization: Bringing the Power of FME to Any ApplicationSafe Software

Grannie’s Journey to Using Healthcare AI ExperiencesLauren Parr

Create Your First AI Agent with UiPath Agent BuilderDianaGray10

UiPath Community Zurich: Release Management and Build PipelinesUiPathCommunity

Palo Alto Networks Cybersecurity FoundationVICTOR MAESTRE RAMIREZ

Kubernetes Cloud Native Indonesia Meetup - May 2025Prasta Maha

Multistream in SIP and NoSIP @ OpenSIPS Summit 2025Lorenzo Miniero

LSNIF: Locally-Subdivided Neural Intersection FunctionTakahiro Harada

AI Emotional Actors: “When Machines Learn to Feel and Perform"AkashKumar809858

Let’s Get Slack Certified! 🚀- Slack CommunitySanjeetMishra29

Javascript Tests with Jasmine for Front-end Devs

1. Javascript Tests with Jasmine A Primer for Front-end Devs

2. Chris Powers Consultant with //obtiva http://chrisjpowers.com @chrisjpowers

3. Get the Code! $ git clone git://github.com/ chrisjpowers/jasmine_demo.git

4. Why Test Javascript?

5. Seems like a lot of work just for some lousy regression tests...

6. Test Driven Development is about much more than just writing test coverage!

7. How Does TDD Work? •Red • Green • Refactor • Repeat!

8. RED •Identify a business requirement • Write a test to express the requirement •Watch the test fail • Ensure it failed “correctly”

9. GREEN • Write code to make the test pass • Write as little code as possible • Focus on the requirement, don’t solve future problems

10. REFACTOR •Improve your code quality • Remove duplication (DRY) • Modularize code • DO NOT change app behavior

11. REPEAT! Feature Test Unit Test Unit Test Unit Test

12. Enforces Good Design •Modular and Namespaced • Flexible, Updatable, Reusable • Easily Testable

13. Focus and Process • Driven by Business Requirements • Red, Green, Refactor • Know When You’re Done

14. “Free” Documentation •Legible Output • Expresses Object Behavior • Get Devs Up to Speed

15. Oh yeah... plus you get a regression test suite

16. What is Jasmine? •TDD Framework • Tests Run in the Browser • No Command Line Needed • Especially Rubyist Friendly

17. Tutorial Let’s get testing...

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Javascript Tests with Jasmine for Front-end Devs

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