There are 21 posts tagged with shiny

Behavior-Driven Development in R Shiny: Setting Up Test Preconditions with Given Steps

Learn how to set up test preconditions in Shiny BDD using Given steps. Master dependency injection, test doubles, and composable setup patterns for reliable R testing.

Simplifying Interactions with Complex Widgets in shinytest2 Using JavaScript APIs

When shinytest2's `set_inputs()` won't work, leverage widget APIs directly. Learn to write cleaner, faster and more robust tests using JavaScript APIs.

Behavior-Driven Development in R Shiny: A Step-By-Step Example

Follow each step as I develop a form with Shiny and Behavior-Driven Development. Learn practical techniques for better software design through automated tests.

Deploy Multiple Shiny Apps from One R Package

Code organization and deployment strategy for multiple Shiny apps sharing common logic within a single R package. Structuring your project in a monorepo format.

R6 Interfaces For Backend: Define What, Not How

A Practical Guide to Faking External Dependencies and Business Logic with R6 Classes for Reliable Tests.

How to Write Robust shinytest2 Tests for R Shiny Apps

A step-by-step guide to stronger R Shiny testing with stable selectors and reusable actions.

How to Write Cucumber Specifications the Right Way: From App Description to Scenarios

Adding Cucumber specifications to an existing application? Learn how to write Gherkin scenarios that focus on user behavior, not implementation details. Use AI to iterate faster.

Keys To Scalable Code: Owning The Interfaces You Use

Learn how to build scalable and maintainable code by abstraction and information hiding, improving flexibility and ease of future changes.

Acceptance Test-Driven Development with Shiny

Learn how to apply Acceptance Test-Driven Development (ATDD) to build robust Shiny applications using {shinytest2} and {selenider}.

Optimize Shinytest2: Speed Up Your Shiny App Tests

Learn how to speed up Shiny app tests using shinytest2 by reusing application instances and refreshing the browser.

Effective State Management in Shiny Modules: A React-Inspired Approach

Learn how to manage state in Shiny modules using a React-inspired approach with event handlers for better control and flexibility.

Creating Robust E2E Test Selectors for Shiny Apps

Learn how to create resilient E2E test selectors in Shiny apps using data-* attributes and best practices.

How to Snapshot Test Excel Workbooks in Shiny Apps

Learn how to export data to Excel in Shiny apps and use snapshot tests to validate and inspect the exported workbooks.

Developing Shiny Modules with Test-Driven Development

Learn how to use tests to develop Shiny modules efficiently, ensuring faster development cycles and better modularization.

How to Set Up Cucumber for End-to-End Testing in Rhino Projects

Learn how to set up Cucumber with Cypress in Rhino projects for clear and maintainable end-to-end tests.

BDD Style Testing for Shiny Module Servers with R6 and testServer

Learn how to write BDD style tests for Shiny module servers using R6 and testServer to improve readability and maintainability.

Real-Time Input Validation Using Bootstrap Form Validation API

Learn how to implement real-time input validation in Shiny apps using Bootstrap Form Validation API for immediate feedback.

How to Use Acceptance Test-Driven Development for Shiny Modules

Learn how to apply acceptance test-driven development (ATDD) to build robust Shiny modules with R6 and shinytest2.

Comprehensive Guide to Testing Shiny Modules with shiny::testServer

Learn how to effectively test Shiny modules using shiny::testServer with examples and best practices.

Extending Shiny Modules with TDD in Legacy Code

Learn how to extend Shiny modules in legacy code using the Sprout Technique and Test Driven Development.

How We Achieved 96% Code Coverage in a 2-Week App Prototype

Learn how we built an app prototype with 96% code coverage in just 2 weeks using TDD and effective testing strategies.