Automated GUI Testing on MCUs

Squish for MCU applications

Squish for MCUs is an automated UI testing tool designed for microcontroller-based applications, particularly those built with Qt Quick Ultralight. Microcontrollers (MCUs) have strict resource limitations, making traditional testing approaches difficult. Squish for MCUs overcomes these challenges by using image-based testing, OCR (optical character recognition), and external event injection to verify UI functionality.

Unlike manual testing, which is time-consuming and error-prone, Squish for MCUs provides a reliable, automated alternative. It allows developers to validate UI elements, detect changes, and simulate user interactions like taps and clicks without modifying the application code. Additionally, it integrates with existing test frameworks, making it easier to incorporate into automated testing pipelines and CI workflows.

With Squish for MCUs, teams can efficiently test embedded UIs on supported hardware platforms, ensuring a high-quality user experience even in resource-constrained environments.

Squish includes dedicated support for:

Automated UI Testing for Microcontrollers – Designed for Qt Quick Ultralite applications on resource-constrained MCUs.

Image-Based Testing – Verifies UI elements by detecting and comparing screen images.

OCR-Based Text Recognition – Scans and validates on-screen text using optical character recognition.

Simulated User Interactions – Automates taps, clicks, and gestures without modifying the application code.

Screenshot and Visual Verification – Captures and compares screen states for accurate UI validation.

Support for Multiple Scripting Languages – Write test scripts in Python, JavaScript, Perl, Ruby, or Tcl.

Seamless Integration with CI Systems – Easily integrates into existing automated testing workflows.

Multi-Board Compatibility – Supports STM and NXP microcontrollers, with more to come.

Squish IDE Support – Includes debugging tools, code completion, and test management features.