Engineering

Synthetic Data for RPA and Automation Regression Testing

Marcus Sterling||5 min
+T

Regression testing for RPA and automation pipelines often stalls because teams cannot generate enough realistic test cases. Real-world data is scarce, expensive to refresh, and risky to use in production-like environments. Synthetic data fills these gaps by creating diverse, programmable scenarios that cover edge cases, error paths, and rare events without touching production systems.

The real coverage problem

Most regression suites focus on happy paths and a handful of common error states. In practice, automation scripts fail when they encounter unexpected UI layouts, missing fields, or unusual data formats. A 2023 study of enterprise RPA deployments found that 43 percent of automation failures were due to untested edge cases, not logic errors in the scripts themselves. Coverage metrics for typical test suites rarely exceed 60 percent of possible workflows. Synthetic data lets teams generate those missing workflows programmatically, ensuring that regression tests hit the scenarios that actually cause production issues.

How synthetic data improves regression pipelines

Synthetic datasets can be tailored to the specific applications under test. Teams can inject rare combinations of input fields, simulate inconsistent data formats, and reproduce complex multi-step workflows that happen only once every few months. One fintech automation team used synthetic data to triple the number of edge-case scenarios in their regression suite. After the change, they saw a 27 percent reduction in production incidents attributed to untested UI changes. Synthetic inputs also enable safe testing in lower environments, reducing the risk of accidentally corrupting production data during validation runs.

Practical techniques for RPA and automation testing

  • Define canonical workflows and extract common fields from existing test logs to serve as templates.
  • Use statistical sampling to generate variations that preserve distribution properties while introducing diversity.
  • Apply constraint solving to ensure generated inputs respect business rules and data validation logic.
  • Combine synthetic data with real logs to identify patterns that synthetic generation should prioritize.
  • Run regression suites in parallel: synthetic scenarios first, then a smaller set of real-world cases for validation.

Synthetic data expands the test surface area for RPA and automation regression, uncovering edge cases that real-world data alone cannot reliably reproduce.

How Coasty fits

Coasty builds computer use agents that run on real desktops and browsers to capture realistic interaction data. These agents can generate synthetic datasets tailored to your specific automation workflows, including the UI states, input sequences, and error conditions that matter for regression testing. This is a custom, contact-led service, not a self-serve product. You talk to the Coasty data team about your use case, and they build a dataset that aligns with your automation targets and testing requirements.

To start building synthetic data for your RPA and automation regression pipeline, book a data call with the Coasty data team at https://cal.com/coasty/coasty-data-call .

Want to see this in action?

View Case Studies
Try Coasty Free