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What is Data Augmentation?

Data Augmentation is a Galtea feature that automatically generates new test cases from a small set of examples. Instead of manually writing hundreds of test cases, you provide a few representative samples and Galtea produces a diverse test suite that preserves the realism, structure, and domain-specific patterns of your original data. It is especially useful when you already have a baseline set of test cases and want to expand your coverage without the overhead of manual creation.
Data Augmentation works with all test types — Accuracy, Security & Safety, and Behavior. When triggered, your test enters the AUGMENTING status while new cases are being generated.

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How It Works

Galtea goes beyond simple paraphrasing or template filling. The augmentation engine analyzes your existing test cases to understand their structure, detect domain-specific patterns, and plan diverse scenarios — then generates new cases that are realistic, structurally consistent, and cover different ground from each other. The result is a larger, high-quality test suite in minutes instead of days, with full control over the output size.

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How to Use Data Augmentation

You can augment any existing test directly from the Galtea dashboard:
1

Navigate to your test

Go to the Tests section and select the test you want to augment.
2

Click Augment Test Cases

Use the Augment Test Cases button to start the augmentation process.
3

Wait for generation

Your test will enter the AUGMENTING status. Once complete, the new test cases will be added to your test.

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See Also

  • Tests — Learn about tests and test types in Galtea
  • Test Cases — Understand the structure of individual test cases