A technique that tests different input data ranges (domains) to ensure correct handling of valid and invalid values.
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Domain testing checks how an application responds to different ranges of input like minimum, maximum, boundaries, and invalid values. It helps detect issues where the system handles edge limits incorrectly, improving reliability and reducing data-related bugs.
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You break inputs into partitions or boundaries and test samples from each group. This prevents testing every possible value while still ensuring the system behaves correctly across all expected and unexpected input ranges.