A method, system, and computer program product for facilitating deduplication product testing in a computing environment is provided. At least one deduplication test file is generated. The at least one deduplication test file is adapted for, when processed through the deduplication product testing, exhibiting a predefined deduplication factor. A definition file is initialized. The definition file defines at least one file characteristic addressed during the generating the at least one deduplication test file to obtain the predefined deduplication factor. The file characteristic may include a file pattern, a file/pattern ratio, and a pattern across multiple files.