XModelBuilder library eliminates need for hand-written test data builders in .NET

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A .NET library called XModelBuilder offers a generic fluent builder that works with any C# class, removing the need to write and maintain separate builder classes per type. Developers can set only the properties relevant to their tests while the library auto-fills the rest, including deeply nested paths and collection indexers. The library supports reproducible random data through a seeded faker integration, preventing unpredictable test failures caused by changing values across runs. A BuildMany method allows batch creation of test objects with shared or index-varying properties in a single call. Optional per-type builder classes can be registered to define defaults, and multiple named presets for the same type can be configured and switched as the default.

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