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Minimize Task

The minimize_task is responsible for reducing the size and complexity of a test case while preserving its ability to reproduce a crash. This task ensures that the test case is as small and simple as possible, making it easier to analyze and debug.

Key Responsibilities

  1. Crash Verification:Ensures that the test case reliably reproduces the crash before starting minimization.
  2. Gesture Minimization:Reduces the number of gestures required to reproduce the crash.
  3. File Minimization:Minimizes the main test case file and any associated resources.
  4. Argument Minimization:Reduces the command-line arguments required to reproduce the crash.
  5. Resource Minimization:Minimizes additional resources, such as dependency files, used by the test case.
  6. Finalization: Stores the minimized test case and creates follow-up tasks for further processing.

Workflow

  1. Initialization:

    • Sets up the test case and its dependencies.
    • Verifies that the crash is reproducible.

  2. Minimization Phases:

    • Gestures: Reduces the number of gestures required to trigger the crash.
    • Main File: Minimizes the primary test case file.
    • File List: Minimizes the list of files associated with the test case.
    • Resources: Minimizes additional resources used by the test case.
    • Arguments: Reduces the command-line arguments required to reproduce the crash.

  3. Deadline Handling:

    • If the task exceeds its deadline, it stores the partially minimized test case and retries later.

  4. Finalization:

    • Stores the minimized test case in the backend.
    • Creates follow-up tasks such as regression testing and progression testing.

Important Notes

  • Reproducibility:The task ensures that the minimized test case still reproduces the crash.
  • Deadline Management:If the task cannot complete within the allotted time, it stores the progress and retries later.
  • Specialized Minimization:The task uses specialized strategies for certain file types, such as JavaScript and HTML.
  • Error Handling: If the test case is unreproducible or the build setup fails, the task logs an error and retries or skips minimization.