flow.md

Sequences diagrams

Run tests

Java implementation

flowchart TD
    Start --> A[Save .zip archives in the FS]
    A --> B{Error?}
    B -- Yes --> Z

    B -- No --> D[Extract .zip archives]
    D --> E{Error?}
    E -- Yes --> Z

    E -- No --> F[Merge extracted folders]
    F --> G{Error?}
    G -- Yes --> Z

    G -- No --> H[Run test command]
    H --> I[Sanitize Stdout / Stderr]
    I --> J[Delete tests execution folder]
    J --> Z

    Z[Send update to the SSU Queue] --> Finish

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Explanations

• Merge extracted folders: In this step, the src/test/java folder from the teacher's code is merged with the src/main/java folder from the student's code in the src/ folder of the language template in order to:

  • Use the pom.xml file from the language template to make sure no additional dependencies are added or removed from the project by the teacher or the student. This is important because we only guarantee that the tests will run correctly and securely if the dependencies are the same as the ones defined in the language template.

  • Run the teacher's tests against the student's code.

• Sanitize Stdout / Stderr: In this step, the stdout and stderr of the tests execution are sanitized in order to remove any sensitive information that may be present in the output of the tests execution (e.g. File paths, etc.).