STP + Add Report Validation, Export Tests, Code Coverage Enforcement, and Benchmarks

[docflex]

📄 Description:

This PR enhances the reporting module by adding robust test coverage, runtime benchmarking, code quality safeguards, and improved CI pipeline integration.

---

🧪 Tests Added:

• Unit tests for ReportValidators

  • Valid .jasper and .jrxml handling
  • IO exceptions and null streams
  • Unsupported input types (e.g., InputStream, byte[])

• Unit tests for ReportExporter

  • XML export failures and exception propagation

• Unit tests for ReportGenerator

  • Happy path for all supported formats
  • Input and template validation failures
  • Unexpected runtime exceptions from getDataRows()

• Verified thrown exceptions match expected types (including NullPointerException as cause in RuntimeException)

---

🚀 Enhancements:

• Benchmarking

  • Added runtime logging to ReportGenerator.generateReport() to measure execution duration in milliseconds.

• Coverage Enforcement

  • Updated Maven config and GitHub Actions to:

    • Generate JaCoCo coverage report via mvn verify
    • Enforce 80% minimum line coverage (build will fail if not met)

---

⚙️ CI Pipeline Changes (.github/workflows/test-feature.yml):

• Added jacoco:report and jacoco:check to mvn command
• Enforced minimumLineCoverage=0.80
• Reports generated in target/site/jacoco/index.html

---

📊 How to View Coverage

After running:

mvn clean verify

Open this file:

target/site/jacoco/index.html

---

📎 Notes

• Logging conflicts with commons-logging were resolved by avoiding duplicate classpath entries.
• Exception wrapping is intentional in ReportGenerator to ensure internal failures don’t propagate unchecked.

---

Let me know if you'd like to split this PR or further document anything!