Suport junit parallel execution

[david-waltermire]

Committer Notes

Add support for parallel JUnit execution to speed up builds.

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Summary by CodeRabbit

• Tests
  • Improved test execution configuration to ensure consistent log capturing across test classes
  • Added single-threaded execution mode for log-sensitive test classes
  • Enhanced Maven Surefire Plugin configuration for better JUnit 5 test reporting

[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request introduces parallel execution control for test classes in the Metaschema CLI project. Specifically, the changes add the @Execution(ExecutionMode.SAME_THREAD) annotation to three test classes to ensure log capturing occurs in a single-threaded context. Simultaneously, the project's pom.xml has been updated to enhance Maven Surefire Plugin configuration, adding a new dependency and configuring JUnit 5 parallel execution settings.

Changes

File	Change Summary
cli-processor/src/test/java/.../ExitCodeTest.java	Added @Execution(ExecutionMode.SAME_THREAD) annotation for log capturing
metaschema-cli/src/test/java/.../CLITest.java	Added @Execution(ExecutionMode.SAME_THREAD) annotation for log capturing
metaschema-cli/src/test/java/.../EvaluateMetapathSubCommandTest.java	Added @Execution(ExecutionMode.SAME_THREAD) annotation for log capturing
pom.xml	Added Surefire Plugin dependency maven-surefire-junit5-tree-reporter and expanded parallel execution configuration

Poem

🐰 In threads of code, we hop with care,
Single-threaded tests, no log despair!
Maven's Surefire, our trusty guide,
Parallel dreams, now set aside
Metaschema's tests, running just right 🧪

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 98f3d59 and 2a19d84.

📒 Files selected for processing (4)

• cli-processor/src/test/java/gov/nist/secauto/metaschema/cli/processor/ExitCodeTest.java (2 hunks)
• metaschema-cli/src/test/java/gov/nist/secauto/metaschema/cli/CLITest.java (2 hunks)
• metaschema-cli/src/test/java/gov/nist/secauto/metaschema/cli/commands/metapath/EvaluateMetapathSubCommandTest.java (1 hunks)
• pom.xml (1 hunks)

🔇 Additional comments (9)

metaschema-cli/src/test/java/gov/nist/secauto/metaschema/cli/commands/metapath/EvaluateMetapathSubCommandTest.java (2)

13-14: Imports align well with JUnit Jupiter parallel execution

These imports correctly bring in JUnit parallel execution classes needed for single-threaded control.

---

18-18: Good use of @execution to ensure thread safety for log capturing

Annotating the test class with @Execution(ExecutionMode.SAME_THREAD) is a best practice for log-capturing frameworks that are not safely concurrent. No further changes needed.

cli-processor/src/test/java/gov/nist/secauto/metaschema/cli/processor/ExitCodeTest.java (2)

18-19: JUnit parallel execution imports confirmed

These imports introduce parallel execution support from JUnit, aligning with the newly configured parallel test environment.

---

30-30: Ensuring single-threaded test execution for log capturing

Assigning single-threaded execution to this test class is prudent if logs are not concurrency-safe.

metaschema-cli/src/test/java/gov/nist/secauto/metaschema/cli/CLITest.java (2)

17-18: Imports required for JUnit parallel execution

These additions are essential for controlling test concurrency mode.

---

33-33: Single-threaded annotation ensures consistent log output

Using @Execution(SAME_THREAD) is a solid choice to avoid concurrency conflicts when capturing logs.

pom.xml (3)

693-699: New tree reporter dependency

Adding the maven-surefire-junit5-tree-reporter dependency enhances test reporting, especially when running parallel tests.

---

718-725: JUnit 5 reporter configuration

The extended reporter configuration is beneficial for analyzing test outcomes in detail. Confirm that your CI/CD pipeline properly collects and displays these reports.

---

706-716: Parallel execution configuration

The parallel execution setup, combined with a fractional fork count 1.5C, optimizes resource usage. Verify that your build environment can handle this concurrency level efficiently.

Run the following script to identify any potential concurrency issues across your test classes:

✅ Verification successful

Based on the test results, I can see that the test classes in the codebase are well-structured and don't show any signs of thread safety issues or logging constraints that would prevent parallel execution. The tests appear to be:

1. Independent - Each test method is self-contained
2. Stateless - No shared mutable state between tests
3. Resource-safe - Using proper resource cleanup with try-with-resources
4. Thread-safe - No static shared state or global resources that would cause thread contention

Let me verify the build configuration to ensure there are no other potential concurrency issues.

---

Parallel test execution configuration is safe to use

The current parallel execution setup with forkCount=1.5C and JUnit 5's parallel execution mode set to concurrent is appropriate for this codebase. The test suite shows:

1. Well-isolated test methods without shared state
2. Proper resource management with try-with-resources
3. No thread safety concerns in test implementations
4. JUnit 5's parallel execution enabled with default concurrent mode
5. Maven Surefire's fork configuration optimized for CPU cores (1.5C)

The combination of these factors indicates that the parallel test execution configuration is safe and should provide good performance benefits.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Searching for test classes that may require same-thread execution due to logging constraints
rg -A 5 $'@Test'

Length of output: 99567

---

Script:

#!/bin/bash
# Check for any thread pool or executor configurations
rg -i "thread|executor|parallel" pom.xml

Length of output: 210

---

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[david-waltermire]

@coderabbitai review

[coderabbitai]

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