# Run the Spock Test Suite and Triage Groovy Failures with Atlas in 2026 > Groovy developers in 2026 leverage Atlas to turn `gradle test` output into a prioritized list of distinct root causes for Spock failures. In 2026, Groovy developers can transform a deluge of red test output from `gradle test` into a prioritized list of distinct root causes using Atlas. This terminal-native AI agent integrates directly with your Groovy toolchain, including Spock specifications and Gradle builds, to streamline the entire triage process from execution to resolution. ## Key takeaways - Atlas runs Groovy Spock tests via `gradle test` and captures full logs. - Use `atlas grep` to group Groovy test failures by root cause, not just test name. - `atlas todowrite` helps track distinct Groovy issues, preventing forgotten fixes. - Atlas's `edit` tool provides diffs for Groovy code changes, requiring approval. - Re-run specific Spock tests with `atlas bash` for rapid Groovy development cycles. - Atlas ensures safety with permission-gated actions and git patch snapshots for Groovy projects. ## How Atlas Runs Groovy Spock Tests and Captures Output In 2026, Atlas executes Groovy Spock test suites using the `bash` tool, ensuring comprehensive output capture. When running `./gradlew test`, Atlas passes a generous timeout in milliseconds, preventing slow suites from being prematurely terminated and guaranteeing the full test log is available for analysis. Atlas integrates directly with your Groovy project's `build.gradle` configuration to invoke the `gradle test` command. The `bash` tool, a core Atlas capability, is used to run this command. While the terminal output is truncated at 2000 lines or 50 KB to maintain readability, Atlas always writes the complete, untruncated log to a retained file. This file's path is clearly indicated in the "...output truncated..." header, allowing Groovy developers to access the entire context of their Spock test failures. This approach ensures that even extensive test runs, common in large Groovy codebases, provide all necessary diagnostic information without loss. ## Grouping Groovy Test Failures by Root Cause with Atlas Identifying distinct root causes from a wall of red Groovy test output is a critical step in 2026. Atlas facilitates this by using its `grep` tool to analyze the complete test log, grouping failures by underlying issues rather than individual Spock specification names. After running `./gradlew test` and capturing the full log, Atlas empowers Groovy developers to move beyond superficial test-name-based grouping. Instead, the `grep` tool is employed to search the saved log file for common error patterns, stack trace elements, or specific exception messages that indicate a shared root cause. For instance, a developer might `grep` for "NullPointerException" or a specific database connection error across multiple Spock failures. This method is particularly effective for Groovy projects where a single configuration issue or dependency problem, perhaps related to `@Grab` or Gradle dependencies, can manifest as many seemingly unrelated test failures. Atlas's ability to process the entire log file ensures no relevant failure signature is missed. ## Tracking Groovy Fixes and Iterating with Atlas In 2026, Atlas provides the `todowrite` tool to track distinct Groovy test failure causes, ensuring no issue is forgotten. Once a root cause is identified, Atlas's `edit` tool allows developers to apply fixes and re-run only the affected Spock tests. For each distinct root cause identified in the Groovy test suite, Atlas's `todowrite` tool creates a new entry with a "pending" status. This structured approach helps manage the triage process, transforming a chaotic list of failures into an organized task list. When a developer is ready to address a specific issue, such as a bug in a Groovy DSL closure or a misconfigured Gradle dependency in `build.gradle`, they use the `edit` tool. Atlas then presents a unified diff for every file edit, requiring explicit approval before writing changes. After applying a fix, the developer can use the `bash` tool to re-run only the relevant Spock tests, significantly accelerating the feedback loop. This iterative process, supported by Atlas's permission-gated actions and diff review, ensures safe and efficient resolution of Groovy test failures. ## Atlas Safety and Review for Groovy Code Changes Atlas prioritizes safety and transparency for Groovy code changes in 2026, employing a multi-stage review process. Every Atlas tool call, including those affecting `build.gradle` or Spock specifications, is permission-gated against allow, ask, and deny rules. Before Atlas executes any action that could modify your Groovy codebase, such as applying a fix to a `Jenkinsfile` or adjusting a `build.gradle` script, it operates through a read-only plan agent. This agent drafts a detailed plan and seeks explicit user approval before switching to a build agent that can make changes. Furthermore, Atlas computes a unified diff for every proposed file edit, presenting it for review and approval before any modifications are written to disk. This granular control extends to all tools, including `bash` for running `./gradlew test` or `edit` for modifying Groovy source files. Atlas also snapshots file changes as git patches, allowing edits to be easily diffed and rolled back, providing a robust safety net for Groovy developers. ## Steps 1. Initiate Atlas in your Groovy project, ensuring it can read your `build.gradle` or `Jenkinsfile` and any shared pipeline library. 2. Execute the full Spock test suite using `atlas bash "./gradlew test --timeout 300000"`, providing a generous timeout to prevent premature termination. 3. If the output is truncated, use `atlas read ` to review the complete Groovy test log file indicated in the header. 4. Group distinct Groovy test failures by root cause using `atlas grep "NullPointerException" ` or similar patterns to identify common issues. 5. For each distinct root cause, create a tracking entry with `atlas todowrite "Fix Groovy DSL closure error in MyServiceSpec" --status pending`. 6. Address a specific failure by using `atlas edit src/main/groovy/com/example/MyService.groovy` to modify the relevant Groovy source file or Spock specification. 7. After editing, re-run only the affected Spock tests with `atlas bash "./gradlew test --tests com.example.MyServiceSpec.myFailingTest"`. 8. Review the unified diff presented by Atlas for your Groovy code changes and approve them before writing to disk. 9. Repeat the fix and re-run cycle until all distinct Groovy test failures are resolved. ## FAQ ### How does Atlas handle large Groovy test suite outputs from `gradle test`? Atlas's `bash` tool truncates terminal output at 2000 lines or 50 KB for readability, but always writes the complete `gradle test` log to a retained file. The path to this full log is provided, allowing Groovy developers to use `atlas read` for comprehensive analysis of all Spock test failures. ### Can Atlas help me identify the root cause of multiple Spock test failures in Groovy? Yes, Atlas helps identify distinct root causes. Instead of focusing on individual Spock test names, you use `atlas grep` on the complete test log to find common error patterns, stack traces, or exception messages that indicate a shared underlying issue across your Groovy codebase. ### What Groovy-specific files and commands does Atlas interact with? Atlas interacts with standard Groovy project files like `build.gradle` and `Jenkinsfile`. It executes commands such as `./gradlew test` for Spock specifications and can apply `Spotless` with the Groovy formatter. Atlas also understands Groovy DSL closures and Gradle dependencies. ### How does Atlas ensure I approve changes to my Groovy code? Atlas employs a robust safety mechanism. It drafts plans in a read-only agent and asks for approval before switching to a build agent. For every proposed edit to your Groovy files, Atlas computes and displays a unified diff, requiring your explicit approval before writing any changes to disk. ### Can Atlas help me track the fixes for Groovy test failures? Absolutely. Atlas's `todowrite` tool allows you to create entries for each distinct root cause of a Groovy test failure, marking them as "pending." This helps you manage and prioritize your fixes, ensuring that no identified issue in your Spock test suite is overlooked. ### How does Atlas support an iterative fix-and-retest workflow for Groovy? After using `atlas edit` to modify a Groovy source file or Spock specification, you can use `atlas bash` to re-run only the specific affected tests. This rapid feedback loop, combined with Atlas's diff review and approval process, significantly accelerates the debugging and resolution of Groovy test failures. ### Does Atlas integrate with Groovy's dependency management? Yes, Atlas is designed to understand Groovy's dependency management. It can read your `@Grab` or Gradle dependencies within `build.gradle` or other Groovy scripts, providing context for debugging dependency-related test failures. --- Canonical HTML: https://runatlas.sh/resources/stacks/run-the-test-suite-and-triage-failures-in-groovy Source of truth: aeo_pages row `/resources/stacks/run-the-test-suite-and-triage-failures-in-groovy` (segment: Stacks) (this file is generated from it, never hand-edited). Licence: Atlas is proprietary with a free core. It is not open source and there is no public source repository.