[rayapp] Test templates against different ray versions

[elliot-barn]

Adding --ray-version flag to rayapp test

Tested against model-composition-recsys template

[gemini-code-assist]

Summary of Changes

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This pull request enhances the rayapp testing utility by providing the capability to test templates against specific Ray versions. This allows developers to verify template compatibility and behavior across different Ray releases, improving the robustness and reliability of template deployments. The changes include adding a new command-line flag, implementing the core logic for version overriding, and integrating this functionality into the existing test execution flow.

Highlights

• New Feature: Ray Version Override: Introduced a new --ray-version flag to the rayapp test command, allowing users to specify a target Ray version for template testing.
• Core Logic for Version Override: Implemented a new overrideClusterEnvRayVersion function to dynamically modify the Ray version within cluster environments, supporting both BYOD and ImageURI configurations.
• Integration with Test Runner: Updated RunAllTemplateTests and RunTemplateTest functions to accept the new rayVersion parameter, ensuring that the specified version is applied to templates during testing.
• Expanded Test Coverage: Added new unit tests for the overrideClusterEnvRayVersion function and a comprehensive integration test to validate the end-to-end Ray version override functionality in the test runner.

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Changelog

• rayapp/rayapp/main.go
  • Added a new command-line flag --ray-version for the test subcommand.
  • Updated calls to RunAllTemplateTests and RunTemplateTest to pass the new rayVersion parameter.
  • Modified the usage message to include the new --ray-version flag.
• rayapp/template.go
  • Implemented overrideClusterEnvRayVersion to create a new ClusterEnv with a specified Ray version.
  • Added logic within overrideClusterEnvRayVersion to handle both BYOD (Build Your Own Docker) and ImageURI cluster environments.
• rayapp/template_test.go
  • Added TestOverrideClusterEnvRayVersion with test cases for overriding Ray versions in different ClusterEnv configurations (build_id, image_uri, BYOD).
• rayapp/template_test_runner.go
  • Modified RunAllTemplateTests and RunTemplateTest to accept a rayVersion string parameter.
  • Updated the runTemplateTestsWithFilter function signature to include rayVersion.
  • Added logic within runTemplateTestsWithFilter to iterate through templates and apply the rayVersion override if provided.
• rayapp/template_test_runner_test.go
  • Updated existing calls to runTemplateTestsWithFilter to pass an empty string for the new rayVersion parameter.
  • Added TestRunTemplateTestsWithRayVersionOverride to verify that the specified Ray version is correctly applied to the image URI during testing.

Activity

• The author, elliot-barn, initiated this pull request to introduce a --ray-version flag to the rayapp test command.
• The changes involve modifying the command-line argument parsing, adding new functions for version manipulation, and updating existing test execution logic.
• New unit and integration tests were added to cover the introduced functionality.

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[gemini-code-assist]

Code Review

This pull request introduces a --ray-version flag to the rayapp test command, allowing templates to be tested against different Ray versions. The implementation correctly overrides the Ray version in the cluster environment for both BYOD and image-based setups. The changes are well-tested. I have one suggestion to improve the consistency of the new flag's description in the help message.

[sai-miduthuri]

For some reason, the go fmt test is failing on CI. Is it a legitimate failure?