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test-with-spanner

Testing & Quality
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Run unit tests that require the Spanner emulator. Use this skill when the user wants to run tests in packages like satellite/metabase, satellite/metainfo, or any other tests that interact with Spanner. Automatically handles checking for and configuring the Spanner emulator environment.

QUICK START

How to use this skill

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  3. Review the proposed files and risks before you approve installation.
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Source SKILL.md: https://github.com/storj/storj/blob/HEAD/.claude/skills/test-with-spanner/SKILL.md

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Run Unit Tests with Spanner

You are helping run unit tests that require the Spanner emulator.

Instructions

The Storj test framework automatically manages the Spanner emulator lifecycle using the run: prefix in the STORJ_TEST_SPANNER environment variable. To run tests automatically spanner_emulator binary needs to be on PATH. Spanner can be also set for tests using -spanner-test-db flag.

Running Tests

  1. If test name is provided in arguments:

    • Find the package containing the test using Grep
    • Run the test with Spanner

  2. If only package path is provided:

    • Run all tests in that package with Spanner

  3. Determine the Spanner connection method:

    • First, check if STORJ_TEST_SPANNER is already set in the environment. If it is, do NOT pass -spanner-test-db — the test framework will pick it up automatically.
    • Only if STORJ_TEST_SPANNER is not set, pass -spanner-test-db 'run:spanner_emulator' to auto-manage the emulator.

  4. Command format:

# When STORJ_TEST_SPANNER is already set in the environment:
go test -v ./package/path -run TestName

# When STORJ_TEST_SPANNER is NOT set:
go test -v ./package/path -run TestName -spanner-test-db 'run:spanner_emulator'

The run: prefix tells the test framework to:

  • Automatically start the Spanner emulator before tests
  • Configure the connection for each test
  • Clean up and stop the emulator after tests complete
  1. Report test results:
    • Show whether tests passed or failed
    • List all subtests that ran
    • If tests failed, offer to help investigate the failures

Common test paths

Some common test paths in the Storj codebase:

  • ./satellite/metabase - Metabase tests
  • ./satellite/metainfo - Metainfo API tests
  • ./satellite/satellitedb - Database tests

Example Usage

# Run a specific test
go test -v ./satellite/metainfo -run TestEndpoint_Object_No_StorageNodes -spanner-test-db 'run:spanner_emulator'

# Run all tests in a package
go test -v ./satellite/metabase -spanner-test-db 'run:spanner_emulator'

# Run tests with timeout
go test -v -timeout 10m ./satellite/metabase -run TestLoop -spanner-test-db 'run:spanner_emulator'

Notes

  • Each test gets its own emulator instance that's automatically managed
  • No manual cleanup is required - the framework handles emulator lifecycle
  • The run: prefix is the recommended approach used in Storj's CI/CD (see Jenkinsfile.verify and Jenkinsfile.public)