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tecton

Testing & Quality
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Run Tecton plan and tests via Pants in the data-science repo. Handles long-running commands with proper output capture to avoid truncation.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/data/tecton/SKILL.md

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Tecton Operations Skill

Critical: Output Handling for Long Commands

Tecton commands (especially tecton-plan) produce very long output that gets truncated. Always use temp file capture pattern:

TMPFILE=$(mktemp)
PANTS_CONCURRENT=True pants tecton-plan --workspace=<workspace> --skip-tests 2>&1 | tee "$TMPFILE"; echo "EXIT_CODE: $?"
# Inspect results
tail -200 "$TMPFILE"
# If needed, inspect more or search for specific errors
rg "error|Error|ERROR" "$TMPFILE"
# Clean up when done
rm -f "$TMPFILE"

Key points:

  • Use tee to capture output to temp file while still streaming
  • Check exit code with echo "EXIT_CODE: $?"
  • Use tail or rg to inspect the temp file as needed
  • Always clean up the temp file when done with the operation

Environment

  • Set PANTS_CONCURRENT=True when running multiple pants invocations concurrently
  • All commands must be run from the data-science repo root

Workspaces for Testing

  • checkoutandsale-v1-staging: Staging workspace - check against this first
  • bence-dev: Personal dev workspace for clarifying issues if staging fails with confusing errors

If staging passes, no need to check against bence-dev. Use bence-dev only when staging errors are unclear.

Operations

tecton-plan

Runs tecton plan against a workspace. Use --skip-tests to speed up iteration.

# Plan against staging (check this first)
TMPFILE=$(mktemp)
PANTS_CONCURRENT=True pants tecton-plan --workspace=checkoutandsale-v1-staging --skip-tests 2>&1 | tee "$TMPFILE"; echo "EXIT_CODE: $?"
tail -200 "$TMPFILE"
rm -f "$TMPFILE"

# Plan against dev workspace (only if staging errors are unclear)
TMPFILE=$(mktemp)
PANTS_CONCURRENT=True pants tecton-plan --workspace=bence-dev --skip-tests 2>&1 | tee "$TMPFILE"; echo "EXIT_CODE: $?"
tail -200 "$TMPFILE"
rm -f "$TMPFILE"

tecton-test-run

Run Tecton tests using the pants test goal with --tecton-test-run flag.

# Run all tecton tests in a directory
pants test --tecton-test-run projects/features/repos/sig_tecton/tests/sig_tecton/datasources/orders/::

# Run a specific test file
pants test --tecton-test-run projects/features/repos/sig_tecton/tests/sig_tecton/datasources/orders/test_orders_datasources.py

# Run a specific test function
pants test --tecton-test-run projects/features/repos/sig_tecton/tests/path/to/test_file.py -- -k test_function_name

For long test runs, use the same temp file capture pattern:

TMPFILE=$(mktemp)
pants test --tecton-test-run projects/features/repos/sig_tecton/tests/:: 2>&1 | tee "$TMPFILE"; echo "EXIT_CODE: $?"
tail -200 "$TMPFILE"
rm -f "$TMPFILE"