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Cypress Troubleshooting

Error with --project​

Please use KNAPSACK_PRO_TEST_FILE_PATTERN instead of --project.

If you really need to use --project, you can do so with an NPM script:

{
  ...
  "scripts": {
    "knapsack-pro-cypress-subdirectory": "cd subdirectory && knapsack-pro-cypress"
  }
}

and invoke it with:

npm run knapsack-pro-cypress-for-subdirectory

JavaScript heap out of memory​

You can increase the memory available to Node with --max_old_space_size:

export NODE_OPTIONS=--max_old_space_size=4096

npx knapsack-pro-jest

npx knapsack-pro-cypress

Debug Knapsack Pro on your development environment/machine​

To reproduce what Knapsack Pro executed on a specific CI node, check out the same branch and run:

KNAPSACK_PRO_TEST_SUITE_TOKEN_CYPRESS=MY_TOKEN \
KNAPSACK_PRO_CI_NODE_INDEX=MY_INDEX \
KNAPSACK_PRO_CI_NODE_TOTAL=MY_TOTAL \
KNAPSACK_PRO_BRANCH=MY_BRANCH \
KNAPSACK_PRO_COMMIT_HASH=MY_COMMIT \
KNAPSACK_PRO_CI_NODE_BUILD_ID=MY_BUILD_ID \
KNAPSACK_PRO_FIXED_QUEUE_SPLIT=true \
KNAPSACK_PRO_TEST_FILE_PATTERN="cypress/e2e/**/*.{js,jsx,coffee,cjsx}" \
npx knapsack-pro-cypress

KNAPSACK_PRO_CI_NODE_BUILD_ID must be the same as the CI build you are trying to reproduce (if it helps, take a look at what Knapsack Pro uses as ciNodeBuildId for your CI provider).

No tests are executed (or test_files: [ 'parameter is required' ])​

Make sure KNAPSACK_PRO_TEST_FILE_PATTERN is correct.