Sharded Cypress Example

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This Workflows functionality is not available when running the Testkube Agent in Standalone Mode - Read More

Testkube has built-in support for parallelizing any testing tool - check out the Parallelization documentation for details and examples.

The below example shows how to distribute ("shard") a set of Cypress tests across a configurable number of nodes.

The example below:

• Loads the Cypress tests from the Git repository (content).
• Sets the working directory to the tests one (container.workingDir).
• Installs the project dependencies (steps[0].shell).
• Runs Cypress tests with dynamic sharding (steps[1].parallel).
  • The shards will be built off the test files in cypress/e2e directory (steps[1].parallel.shards.testFiles).
  • It will have maximum of 5 shards (steps[1].parallel.maxCount).
    • When there is less than or equal to 5 test files, it will run 1 shard per test file.
    • When there will be more than 5 test files, it will distribute them across 5 shards.
  • Each shard will run only selected test files with --spec Cypress' argument (steps[1].parallel.run.args).

Sharded Cypress Workflow

apiVersion: testworkflows.testkube.io/v1
kind: TestWorkflow
metadata:
  name: example-sharded-cypress
spec:
  content:
    git:
      uri: https://github.com/kubeshop/testkube
      paths:
        - test/cypress/cypress-13
  container:
    image: cypress/included:13.6.4
    workingDir: /data/repo/test/cypress/cypress-13

  steps:
    - name: Install dependencies
      shell: 'npm ci'

    - name: Run tests
      parallel:
        maxCount: 5
        shards:
          testFiles: 'glob("cypress/e2e/**/*.js")'
        description: '{{ join(map(shard.testFiles, "relpath(_.value, \"cypress/e2e\")"), ", ") }}'
        transfer:
          - from: /data/repo
        container:
          resources:
            requests:
              cpu: 1
              memory: 1Gi
          env:
            - name: CYPRESS_CUSTOM_ENV
              value: CYPRESS_CUSTOM_ENV_value
        run:
          args:
            - --env
            - NON_CYPRESS_ENV=NON_CYPRESS_ENV_value
            - --spec
            - '{{ join(shard.testFiles, ",") }}'

The log output from one of the workers: