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Run tests in CI pipelines

You can run all types of tests in CI pipeline, including integration tests, functional tests, mutation tests, unit tests, and more.

To run tests in CI pipelines, you can use Run or Run Tests steps.

You can run any type of test for any codebase in a Run step.

For example, this step runs pytest and produces a test report in JUnit XML format.

              - step:
type: Run
name: Pytest
identifier: Pytest
shell: Sh
command: |-
pytest --junit-xml=output-test.xml
type: JUnit
- output-test.xml

For more information about configuring Run steps, go to Use Run steps.


Harness supports code coverage in Run steps.

Improve test times

These Harness CI features can improve test times:

  • Test Intelligence: Test Intelligence speeds up your test cycles by running only the unit tests required to confirm the quality of the code changes that triggered a build. You must use the Run Tests step to enable Test Intelligence.
  • Test splitting (parallelism): You can use parallelism with either the Run or Run Tests steps to speed up test times. For more information, go to Split tests in Run steps or Split tests with Test Intelligence.
  • Step groups: You can use step groups to organize and condense pipelines that run a lot of tests.

You might also try these test optimization practices:

  • Use mock services in your unit tests, rather than setting up and connecting to third-party services. Mockups can often test your code as well as fully-running services but with fewer resources.
  • Avoid integration tests in your build pipelines when possible. You might want to move these to a separate pipeline.
  • Look for obsolete tests that you can delete.
  • Look for unnecessary sleep statements in your unit test code.
  • Order your tests so that the tests most likely to fail run first.

Test results

You can view test results in Harness.

Troubleshoot tests in Harness CI

Go to the CI Knowledge Base for questions and issues related to running tests in Harness CI, including: