- Prior to code integration to trunk, developers pre-flight test their code to make sure it doesn’t blow up the trunk.
- During the CI cycle and code commits from multiple developers integration testing is used to verify merges. During the continuous testing phase where nightly and weekend regression runs are automated for trunk and release branches it is testing that does the job of finding problems before the software release.
- During the release deployment phase more testing verifies the release packages are ready for release.
Whether the organization is using a test driven development methodology, behavior based test creation, model-based testing or whatever they use, testing is a vital part of the overall DevOps process — not only to ensure verify code changes work and integrate well — but to ensure the changes do not blow up the product.
Source: http://devops.com/2015/02/02/devops-continuous-testing/
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