dgraph-operator-archive

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The unit tests added in this PR use gomega for assertions. I have been looking at the alternatives we can use for testing purposes within the operator. As discussed offline I think that we can use ginkgo with gomega. Though using go test alone can work for us, I think it makes more sense to use a more verbose testing framework for the operator end to end tests. Ginkgo is already being popularly adopted by the Kubernetes community with a lot of CNCF projects already using it including kubernetes itself. Ginkgo provides a lot of benefits for writing e2e test framework for the project which includes:

• Focusing on a particular test and running it with the specified parallelism.
• Running each test spec in a clean copy of the state to avoid leakage between tests.

Apart from this, the syntax used for writing ginkgo tests is quite verbose. A lot of popular operators are also using ginkgo for testing like tidb-operator.

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