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Unit tests are essential to maintaining code quality, especially as the complexity of an application increases.
Sourcegraph is a large-scale code search engine (live at sourcegraph.com) that indexes millions of projects across 5
different languages. Its web app component is written in the Go programming language. The Go standard library has a
terrific package for writing unit tests, but the language is still fairly young and the best-practices conventions
around structuring tests for different types of applications are still evolving and developing.
Quinn Slack discusses some patterns that Sourcegraph uses to implement fast, D.R.Y., and comprehensive unit test
coverage. He walks through how Sourcegraph initially structured its tests and the improvements they made as their web
app scaled and became more complex. He shows specific code snippets and hopes that these usage patterns will be useful
to others building programs in Go. Slides are available at: