"uTest is a small unit testing library I maintain that aims for simplicity and convenience. This blog post explores the Golden testing feature newly-added in uTest 0.9.0: why it is necessary, what it does, and how it works internally. This feature was inspired by the Jane Street blog post What if writing tests was a joyful experience. About the Author: Haoyi is a software engineer, and the author of many"
"check that the logs of a particular workflow "look right", and you would like to check that they do not change unexpectedly, but you don't want to spend time typing out an entire log file by hand! For example, consider the FullRunLogsTests in the Mill build tool. These tests run some simple commands and assert against the shape of the output logs, with the dual goal of ensuring all the "expected" logging is present, and no unwanted debug messages appear"
"Haoyi's book Hands-on Scala Programming The Motivation for Golden Tests Golden testing, also called Snapshot testing, compares the output of your code against some pre-defined "Golden" value. What differentiates golden tests from normal unit tests is that the golden values are often relatively large, and instead of being written and maintained by hand they are generated and updated automatically by the testing framework. For example, you may want to"
uTest is a small unit-testing library focused on simplicity and convenience. Golden testing, also known as snapshot testing, compares program output against predefined golden values to detect unexpected changes. Golden values tend to be large and are generated and updated automatically by the testing framework rather than written and maintained by hand. Golden testing is useful for validating that workflow logs look correct without manually typing full log files. The Mill build tool uses FullRunLogsTests that normalize command output and assert equality with golden lists to ensure expected logging appears and unwanted debug messages do not appear.
Read at Lihaoyi
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