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refactor: Transition direct assertions from cargo-test-support to snapbox ### What does this PR try to resolve? Cargo has a bespoke testing framework for functional tests - Extra stuff for us to maintain - Don't leverage benefits from contributions related to other projects - Less incentive to be thoroughly documented UI tests are written using snapbox. The latest release of snapbox (#13963) was geared at supporting cargo's needs in the hope that we can consolidate on testing frameworks. Besides having a single set of semantics, benefits we'd gain include - Updating of test snapshots - Fancier redacting of test output (e.g. #13973) This is the first incremental step in this direction. This replaces direct assertions with snapbox assertions. This still leaves all of the CLI output assertions. These will be done incrementally. ### How should we test and review this PR? ### Additional information |
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