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doc: add release note on coverage testing of no-test packages

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Add a small release note blurb to describe the changes in CL 495447
relating to "go test -cover" runs on packages with functions but no
tests.

For #61422.

Change-Id: Ib8163ac70b902f0d7f9f470b944e7f70711e3cf3
Reviewed-on: https://go-review.googlesource.com/c/go/+/547635
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Than McIntosh <thanm@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Than McIntosh 2023-12-05 15:15:06 -05:00 committed by Gopher Robot
parent e418258993
commit c002a5d8ab
1 changed files with 19 additions and 0 deletions
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doc/go1.22.html
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@ -53,6 +53,25 @@ Do not send CLs removing the interior tags from such phrases.
<!-- cmd/go: remove conversion of legacy pre-module dependency configs --> <!-- cmd/go: remove conversion of legacy pre-module dependency configs -->
</p> </p>
<!-- CL 495447 -->
<p>
`go` `test` `-cover` now prints coverage summaries for covered
packages that do not have their own test files. Prior to Go 1.22 a
`go` `test` `-cover` run for such a package would report
</p>
<p>
<code>? mymod/mypack [no test files]</code>
</p>
<p>
and now with Go 1.22, functions in the package are treated as uncovered:
</p>
<p>
<code>mymod/mypack coverage: 0.0% of statements</code>
</p>
<h3 id="cgo">Cgo</h3> <h3 id="cgo">Cgo</h3>
<!-- https://go.dev/issue/56378 --> <!-- https://go.dev/issue/56378 -->