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authorThan McIntosh <thanm@google.com>2024-03-04 15:52:56 +0000
committerThan McIntosh <thanm@google.com>2024-03-04 20:12:49 +0000
commit2b22fc10459dff0fb4b3e5b08bc14ffb349aa4dd (patch)
treeb5a5b1e13bcefe0142178d0be86d1aa2e9fc6a67
parentf1722e9a6e57e4e7b926c4204707f7a15091b5c0 (diff)
downloadgo-2b22fc10459dff0fb4b3e5b08bc14ffb349aa4dd.tar.xz
cmd/go: respect -coverpkg for unselected no-test packages
This patch fixes a bug in the code that reports coverage percentages and/or profiles for packages without tests. Specifically, the code added as part of the fix for issue 24570 (in CL 495447) didn't properly consider the -coverpkg selection and would look for the build action meta-data file for a package that wasn't actually selected for coverage. Fixes #65653. Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest Change-Id: I66ffac11783c00a8cbd855fd05b9a90e4e0ed402 Reviewed-on: https://go-review.googlesource.com/c/go/+/568835 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Bryan Mills <bcmills@google.com>
-rw-r--r--src/cmd/go/internal/test/test.go2
-rw-r--r--src/cmd/go/testdata/script/cover_coverpkg_partial.txt8
2 files changed, 9 insertions, 1 deletions
diff --git a/src/cmd/go/internal/test/test.go b/src/cmd/go/internal/test/test.go
index c3c50b3e0d..08fac5f395 100644
--- a/src/cmd/go/internal/test/test.go
+++ b/src/cmd/go/internal/test/test.go
@@ -1404,7 +1404,7 @@ func (r *runTestActor) Act(b *work.Builder, ctx context.Context, a *work.Action)
if p := a.Package; len(p.TestGoFiles)+len(p.XTestGoFiles) == 0 {
reportNoTestFiles := true
- if cfg.BuildCover && cfg.Experiment.CoverageRedesign {
+ if cfg.BuildCover && cfg.Experiment.CoverageRedesign && p.Internal.Cover.GenMeta {
if err := sh.Mkdir(a.Objdir); err != nil {
return err
}
diff --git a/src/cmd/go/testdata/script/cover_coverpkg_partial.txt b/src/cmd/go/testdata/script/cover_coverpkg_partial.txt
index 524024101a..ef7a4dd2aa 100644
--- a/src/cmd/go/testdata/script/cover_coverpkg_partial.txt
+++ b/src/cmd/go/testdata/script/cover_coverpkg_partial.txt
@@ -39,6 +39,14 @@ go test -coverprofile=baz.p -coverpkg=./a,./d,./f ./b ./f
stdout '^ok\s+M/b\s+\S+\s+coverage: 83.3% of statements in ./a, ./d, ./f'
stdout '^\s*M/f\s+coverage: 0.0% of statements'
+# This sub-test inspired by issue 65653: if package P is is matched
+# via the package pattern supplied as the argument to "go test -cover"
+# but P is not part of "-coverpkg", then we don't want coverage for P
+# (including the specific case where P has no test files).
+go test -coverpkg=./a ./...
+stdout '^ok\s+M/a\s+\S+\s+coverage: 100.0% of statements in ./a'
+stdout '^\s*\?\s+M/f\s+\[no test files\]'
+
-- a/a.go --
package a