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cmd/go,testdeps: move import of internal/coverage/cfile to testmain

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Instead of having testing/internal/testdeps import the
internal/coverage/cfile package directly, have the code in testmain
pass in pointers to cfile functions during setup in the case that
we're running a "go test -cover" binary. This reduces the size of
regular non-coverage test binaries back to what they were before CL
585820.

Updates #67401.
Fixes #67588.

Change-Id: Iaf1a613bc7d3c9df9943189065d0161ca9120d34
Reviewed-on: https://go-review.googlesource.com/c/go/+/587795
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Than McIntosh 2024-05-23 13:07:31 +00:00
parent f109bdd127
commit 9b5d27faf9
2 changed files with 23 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/cmd/go/internal/load/test.go
View File

@ -298,6 +298,9 @@ func TestPackagesAndErrors(ctx context.Context, done func(), opts PackageOpts, p
// Also the linker introduces implicit dependencies reported by LinkerDeps. // Also the linker introduces implicit dependencies reported by LinkerDeps.
stk.Push("testmain") stk.Push("testmain")
deps := TestMainDeps // cap==len, so safe for append deps := TestMainDeps // cap==len, so safe for append
if cover != nil && cfg.Experiment.CoverageRedesign {
deps = append(deps, "internal/coverage/cfile")
}
ldDeps, err := LinkerDeps(p) ldDeps, err := LinkerDeps(p)
if err != nil && pmain.Error == nil { if err != nil && pmain.Error == nil {
pmain.Error = &PackageError{Err: err} pmain.Error = &PackageError{Err: err}
@ -907,6 +910,9 @@ import (
{{end}} {{end}}
"testing" "testing"
"testing/internal/testdeps" "testing/internal/testdeps"
{{if .Cover}}
"internal/coverage/cfile"
{{end}}
{{if .ImportTest}} {{if .ImportTest}}
{{if .NeedTest}}_test{{else}}_{{end}} {{.Package.ImportPath | printf "%q"}} {{if .NeedTest}}_test{{else}}_{{end}} {{.Package.ImportPath | printf "%q"}}
@ -944,6 +950,10 @@ func init() {
{{if .Cover}} {{if .Cover}}
testdeps.CoverMode = {{printf "%q" .Cover.Mode}} testdeps.CoverMode = {{printf "%q" .Cover.Mode}}
testdeps.Covered = {{printf "%q" .Covered}} testdeps.Covered = {{printf "%q" .Covered}}
testdeps.CoverSnapshotFunc = cfile.Snapshot
testdeps.CoverProcessTestDirFunc = cfile.ProcessCoverTestDir
testdeps.CoverMarkProfileEmittedFunc = cfile.MarkProfileEmitted
{{end}} {{end}}
testdeps.ImportPath = {{.ImportPath | printf "%q"}} testdeps.ImportPath = {{.ImportPath | printf "%q"}}
} }

17
src/testing/internal/testdeps/deps.go
View File

@ -13,7 +13,6 @@ package testdeps
import ( import (
"bufio" "bufio"
"context" "context"
"internal/coverage/cfile"
"internal/fuzz" "internal/fuzz"
"internal/testlog" "internal/testlog"
"io" "io"
@ -205,11 +204,21 @@ func (TestDeps) SnapshotCoverage() {
var CoverMode string var CoverMode string
var Covered string var Covered string
// These variables below are set at runtime (via code in testmain) to point
// to the equivalent functions in package internal/coverage/cfile; doing
// things this way allows us to have tests import internal/coverage/cfile
// only when -cover is in effect (as opposed to importing for all tests).
var (
CoverSnapshotFunc func() float64
CoverProcessTestDirFunc func(dir string, cfile string, cm string, cpkg string, w io.Writer) error
CoverMarkProfileEmittedFunc func(val bool)
)
func (TestDeps) InitRuntimeCoverage() (mode string, tearDown func(string, string) (string, error), snapcov func() float64) { func (TestDeps) InitRuntimeCoverage() (mode string, tearDown func(string, string) (string, error), snapcov func() float64) {
if CoverMode == "" { if CoverMode == "" {
return return
} }
return CoverMode, coverTearDown, cfile.Snapshot return CoverMode, coverTearDown, CoverSnapshotFunc
} }
func coverTearDown(coverprofile string, gocoverdir string) (string, error) { func coverTearDown(coverprofile string, gocoverdir string) (string, error) {
@ -221,9 +230,9 @@ func coverTearDown(coverprofile string, gocoverdir string) (string, error) {
} }
defer os.RemoveAll(gocoverdir) defer os.RemoveAll(gocoverdir)
} }
cfile.MarkProfileEmitted(true) CoverMarkProfileEmittedFunc(true)
cmode := CoverMode cmode := CoverMode
if err := cfile.ProcessCoverTestDir(gocoverdir, coverprofile, cmode, Covered, os.Stdout); err != nil { if err := CoverProcessTestDirFunc(gocoverdir, coverprofile, cmode, Covered, os.Stdout); err != nil {
return "error generating coverage report", err return "error generating coverage report", err
} }
return "", nil return "", nil