Russ Cox (Gerrit)

unread,

Nov 6, 2025, 5:18:30 AM (5 days ago) Nov 6

to Ian Alexander, Michael Matloob, goph...@pubsubhelper.golang.org, Michael Pratt, Russ Cox, golang-co...@googlegroups.com

Attention needed from Ian Alexander and Michael Matloob

Russ Cox has uploaded the change for review

Russ Cox would like Ian Alexander and Michael Matloob to review this change.

Commit message

cmd/go: copy git reuse and support repos to hg

These are exact copies of the git files,
not used and not updated for use with hg.
That will be in a separate CL.
This CL just makes the diffs in the next CL more readable.

For #75119.

Change-Id: I50c7f5559ee6479f8328ed54c14eafcc7f1ecc1f

Change diff

diff --git a/src/cmd/go/testdata/script/reuse_hg.txt b/src/cmd/go/testdata/script/reuse_hg.txt
new file mode 100644
index 0000000..42516ce
--- /dev/null
+++ b/src/cmd/go/testdata/script/reuse_hg.txt
@@ -0,0 +1,463 @@
+skip # still git
+
+[short] skip
+[!git] skip
+
+env GO111MODULE=on
+env GOPROXY=direct
+env GOSUMDB=off
+
+# go mod download with the pseudo-version should invoke git but not have a TagSum or Ref.
+go mod download -x -json vcs-test.golang.org/git/hell...@v0.0.0-20170922010558-fc3a09f3dc5c
+stderr 'git( .*)* fetch'
+cp stdout hellopseudo.json
+! stdout '"(Query|TagPrefix|TagSum|Ref)"'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"RepoSum"'
+go clean -modcache
+
+# go mod download vcstest/hello should invoke git, print origin info
+go mod download -x -json vcs-test.golang.org/git/hello.git@latest
+stderr 'git( .*)* fetch'
+cp stdout hello.json
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+stdout '"Query": "latest"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"RepoSum"'
+
+# pseudo-version again should not invoke git fetch (it has the version from the @latest query)
+# but still be careful not to include a TagSum or a Ref, especially not Ref set to HEAD,
+# which is easy to do when reusing the cached version from the @latest query.
+go mod download -x -json vcs-test.golang.org/git/hell...@v0.0.0-20170922010558-fc3a09f3dc5c
+! stderr 'git( .*)* fetch'
+cp stdout hellopseudo2.json
+cmpenv hellopseudo.json hellopseudo2.json
+
+# go mod download vcstest/hello@hash needs to check TagSum to find pseudoversion base.
+go mod download -x -json vcs-test.golang.org/git/hello.git@fc3a09f3dc5c
+! stderr 'git( .*)* fetch'
+cp stdout hellohash.json
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"Query": "fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"RepoSum"'
+
+# go mod download vcstest/hello/v9 should fail, still print origin info
+! go mod download -x -json vcs-test.golang.org/git/hello.git/v9@latest
+cp stdout hellov9.json
+stdout '"Version": "latest"'
+stdout '"Error":.*no matching versions'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout 'RepoSum'
+
+# go mod download vcstest/hello/sub/v9 should also fail, print origin info with TagPrefix
+! go mod download -x -json vcs-test.golang.org/git/hello.git/sub/v9@latest
+cp stdout hellosubv9.json
+stdout '"Version": "latest"'
+stdout '"Error":.*no matching versions'
+stdout '"TagPrefix": "sub/"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout 'RepoSum'
+
+# go mod download vcstest/hello@nonexist should fail, still print origin info
+! go mod download -x -json vcs-test.golang.org/git/hello.git@nonexist
+cp stdout hellononexist.json
+stdout '"Version": "nonexist"'
+stdout '"Error":.*unknown revision nonexist'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+
+# go mod download vcstest/hello@1234567890123456789012345678901234567890 should fail, still print origin info
+# (40 hex digits is assumed to be a full hash and is a slightly different code path from @nonexist)
+! go mod download -x -json vcs-test.golang.org/git/hello.git@1234567890123456789012345678901234567890
+cp stdout hellononhash.json
+stdout '"Version": "1234567890123456789012345678901234567890"'
+stdout '"Error":.*unknown revision 1234567890123456789012345678901234567890'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+
+# go mod download vcstest/he...@v0.0.0-20220101120101-123456789abc should fail, still print origin info
+# (non-existent pseudoversion)
+! go mod download -x -json vcs-test.golang.org/git/hell...@v0.0.0-20220101120101-123456789abc
+cp stdout hellononpseudo.json
+stdout '"Version": "v0.0.0-20220101120101-123456789abc"'
+stdout '"Error":.*unknown revision 123456789abc'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+
+# go mod download vcstest/tagtests should invoke git, print origin info
+go mod download -x -json vcs-test.golang.org/git/tagtests.git@latest
+stderr 'git( .*)* fetch'
+cp stdout tagtests.json
+stdout '"Version": "v0.2.2"'
+stdout '"Query": "latest"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/tags/v0.2.2"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+! stdout '"RepoSum"'
+
+# go mod download vcstest/tagt...@v0.2.2 should print origin info, no TagSum needed
+go mod download -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+cp stdout tagtestsv022.json
+stdout '"Version": "v0.2.2"'
+! stdout '"Query":'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+! stdout '"TagSum"'
+stdout '"Ref": "refs/tags/v0.2.2"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+! stdout '"RepoSum"'
+
+# go mod download vcstest/tagtests@master needs a TagSum again
+go mod download -x -json vcs-test.golang.org/git/tagtests.git@master
+cp stdout tagtestsmaster.json
+stdout '"Version": "v0.2.3-0.20190509225625-c7818c24fa2f"'
+stdout '"Query": "master"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/heads/master"'
+stdout '"Hash": "c7818c24fa2f3f714c67d0a6d3e411c85a518d1f"'
+! stdout '"RepoSum"'
+
+# go mod download vcstest/prefixtagtests should invoke git, print origin info
+go mod download -x -json vcs-test.golang.org/git/prefixtagtests.git/sub@latest
+stderr 'git( .*)* fetch'
+cp stdout prefixtagtests.json
+stdout '"Version": "v0.0.10"'
+stdout '"Query": "latest"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/prefixtagtests"'
+stdout '"Subdir": "sub"'
+stdout '"TagPrefix": "sub/"'
+stdout '"TagSum": "t1:YGSbWkJ8dn9ORAr[+]BlKHFK/2ZhXLb9hVuYfTZ9D8C7g="'
+stdout '"Ref": "refs/tags/sub/v0.0.10"'
+stdout '"Hash": "2b7c4692e12c109263cab51b416fcc835ddd7eae"'
+! stdout '"RepoSum"'
+
+# go mod download of a bunch of these should fail (some are invalid) but write good JSON for later
+! go mod download -json vcs-test.golang.org/git/hello.git@latest vcs-test.golang.org/git/hello.git/v9@latest vcs-test.golang.org/git/hello.git/sub/v9@latest vcs-test.golang.org/git/tagtests.git@latest vcs-test.golang.org/git/tagtes...@v0.2.2 vcs-test.golang.org/git/tagtests.git@master
+cp stdout all.json
+
+# clean the module cache, make sure that makes go mod download re-run git fetch, clean again
+go clean -modcache
+go mod download -x -json vcs-test.golang.org/git/hello.git@latest
+stderr 'git( .*)* fetch'
+go clean -modcache
+
+# reuse go mod download vcstest/hello result
+go mod download -reuse=hello.json -x -json vcs-test.golang.org/git/hello.git@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/hello pseudoversion result
+go mod download -reuse=hellopseudo.json -x -json vcs-test.golang.org/git/hell...@v0.0.0-20170922010558-fc3a09f3dc5c
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+! stdout '"(Query|TagPrefix|TagSum|Ref)"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/hello@hash
+go mod download -reuse=hellohash.json -x -json vcs-test.golang.org/git/hello.git@fc3a09f3dc5c
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Query": "fc3a09f3dc5c"'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+! stdout '"(TagPrefix|Ref)"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/hello/v9 error result
+! go mod download -reuse=hellov9.json -x -json vcs-test.golang.org/git/hello.git/v9@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Error":.*no matching versions'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/hello/sub/v9 error result
+! go mod download -reuse=hellosubv9.json -x -json vcs-test.golang.org/git/hello.git/sub/v9@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Error":.*no matching versions'
+stdout '"TagPrefix": "sub/"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Ref": "HEAD"'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/hello@nonexist
+! go mod download -reuse=hellononexist.json -x -json vcs-test.golang.org/git/hello.git@nonexist
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "nonexist"'
+stdout '"Error":.*unknown revision nonexist'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+! stdout '"(Dir|Info|GoMod|Zip)"'
+
+# reuse go mod download vcstest/hello@1234567890123456789012345678901234567890
+! go mod download -reuse=hellononhash.json -x -json vcs-test.golang.org/git/hello.git@1234567890123456789012345678901234567890
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "1234567890123456789012345678901234567890"'
+stdout '"Error":.*unknown revision 1234567890123456789012345678901234567890'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+! stdout '"(Dir|Info|GoMod|Zip)"'
+
+# reuse go mod download vcstest/he...@v0.0.0-20220101120101-123456789abc
+! go mod download -reuse=hellononpseudo.json -x -json vcs-test.golang.org/git/hell...@v0.0.0-20220101120101-123456789abc
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.0.0-20220101120101-123456789abc"'
+stdout '"Error":.*unknown revision 123456789abc'
+stdout '"RepoSum": "r1:c0/9JCZ25lxoBiK3[+]3BhACU4giH49flcJmBynJ[+]Jvmc="'
+! stdout '"(TagPrefix|TagSum|Ref|Hash)"'
+! stdout '"(Dir|Info|GoMod|Zip)"'
+
+# reuse go mod download vcstest/tagtests result
+go mod download -reuse=tagtests.json -x -json vcs-test.golang.org/git/tagtests.git@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.2.2"'
+stdout '"Query": "latest"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/tags/v0.2.2"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/tagt...@v0.2.2 result
+go mod download -reuse=tagtestsv022.json -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.2.2"'
+! stdout '"Query":'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+! stdout '"TagSum"'
+stdout '"Ref": "refs/tags/v0.2.2"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/tagtests@master result
+go mod download -reuse=tagtestsmaster.json -x -json vcs-test.golang.org/git/tagtests.git@master
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.2.3-0.20190509225625-c7818c24fa2f"'
+stdout '"Query": "master"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/heads/master"'
+stdout '"Hash": "c7818c24fa2f3f714c67d0a6d3e411c85a518d1f"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# reuse go mod download vcstest/tagtests@master result again with all.json
+go mod download -reuse=all.json -x -json vcs-test.golang.org/git/tagtests.git@master
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Version": "v0.2.3-0.20190509225625-c7818c24fa2f"'
+stdout '"Query": "master"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/heads/master"'
+stdout '"Hash": "c7818c24fa2f3f714c67d0a6d3e411c85a518d1f"'
+! stdout '"(Dir|Info|GoMod|Zip|RepoSum)"'
+
+# go mod download vcstest/prefixtagtests result with json
+go mod download -reuse=prefixtagtests.json -x -json vcs-test.golang.org/git/prefixtagtests.git/sub@latest
+! stderr 'git( .*)* fetch'
+stdout '"Version": "v0.0.10"'
+stdout '"Query": "latest"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/prefixtagtests"'
+stdout '"Subdir": "sub"'
+stdout '"TagPrefix": "sub/"'
+stdout '"TagSum": "t1:YGSbWkJ8dn9ORAr[+]BlKHFK/2ZhXLb9hVuYfTZ9D8C7g="'
+stdout '"Ref": "refs/tags/sub/v0.0.10"'
+stdout '"Hash": "2b7c4692e12c109263cab51b416fcc835ddd7eae"'
+! stdout '"(Dir|Info|GoMod|Zip)"'
+
+# reuse the bulk results with all.json
+! go mod download -reuse=all.json -json vcs-test.golang.org/git/hello.git@latest vcs-test.golang.org/git/hello.git/v9@latest vcs-test.golang.org/git/hello.git/sub/v9@latest vcs-test.golang.org/git/tagtests.git@latest vcs-test.golang.org/git/tagtes...@v0.2.2 vcs-test.golang.org/git/tagtests.git@master
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+! stdout '"(Dir|Info|GoMod|Zip)"'
+
+# reuse attempt with stale hash should reinvoke git, not report reuse
+cp tagtestsv022.json tagtestsv022badhash.json
+replace '57952' '56952XXX' tagtestsv022badhash.json
+go mod download -reuse=tagtestsv022badhash.json -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+stderr 'git( .*)* fetch'
+! stdout '"Reuse": true'
+stdout '"Version": "v0.2.2"'
+! stdout '"Query"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"(TagPrefix|TagSum|RepoSum)"'
+stdout '"Ref": "refs/tags/v0.2.2"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+stdout '"Dir"'
+stdout '"Info"'
+stdout '"GoMod"'
+stdout '"Zip"'
+
+# reuse with stale repo URL
+cp tagtestsv022.json tagtestsv022badurl.json
+replace 'git/tagtests\"' 'git/tagtestsXXX\"' tagtestsv022badurl.json
+go mod download -reuse=tagtestsv022badurl.json -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+! stdout '"Reuse": true'
+stdout '"URL": ".*/git/tagtests"'
+stdout '"Dir"'
+stdout '"Info"'
+stdout '"GoMod"'
+stdout '"Zip"'
+
+# reuse with stale VCS
+cp tagtestsv022.json tagtestsv022badvcs.json
+replace '\"git\"' '\"gitXXX\"' tagtestsv022badvcs.json
+go mod download -reuse=tagtestsv022badvcs.json -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+! stdout '"Reuse": true'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"RepoSum"'
+
+# reuse with stale Dir
+cp tagtestsv022.json tagtestsv022baddir.json
+replace '\t\t\"Ref\":' '\t\t\"Subdir\": \"subdir\",\n\t\t\"Ref\":' tagtestsv022baddir.json
+go mod download -reuse=tagtestsv022baddir.json -x -json vcs-test.golang.org/git/tagtes...@v0.2.2
+! stdout '"Reuse": true'
+stdout '"URL": ".*/git/tagtests"'
+! stdout '"RepoSum"'
+
+# reuse with stale TagSum
+cp tagtests.json tagtestsbadtagsum.json
+replace 'sMEOGo=' 'sMEoGo=XXX' tagtestsbadtagsum.json
+go mod download -reuse=tagtestsbadtagsum.json -x -json vcs-test.golang.org/git/tagtests.git@latest
+! stdout '"Reuse": true'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+! stdout '"RepoSum"'
+
+# go list on repo with no tags
+go clean -modcache
+go list -x -json -m -retracted -json=Version,Versions,Error,Path,Query,Origin,Reuse -versions vcs-test.golang.org/git/hello.git@latest
+stderr 'git( .*)* fetch'
+cp stdout hellolist.json
+! stdout '"Versions"'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+stdout '"Query": "latest"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"RepoSum"'
+
+# reuse go list on repo with no tags
+go clean -modcache
+go list -x -reuse=hellolist.json -json -m -retracted -versions vcs-test.golang.org/git/hello.git@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+! stdout '"Versions"'
+stdout '"Version": "v0.0.0-20170922010558-fc3a09f3dc5c"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/hello"'
+stdout '"Query": "latest"'
+! stdout '"TagPrefix"'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+stdout '"Hash": "fc3a09f3dc5cfe0d7a743ea18f1f5226e68b3777"'
+! stdout '"RepoSum"'
+
+# reuse with stale list
+cp hellolist.json hellolistbad.json
+replace '47DEQ' 'ZZZ' hellolistbad.json
+go clean -modcache
+go list -x -reuse=hellolistbad.json -json -m -retracted -versions vcs-test.golang.org/git/hello.git@latest
+stderr 'git( .*)* fetch'
+! stdout '"Reuse": true'
+stdout '"TagSum": "t1:47DEQpj8HBSa[+]/TImW[+]5JCeuQeRkm5NMpJWZG3hSuFU="'
+
+# go list on repo with tags
+go clean -modcache
+go list -x -json -m -retracted -json=Version,Versions,Error,Path,Query,Origin,Reuse -versions vcs-test.golang.org/git/tagtests.git@latest
+cp stdout taglist.json
+stderr 'git( .*)* fetch'
+stdout '"Versions":'
+stdout '"v0.2.1"'
+stdout '"v0.2.2"'
+stdout '"Version": "v0.2.2"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/tags/v0.2.2"'
+
+# reuse go list on repo with tags
+go clean -modcache
+go list -reuse=taglist.json -x -json -m -retracted -json=Version,Versions,Error,Path,Query,Origin,Reuse -versions vcs-test.golang.org/git/tagtests.git@latest
+! stderr 'git( .*)* fetch'
+stdout '"Reuse": true'
+stdout '"Versions":'
+stdout '"v0.2.1"'
+stdout '"v0.2.2"'
+stdout '"Version": "v0.2.2"'
+stdout '"VCS": "git"'
+stdout '"URL": ".*/git/tagtests"'
+stdout '"Hash": "59356c8cd18c5fe9a598167d98a6843e52d57952"'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
+stdout '"Ref": "refs/tags/v0.2.2"'
+
+# reuse with stale list
+cp taglist.json taglistbad.json
+replace 'Dp7yRKDu' 'ZZZ' taglistbad.json
+go clean -modcache
+go list -reuse=taglistbad.json -x -json -m -retracted -json=Version,Versions,Error,Path,Query,Origin,Reuse -versions vcs-test.golang.org/git/tagtests.git@latest
+stderr 'git( .*)* fetch'
+! stdout '"Reuse": true'
+stdout '"TagSum": "t1:Dp7yRKDuE8WjG0429PN9hYWjqhy2te7P9Oki/sMEOGo="'
diff --git a/src/cmd/go/testdata/vcstest/hg/prefixtagtests.txt b/src/cmd/go/testdata/vcstest/hg/prefixtagtests.txt
new file mode 100644
index 0000000..6c89c85
--- /dev/null
+++ b/src/cmd/go/testdata/vcstest/hg/prefixtagtests.txt
@@ -0,0 +1,53 @@
+handle git
+
+env GIT_AUTHOR_NAME='Jay Conrod'
+env GIT_AUTHOR_EMAIL='jayc...@google.com'
+env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
+env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL
+
+at 2019-05-09T18:35:00-04:00
+
+git init
+
+git add sub
+git commit -m 'create module sub'
+git branch -m master
+
+echo 'v0.1.0'
+cp stdout status
+git add status
+git commit -a -m 'v0.1.0'
+git tag 'v0.1.0'
+
+echo 'sub/v0.0.9'
+cp stdout status
+git commit -a -m 'sub/v0.0.9'
+git tag 'sub/v0.0.9'
+
+echo 'sub/v0.0.10'
+cp stdout status
+git commit -a -m 'sub/v0.0.10'
+git tag 'sub/v0.0.10'
+
+echo 'v0.2.0'
+cp stdout status
+git commit -a -m 'v0.2.0'
+git tag 'v0.2.0'
+
+echo 'after last tag'
+cp stdout status
+git commit -a -m 'after last tag'
+
+git show-ref --tags --heads
+cmp stdout .git-refs
+
+-- .git-refs --
+c3ee5d0dfbb9bf3c4d8bb2bce24cd8d14d2d4238 refs/heads/master
+2b7c4692e12c109263cab51b416fcc835ddd7eae refs/tags/sub/v0.0.10
+883885166298d79a0561d571a3044ec5db2e7c28 refs/tags/sub/v0.0.9
+db89fc573cfb939faf0aa0660671eb4cf8b8b673 refs/tags/v0.1.0
+1abe41965749e50828dd41de8d12c6ebc8e4e131 refs/tags/v0.2.0
+-- sub/go.mod --
+module vcs-test.golang.org/git/prefixtagtests.git/sub
+-- sub/sub.go --
+package sub
diff --git a/src/cmd/go/testdata/vcstest/hg/tagtests.txt b/src/cmd/go/testdata/vcstest/hg/tagtests.txt
new file mode 100644
index 0000000..92e79cd
--- /dev/null
+++ b/src/cmd/go/testdata/vcstest/hg/tagtests.txt
@@ -0,0 +1,44 @@
+handle git
+
+env GIT_AUTHOR_NAME='Jay Conrod'
+env GIT_AUTHOR_EMAIL='jayc...@google.com'
+env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
+env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL
+
+at 2019-05-09T18:56:25-04:00
+
+git init
+
+git add go.mod tagtests.go
+git commit -m 'create module tagtests'
+git branch -m master
+git branch b
+
+git add v0.2.1
+git commit -m 'v0.2.1'
+git tag 'v0.2.1'
+
+git checkout b
+git add 'v0.2.2'
+git commit -m 'v0.2.2'
+git tag 'v0.2.2'
+
+git checkout master
+git merge b -m 'merge'
+
+git show-ref --tags --heads
+cmp stdout .git-refs
+
+-- .git-refs --
+59356c8cd18c5fe9a598167d98a6843e52d57952 refs/heads/b
+c7818c24fa2f3f714c67d0a6d3e411c85a518d1f refs/heads/master
+101c49f5af1b2466332158058cf5f03c8cca6429 refs/tags/v0.2.1
+59356c8cd18c5fe9a598167d98a6843e52d57952 refs/tags/v0.2.2
+-- go.mod --
+module vcs-test.golang.org/git/tagtests.git
+-- tagtests.go --
+package tagtests
+-- v0.2.1 --
+v0.2.1
+-- v0.2.2 --
+v0.2.2

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Files:

A src/cmd/go/testdata/script/reuse_hg.txt
A src/cmd/go/testdata/vcstest/hg/prefixtagtests.txt
A src/cmd/go/testdata/vcstest/hg/tagtests.txt

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Delta: 3 files changed, 560 insertions(+), 0 deletions(-)

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Commit message:

cmd/go: copy git reuse and support repos to hg

The reuse_hg.txt is reuse_git.txt with a skip at the top
and a global substitute of git->hg and fetch->pull.

The prefixtagtests.txt and tagtests.txt are straight
copies of the git equivalents.

This is to set up a readable diff in the followup CL
that turns it into a reuse test for hg.

For #75119.

Change-Id: I50c7f5559ee6479f8328ed54c14eafcc7f1ecc1f

Reviewed-on: https://go-review.googlesource.com/c/go/+/718381

Reviewed-by: Michael Matloob <mat...@golang.org>

Reviewed-by: Michael Matloob <mat...@google.com>

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Files:

A src/cmd/go/testdata/script/reuse_hg.txt
A src/cmd/go/testdata/vcstest/hg/prefixtagtests.txt
A src/cmd/go/testdata/vcstest/hg/tagtests.txt

Change size: L

Delta: 3 files changed, 580 insertions(+), 0 deletions(-)

Branch: refs/heads/master

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