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x/build/cmd/golangbuild: run subrepo tests from outside their repositories #34352

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bcmills opened this issue Sep 17, 2019 · 6 comments
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x/build/cmd/golangbuild: run subrepo tests from outside their repositories #34352

bcmills opened this issue Sep 17, 2019 · 6 comments
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@dmitshur
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Builders x/build issues (builders, bots, dashboards) FeatureRequest Issues asking for a new feature that does not need a proposal. modules NeedsFix The path to resolution is known, but the work has not been done. Testing An issue that has been verified to require only test changes, not just a test failure.
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@bcmills
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bcmills commented Sep 17, 2019

(This is essentially the golang.org/x/[…] version of #30316.)

go.mod files in testdata directories cut off the directory from the rest of the module (see #27852). As a result, the corresponding tests are likely to fail.

Unfortunately, at least one of the golang.org/x repos already includes such files: I am aware of some in golang.org/x/tools/go/packages/testdata (CC @heschik, @matloob), and there may be others as well.

Rather than expecting all Go developers to remember to avoid adding extraneous go.mod files, we should configure builders and TryBots to run the tests for golang.org/x modules outside the module, either in addition to or instead of running them from within a cloned repository.

(The simplest alternative I am aware of is to construct a symlink overlay within a temporary directory, as is done in various misc/cgo tests.)

CC @dmitshur @toothrot @bradfitz
@gopherbot gopherbot added this to the Unreleased milestone Sep 17, 2019
@gopherbot gopherbot added the Builders x/build issues (builders, bots, dashboards) label Sep 17, 2019
@bcmills bcmills added Testing An issue that has been verified to require only test changes, not just a test failure. and removed Builders x/build issues (builders, bots, dashboards) labels Sep 17, 2019
@gopherbot gopherbot added the Builders x/build issues (builders, bots, dashboards) label Sep 17, 2019
@bcmills bcmills added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Sep 17, 2019
@bcmills bcmills mentioned this issue Sep 17, 2019
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Change https://golang.org/cl/196258 mentions this issue: go/packages: remove go.mod files

gopherbot pushed a commit to golang/tools that referenced this issue Sep 18, 2019
@heschi
go/packages: remove go.mod files
68f92b6 
Files named go.mod define a module boundary and punch a hole in the
repository when the module is fetched with go get. We had a couple in
testdata. Get rid of them.

In one case the changes I made to produce a module cache in packagestest
were enough. In the other, the test needs multiple minor/patch versions
of the same module, which we have no provision for. Rename them to
"definitelynot_go.mod" in the repo and fix it up in the test.

Updates golang/go#34352

Change-Id: I284578b3aebb0f1fec3ddb4bef0df24f050d0636
Reviewed-on: https://go-review.googlesource.com/c/tools/+/196258
Run-TryBot: Heschi Kreinick <[email protected]>
Reviewed-by: Ian Cottrell <[email protected]>
clintjedwards pushed a commit to clintjedwards/tools that referenced this issue Sep 19, 2019
@heschi @clintjedwards
go/packages: remove go.mod files
472ad66 
Files named go.mod define a module boundary and punch a hole in the
repository when the module is fetched with go get. We had a couple in
testdata. Get rid of them.

In one case the changes I made to produce a module cache in packagestest
were enough. In the other, the test needs multiple minor/patch versions
of the same module, which we have no provision for. Rename them to
"definitelynot_go.mod" in the repo and fix it up in the test.

Updates golang/go#34352

Change-Id: I284578b3aebb0f1fec3ddb4bef0df24f050d0636
Reviewed-on: https://go-review.googlesource.com/c/tools/+/196258
Run-TryBot: Heschi Kreinick <[email protected]>
Reviewed-by: Ian Cottrell <[email protected]>
@dmitshur
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/cc @ianthehat FYI. This is the issue I mentioned to you in person just now.

@dmitshur dmitshur changed the title x/build: run subrepo tests from outside their repositories x/build/cmd/coordinator: run subrepo tests from outside their repositories Oct 11, 2021
@dmitshur dmitshur added NeedsFix The path to resolution is known, but the work has not been done. FeatureRequest Issues asking for a new feature that does not need a proposal. and removed NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels May 31, 2022
@heschi heschi moved this to Planned in Go Release Jan 24, 2023
@dmitshur dmitshur mentioned this issue Jun 7, 2023
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@dmitshur dmitshur self-assigned this Jun 7, 2023
@dmitshur dmitshur moved this from Planned to In Progress in Go Release Jun 7, 2023
@dmitshur
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This is implemented in the new build system (LUCI); see #60666 (comment). At this point I'm confident we won't go back and implement this in x/build/cmd/coordinator, so closing as wontfix.

@dmitshur dmitshur closed this as not planned Won't fix, can't repro, duplicate, stale Jul 25, 2023
@github-project-automation github-project-automation bot moved this from In Progress to Done in Go Release Jul 25, 2023
@bcmills bcmills mentioned this issue Dec 14, 2023
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@bcmills
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bcmills commented Jan 24, 2024 •
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This is implemented in the new build system (LUCI)

The current implementation in LUCI does not appear to have high enough fidelity to catch the sort of problems that motivated this issue. For example, #65258 is not currently caught by the LUCI builders for the x/telemetry subrepo.

Perhaps the tests are currently run from outside their module, but without cutting off the module contents at module boundaries?

At any rate: reopening as “not actually fixed on LUCI”.

@bcmills bcmills reopened this Jan 24, 2024
@bcmills bcmills changed the title x/build/cmd/coordinator: run subrepo tests from outside their repositories x/build: run subrepo tests from outside their repositories Jan 24, 2024
@bcmills bcmills removed this from Go Release Jan 24, 2024
@bcmills bcmills mentioned this issue Jan 24, 2024
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@dmitshur
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dmitshur commented Jan 24, 2024 •
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The reason #65258 is not currently caught by the LUCI builders is because the current implementation requires there not to be local replace directives, and x/telemetry is one of the 3 repos that does, and their owners have decided to opt out of this behavior. See here.

If the local replace directive is removed and x/telemetry owners would like this check to apply, it's a matter of removing "telemetry" from keepNestedModsInsideRepo, but to my knowledge they had no such plans when I last asked about 6 months ago.

@dmitshur dmitshur mentioned this issue Jan 24, 2024
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@dmitshur dmitshur changed the title x/build: run subrepo tests from outside their repositories x/build/cmd/golangbuild: run subrepo tests from outside their repositories Jan 24, 2024
@dmitshur
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This feature was implemented in LUCI and is working for the repos that haven't opted out.
I filed #65267 to track a way of improving it that I'm aware of.

Retitling for LUCI, and closing as fixed via crrev.com/c/4598622 (and crrev.com/c/4651891).
Please file a new issue if something else comes up, and refer to this one if needed.

@gabyhelp gabyhelp mentioned this issue Jul 12, 2024
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@mknyszek mknyszek mentioned this issue Sep 23, 2024
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@dmitshur dmitshur

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Builders x/build issues (builders, bots, dashboards) FeatureRequest Issues asking for a new feature that does not need a proposal. modules NeedsFix The path to resolution is known, but the work has not been done. Testing An issue that has been verified to require only test changes, not just a test failure.
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