! go mod download
stderr '^malformed go.sum:\n.*go.sum:3: wrong number of fields 5\n$'

go mod tidy
cmp go.sum go.sum.after-tidy

-- go.mod --
module m

go 1.20

require rsc.io/quote v1.5.2

require (
	golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c // indirect
	rsc.io/sampler v1.3.0 // indirect
	rsc.io/testonly v1.0.0 // indirect
)

-- go.sum --

        then:
        cancelBuild()

        then:
        daemons.daemon.becomesIdle()

        and:
        pidFile().exists()
        def pid1 = pidFile().text.strip() as long
        new ProcessFixture(pid1).waitForFinish()

        when:
        handler = blockingHttpServer.expectAndBlock("/block")
        startBuild("compileJava")

        then:
        handler.waitForAllPendingCalls()

#
# If a 'replace' directive specifies an older-than-selected version of a module,
# 'go mod tidy' shouldn't try to add that version to the build list to resolve a
# missing package: it won't be selected, and would cause the module loader to
# loop indefinitely trying to resolve the package.

cp go.mod go.mod.orig

! go mod tidy
! stderr panic

grep 'golang.org/x/text [v0-9a-f\.-]+$' go.mod

# indirect tag should be added by go mod tidy
cp $WORK/tmp/usequote.go x.go
go mod tidy
grep 'rsc.io/quote v1.5.2$' go.mod
grep 'golang.org/x/text [v0-9a-f\.-]+ // indirect' go.mod

# requirement should be dropped entirely if not needed
cp $WORK/tmp/uselang.go x.go
go mod tidy
! grep rsc.io/quote go.mod
grep 'golang.org/x/text [v0-9a-f\.-]+$' go.mod

-- go.mod --

}

// String - returns string representation.
func (tid TargetID) String() string {
	return tid.ID + ":" + tid.Name
}

// ToARN - converts to ARN.
func (tid TargetID) ToARN(region string) ARN {
	return ARN{TargetID: tid, region: region}
}

// MarshalJSON - encodes to JSON data.
func (tid TargetID) MarshalJSON() ([]byte, error) {
	return json.Marshal(tid.String())
}

// UnmarshalJSON - decodes JSON data.

            start("3", id2),

            progress("1", id1),
            progress("2", id1),
            progress("3", id1),

            progress("1", id2),
            progress("2", id2),
            progress("3", id2),

            finished("3", id1),
            finished("2", id1),
            progress("1", id1),
            finished("1", id1),

            finished("3", id2),

# basic auth should fail.
env NETRC=$WORK/empty
! go mod tidy
stderr '^\tserver response: ACCESS DENIED, buddy$'
stderr '^\tserver response: File\? What file\?$'

# With credentials from a netrc file, it should succeed.
env NETRC=$WORK/netrc
go mod tidy
go list all
stdout vcs-test.golang.org/auth/or401
stdout vcs-test.golang.org/auth/or404

-- go.mod --

	if !ok {
		return ctx, nil
	}
	childSpan := &Span{t: tc.t, name: name, tid: tc.tid, start: time.Now()}
	tc.t.writeEvent(&format.Event{
		Name:  childSpan.name,
		Time:  float64(childSpan.start.UnixNano()) / float64(time.Microsecond),
		TID:   childSpan.tid,
		Phase: phaseDurationBegin,
	})
	ctx = context.WithValue(ctx, traceKey{}, traceContext{tc.t, tc.tid})
	return ctx, childSpan
}

! go list -deps ./useneedx2
stderr '^go: updates to go.mod needed; to update it:\n\tgo mod tidy$'

! go list -deps example.net/needx2
stderr '^go: updates to go.mod needed; to update it:\n\tgo mod tidy$'


# The command printed in the error message should fix the problem.

go mod tidy
go list -deps ./useneedx2
stdout '^example.net/m/useneedx2$'
stdout '^example.net/needx2$'
stdout '^example.net/x$'

cp go.mod go.mod.orig


# If a dependency cannot be resolved, 'go mod tidy' fails with an error message
# explaining the problem and does not update the go.mod file.
# TODO(bcmills): Ideally, with less redundancy than these error messages!

! go mod tidy

stderr '^go: example.com/untidy imports\n\texample.net/directnotfound: cannot find module providing package example.net/directnotfound: module example.net/directnotfound: reading http://.*: 404 Not Found$'