# Check that 'go get' adds sums for updated modules if we had sums before,
# even if we didn't load packages from them.
# Verifies #44129.

env fmt='{{.ImportPath}}: {{if .Error}}{{.Error.Err}}{{else}}ok{{end}}'

# Control case: before upgrading, we have the sums we need.
# go list -deps -e -f $fmt .
# stdout '^rsc.io/quote: ok$'
# ! stdout rsc.io/sampler  # not imported by quote in this version
cp go.mod.orig go.mod
cp go.sum.orig go.sum
go mod tidy

// license that can be found in the LICENSE file.

// Package adler32 implements the Adler-32 checksum.
//
// It is defined in RFC 1950:
//
//	Adler-32 is composed of two sums accumulated per byte: s1 is
//	the sum of all bytes, s2 is the sum of all s1 values. Both sums
//	are done modulo 65521. s1 is initialized to 1, s2 to zero.  The
//	Adler-32 checksum is stored as s2*65536 + s1 in most-
//	significant-byte first (network) order.

! exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.1.mod
! exists go.sum
cp go.mod.orig go.mod

# Control: when sums are present, loading the build list downloads .mod files.
cp go.sum.buildlistonly go.sum
go list -m all
exists $GOPATH/pkg/mod/cache/download/rsc.io/quote/@v/v1.5.2.mod

stdout '^example.com/ambiguous/a/b v0.0.0-empty$'

# If two modules could provide a package, but only one does,
# 'go mod tidy' should retain sums for both zips.
go mod tidy
grep '^example.com/ambiguous/a v1.0.0 h1:' go.sum
grep '^example.com/ambiguous/a/b v0.0.0-empty h1:' go.sum

# 'go mod download' should also add sums.
cp go.sum.buildlist-only go.sum
go mod download example.com/ambiguous/a
grep '^example.com/ambiguous/a v1.0.0 h1:' go.sum

# Test mismatched sums in go.sum files

! go run ./a
cmpenv stderr want-error

-- want-error --
verifying rsc.io/sampler@v1.3.0/go.mod: checksum mismatch
	downloaded: h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
	$WORK${/}gopath${/}src${/}a${/}go.sum:     h1:U1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

SECURITY ERROR
This download does NOT match an earlier download recorded in go.sum.

	for _, pi := range s {
		sum += *pi
	}
	return sum
}

func main() {
	af := a.F()
	bf, _ := b.F()
	abf := a.Fb()

	saf, sbf, sabf := sum(af), sum(bf), sum(abf)

	fmt.Printf("af, bf, abf sums = %d, %d, %d\n", saf, sbf, sabf)

# When 'go get' is invoked on a module without a package in the root directory,
# it should add sums for the module's go.mod file and its content to go.sum.
# Verifies golang.org/issue/41103.
go mod init m
go get rsc.io/QUOTE
grep '^rsc.io/QUOTE v1.5.2/go.mod ' go.sum
grep '^rsc.io/QUOTE v1.5.2 ' go.sum

# Double-check rsc.io/QUOTE does not have a root package.
! go list -mod=readonly rsc.io/QUOTE

	burstableCPUShares := MilliCPUToShares(burstablePodCPURequest)
	configs[v1.PodQOSBurstable].ResourceParameters.CPUShares = &burstableCPUShares
	return nil
}

// getQoSMemoryRequests sums and returns the memory request of all pods for
// guaranteed and burstable qos classes.
func (m *qosContainerManagerImpl) getQoSMemoryRequests() map[v1.PodQOSClass]int64 {
	qosMemoryRequests := map[v1.PodQOSClass]int64{

// An MMUCurve is the minimum mutator utilization curve across
// multiple window sizes.
type MMUCurve struct {
	series []mmuSeries
}

type mmuSeries struct {
	util []MutatorUtil
	// sums[j] is the cumulative sum of util[:j].
	sums []totalUtil
	// bands summarizes util in non-overlapping bands of duration
	// bandDur.
	bands []mmuBand
	// bandDur is the duration of each band.
	bandDur int64
}

// an associated `fairProp float64`, that jointly have
// all of the following properties (to the degree that floating point calculations allow)
// if possible otherwise returns an error saying why it is impossible.
// `allocs` sums to `requiredSum`.
// For each J in [0, len(classes)):
//  1. `classes[J].lowerBound <= allocs[J] <= classes[J].upperBound` and
//  2. exactly one of the following is true: