Spec: api.PodSpec{
			Containers:          []api.Container{{}},
			InitContainers:      []api.Container{{}},
			EphemeralContainers: []api.EphemeralContainer{{}},
		},
	}

	var noPod *api.Pod

	testcases := []struct {
		description string
		enabled     bool
		oldPod      *api.Pod
		newPod      *api.Pod
		wantPod     *api.Pod
	}{
		{

			err:        "not bound to a pod",
		},
		{
			name:       "forbid create of token bound to nonexistant pod",
			podsGetter: noExistingPods,
			attributes: admission.NewAttributesRecord(makeTokenRequest("nopod", "someuid"), nil, tokenrequestKind, "ns", "mysa", svcacctResource, "token", admission.Create, &metav1.CreateOptions{}, false, mynode),
			err:        "not found",
		},
		{

Constructed by hand.
(derived from rsc.io/quote@e7a685a342, but without an explicit go.mod file.)

-- .mod --
module "not-rsc.io/quote"
-- .info --
{"Version":"v0.1.0-nomod","Time":"2018-02-14T00:51:33Z"}
-- quote.go --
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package quote collects pithy sayings.

{
	"Replace": {
		"nomod/go.mod": "../../../overlay/carve-nomod-go-mod"
	}
}
-- carve/overlay_uncarve_module.json --
{
	"Replace": {
		"hasmod/go.mod": ""
	}
}
-- carve/hasmod/a.go --
package hasmod
-- carve/hasmod/go.mod --
module carve/hasmod
-- carve/nomod/b.go --
package nomod
-- $WORK/overlay/carve-nomod-go-mod --
module carve/nomod
-- carve2/go.mod --
module carve2

	}

	// various other types
	pkg := NewPackage("p", "p")
	t1 := NewTypeName(nopos, pkg, "t1", nil)
	n1 := NewNamed(t1, new(Struct), nil)
	t5 := NewTypeName(nopos, pkg, "t5", nil)
	NewTypeParam(t5, nil)
	for _, test := range []struct {
		name  *TypeName
		alias bool
	}{
		{NewTypeName(nopos, nil, "t0", nil), false}, // no type yet
		{NewTypeName(nopos, pkg, "t0", nil), false}, // no type yet

go mod download rsc.io/quote/v3
go list -m -f '{{.Path}} {{.Version}} {{.Dir}} {{.GoMod}}{{with .Replace}} => {{.Path}} {{.Version}} {{.Dir}} {{.GoMod}}{{end}}' rsc.io/quote/v3

	}

	// various other types
	pkg := NewPackage("p", "p")
	t1 := NewTypeName(nopos, pkg, "t1", nil)
	n1 := NewNamed(t1, new(Struct), nil)
	t5 := NewTypeName(nopos, pkg, "t5", nil)
	NewTypeParam(t5, nil)
	for _, test := range []struct {
		name  *TypeName
		alias bool
	}{
		{NewTypeName(nopos, nil, "t0", nil), false}, // no type yet
		{NewTypeName(nopos, pkg, "t0", nil), false}, // no type yet

		recv := NewVar(nopos, nil, "", typ)
		res := NewVar(nopos, nil, "", Typ[String])
		sig := NewSignatureType(recv, nil, nil, nil, NewTuple(res), false)
		err := NewFunc(nopos, nil, "Error", sig)

		// interface{ Error() string }
		ityp := &Interface{methods: []*Func{err}, complete: true}
		computeInterfaceTypeSet(nil, nopos, ityp) // prevent races due to lazy computation of tset

		typ.SetUnderlying(ityp)
		def(obj)

		recv := NewVar(nopos, nil, "", typ)
		res := NewVar(nopos, nil, "", Typ[String])
		sig := NewSignatureType(recv, nil, nil, nil, NewTuple(res), false)
		err := NewFunc(nopos, nil, "Error", sig)

		// interface{ Error() string }
		ityp := &Interface{methods: []*Func{err}, complete: true}
		computeInterfaceTypeSet(nil, nopos, ityp) // prevent races due to lazy computation of tset

		typ.SetUnderlying(ityp)
		def(obj)

	var tab PosTable
	if tab.Pos(NoXPos) != NoPos {
		t.Errorf("failed to translate NoXPos to Pos using zero PosTable")
	}
}

func TestConversion(t *testing.T) {
	b1 := NewFileBase("b1", "b1")
	b2 := NewFileBase("b2", "b2")
	b3 := NewLinePragmaBase(MakePos(b1, 10, 0), "b3", "b3", 123, 0)

	var tab PosTable
	for _, want := range []Pos{
		NoPos,
		MakePos(nil, 0, 0), // same table entry as NoPos