agent: add grpc interface for stat and resize operations

Add GetVolumeStats and ResizeVolume APIs for the runtime to query stat
and resize fs in the guest.

Fixes: #3454

Signed-off-by: Feng Wang <feng.wang@databricks.com>

src/runtime/virtcontainers/pkg/agent/protocols/grpc/csipb_test.go

@@ -0,0 +1,585 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: github.com/kata-containers/kata-containers/src/libs/protocols/protos/csi.proto
+
+package grpc
+
+import (
+	fmt "fmt"
+	_ "github.com/gogo/protobuf/gogoproto"
+	github_com_gogo_protobuf_jsonpb "github.com/gogo/protobuf/jsonpb"
+	github_com_gogo_protobuf_proto "github.com/gogo/protobuf/proto"
+	proto "github.com/gogo/protobuf/proto"
+	math "math"
+	math_rand "math/rand"
+	testing "testing"
+	time "time"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+func TestVolumeStatsResponseProto(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, false)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeStatsResponse{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	littlefuzz := make([]byte, len(dAtA))
+	copy(littlefuzz, dAtA)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+	if len(littlefuzz) > 0 {
+		fuzzamount := 100
+		for i := 0; i < fuzzamount; i++ {
+			littlefuzz[popr.Intn(len(littlefuzz))] = byte(popr.Intn(256))
+			littlefuzz = append(littlefuzz, byte(popr.Intn(256)))
+		}
+		// shouldn't panic
+		_ = github_com_gogo_protobuf_proto.Unmarshal(littlefuzz, msg)
+	}
+}
+
+func TestVolumeStatsResponseMarshalTo(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, false)
+	size := p.Size()
+	dAtA := make([]byte, size)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	_, err := p.MarshalTo(dAtA)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeStatsResponse{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func BenchmarkVolumeStatsResponseProtoMarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeStatsResponse, 10000)
+	for i := 0; i < 10000; i++ {
+		pops[i] = NewPopulatedVolumeStatsResponse(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(pops[i%10000])
+		if err != nil {
+			panic(err)
+		}
+		total += len(dAtA)
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func BenchmarkVolumeStatsResponseProtoUnmarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	datas := make([][]byte, 10000)
+	for i := 0; i < 10000; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(NewPopulatedVolumeStatsResponse(popr, false))
+		if err != nil {
+			panic(err)
+		}
+		datas[i] = dAtA
+	}
+	msg := &VolumeStatsResponse{}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += len(datas[i%10000])
+		if err := github_com_gogo_protobuf_proto.Unmarshal(datas[i%10000], msg); err != nil {
+			panic(err)
+		}
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeUsageProto(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, false)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeUsage{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	littlefuzz := make([]byte, len(dAtA))
+	copy(littlefuzz, dAtA)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+	if len(littlefuzz) > 0 {
+		fuzzamount := 100
+		for i := 0; i < fuzzamount; i++ {
+			littlefuzz[popr.Intn(len(littlefuzz))] = byte(popr.Intn(256))
+			littlefuzz = append(littlefuzz, byte(popr.Intn(256)))
+		}
+		// shouldn't panic
+		_ = github_com_gogo_protobuf_proto.Unmarshal(littlefuzz, msg)
+	}
+}
+
+func TestVolumeUsageMarshalTo(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, false)
+	size := p.Size()
+	dAtA := make([]byte, size)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	_, err := p.MarshalTo(dAtA)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeUsage{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func BenchmarkVolumeUsageProtoMarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeUsage, 10000)
+	for i := 0; i < 10000; i++ {
+		pops[i] = NewPopulatedVolumeUsage(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(pops[i%10000])
+		if err != nil {
+			panic(err)
+		}
+		total += len(dAtA)
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func BenchmarkVolumeUsageProtoUnmarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	datas := make([][]byte, 10000)
+	for i := 0; i < 10000; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(NewPopulatedVolumeUsage(popr, false))
+		if err != nil {
+			panic(err)
+		}
+		datas[i] = dAtA
+	}
+	msg := &VolumeUsage{}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += len(datas[i%10000])
+		if err := github_com_gogo_protobuf_proto.Unmarshal(datas[i%10000], msg); err != nil {
+			panic(err)
+		}
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeConditionProto(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, false)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeCondition{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	littlefuzz := make([]byte, len(dAtA))
+	copy(littlefuzz, dAtA)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+	if len(littlefuzz) > 0 {
+		fuzzamount := 100
+		for i := 0; i < fuzzamount; i++ {
+			littlefuzz[popr.Intn(len(littlefuzz))] = byte(popr.Intn(256))
+			littlefuzz = append(littlefuzz, byte(popr.Intn(256)))
+		}
+		// shouldn't panic
+		_ = github_com_gogo_protobuf_proto.Unmarshal(littlefuzz, msg)
+	}
+}
+
+func TestVolumeConditionMarshalTo(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, false)
+	size := p.Size()
+	dAtA := make([]byte, size)
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	_, err := p.MarshalTo(dAtA)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeCondition{}
+	if err := github_com_gogo_protobuf_proto.Unmarshal(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	for i := range dAtA {
+		dAtA[i] = byte(popr.Intn(256))
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func BenchmarkVolumeConditionProtoMarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeCondition, 10000)
+	for i := 0; i < 10000; i++ {
+		pops[i] = NewPopulatedVolumeCondition(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(pops[i%10000])
+		if err != nil {
+			panic(err)
+		}
+		total += len(dAtA)
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func BenchmarkVolumeConditionProtoUnmarshal(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	datas := make([][]byte, 10000)
+	for i := 0; i < 10000; i++ {
+		dAtA, err := github_com_gogo_protobuf_proto.Marshal(NewPopulatedVolumeCondition(popr, false))
+		if err != nil {
+			panic(err)
+		}
+		datas[i] = dAtA
+	}
+	msg := &VolumeCondition{}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += len(datas[i%10000])
+		if err := github_com_gogo_protobuf_proto.Unmarshal(datas[i%10000], msg); err != nil {
+			panic(err)
+		}
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeStatsResponseJSON(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, true)
+	marshaler := github_com_gogo_protobuf_jsonpb.Marshaler{}
+	jsondata, err := marshaler.MarshalToString(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeStatsResponse{}
+	err = github_com_gogo_protobuf_jsonpb.UnmarshalString(jsondata, msg)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Json Equal %#v", seed, msg, p)
+	}
+}
+func TestVolumeUsageJSON(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, true)
+	marshaler := github_com_gogo_protobuf_jsonpb.Marshaler{}
+	jsondata, err := marshaler.MarshalToString(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeUsage{}
+	err = github_com_gogo_protobuf_jsonpb.UnmarshalString(jsondata, msg)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Json Equal %#v", seed, msg, p)
+	}
+}
+func TestVolumeConditionJSON(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, true)
+	marshaler := github_com_gogo_protobuf_jsonpb.Marshaler{}
+	jsondata, err := marshaler.MarshalToString(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	msg := &VolumeCondition{}
+	err = github_com_gogo_protobuf_jsonpb.UnmarshalString(jsondata, msg)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Json Equal %#v", seed, msg, p)
+	}
+}
+func TestVolumeStatsResponseProtoText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.MarshalTextString(p)
+	msg := &VolumeStatsResponse{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeStatsResponseProtoCompactText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.CompactTextString(p)
+	msg := &VolumeStatsResponse{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeUsageProtoText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.MarshalTextString(p)
+	msg := &VolumeUsage{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeUsageProtoCompactText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.CompactTextString(p)
+	msg := &VolumeUsage{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeConditionProtoText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.MarshalTextString(p)
+	msg := &VolumeCondition{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeConditionProtoCompactText(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, true)
+	dAtA := github_com_gogo_protobuf_proto.CompactTextString(p)
+	msg := &VolumeCondition{}
+	if err := github_com_gogo_protobuf_proto.UnmarshalText(dAtA, msg); err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	if !p.Equal(msg) {
+		t.Fatalf("seed = %d, %#v !Proto %#v", seed, msg, p)
+	}
+}
+
+func TestVolumeStatsResponseSize(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeStatsResponse(popr, true)
+	size2 := github_com_gogo_protobuf_proto.Size(p)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	size := p.Size()
+	if len(dAtA) != size {
+		t.Errorf("seed = %d, size %v != marshalled size %v", seed, size, len(dAtA))
+	}
+	if size2 != size {
+		t.Errorf("seed = %d, size %v != before marshal proto.Size %v", seed, size, size2)
+	}
+	size3 := github_com_gogo_protobuf_proto.Size(p)
+	if size3 != size {
+		t.Errorf("seed = %d, size %v != after marshal proto.Size %v", seed, size, size3)
+	}
+}
+
+func BenchmarkVolumeStatsResponseSize(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeStatsResponse, 1000)
+	for i := 0; i < 1000; i++ {
+		pops[i] = NewPopulatedVolumeStatsResponse(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += pops[i%1000].Size()
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeUsageSize(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeUsage(popr, true)
+	size2 := github_com_gogo_protobuf_proto.Size(p)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	size := p.Size()
+	if len(dAtA) != size {
+		t.Errorf("seed = %d, size %v != marshalled size %v", seed, size, len(dAtA))
+	}
+	if size2 != size {
+		t.Errorf("seed = %d, size %v != before marshal proto.Size %v", seed, size, size2)
+	}
+	size3 := github_com_gogo_protobuf_proto.Size(p)
+	if size3 != size {
+		t.Errorf("seed = %d, size %v != after marshal proto.Size %v", seed, size, size3)
+	}
+}
+
+func BenchmarkVolumeUsageSize(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeUsage, 1000)
+	for i := 0; i < 1000; i++ {
+		pops[i] = NewPopulatedVolumeUsage(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += pops[i%1000].Size()
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeConditionSize(t *testing.T) {
+	seed := time.Now().UnixNano()
+	popr := math_rand.New(math_rand.NewSource(seed))
+	p := NewPopulatedVolumeCondition(popr, true)
+	size2 := github_com_gogo_protobuf_proto.Size(p)
+	dAtA, err := github_com_gogo_protobuf_proto.Marshal(p)
+	if err != nil {
+		t.Fatalf("seed = %d, err = %v", seed, err)
+	}
+	size := p.Size()
+	if len(dAtA) != size {
+		t.Errorf("seed = %d, size %v != marshalled size %v", seed, size, len(dAtA))
+	}
+	if size2 != size {
+		t.Errorf("seed = %d, size %v != before marshal proto.Size %v", seed, size, size2)
+	}
+	size3 := github_com_gogo_protobuf_proto.Size(p)
+	if size3 != size {
+		t.Errorf("seed = %d, size %v != after marshal proto.Size %v", seed, size, size3)
+	}
+}
+
+func BenchmarkVolumeConditionSize(b *testing.B) {
+	popr := math_rand.New(math_rand.NewSource(616))
+	total := 0
+	pops := make([]*VolumeCondition, 1000)
+	for i := 0; i < 1000; i++ {
+		pops[i] = NewPopulatedVolumeCondition(popr, false)
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		total += pops[i%1000].Size()
+	}
+	b.SetBytes(int64(total / b.N))
+}
+
+func TestVolumeStatsResponseStringer(t *testing.T) {
+	popr := math_rand.New(math_rand.NewSource(time.Now().UnixNano()))
+	p := NewPopulatedVolumeStatsResponse(popr, false)
+	s1 := p.String()
+	s2 := fmt.Sprintf("%v", p)
+	if s1 != s2 {
+		t.Fatalf("String want %v got %v", s1, s2)
+	}
+}
+func TestVolumeUsageStringer(t *testing.T) {
+	popr := math_rand.New(math_rand.NewSource(time.Now().UnixNano()))
+	p := NewPopulatedVolumeUsage(popr, false)
+	s1 := p.String()
+	s2 := fmt.Sprintf("%v", p)
+	if s1 != s2 {
+		t.Fatalf("String want %v got %v", s1, s2)
+	}
+}
+func TestVolumeConditionStringer(t *testing.T) {
+	popr := math_rand.New(math_rand.NewSource(time.Now().UnixNano()))
+	p := NewPopulatedVolumeCondition(popr, false)
+	s1 := p.String()
+	s2 := fmt.Sprintf("%v", p)
+	if s1 != s2 {
+		t.Fatalf("String want %v got %v", s1, s2)
+	}
+}
+
+//These tests are generated by github.com/gogo/protobuf/plugin/testgen