func TestMerger(t *testing.T) {
// Use 3 reports to check the pair-wise merging in SmartMerger
report1 := report.MakeReport()
report1.Endpoint.AddNode(report.MakeNode("foo"))
report2 := report.MakeReport()
report2.Endpoint.AddNode(report.MakeNode("bar"))
report3 := report.MakeReport()
report3.Endpoint.AddNode(report.MakeNode("baz"))
reports := []report.Report{
report1, report2, report3,
}
want := report.MakeReport()
want.Endpoint.
AddNode(report.MakeNode("foo")).
AddNode(report.MakeNode("bar")).
AddNode(report.MakeNode("baz"))
for _, merger := range []app.Merger{app.MakeDumbMerger(), app.NewSmartMerger()} {
// Test the empty list case
if have := merger.Merge([]report.Report{}); !reflect.DeepEqual(have, report.MakeReport()) {
t.Errorf("Bad merge: %s", test.Diff(have, want))
}
if have := merger.Merge(reports); !reflect.DeepEqual(have, want) {
t.Errorf("Bad merge: %s", test.Diff(have, want))
}
// Repeat the above test to ensure caching works
if have := merger.Merge(reports); !reflect.DeepEqual(have, want) {
t.Errorf("Bad merge: %s", test.Diff(have, want))
}
}
}
func TestSets(t *testing.T) {
sets := EmptySets.Add("foo", MakeStringSet("bar"))
if v, _ := sets.Lookup("foo"); !reflect.DeepEqual(v, MakeStringSet("bar")) {
t.Fatal(v)
}
sets = sets.Merge(EmptySets.Add("foo", MakeStringSet("baz")))
if v, _ := sets.Lookup("foo"); !reflect.DeepEqual(v, MakeStringSet("bar", "baz")) {
t.Fatal(v)
}
}
func TestMetricCopy(t *testing.T) {
want := report.MakeMetric()
have := want.Copy()
if !reflect.DeepEqual(want, have) {
t.Errorf("diff: %s", test.Diff(want, have))
}
want = report.MakeMetric().Add(time.Now(), 1)
have = want.Copy()
if !reflect.DeepEqual(want, have) {
t.Errorf("diff: %s", test.Diff(want, have))
}
}
func TestCountersDeepEquals(t *testing.T) {
want := EmptyCounters.
Add("foo", 3)
have := EmptyCounters.
Add("foo", 3)
if !reflect.DeepEqual(want, have) {
t.Errorf(test.Diff(want, have))
}
notequal := EmptyCounters.
Add("foo", 4)
if reflect.DeepEqual(want, notequal) {
t.Errorf(test.Diff(want, have))
}
}
func TestLatestMapDeepEquals(t *testing.T) {
now := time.Now()
want := EmptyLatestMap.
Set("foo", now, "Bar")
have := EmptyLatestMap.
Set("foo", now, "Bar")
if !reflect.DeepEqual(want, have) {
t.Errorf(test.Diff(want, have))
}
notequal := EmptyLatestMap.
Set("foo", now, "Baz")
if reflect.DeepEqual(want, notequal) {
t.Errorf(test.Diff(want, have))
}
}
func TestLatestMapDeleteNil(t *testing.T) {
want := LatestMap{}
have := LatestMap{}.Delete("foo")
if !reflect.DeepEqual(want, have) {
t.Errorf(test.Diff(want, have))
}
}
func TestLatestMapEncodingNil(t *testing.T) {
want := LatestMap{}
{
gobs, err := want.GobEncode()
if err != nil {
t.Fatal(err)
}
have := EmptyLatestMap
have.GobDecode(gobs)
if have.Map == nil {
t.Error("Decoded LatestMap.psMap should not be nil")
}
}
{
for _, h := range []codec.Handle{
codec.Handle(&codec.MsgpackHandle{}),
codec.Handle(&codec.JsonHandle{}),
} {
buf := &bytes.Buffer{}
encoder := codec.NewEncoder(buf, h)
want.CodecEncodeSelf(encoder)
decoder := codec.NewDecoder(buf, h)
have := EmptyLatestMap
have.CodecDecodeSelf(decoder)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
}
}
func TestMakePluginSpecs(t *testing.T) {
for _, testcase := range []struct {
inputs []string
wants []string
}{
{inputs: nil, wants: nil},
{
inputs: []string{"a"},
wants: []string{"a"},
},
{
inputs: []string{"a", "a"},
wants: []string{"a"},
},
{
inputs: []string{"b", "c", "a"},
wants: []string{"a", "b", "c"},
},
} {
var inputs []PluginSpec
for _, id := range testcase.inputs {
inputs = append(inputs, PluginSpec{ID: id})
}
have := MakePluginSpecs(inputs...)
var haveIDs []string
have.ForEach(func(p PluginSpec) {
haveIDs = append(haveIDs, p.ID)
})
if !reflect.DeepEqual(testcase.wants, haveIDs) {
t.Errorf("%#v: want %#v, have %#v", inputs, testcase.wants, haveIDs)
}
}
}
func TestSetsMerge(t *testing.T) {
for _, testcase := range []struct {
a, b report.Sets
want map[string][]string
}{
{report.EmptySets, report.EmptySets, map[string][]string{}},
{
report.EmptySets,
report.EmptySets.Add("a", report.MakeStringSet("b")),
map[string][]string{"a": {"b"}},
},
{
report.EmptySets,
report.EmptySets.Add("a", report.MakeStringSet("b", "c")),
map[string][]string{"a": {"b", "c"}},
},
{
report.EmptySets.Add("a", report.MakeStringSet("1")).Add("b", report.MakeStringSet("2")),
report.EmptySets.Add("c", report.MakeStringSet("3")).Add("b", report.MakeStringSet("3")),
map[string][]string{"a": {"1"}, "b": {"2", "3"}, "c": {"3"}},
},
} {
haveSets := testcase.a.Merge(testcase.b)
have := map[string][]string{}
keys := haveSets.Keys()
for _, k := range keys {
have[k], _ = haveSets.Lookup(k)
}
if !reflect.DeepEqual(testcase.want, have) {
t.Errorf("%+v.Merge(%+v): want %+v, have %+v", testcase.a, testcase.b, testcase.want, have)
}
}
}
func TestApply(t *testing.T) {
var (
endpointNodeID = "c"
endpointNode = report.MakeNodeWith(endpointNodeID, map[string]string{"5": "6"})
)
p := New(0, 0, nil)
p.AddTagger(NewTopologyTagger())
r := report.MakeReport()
r.Endpoint.AddNode(endpointNode)
r = p.tag(r)
for _, tuple := range []struct {
want report.Node
from report.Topology
via string
}{
{endpointNode.Merge(report.MakeNode("c").WithTopology(report.Endpoint)), r.Endpoint, endpointNodeID},
} {
if want, have := tuple.want, tuple.from.Nodes[tuple.via]; !reflect.DeepEqual(want, have) {
t.Errorf("want %+v, have %+v", want, have)
}
}
}
func TestEdgeMetadataDeepEquals(t *testing.T) {
for _, c := range []struct {
name string
a, b interface{}
want bool
}{
{
name: "zero values",
a: EdgeMetadata{},
b: EdgeMetadata{},
want: true,
},
{
name: "matching, but different pointers",
a: EdgeMetadata{EgressPacketCount: newu64(3)},
b: EdgeMetadata{EgressPacketCount: newu64(3)},
want: true,
},
{
name: "mismatching",
a: EdgeMetadata{EgressPacketCount: newu64(3)},
b: EdgeMetadata{EgressPacketCount: newu64(4)},
want: false,
},
} {
if have := reflect.DeepEqual(c.a, c.b); have != c.want {
t.Errorf("reflect.DeepEqual(%v, %v) != %v", c.a, c.b, c.want)
}
}
}
func TestHostRenderer(t *testing.T) {
have := Prune(render.HostRenderer.Render(fixture.Report, render.FilterNoop))
want := Prune(expected.RenderedHosts)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestEdgeMetadatasEncodingNil(t *testing.T) {
want := EdgeMetadatas{}
{
gobs, err := want.GobEncode()
if err != nil {
t.Fatal(err)
}
have := EmptyEdgeMetadatas
have.GobDecode(gobs)
if have.psMap == nil {
t.Error("needed to get back a non-nil psMap for EdgeMetadata")
}
}
{
for _, h := range []codec.Handle{
codec.Handle(&codec.MsgpackHandle{}),
codec.Handle(&codec.JsonHandle{}),
} {
buf := &bytes.Buffer{}
encoder := codec.NewEncoder(buf, h)
want.CodecEncodeSelf(encoder)
decoder := codec.NewDecoder(buf, h)
have := EmptyEdgeMetadatas
have.CodecDecodeSelf(decoder)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
}
}
func TestContainerHostnameFilterRenderer(t *testing.T) {
// add a system container into the topology and ensure
// it is filtered out correctly.
input := fixture.Report.Copy()
clientContainer2ID := "f6g7h8i9j1"
clientContainer2NodeID := report.MakeContainerNodeID(clientContainer2ID)
input.Container.AddNode(report.MakeNodeWith(clientContainer2NodeID, map[string]string{
docker.LabelPrefix + "works.weave.role": "system",
docker.ContainerHostname: fixture.ClientContainerHostname,
report.HostNodeID: fixture.ClientHostNodeID,
}).
WithParents(report.EmptySets.
Add("host", report.MakeStringSet(fixture.ClientHostNodeID)),
).WithTopology(report.Container))
have := Prune(render.ContainerHostnameRenderer.Render(input, render.FilterApplication))
want := Prune(expected.RenderedContainerHostnames)
// Test works by virtue of the RenderedContainerHostname only having a container
// counter == 1
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestContainerRenderer(t *testing.T) {
have := Prune(render.ContainerWithImageNameRenderer.Render(fixture.Report, render.FilterNoop))
want := Prune(expected.RenderedContainers)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestPodServiceRenderer(t *testing.T) {
have := Prune(render.PodServiceRenderer.Render(fixture.Report, nil))
want := Prune(expected.RenderedPodServices)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestMakeNodeSet(t *testing.T) {
for _, testcase := range []struct {
inputs []string
wants []string
}{
{inputs: nil, wants: nil},
{
inputs: []string{"a"},
wants: []string{"a"},
},
{
inputs: []string{"b", "c", "a"},
wants: []string{"a", "b", "c"},
},
{
inputs: []string{"a", "a", "a"},
wants: []string{"a"},
},
} {
var inputs []report.Node
for _, id := range testcase.inputs {
inputs = append(inputs, report.MakeNode(id))
}
set := report.MakeNodeSet(inputs...)
var have []string
set.ForEach(func(node report.Node) { have = append(have, node.ID) })
if !reflect.DeepEqual(testcase.wants, have) {
t.Errorf("%#v: want %#v, have %#v", testcase.inputs, testcase.wants, have)
}
}
}
// Poll repeatedly evaluates condition until we either timeout, or it succeeds.
func Poll(t *testing.T, d time.Duration, want interface{}, have func() interface{}) {
deadline := time.Now().Add(d)
for {
if time.Now().After(deadline) {
break
}
if reflect.DeepEqual(want, have()) {
return
}
time.Sleep(d / 10)
}
h := have()
if !reflect.DeepEqual(want, h) {
_, file, line, _ := runtime.Caller(1)
t.Fatalf("%s:%d: %s", file, line, Diff(want, h))
}
}
func TestEdgeMetadataFlatten(t *testing.T) {
// Test two EdgeMetadatas flatten to the correct values
{
have := (EdgeMetadata{
EgressPacketCount: newu64(1),
}).Flatten(EdgeMetadata{
EgressPacketCount: newu64(4),
EgressByteCount: newu64(8),
})
want := EdgeMetadata{
EgressPacketCount: newu64(1 + 4),
EgressByteCount: newu64(8),
}
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
// Test an EdgeMetadatas flatten to the correct value (should
// just sum)
{
have := EmptyEdgeMetadatas.
Add("foo", EdgeMetadata{
EgressPacketCount: newu64(1),
}).
Add("bar", EdgeMetadata{
EgressPacketCount: newu64(3),
}).Flatten()
want := EdgeMetadata{
EgressPacketCount: newu64(1 + 3),
}
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
{
// Should not panic on nil
have := EdgeMetadatas{}.Flatten()
want := EdgeMetadata{}
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
}
func TestMemoise(t *testing.T) {
calls := 0
r := renderFunc(func(rpt report.Report) report.Nodes {
calls++
return report.Nodes{rpt.ID: report.MakeNode(rpt.ID)}
})
m := render.Memoise(r)
rpt1 := report.MakeReport()
result1 := m.Render(rpt1, nil)
// it should have rendered it.
if _, ok := result1[rpt1.ID]; !ok {
t.Errorf("Expected rendered report to contain a node, but got: %v", result1)
}
if calls != 1 {
t.Errorf("Expected renderer to have been called the first time")
}
result2 := m.Render(rpt1, nil)
if !reflect.DeepEqual(result1, result2) {
t.Errorf("Expected memoised result to be returned: %s", test.Diff(result1, result2))
}
if calls != 1 {
t.Errorf("Expected renderer to not have been called the second time")
}
rpt2 := report.MakeReport()
result3 := m.Render(rpt2, nil)
if reflect.DeepEqual(result1, result3) {
t.Errorf("Expected different result for different report, but were the same")
}
if calls != 2 {
t.Errorf("Expected renderer to have been called again for a different report")
}
render.ResetCache()
result4 := m.Render(rpt1, nil)
if !reflect.DeepEqual(result1, result4) {
t.Errorf("Expected original result to be returned: %s", test.Diff(result1, result4))
}
if calls != 3 {
t.Errorf("Expected renderer to have been called again after cache reset")
}
}
func TestNodeSetDelete(t *testing.T) {
for _, testcase := range []struct {
input report.NodeSet
nodes []string
want report.NodeSet
}{
{
input: report.NodeSet{},
nodes: []string{},
want: report.NodeSet{},
},
{
input: report.EmptyNodeSet,
nodes: []string{},
want: report.EmptyNodeSet,
},
{
input: report.MakeNodeSet(report.MakeNode("a")),
nodes: []string{},
want: report.MakeNodeSet(report.MakeNode("a")),
},
{
input: report.EmptyNodeSet,
nodes: []string{"a"},
want: report.EmptyNodeSet,
},
{
input: report.MakeNodeSet(report.MakeNode("a")),
nodes: []string{"a"},
want: report.EmptyNodeSet,
},
{
input: report.MakeNodeSet(report.MakeNode("b")),
nodes: []string{"a", "b"},
want: report.EmptyNodeSet,
},
{
input: report.MakeNodeSet(report.MakeNode("a")),
nodes: []string{"c", "b"},
want: report.MakeNodeSet(report.MakeNode("a")),
},
{
input: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("c")),
nodes: []string{"a", "a", "a"},
want: report.MakeNodeSet(report.MakeNode("c")),
},
} {
originalLen := testcase.input.Size()
if want, have := testcase.want, testcase.input.Delete(testcase.nodes...); !reflect.DeepEqual(want, have) {
t.Errorf("%v + %v: want %v, have %v", testcase.input, testcase.nodes, want, have)
}
if testcase.input.Size() != originalLen {
t.Errorf("%v + %v: modified the original input!", testcase.input, testcase.nodes)
}
}
}
func TestLatestMapDelete(t *testing.T) {
now := time.Now()
want := EmptyLatestMap
have := EmptyLatestMap.
Set("foo", now, "Baz").
Delete("foo")
if !reflect.DeepEqual(want, have) {
t.Errorf(test.Diff(want, have))
}
}
func checkLoadedPlugins(t *testing.T, forEach iterator, expected []xfer.PluginSpec) {
var plugins []xfer.PluginSpec
forEach(func(p *Plugin) {
plugins = append(plugins, p.PluginSpec)
})
sort.Sort(xfer.PluginSpecsByID(plugins))
if !reflect.DeepEqual(plugins, expected) {
t.Fatalf(test.Diff(expected, plugins))
}
}
func TestMetricsCopy(t *testing.T) {
t1 := time.Now()
want := report.Metrics{
"metric1": report.MakeMetric().Add(t1, 0.1),
}
delete(want.Copy(), "metric1") // Modify a copy
have := want.Copy() // Check the original wasn't affected
if !reflect.DeepEqual(want, have) {
t.Errorf("diff: %s", test.Diff(want, have))
}
}
func TestEdgeMetadataReversed(t *testing.T) {
have := EdgeMetadata{
EgressPacketCount: newu64(1),
}.Reversed()
want := EdgeMetadata{
IngressPacketCount: newu64(1),
}
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestPluginSpecsMerge(t *testing.T) {
for _, testcase := range []struct {
input PluginSpecs
other PluginSpecs
want PluginSpecs
}{
{input: PluginSpecs{}, other: PluginSpecs{}, want: PluginSpecs{}},
{input: EmptyPluginSpecs, other: EmptyPluginSpecs, want: EmptyPluginSpecs},
{
input: MakePluginSpecs(PluginSpec{ID: "a"}),
other: EmptyPluginSpecs,
want: MakePluginSpecs(PluginSpec{ID: "a"}),
},
{
input: EmptyPluginSpecs,
other: MakePluginSpecs(PluginSpec{ID: "a"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}),
},
{
input: MakePluginSpecs(PluginSpec{ID: "a"}),
other: MakePluginSpecs(PluginSpec{ID: "b"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "b"}),
},
{
input: MakePluginSpecs(PluginSpec{ID: "b"}),
other: MakePluginSpecs(PluginSpec{ID: "a"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "b"}),
},
{
input: MakePluginSpecs(PluginSpec{ID: "a"}),
other: MakePluginSpecs(PluginSpec{ID: "a"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}),
},
{
input: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "c"}),
other: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "b"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "b"}, PluginSpec{ID: "c"}),
},
{
input: MakePluginSpecs(PluginSpec{ID: "b"}),
other: MakePluginSpecs(PluginSpec{ID: "a"}),
want: MakePluginSpecs(PluginSpec{ID: "a"}, PluginSpec{ID: "b"}),
},
} {
originalLen := testcase.input.Size()
if want, have := testcase.want, testcase.input.Merge(testcase.other); !reflect.DeepEqual(want, have) {
t.Errorf("%v + %v: want %v, have %v", testcase.input, testcase.other, want, have)
}
if testcase.input.Size() != originalLen {
t.Errorf("%v + %v: modified the original input!", testcase.input, testcase.other)
}
}
}
func TestNodeSetMerge(t *testing.T) {
for _, testcase := range []struct {
input report.NodeSet
other report.NodeSet
want report.NodeSet
}{
{input: report.NodeSet{}, other: report.NodeSet{}, want: report.NodeSet{}},
{input: report.EmptyNodeSet, other: report.EmptyNodeSet, want: report.EmptyNodeSet},
{
input: report.MakeNodeSet(report.MakeNode("a")),
other: report.EmptyNodeSet,
want: report.MakeNodeSet(report.MakeNode("a")),
},
{
input: report.EmptyNodeSet,
other: report.MakeNodeSet(report.MakeNode("a")),
want: report.MakeNodeSet(report.MakeNode("a")),
},
{
input: report.MakeNodeSet(report.MakeNode("a")),
other: report.MakeNodeSet(report.MakeNode("b")),
want: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("b")),
},
{
input: report.MakeNodeSet(report.MakeNode("b")),
other: report.MakeNodeSet(report.MakeNode("a")),
want: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("b")),
},
{
input: report.MakeNodeSet(report.MakeNode("a")),
other: report.MakeNodeSet(report.MakeNode("a")),
want: report.MakeNodeSet(report.MakeNode("a")),
},
{
input: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("c")),
other: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("b")),
want: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("b"), report.MakeNode("c")),
},
{
input: report.MakeNodeSet(report.MakeNode("b")),
other: report.MakeNodeSet(report.MakeNode("a")),
want: report.MakeNodeSet(report.MakeNode("a"), report.MakeNode("b")),
},
} {
originalLen := testcase.input.Size()
if want, have := testcase.want, testcase.input.Merge(testcase.other); !reflect.DeepEqual(want, have) {
t.Errorf("%v + %v: want %v, have %v", testcase.input, testcase.other, want, have)
}
if testcase.input.Size() != originalLen {
t.Errorf("%v + %v: modified the original input!", testcase.input, testcase.other)
}
}
}
func TestCollectorExpire(t *testing.T) {
now := time.Now()
mtime.NowForce(now)
defer mtime.NowReset()
ctx := context.Background()
window := 10 * time.Second
c := app.NewCollector(window)
// 1st check the collector is empty
have, err := c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
// Now check an added report is returned
r1 := report.MakeReport()
r1.Endpoint.AddNode(report.MakeNode("foo"))
c.Add(ctx, r1)
have, err = c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := r1; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
// Finally move time forward to expire the report
mtime.NowForce(now.Add(window))
have, err = c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestCollector(t *testing.T) {
ctx := context.Background()
window := 10 * time.Second
c := app.NewCollector(window)
r1 := report.MakeReport()
r1.Endpoint.AddNode(report.MakeNode("foo"))
r2 := report.MakeReport()
r2.Endpoint.AddNode(report.MakeNode("foo"))
have, err := c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := report.MakeReport(); !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
c.Add(ctx, r1)
have, err = c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := r1; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
c.Add(ctx, r2)
merged := report.MakeReport()
merged = merged.Merge(r1)
merged = merged.Merge(r2)
have, err = c.Report(ctx)
if err != nil {
t.Error(err)
}
if want := merged; !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
func TestEdgeMetadatasEncoding(t *testing.T) {
want := EmptyEdgeMetadatas.
Add("foo", EdgeMetadata{
EgressPacketCount: newu64(1),
}).
Add("bar", EdgeMetadata{
EgressPacketCount: newu64(3),
})
{
gobs, err := want.GobEncode()
if err != nil {
t.Fatal(err)
}
have := EmptyEdgeMetadatas
have.GobDecode(gobs)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
{
for _, h := range []codec.Handle{
codec.Handle(&codec.MsgpackHandle{}),
codec.Handle(&codec.JsonHandle{}),
} {
buf := &bytes.Buffer{}
encoder := codec.NewEncoder(buf, h)
want.CodecEncodeSelf(encoder)
decoder := codec.NewDecoder(buf, h)
have := EmptyEdgeMetadatas
have.CodecDecodeSelf(decoder)
if !reflect.DeepEqual(want, have) {
t.Error(test.Diff(want, have))
}
}
}
}