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metadata_test.go
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metadata_test.go
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package metadata
import (
"context"
"reflect"
"testing"
)
func TestMetadataSet(t *testing.T) {
ctx := Set(context.TODO(), "Key", "val")
val, ok := Get(ctx, "Key")
if !ok {
t.Fatal("key Key not found")
}
if val != "val" {
t.Errorf("key Key with value val != %v", val)
}
}
func TestMetadataDelete(t *testing.T) {
md := Metadata{
"Foo": "bar",
"Baz": "empty",
}
ctx := NewContext(context.TODO(), md)
ctx = Delete(ctx, "Baz")
emd, ok := FromContext(ctx)
if !ok {
t.Fatal("key Key not found")
}
_, ok = emd["Baz"]
if ok {
t.Fatal("key Baz not deleted")
}
}
func TestMetadataCopy(t *testing.T) {
md := Metadata{
"Foo": "bar",
"bar": "baz",
}
cp := Copy(md)
for k, v := range md {
if cv := cp[k]; cv != v {
t.Fatalf("Got %s:%s for %s:%s", k, cv, k, v)
}
}
}
func TestMetadataContext(t *testing.T) {
md := Metadata{
"Foo": "bar",
}
ctx := NewContext(context.TODO(), md)
emd, ok := FromContext(ctx)
if !ok {
t.Errorf("Unexpected error retrieving metadata, got %t", ok)
}
if emd["Foo"] != md["Foo"] {
t.Errorf("Expected key: %s val: %s, got key: %s val: %s", "Foo", md["Foo"], "Foo", emd["Foo"])
}
if i := len(emd); i != 1 {
t.Errorf("Expected metadata length 1 got %d", i)
}
}
func TestMergeContext(t *testing.T) {
type args struct {
existing Metadata
append Metadata
overwrite bool
}
tests := []struct {
name string
args args
want Metadata
}{
{
name: "matching key, overwrite false",
args: args{
existing: Metadata{"Foo": "bar", "Sumo": "demo"},
append: Metadata{"Sumo": "demo2"},
overwrite: false,
},
want: Metadata{"Foo": "bar", "Sumo": "demo"},
},
{
name: "matching key, overwrite true",
args: args{
existing: Metadata{"Foo": "bar", "Sumo": "demo"},
append: Metadata{"Sumo": "demo2"},
overwrite: true,
},
want: Metadata{"Foo": "bar", "Sumo": "demo2"},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got, _ := FromContext(MergeContext(NewContext(context.TODO(), tt.args.existing), tt.args.append, tt.args.overwrite)); !reflect.DeepEqual(got, tt.want) {
t.Errorf("MergeContext() = %v, want %v", got, tt.want)
}
})
}
}