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go-micro/metadata/metadata_test.go

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package metadata
import (
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"context"
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"reflect"
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"testing"
)
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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)
}
}
}
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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)
}
}
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func TestAppendContext(t *testing.T) {
type args struct {
existing Metadata
append Metadata
overwrite bool
}
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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"},
},
}
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for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got, _ := FromContext(AppendContext(NewContext(context.TODO(), tt.args.existing), tt.args.append, tt.args.overwrite)); !reflect.DeepEqual(got, tt.want) {
t.Errorf("AppendContext() = %v, want %v", got, tt.want)
}
})
}
}