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// Copyright 2020 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package clientv3
import (
"context"
"reflect"
"testing"
"go.etcd.io/etcd/api/v3/v3rpc/rpctypes"
"go.etcd.io/etcd/api/v3/version"
"google.golang.org/grpc/metadata"
)
func TestMetadataWithRequireLeader(t *testing.T) {
ctx := context.TODO()
_, ok := metadata.FromOutgoingContext(ctx)
if ok {
t.Fatal("expected no outgoing metadata ctx key")
}
// add a conflicting key with some other value
md := metadata.Pairs(rpctypes.MetadataRequireLeaderKey, "invalid")
// add a key, and expect not be overwritten
md.Set("hello", "1", "2")
ctx = metadata.NewOutgoingContext(ctx, md)
// expect overwrites but still keep other keys
ctx = WithRequireLeader(ctx)
md, ok = metadata.FromOutgoingContext(ctx)
if !ok {
t.Fatal("expected outgoing metadata ctx key")
}
if ss := md.Get(rpctypes.MetadataRequireLeaderKey); !reflect.DeepEqual(ss, []string{rpctypes.MetadataHasLeader}) {
t.Fatalf("unexpected metadata for %q %v", rpctypes.MetadataRequireLeaderKey, ss)
}
if ss := md.Get("hello"); !reflect.DeepEqual(ss, []string{"1", "2"}) {
t.Fatalf("unexpected metadata for 'hello' %v", ss)
}
}
func TestMetadataWithClientAPIVersion(t *testing.T) {
ctx := withVersion(WithRequireLeader(context.TODO()))
md, ok := metadata.FromOutgoingContext(ctx)
if !ok {
t.Fatal("expected outgoing metadata ctx key")
}
if ss := md.Get(rpctypes.MetadataRequireLeaderKey); !reflect.DeepEqual(ss, []string{rpctypes.MetadataHasLeader}) {
t.Fatalf("unexpected metadata for %q %v", rpctypes.MetadataRequireLeaderKey, ss)
}
if ss := md.Get(rpctypes.MetadataClientAPIVersionKey); !reflect.DeepEqual(ss, []string{version.APIVersion}) {
t.Fatalf("unexpected metadata for %q %v", rpctypes.MetadataClientAPIVersionKey, ss)
}
}
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