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kratos/middleware/metadata/metadata_test.go

127 lines
3.4 KiB

package metadata
import (
"context"
"errors"
"net/http"
"testing"
"github.com/go-kratos/kratos/v2/metadata"
"github.com/go-kratos/kratos/v2/transport"
)
type headerCarrier http.Header
func (hc headerCarrier) Get(key string) string { return http.Header(hc).Get(key) }
func (hc headerCarrier) Set(key string, value string) { http.Header(hc).Set(key, value) }
// Keys lists the keys stored in this carrier.
func (hc headerCarrier) Keys() []string {
keys := make([]string, 0, len(hc))
for k := range http.Header(hc) {
keys = append(keys, k)
}
return keys
}
type testTransport struct{ header headerCarrier }
func (tr *testTransport) Kind() transport.Kind { return transport.KindHTTP }
func (tr *testTransport) Endpoint() string { return "" }
func (tr *testTransport) Operation() string { return "" }
func (tr *testTransport) Header() transport.Header { return tr.header }
func TestSever(t *testing.T) {
var (
globalKey = "x-md-global-key"
globalValue = "global-value"
localKey = "x-md-local-key"
localValue = "local-value"
constKey = "x-md-local-const"
constValue = "x-md-local-const"
)
hs := func(ctx context.Context, in interface{}) (interface{}, error) {
md, ok := metadata.FromServerContext(ctx)
if !ok {
return nil, errors.New("no md")
}
if md.Get(constKey) != constValue {
return nil, errors.New("const not equal")
}
if md.Get(globalKey) != globalValue {
return nil, errors.New("global not equal")
}
if md.Get(localKey) != localValue {
return nil, errors.New("local not equal")
}
return in, nil
}
hc := headerCarrier{}
hc.Set(globalKey, globalValue)
hc.Set(localKey, localValue)
ctx := transport.NewServerContext(context.Background(), &testTransport{hc})
// const md
constMD := metadata.New()
constMD.Set(constKey, constValue)
reply, err := Server(WithConstants(constMD))(hs)(ctx, "foo")
if err != nil {
t.Fatal(err)
}
if reply.(string) != "foo" {
t.Fatalf("want foo got %v", reply)
}
}
func TestClient(t *testing.T) {
var (
globalKey = "x-md-global-key"
globalValue = "global-value"
localKey = "x-md-local-key"
localValue = "local-value"
customKey = "x-md-local-custom"
customValue = "custom-value"
constKey = "x-md-local-const"
constValue = "x-md-local-const"
)
hs := func(ctx context.Context, in interface{}) (interface{}, error) {
tr, ok := transport.FromClientContext(ctx)
if !ok {
return nil, errors.New("no md")
}
if tr.Header().Get(constKey) != constValue {
return nil, errors.New("const not equal")
}
if tr.Header().Get(customKey) != customValue {
return nil, errors.New("custom not equal")
}
if tr.Header().Get(globalKey) != globalValue {
return nil, errors.New("global not equal")
}
if tr.Header().Get(localKey) != "" {
return nil, errors.New("local must empty")
}
return in, nil
}
// server md
serverMD := metadata.New()
serverMD.Set(globalKey, globalValue)
serverMD.Set(localKey, localValue)
ctx := metadata.NewServerContext(context.Background(), serverMD)
// client md
clientMD := metadata.New()
clientMD.Set(customKey, customValue)
ctx = metadata.NewClientContext(ctx, clientMD)
// transport carrier
ctx = transport.NewClientContext(ctx, &testTransport{headerCarrier{}})
// const md
constMD := metadata.New()
constMD.Set(constKey, constValue)
reply, err := Client(WithConstants(constMD))(hs)(ctx, "bar")
if err != nil {
t.Fatal(err)
}
if reply.(string) != "bar" {
t.Fatalf("want foo got %v", reply)
}
}