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/*
*
* Copyright 2020 gRPC 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 metadata
import (
"errors"
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"google.golang.org/grpc/attributes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/resolver"
)
func TestGet(t *testing.T) {
tests := []struct {
name string
addr resolver.Address
want metadata.MD
}{
{
name: "not set",
addr: resolver.Address{},
want: nil,
},
{
name: "not set",
addr: resolver.Address{
Attributes: attributes.New(mdKey, mdValue(metadata.Pairs("k", "v"))),
},
want: metadata.Pairs("k", "v"),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Get(tt.addr); !cmp.Equal(got, tt.want) {
t.Errorf("Get() = %v, want %v", got, tt.want)
}
})
}
}
func TestSet(t *testing.T) {
tests := []struct {
name string
addr resolver.Address
md metadata.MD
}{
{
name: "unset before",
addr: resolver.Address{},
md: metadata.Pairs("k", "v"),
},
{
name: "set before",
addr: resolver.Address{
Attributes: attributes.New(mdKey, mdValue(metadata.Pairs("bef", "ore"))),
},
md: metadata.Pairs("k", "v"),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
newAddr := Set(tt.addr, tt.md)
newMD := Get(newAddr)
if !cmp.Equal(newMD, tt.md) {
t.Errorf("md after Set() = %v, want %v", newMD, tt.md)
}
})
}
}
func TestValidate(t *testing.T) {
for _, test := range []struct {
md metadata.MD
want error
}{
{
md: map[string][]string{string(rune(0x19)): {"testVal"}},
want: errors.New("header key \"\\x19\" contains illegal characters not in [0-9a-z-_.]"),
},
{
md: map[string][]string{"test": {string(rune(0x19))}},
want: errors.New("header key \"test\" contains value with non-printable ASCII characters"),
},
{
md: map[string][]string{"": {"valid"}},
want: errors.New("there is an empty key in the header"),
},
{
md: map[string][]string{"test-bin": {string(rune(0x19))}},
want: nil,
},
} {
err := Validate(test.md)
if !reflect.DeepEqual(err, test.want) {
t.Errorf("validating metadata which is %v got err :%v, want err :%v", test.md, err, test.want)
}
}
}
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