blob: a5605e690b03e94d753d5d8f4fab78e32a58c055 [file] [log] [blame]
// Copyright 2017, OpenCensus 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 tag
import (
"context"
"reflect"
"sort"
"testing"
)
func TestEncodeDecode(t *testing.T) {
k1, _ := NewKey("k1")
k2, _ := NewKey("k2")
k3, _ := NewKey("k3 is very weird <>.,?/'\";:`~!@#$%^&*()_-+={[}]|\\")
k4, _ := NewKey("k4")
type keyValue struct {
k Key
v string
}
testCases := []struct {
label string
pairs []keyValue
}{
{
"0",
[]keyValue{},
},
{
"1",
[]keyValue{
{k1, "v1"},
},
},
{
"2",
[]keyValue{
{k1, "v1"},
{k2, "v2"},
},
},
{
"3",
[]keyValue{
{k1, "v1"},
{k2, "v2"},
{k3, "v3"},
},
},
{
"4",
[]keyValue{
{k1, "v1"},
{k2, "v2"},
{k3, "v3"},
{k4, "v4 is very weird <>.,?/'\";:`~!@#$%^&*()_-+={[}]|\\"},
},
},
}
for _, tc := range testCases {
mods := make([]Mutator, len(tc.pairs))
for i, pair := range tc.pairs {
mods[i] = Upsert(pair.k, pair.v)
}
ctx, err := New(context.Background(), mods...)
if err != nil {
t.Errorf("%v: New = %v", tc.label, err)
}
encoded := Encode(FromContext(ctx))
decoded, err := Decode(encoded)
if err != nil {
t.Errorf("%v: decoding encoded tag map failed: %v", tc.label, err)
}
got := make([]keyValue, 0)
for k, v := range decoded.m {
got = append(got, keyValue{k, string(v)})
}
want := tc.pairs
sort.Slice(got, func(i, j int) bool { return got[i].k.name < got[j].k.name })
sort.Slice(want, func(i, j int) bool { return got[i].k.name < got[j].k.name })
if !reflect.DeepEqual(got, tc.pairs) {
t.Errorf("%v: decoded tag map = %#v; want %#v", tc.label, got, want)
}
}
}
func TestDecode(t *testing.T) {
k1, _ := NewKey("k1")
ctx, _ := New(context.Background(), Insert(k1, "v1"))
tests := []struct {
name string
bytes []byte
want *Map
wantErr bool
}{
{
name: "valid",
bytes: []byte{0, 0, 2, 107, 49, 2, 118, 49},
want: FromContext(ctx),
wantErr: false,
},
{
name: "non-ascii key",
bytes: []byte{0, 0, 2, 107, 49, 2, 118, 49, 0, 2, 107, 25, 2, 118, 49},
want: nil,
wantErr: true,
},
{
name: "non-ascii value",
bytes: []byte{0, 0, 2, 107, 49, 2, 118, 49, 0, 2, 107, 50, 2, 118, 25},
want: nil,
wantErr: true,
},
{
name: "long value",
bytes: []byte{0, 0, 2, 107, 49, 2, 118, 49, 0, 2, 107, 50, 172, 2, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97, 97},
want: nil,
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := Decode(tt.bytes)
if (err != nil) != tt.wantErr {
t.Errorf("Decode() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("Decode() = %v, want %v", got, tt.want)
}
})
}
}