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- // 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)
- }
- })
- }
- }
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