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opentelemetry-go/label/key_test.go
Tyler Yahn f995380e58
Unify api/label and api/kv in new label package (#1060)
* Move `api/label` to `label`

* Move `api/kv` package contents into `label` package

* Unify label package name

* Move `api/internal/rawhelpers.go` to `internal`

* Propagate replacing `api/kv` with `label` pkg

* golint

* Fix over-aggressive change

* Update Changelog
2020-08-17 20:25:03 -07:00

122 lines
2.9 KiB
Go

// Copyright The OpenTelemetry 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 label_test
import (
"encoding/json"
"testing"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/label"
)
func TestDefined(t *testing.T) {
for _, testcase := range []struct {
name string
k label.Key
want bool
}{
{
name: "Key.Defined() returns true when len(v.Name) != 0",
k: label.Key("foo"),
want: true,
},
{
name: "Key.Defined() returns false when len(v.Name) == 0",
k: label.Key(""),
want: false,
},
} {
t.Run(testcase.name, func(t *testing.T) {
//func (k label.Key) Defined() bool {
have := testcase.k.Defined()
if have != testcase.want {
t.Errorf("Want: %v, but have: %v", testcase.want, have)
}
})
}
}
func TestJSONValue(t *testing.T) {
var kvs interface{} = [2]label.KeyValue{
label.String("A", "B"),
label.Int64("C", 1),
}
data, err := json.Marshal(kvs)
require.NoError(t, err)
require.Equal(t,
`[{"Key":"A","Value":{"Type":"STRING","Value":"B"}},{"Key":"C","Value":{"Type":"INT64","Value":1}}]`,
string(data))
}
func TestEmit(t *testing.T) {
for _, testcase := range []struct {
name string
v label.Value
want string
}{
{
name: `test Key.Emit() can emit a string representing self.BOOL`,
v: label.BoolValue(true),
want: "true",
},
{
name: `test Key.Emit() can emit a string representing self.INT32`,
v: label.Int32Value(42),
want: "42",
},
{
name: `test Key.Emit() can emit a string representing self.INT64`,
v: label.Int64Value(42),
want: "42",
},
{
name: `test Key.Emit() can emit a string representing self.UINT32`,
v: label.Uint32Value(42),
want: "42",
},
{
name: `test Key.Emit() can emit a string representing self.UINT64`,
v: label.Uint64Value(42),
want: "42",
},
{
name: `test Key.Emit() can emit a string representing self.FLOAT32`,
v: label.Float32Value(42.1),
want: "42.1",
},
{
name: `test Key.Emit() can emit a string representing self.FLOAT64`,
v: label.Float64Value(42.1),
want: "42.1",
},
{
name: `test Key.Emit() can emit a string representing self.STRING`,
v: label.StringValue("foo"),
want: "foo",
},
} {
t.Run(testcase.name, func(t *testing.T) {
//proto: func (v label.Value) Emit() string {
have := testcase.v.Emit()
if have != testcase.want {
t.Errorf("Want: %s, but have: %s", testcase.want, have)
}
})
}
}