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opentelemetry-go/exporters/zipkin/env_test.go
Ben Ye 1e4a609495
support zipkin exporter endpoint env (#2490)
* support zipkin exporter endpoint env

Signed-off-by: Ben Ye <ben.ye@bytedance.com>

* update interface and changelog

Signed-off-by: Ben Ye <ben.ye@bytedance.com>

* add pr number

Signed-off-by: Ben Ye <ben.ye@bytedance.com>

* fix lint

Signed-off-by: Ben Ye <ben.ye@bytedance.com>

* add import

Signed-off-by: Ben Ye <ben.ye@bytedance.com>

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
2022-01-06 08:28:42 -08:00

63 lines
1.9 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 zipkin
import (
"os"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
ottest "go.opentelemetry.io/otel/internal/internaltest"
)
func TestEnvOrWithCollectorEndpointOptionsFromEnv(t *testing.T) {
testCases := []struct {
name string
envEndpoint string
defaultCollectorEndpoint string
expectedCollectorEndpoint string
}{
{
name: "overrides value via environment variables",
envEndpoint: "http://localhost:19411/foo",
defaultCollectorEndpoint: defaultCollectorURL,
expectedCollectorEndpoint: "http://localhost:19411/foo",
},
{
name: "environment variables is empty, will not overwrite value",
envEndpoint: "",
defaultCollectorEndpoint: defaultCollectorURL,
expectedCollectorEndpoint: defaultCollectorURL,
},
}
envStore := ottest.NewEnvStore()
envStore.Record(envEndpoint)
defer func() {
require.NoError(t, envStore.Restore())
}()
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
require.NoError(t, os.Setenv(envEndpoint, tc.envEndpoint))
endpoint := envOr(envEndpoint, tc.defaultCollectorEndpoint)
assert.Equal(t, tc.expectedCollectorEndpoint, endpoint)
})
}
}