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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package resource
import (
"regexp"
"sync"
"testing"
"github.com/stretchr/testify/require"
semconv "go.opentelemetry.io/otel/semconv/v1.25.0"
)
func TestDefaultExperimental(t *testing.T) {
// Experimental attributes aren't present by default
res := Default()
require.False(t, res.Set().HasValue(semconv.ServiceInstanceIDKey))
// Reset cache and enable experimental resources
defaultResourceOnce = sync.Once{}
t.Setenv("OTEL_GO_X_RESOURCE", "true")
res = Default()
require.True(t, res.Set().HasValue(semconv.ServiceInstanceIDKey))
serviceInstanceID, ok := res.Set().Value(semconv.ServiceInstanceIDKey)
require.True(t, ok)
matched, err := regexp.MatchString("^[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}$", serviceInstanceID.AsString())
require.NoError(t, err)
require.True(t, matched)
}
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