// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package metric

import (
	"regexp"
	"testing"

	"github.com/stretchr/testify/assert"
)

// regex taken from https://github.com/Masterminds/semver/tree/v3.1.1
var versionRegex = regexp.MustCompile(`^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)` +
	`(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)` +
	`(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?` +
	`(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$`)

func TestVersionSemver(t *testing.T) {
	v := version()
	assert.Regexp(t, versionRegex, v)
}