github.com/hashicorp/go-version v1.2.0: version.NewVersion

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify version.NewVersion in pkg:golang/github.com/hashicorp/go-version@v1.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/hashicorp/go-version@v1.2.0
Demonstrate these symbols/APIs:
  - version.NewVersion

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:37c078478abc1147ebf118a090cc0763ffa601d58099ba802b373eaaf95d77b5","contract":["version.NewVersion(\"1.2.0\") parses a standard semantic version into a *version.Version with Segments() == []int{1, 2, 0}, String() == \"1.2.0\", and empty Prerelease()/Metadata()","version.NewVersion(\"v1.2.0-beta.1+exp.sha.5114f85\") strips the leading 'v' while preserving Original(), extracts Prerelease() == \"beta.1\" and Metadata() == \"exp.sha.5114f85\", and compares LessThan(\"1.2.0\")","version.NewVersion(\"1.2\") normalizes two-segment version strings so Equal and Compare treat \"1.2\" and \"1.2.0\" as equivalent","version.NewVersion returns a non-nil error when given an empty or malformed version string"],"goal":"verify version.NewVersion in pkg:golang/github.com/hashicorp/go-version@v1.2.0","kind":"HOW","packages":["pkg:golang/github.com/hashicorp/go-version@v1.2.0"],"schemaVersion":1,"symbols":["version.NewVersion"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/github.com/hashicorp/go-version@v1.2.0"],"schemaVersion":1,"subject":"pkg:golang/github.com/hashicorp/go-version@v1.2.0","symbols":["version.NewVersion"],"verifierAdapter":"golang@1"}

module sample

go 1.21

require github.com/hashicorp/go-version v1.2.0

github.com/hashicorp/go-version v1.2.0 h1:3vNe/fWF5CBgRIguda1meWhsZHy3m8gCJ5wx+dIzX/E=
github.com/hashicorp/go-version v1.2.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=

{
  "schemaVersion": 1,
  "goal": "verify version.NewVersion in pkg:golang/github.com/hashicorp/go-version@v1.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/hashicorp/go-version@v1.2.0"
  ],
  "symbols": [
    "version.NewVersion"
  ]
}

package main

import (
	"fmt"
	"os"
	"reflect"

	version "github.com/hashicorp/go-version"
)

func assert(cond bool, msg string) {
	if !cond {
		fmt.Fprintln(os.Stderr, "assertion failed:", msg)
		os.Exit(1)
	}
}

func main() {
	v1, err := version.NewVersion("1.2.0")
	assert(err == nil && v1 != nil, "NewVersion(\"1.2.0\") should succeed")
	assert(v1.String() == "1.2.0", "normalized string should be 1.2.0")
	assert(v1.Original() == "1.2.0", "original string should be 1.2.0")
	assert(reflect.DeepEqual(v1.Segments(), []int{1, 2, 0}), "segments should be [1, 2, 0]")
	assert(v1.Prerelease() == "", "prerelease should be empty")
	assert(v1.Metadata() == "", "metadata should be empty")

	v2, err := version.NewVersion("v1.2.0-beta.1+exp.sha.5114f85")
	assert(err == nil && v2 != nil, "NewVersion with v prefix, prerelease, and metadata should succeed")
	assert(v2.Original() == "v1.2.0-beta.1+exp.sha.5114f85", "Original preserves input string")
	assert(v2.Prerelease() == "beta.1", "Prerelease should be beta.1")
	assert(v2.Metadata() == "exp.sha.5114f85", "Metadata should be exp.sha.5114f85")
	assert(v2.LessThan(v1), "prerelease 1.2.0-beta.1 should be less than 1.2.0")
	assert(v1.GreaterThan(v2), "1.2.0 should be greater than 1.2.0-beta.1")

	v3, err := version.NewVersion("1.2")
	assert(err == nil && v3 != nil, "NewVersion(\"1.2\") should succeed")
	assert(v1.Equal(v3), "1.2.0 and 1.2 should be equal")
	assert(v1.Compare(v3) == 0, "Compare(1.2.0, 1.2) should be 0")

	_, err = version.NewVersion("invalid.version.string")
	assert(err != nil, "NewVersion on invalid input should return non-nil error")

	_, err = version.NewVersion("")
	assert(err != nil, "NewVersion on empty string should return non-nil error")
}