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

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 github.com/hashicorp/go-version.Collection 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:
  - github.com/hashicorp/go-version.Collection

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:ef32f4d8e90f7b1360f55d60422692674bbf9832a6918c7c37b65bcd105aa9b1","contract":["version.Collection wraps []*version.Version and implements sort.Interface (Len, Less, Swap)","sort.Sort(version.Collection(versions)) orders semantic versions in ascending order including prereleases before release"],"goal":"verify github.com/hashicorp/go-version.Collection 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":["github.com/hashicorp/go-version.Collection"]},"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":["github.com/hashicorp/go-version.Collection"],"verifierAdapter":"golang@1"}

module example.com/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 github.com/hashicorp/go-version.Collection 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": [
    "github.com/hashicorp/go-version.Collection"
  ]
}

package main

import (
	"fmt"
	"os"
	"sort"

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

func main() {
	raw := []string{"1.1.0", "0.7.1", "1.4.0-beta", "1.4.0", "0.5.0"}
	versions := make([]*version.Version, len(raw))
	for i, r := range raw {
		v, err := version.NewVersion(r)
		if err != nil {
			fmt.Fprintf(os.Stderr, "unexpected NewVersion error: %v\n", err)
			os.Exit(1)
		}
		versions[i] = v
	}

	col := version.Collection(versions)
	if col.Len() != 5 {
		fmt.Fprintf(os.Stderr, "expected Len() == 5, got %d\n", col.Len())
		os.Exit(1)
	}
	if !col.Less(1, 0) {
		fmt.Fprintf(os.Stderr, "expected 0.7.1 < 1.1.0\n")
		os.Exit(1)
	}

	sort.Sort(col)

	expected := []string{"0.5.0", "0.7.1", "1.1.0", "1.4.0-beta", "1.4.0"}
	for i, exp := range expected {
		if got := col[i].Original(); got != exp {
			fmt.Fprintf(os.Stderr, "index %d: expected %s, got %s\n", i, exp, got)
			os.Exit(1)
		}
	}
}