github.com/Masterminds/semver/v3 v3.2.0: semver.IncMajor

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 semver.IncMajor in pkg:golang/github.com/Masterminds/semver/v3@v3.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/Masterminds/semver/v3@v3.2.0
Demonstrate these symbols/APIs:
  - semver.IncMajor

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:df9f557b5c7c928f9f40f4e116f3caf8ab2e596ca5cddecb0d1028351829ad1a","contract":["semver.Version.IncMajor increments the major version number by one and resets minor and patch numbers to zero","semver.Version.IncMajor removes any prerelease and build metadata from the resulting version","semver.Version.IncMajor returns a new Version instance without mutating the original Version"],"goal":"verify semver.IncMajor in pkg:golang/github.com/Masterminds/semver/v3@v3.2.0","kind":"HOW","packages":["pkg:golang/github.com/Masterminds/semver/v3@v3.2.0"],"schemaVersion":1,"symbols":["semver.IncMajor"]},"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/Masterminds/semver/v3@v3.2.0"],"schemaVersion":1,"subject":"pkg:golang/github.com/Masterminds/semver/v3@v3.2.0","symbols":["semver.IncMajor"],"verifierAdapter":"golang@1"}

module example.com/sample

go 1.26

require github.com/Masterminds/semver/v3 v3.2.0

github.com/Masterminds/semver/v3 v3.2.0 h1:3MEsd0SM6jqZojhjLWWeBY+Kcjy9i6MQAeY7YgDP83g=
github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=

package main

import (
	"fmt"
	"os"

	"github.com/Masterminds/semver/v3"
)

func main() {
	v, err := semver.NewVersion("1.4.2-beta.1+exp.sha.5114f85")
	if err != nil {
		fmt.Fprintf(os.Stderr, "failed to parse version: %v\n", err)
		os.Exit(1)
	}

	nextMajor := v.IncMajor()
	fmt.Printf("Original version:   %s\n", v.String())
	fmt.Printf("Next major version: %s\n", nextMajor.String())
}

{
  "schemaVersion": 1,
  "goal": "verify semver.IncMajor in pkg:golang/github.com/Masterminds/semver/v3@v3.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/Masterminds/semver/v3@v3.2.0"
  ],
  "symbols": [
    "semver.IncMajor"
  ]
}

package main

import (
	"fmt"
	"os"

	"github.com/Masterminds/semver/v3"
)

func main() {
	// Assertion 1: semver.Version.IncMajor increments the major version number by one and resets minor and patch numbers to zero
	v1, err := semver.NewVersion("1.4.2")
	if err != nil {
		fmt.Fprintf(os.Stderr, "assertion 1 failed to parse: %v\n", err)
		os.Exit(1)
	}
	inc1 := v1.IncMajor()
	if inc1.Major() != 2 || inc1.Minor() != 0 || inc1.Patch() != 0 {
		fmt.Fprintf(os.Stderr, "assertion 1 failed: expected 2.0.0, got %s\n", inc1.String())
		os.Exit(1)
	}
	if inc1.String() != "2.0.0" {
		fmt.Fprintf(os.Stderr, "assertion 1 failed: expected string '2.0.0', got %q\n", inc1.String())
		os.Exit(1)
	}

	// Assertion 2: semver.Version.IncMajor removes any prerelease and build metadata from the resulting version
	v2, err := semver.NewVersion("1.2.3-alpha.1+build.10")
	if err != nil {
		fmt.Fprintf(os.Stderr, "assertion 2 failed to parse: %v\n", err)
		os.Exit(1)
	}
	inc2 := v2.IncMajor()
	if inc2.Prerelease() != "" {
		fmt.Fprintf(os.Stderr, "assertion 2 failed: expected empty prerelease, got %q\n", inc2.Prerelease())
		os.Exit(1)
	}
	if inc2.Metadata() != "" {
		fmt.Fprintf(os.Stderr, "assertion 2 failed: expected empty metadata, got %q\n", inc2.Metadata())
		os.Exit(1)
	}
	if inc2.String() != "2.0.0" {
		fmt.Fprintf(os.Stderr, "assertion 2 failed: expected string '2.0.0', got %q\n", inc2.String())
		os.Exit(1)
	}

	// Assertion 3: semver.Version.IncMajor returns a new Version instance without mutating the original Version
	v3, err := semver.NewVersion("3.5.7-rc.2+sha.abcdef")
	if err != nil {
		fmt.Fprintf(os.Stderr, "assertion 3 failed to parse: %v\n", err)
		os.Exit(1)
	}
	_ = v3.IncMajor()
	if v3.Major() != 3 || v3.Minor() != 5 || v3.Patch() != 7 || v3.Prerelease() != "rc.2" || v3.Metadata() != "sha.abcdef" {
		fmt.Fprintf(os.Stderr, "assertion 3 failed: original version was mutated: %s\n", v3.String())
		os.Exit(1)
	}
	if v3.String() != "3.5.7-rc.2+sha.abcdef" {
		fmt.Fprintf(os.Stderr, "assertion 3 failed: original version string changed: %s\n", v3.String())
		os.Exit(1)
	}

	fmt.Println("All contract assertions passed.")
}