github.com/huandu/xstrings v1.5.0

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 pkg:golang/github.com/huandu/xstrings@v1.5.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/huandu/xstrings@v1.5.0

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:ffa677fff0da89c604d5d2f8a4cac9e43eae5ba90dc907a7f94174760c5ca83d","contract":["xstrings.ToSnakeCase converts CamelCase string to snake_case","xstrings.ToCamelCase converts snake_case string to camelCase","xstrings.ToPascalCase converts snake_case string to PascalCase","xstrings.ToKebabCase converts CamelCase string to kebab-case"],"goal":"verify pkg:golang/github.com/huandu/xstrings@v1.5.0","kind":"HOW","packages":["pkg:golang/github.com/huandu/xstrings@v1.5.0"],"schemaVersion":1},"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/huandu/xstrings@v1.5.0"],"schemaVersion":1,"subject":"pkg:golang/github.com/huandu/xstrings@v1.5.0","verifierAdapter":"golang@1"}

module example.com/sample

go 1.22

require github.com/huandu/xstrings v1.5.0

github.com/huandu/xstrings v1.5.0 h1:2ag3IFq9ZDANvthTwTiqSSZLjDc+BedvHPAp5tJy2TI=
github.com/huandu/xstrings v1.5.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=

package main

import (
	"fmt"

	"github.com/huandu/xstrings"
)

func main() {
	snake := xstrings.ToSnakeCase("HelloWorld")
	camel := xstrings.ToCamelCase("hello_world")
	pascal := xstrings.ToPascalCase("hello_world")
	kebab := xstrings.ToKebabCase("HelloWorld")

	fmt.Printf("snake: %s, camel: %s, pascal: %s, kebab: %s\n", snake, camel, pascal, kebab)
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/github.com/huandu/xstrings@v1.5.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/huandu/xstrings@v1.5.0"
  ]
}

package main

import (
	"fmt"
	"os"

	"github.com/huandu/xstrings"
)

func main() {
	if got := xstrings.ToSnakeCase("HelloWorld"); got != "hello_world" {
		fmt.Fprintf(os.Stderr, "ToSnakeCase failed: got %q, want %q\n", got, "hello_world")
		os.Exit(1)
	}

	if got := xstrings.ToCamelCase("hello_world"); got != "helloWorld" {
		fmt.Fprintf(os.Stderr, "ToCamelCase failed: got %q, want %q\n", got, "helloWorld")
		os.Exit(1)
	}

	if got := xstrings.ToPascalCase("hello_world"); got != "HelloWorld" {
		fmt.Fprintf(os.Stderr, "ToPascalCase failed: got %q, want %q\n", got, "HelloWorld")
		os.Exit(1)
	}

	if got := xstrings.ToKebabCase("HelloWorld"); got != "hello-world" {
		fmt.Fprintf(os.Stderr, "ToKebabCase failed: got %q, want %q\n", got, "hello-world")
		os.Exit(1)
	}

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