heck 0.5.0: heck::ToShoutySnakeCase

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "heck"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"

[[package]]
name = "sample-heck"
version = "1.0.0"
dependencies = [
 "heck",
]

[package]
name = "sample-heck"
version = "1.0.0"
edition = "2021"
publish = false

[dependencies]
heck = "=0.5.0"

[[bin]]
name = "contract"
path = "test/contract.rs"

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 heck::ToShoutySnakeCase in pkg:cargo/heck@0.5.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/heck@0.5.0
Demonstrate these symbols/APIs:
  - heck::ToShoutySnakeCase

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:sha256:92ba9067d7a2e40ee2ea247b11d68c0791bf1eea770cbc4011ff75967258e0d6","contract":["ToShoutySnakeCase converts camelCase and PascalCase strings to uppercase with underscore separators","ToShoutySnakeCase converts kebab-case and spaced phrases to SHOUTY_SNAKE_CASE","ToShoutySnakeCase preserves existing shouty snake case strings","ToShoutySnakeCase handles empty strings by returning an empty string","ToShoutySnakeCase handles strings with acronyms and mixed boundaries"],"goal":"verify heck::ToShoutySnakeCase in pkg:cargo/heck@0.5.0","kind":"HOW","packages":["pkg:cargo/heck@0.5.0"],"schemaVersion":1,"symbols":["heck::ToShoutySnakeCase"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","distro":"alpine","ecosystem":"cargo","libc":"musl","os":"linux","packageManager":"cargo","schemaVersion":1},"license":"MIT-0","packages":["pkg:cargo/heck@0.5.0"],"schemaVersion":1,"subject":"pkg:cargo/heck@0.5.0","symbols":["heck::ToShoutySnakeCase"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify heck::ToShoutySnakeCase in pkg:cargo/heck@0.5.0",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/heck@0.5.0"
  ],
  "symbols": [
    "heck::ToShoutySnakeCase"
  ]
}

//! Clean-room verification sample for heck::ToShoutySnakeCase.

pub use heck::ToShoutySnakeCase;

use heck::ToShoutySnakeCase;

fn main() {
    // 1. ToShoutySnakeCase converts camelCase and PascalCase strings to uppercase with underscore separators
    assert_eq!("camelCase".to_shouty_snake_case(), "CAMEL_CASE");
    assert_eq!("PascalCase".to_shouty_snake_case(), "PASCAL_CASE");

    // 2. ToShoutySnakeCase converts kebab-case and spaced phrases to SHOUTY_SNAKE_CASE
    assert_eq!("kebab-case".to_shouty_snake_case(), "KEBAB_CASE");
    assert_eq!("hello world".to_shouty_snake_case(), "HELLO_WORLD");

    // 3. ToShoutySnakeCase preserves existing shouty snake case strings
    assert_eq!("ALREADY_SHOUTY_SNAKE".to_shouty_snake_case(), "ALREADY_SHOUTY_SNAKE");

    // 4. ToShoutySnakeCase handles empty strings by returning an empty string
    assert_eq!("".to_shouty_snake_case(), "");

    // 5. ToShoutySnakeCase handles strings with acronyms and mixed boundaries
    assert_eq!("XMLHttpRequest".to_shouty_snake_case(), "XML_HTTP_REQUEST");
    assert_eq!(
        "mixed_up_snake_case with some _spaces".to_shouty_snake_case(),
        "MIXED_UP_SNAKE_CASE_WITH_SOME_SPACES"
    );

    println!("All heck::ToShoutySnakeCase contract assertions passed successfully.");
}