heck 0.5.0: heck::ToSnakeCase

# 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-snake-case"
version = "0.1.0"
dependencies = [
 "heck",
]

[package]
name = "sample-heck-snake-case"
version = "0.1.0"
edition = "2021"

[dependencies]
heck = "=0.5.0"

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 heck::ToSnakeCase 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::ToSnakeCase

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:e3320d82b54e75f7c925ee66972bb642020fa7daf3e60e52cffa7f37048541df","contract":["heck::ToSnakeCase::to_snake_case converts UpperCamelCase strings like \"WeAreGoingToInheritTheEarth\" to \"we_are_going_to_inherit_the_earth\"","heck::ToSnakeCase::to_snake_case splits consecutive uppercase acronyms like \"HTTPRequest\" into \"http_request\"","heck::ToSnakeCase::to_snake_case converts hyphen-delimited strings like \"kebab-case-string\" to \"kebab_case_string\""],"goal":"verify heck::ToSnakeCase in pkg:cargo/heck@0.5.0","kind":"HOW","packages":["pkg:cargo/heck@0.5.0"],"schemaVersion":1,"symbols":["heck::ToSnakeCase"]},"contractCommand":["cargo","run","--offline"],"environment":{"arch":"x64","ecosystem":"cargo","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::ToSnakeCase"],"verifierAdapter":"cargo@1"}

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

use heck::ToSnakeCase;

fn main() {
    assert_eq!("WeAreGoingToInheritTheEarth".to_snake_case(), "we_are_going_to_inherit_the_earth");
    assert_eq!("HTTPRequest".to_snake_case(), "http_request");
    assert_eq!("kebab-case-string".to_snake_case(), "kebab_case_string");
    assert_eq!("already_snake_case".to_snake_case(), "already_snake_case");
}

#[cfg(test)]
mod tests {
    use heck::ToSnakeCase;

    #[test]
    fn contract_to_snake_case() {
        assert_eq!("WeAreGoingToInheritTheEarth".to_snake_case(), "we_are_going_to_inherit_the_earth");
        assert_eq!("HTTPRequest".to_snake_case(), "http_request");
        assert_eq!("kebab-case-string".to_snake_case(), "kebab_case_string");
        assert_eq!("already_snake_case".to_snake_case(), "already_snake_case");
    }
}