zmij 1.0.23: zmij::Buffer::format

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

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

[[package]]
name = "zmij"
version = "1.0.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "29666d0abbfad1e3dc4dcf6144730dd3a3ab225bbbdac83319345b1b44ccfc1b"

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

[dependencies]
zmij = "=1.0.23"

[[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 zmij::Buffer::format in pkg:cargo/zmij@1.0.23
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/zmij@1.0.23
Demonstrate these symbols/APIs:
  - zmij::Buffer::format

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:sha256:393ee8d0ac9a6de6dc30a57592dad619326009cbea9edf50048d179c159924bb","contract":["Buffer::new creates a new buffer for floating point formatting","Buffer::format formats an f64 floating point number to decimal string","Buffer::format formats an f32 floating point number to decimal string","Buffer::format formats negative and zero floating point numbers","Buffer::format handles special floating point values including NaN and infinity"],"goal":"verify zmij::Buffer::format in pkg:cargo/zmij@1.0.23","kind":"HOW","packages":["pkg:cargo/zmij@1.0.23"],"schemaVersion":1,"symbols":["zmij::Buffer::format"]},"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/zmij@1.0.23"],"schemaVersion":1,"subject":"pkg:cargo/zmij@1.0.23","symbols":["zmij::Buffer::format"],"verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify zmij::Buffer::format in pkg:cargo/zmij@1.0.23",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/zmij@1.0.23"
  ],
  "symbols": [
    "zmij::Buffer::format"
  ]
}

//! Clean-room verification sample for zmij.

pub use zmij::*;

use zmij::Buffer;

fn main() {
    // 1. Buffer::new creates a new buffer for floating point formatting
    let mut buffer = Buffer::new();

    // 2. Buffer::format formats an f64 floating point number to decimal string
    let formatted_f64 = buffer.format(1.234f64);
    assert_eq!(formatted_f64, "1.234");

    // 3. Buffer::format formats an f32 floating point number to decimal string
    let formatted_f32 = buffer.format(5.678f32);
    assert_eq!(formatted_f32, "5.678");

    // 4. Buffer::format formats negative and zero floating point numbers
    let formatted_zero = buffer.format(0.0f64);
    assert_eq!(formatted_zero, "0.0");
    let formatted_neg = buffer.format(-42.5f64);
    assert_eq!(formatted_neg, "-42.5");

    // 5. Buffer::format handles special floating point values including NaN and infinity
    let formatted_nan = buffer.format(f64::NAN);
    assert_eq!(formatted_nan, "NaN");
    let formatted_inf = buffer.format(f64::INFINITY);
    assert_eq!(formatted_inf, "inf");
    let formatted_neginf = buffer.format(f64::NEG_INFINITY);
    assert_eq!(formatted_neginf, "-inf");

    println!("All zmij::Buffer::format contract assertions passed.");
}