autocfg 1.5.1

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

[[package]]
name = "autocfg"
version = "1.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"

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

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

[dependencies]
autocfg = "=1.5.1"

[[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 pkg:cargo/autocfg@1.5.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:cargo/autocfg@1.5.1
Required runtime conditions:
  - ecosystem: golang
  - language: go
  - packageManager: go@1.26.6
  - runtime: go@1.26.6

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:sha256:215685a89d387a4ea1b80936d5459e04bc91937825c26ebcc7984101db45b271","contract":["AutoCfg::with_dir creates an instance with a writable output directory","probe_rustc_version accurately evaluates version comparisons","probe_type detects standard types and rejects non-existent types","probe_trait detects standard traits and rejects non-existent traits","probe_expression validates expressions and rejects invalid syntax","probe_constant validates const-evaluable expressions and rejects non-const expressions","probe_raw compiles valid Rust code and returns error for invalid code"],"goal":"verify pkg:cargo/autocfg@1.5.1","kind":"HOW","packages":["pkg:cargo/autocfg@1.5.1"],"schemaVersion":1},"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/autocfg@1.5.1"],"schemaVersion":1,"subject":"pkg:cargo/autocfg@1.5.1","verifierAdapter":"cargo@1"}

{
  "schemaVersion": 1,
  "goal": "verify pkg:cargo/autocfg@1.5.1",
  "kind": "HOW",
  "packages": [
    "pkg:cargo/autocfg@1.5.1"
  ]
}

//! Clean-room verification sample for autocfg.

pub use autocfg::*;

use autocfg::AutoCfg;
use std::env;
use std::fs;

fn main() {
    let out_dir = env::temp_dir().join("autocfg_contract_test");
    let _ = fs::create_dir_all(&out_dir);

    // 1. AutoCfg::with_dir creates an instance with a writable directory
    let ac = AutoCfg::with_dir(&out_dir).expect("AutoCfg::with_dir should succeed");

    // 2. probe_rustc_version accurately evaluates version comparisons
    assert!(ac.probe_rustc_version(1, 0), "rustc version should be >= 1.0");
    assert!(!ac.probe_rustc_version(999, 0), "rustc version should not be >= 999.0");

    // 3. probe_type detects standard types and rejects non-existent types
    assert!(ac.probe_type("u64"), "u64 should be detected as a valid type");
    assert!(!ac.probe_type("NonExistentType_xyz_123"), "non-existent type should fail");

    // 4. probe_trait detects standard traits and rejects non-existent traits
    assert!(ac.probe_trait("Clone"), "Clone should be detected as a valid trait");
    assert!(!ac.probe_trait("NonExistentTrait_xyz_123"), "non-existent trait should fail");

    // 5. probe_expression validates expressions and rejects invalid syntax
    assert!(ac.probe_expression("1 + 1"), "valid expression should succeed");
    assert!(!ac.probe_expression("1 +++ ?"), "invalid syntax should fail");

    // 6. probe_constant validates const-evaluable expressions and rejects non-const expressions
    assert!(ac.probe_constant("42 * 2"), "const expression should succeed");
    assert!(!ac.probe_constant("\"invalid\" + 1"), "invalid const expression should fail");

    // 7. probe_raw compiles valid rust code and fails on invalid rust code
    assert!(ac.probe_raw("pub fn test_probe_raw() -> i32 { 100 }").is_ok(), "valid code should compile");
    assert!(ac.probe_raw("pub fn invalid_syntax(").is_err(), "syntax error should fail");

    let _ = fs::remove_dir_all(&out_dir);
    println!("All autocfg contract assertions passed successfully.");
}