truth-mirror 0.3.0

Truthfulness gate and adversarial reviewer harness for AI coding agents.
Documentation 
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use std::{fs, path::Path};

use assert_cmd::Command;
use predicates::prelude::*;

fn write(path: &Path, contents: &str) {
    fs::write(path, contents).unwrap();
}

#[test]
fn commit_msg_gate_accepts_evidenced_claim() {
    let temp = tempfile::tempdir().unwrap();
    let commit_msg = temp.path().join("COMMIT_EDITMSG");
    write(
        &commit_msg,
        "feat: claim parser\n\nCLAIM: add parser | verified: cargo test | evidence: tests:cargo-test\n",
    );

    Command::cargo_bin("truth-mirror")
        .unwrap()
        .args(["gate", "--commit-msg", commit_msg.to_str().unwrap()])
        .assert()
        .success();
}

#[test]
fn commit_msg_gate_rejects_missing_claim() {
    let temp = tempfile::tempdir().unwrap();
    let commit_msg = temp.path().join("COMMIT_EDITMSG");
    write(&commit_msg, "feat: claim parser\n");

    Command::cargo_bin("truth-mirror")
        .unwrap()
        .args(["gate", "--commit-msg", commit_msg.to_str().unwrap()])
        .assert()
        .failure()
        .stderr(predicate::str::contains("missing CLAIM"));
}

#[test]
fn commit_msg_gate_rejects_completion_without_evidence() {
    let temp = tempfile::tempdir().unwrap();
    let commit_msg = temp.path().join("COMMIT_EDITMSG");
    write(
        &commit_msg,
        "feat: done parser\n\nCLAIM: complete parser | verified: cargo test\n",
    );

    Command::cargo_bin("truth-mirror")
        .unwrap()
        .args(["gate", "--commit-msg", commit_msg.to_str().unwrap()])
        .assert()
        .failure()
        .stderr(predicate::str::contains(
            "completion wording lacks evidence",
        ));
}

#[test]
fn commit_msg_gate_rejects_fake_marker_in_diff_file() {
    let temp = tempfile::tempdir().unwrap();
    let commit_msg = temp.path().join("COMMIT_EDITMSG");
    let diff = temp.path().join("staged.diff");
    write(
        &commit_msg,
        "feat: claim parser\n\nCLAIM: add parser | verified: cargo test | evidence: tests:cargo-test\n",
    );
    write(
        &diff,
        "diff --git a/src/lib.rs b/src/lib.rs\n+ TODO-as-done\n",
    );

    Command::cargo_bin("truth-mirror")
        .unwrap()
        .args([
            "gate",
            "--commit-msg",
            commit_msg.to_str().unwrap(),
            "--diff-file",
            diff.to_str().unwrap(),
        ])
        .assert()
        .failure()
        .stderr(predicate::str::contains("TODO-as-done"));
}