tests: add golden path tests for auths init

crates/auths-cli/tests/cases/golden_path.rs

@@ -0,0 +1,74 @@
+use super::helpers::TestEnv;
+
+/// Golden path end-to-end: init → commit → sign → verify → JSON output.
+///
+/// Guards the most critical user flow against regressions.
+#[test]
+fn test_golden_path_init_sign_verify() {
+    let env = TestEnv::new();
+    env.init_identity();
+
+    // Create a file, stage, and commit (auto-signed via gpgsign=true)
+    std::fs::write(env.repo_path.join("hello.txt"), "hello world").unwrap();
+
+    let add = env.git_cmd().args(["add", "hello.txt"]).output().unwrap();
+    assert!(add.status.success(), "git add failed");
+
+    let commit = env
+        .git_cmd()
+        .args(["commit", "-m", "initial commit"])
+        .output()
+        .unwrap();
+    assert!(
+        commit.status.success(),
+        "git commit failed: {}",
+        String::from_utf8_lossy(&commit.stderr)
+    );
+
+    // Explicitly re-sign via `auths sign HEAD`
+    let sign_output = env.cmd("auths").args(["sign", "HEAD"]).output().unwrap();
+    assert!(
+        sign_output.status.success(),
+        "auths sign HEAD failed: {}",
+        String::from_utf8_lossy(&sign_output.stderr)
+    );
+
+    // Verify with JSON output
+    let signers = env.allowed_signers_path();
+    let verify_output = env
+        .cmd("auths")
+        .args([
+            "verify",
+            "HEAD",
+            "--json",
+            "--allowed-signers",
+            signers.to_str().unwrap(),
+        ])
+        .output()
+        .unwrap();
+    assert!(
+        verify_output.status.success(),
+        "auths verify HEAD --json failed: {}",
+        String::from_utf8_lossy(&verify_output.stderr)
+    );
+
+    // Parse and validate JSON structure
+    let stdout = String::from_utf8(verify_output.stdout).unwrap();
+    let result: serde_json::Value =
+        serde_json::from_str(&stdout).expect("verify --json should produce valid JSON");
+
+    assert_eq!(result["valid"], true, "golden path commit must be valid");
+    assert!(
+        result["commit"].is_string(),
+        "JSON should contain a 'commit' field with the SHA"
+    );
+    assert_eq!(
+        result["ssh_valid"], true,
+        "SSH signature must be valid after explicit sign"
+    );
+    assert!(
+        result["error"].is_null(),
+        "no error expected on successful verify, got: {:?}",
+        result["error"]
+    );
+}

crates/auths-cli/tests/cases/mod.rs

@@ -1,4 +1,5 @@
 mod doctor;
+mod golden_path;
 mod helpers;
 mod init;
 mod json_output;