warble-claude-code 0.4.0

//! This back-end's half of the shared provider-composition conformance fixture.
//!
//! The fragment format is parsed twice in this repo — here and in `dispatcher/vercel` — because each
//! back-end composes into its own target's capability types. Duplicated logic drifts unless
//! something holds it still, so both sides assert the same scenarios from
//! `dispatcher/conformance-fixtures/provider-composition.json`. A change to the merge or safety
//! rules on one side fails here until the other side follows, or until the fixture is updated
//! deliberately.
//!
//! Only engine-neutral rules live in the fixture. How a granted tool is *spelled* is engine-specific
//! and is asserted in `emit_tests.rs` instead.

use serde_json::Value;
use warble_claude_code::{parse_provider_fragments, TargetId};

const FIXTURE: &str = concat!(
    env!("CARGO_MANIFEST_DIR"),
    "/../conformance-fixtures/provider-composition.json"
);

/// Render one fixture scenario's fragments as the YAML a real `--provider` file would contain, so
/// the parser under test is the same one a user's file goes through.
fn fragments_yaml(scenario: &Value) -> String {
    let mut docs = Vec::new();
    for fragment in scenario["fragments"].as_array().expect("fragments array") {
        let mut doc = serde_json::Map::new();
        doc.insert("fragment_version".into(), Value::String("0.1".into()));
        doc.insert("provider".into(), fragment["provider"].clone());
        doc.insert(
            "engine".into(),
            fragment
                .get("engine")
                .cloned()
                .unwrap_or_else(|| Value::String("claude-code".into())),
        );
        for key in ["capabilities", "tools"] {
            if let Some(v) = fragment.get(key) {
                doc.insert(key.into(), v.clone());
            }
        }
        docs.push(Value::Object(doc));
    }
    serde_yaml::to_string(&serde_json::json!({ "providers": docs })).expect("fixture serializes")
}

#[test]
fn composition_matches_the_shared_conformance_fixture() {
    let fixture: Value =
        serde_json::from_str(&std::fs::read_to_string(FIXTURE).expect("read fixture"))
            .expect("fixture parses");
    let scenarios = fixture["scenarios"].as_array().expect("scenarios array");
    assert!(!scenarios.is_empty(), "fixture must carry scenarios");

    for scenario in scenarios {
        let name = scenario["name"].as_str().expect("scenario name");
        let fragments =
            parse_provider_fragments(&fragments_yaml(scenario)).expect("fragments parse");
        let target = TargetId::Headless;
        let composed =
            warble_claude_code::compose_for_conformance(target.profile(), &fragments, target);

        match scenario["expect"].as_str().expect("expect") {
            "ok" => {
                let composed =
                    composed.unwrap_or_else(|e| panic!("[{name}] expected ok, got: {e}"));
                if let Some(cap) = scenario["expect_capability_present"].as_str() {
                    assert!(
                        composed.contains(&cap.to_string()),
                        "[{name}] composed profile must contain '{cap}'"
                    );
                }
            }
            "error" => {
                let err = composed
                    .err()
                    .unwrap_or_else(|| panic!("[{name}] expected an error, composition succeeded"));
                let needle = scenario["error_contains"].as_str().expect("error_contains");
                assert!(
                    err.to_string().contains(needle),
                    "[{name}] error should contain {needle:?}, got: {err}"
                );
            }
            other => panic!("[{name}] unknown expect '{other}'"),
        }
    }
}