hemx/slhx-core/tests/effect_batch.rs

use slhx_core::{event, navigate, redirect, replace, Atom, AtomSnapshot, AtomState, BuildFingerprint, Effect, EffectBatch, Form, IntoEffect, KeyedSlot, NavigateMode, Payload, ResourceKind, SafeHtml, ScopeKey, Slot};

#[test]
fn effect_batch_wire_round_trips() {
    let count = Slot::<u32>::new(1);
    let todos = KeyedSlot::<u64, String>::new(2);
    let user = Atom::<String>::new(3);

    let batch = (
        count.text(2),
        todos.append(7, "Buy milk"),
        todos.replace(7, "Buy oat milk"),
        user.set("Ada"),
        navigate("/todos"),
        event("toast", "Saved"),
    )
        .into_batch(BuildFingerprint(42));

    let bytes = batch.to_wire();
    assert_eq!(&bytes[..4], b"SLHX");
    let decoded = EffectBatch::from_wire(&bytes).unwrap();

    assert_eq!(decoded, batch);
    assert!(decoded.is_compatible());
}

#[test]
fn keyed_slot_replace_uses_scoped_resource_ref() {
    let todos = KeyedSlot::<u64, String>::new(9);
    let effect = todos.replace(12, "done");

    let Effect::Put { target, payload } = effect else {
        panic!("expected Put");
    };

    assert_eq!(target.resource.kind, ResourceKind::Slot);
    assert_eq!(target.resource.id, 9);
    assert_eq!(target.scope, Some(ScopeKey::KeyValue(String::from("12"))));
    assert_eq!(payload, Payload::Text(String::from("done")));
}

#[test]
fn tuple_composition_supports_arity_twelve() {
    let slot = Slot::<u8>::new(1);
    let batch = (
        slot.text(1),
        slot.text(2),
        slot.text(3),
        slot.text(4),
        slot.text(5),
        slot.text(6),
        slot.text(7),
        slot.text(8),
        slot.text(9),
        slot.text(10),
        slot.text(11),
        slot.text(12),
    )
        .into_batch(BuildFingerprint(1));

    assert_eq!(batch.ops.len(), 12);
}

#[test]
fn generated_form_helpers_target_form_fields() {
    let signup = Form::<()>::new(4);

    let Effect::Emit { name, payload } = signup.error("email", "Use your work email") else {
        panic!("expected Emit");
    };

    assert_eq!(name, "slhx:form-error");
    assert_eq!(payload, "4\u{1f}email\u{1f}Use your work email");

    let Effect::Focus { target } = signup.focus("email") else {
        panic!("expected Focus");
    };
    assert_eq!(target.scope, Some(ScopeKey::Field(String::from("email"))));
}

#[test]
fn slot_html_requires_explicit_safe_html() {
    let content = Slot::<String>::new(10);
    let Effect::Put { payload, .. } = content.html(SafeHtml::trusted("<strong>ok</strong>")) else {
        panic!("expected Put");
    };

    assert_eq!(payload, Payload::Html(String::from("<strong>ok</strong>")));
}

#[test]
fn atom_state_bootstrap_is_postcard_round_trippable() {
    let state = AtomState {
        atoms: vec![AtomSnapshot {
            id: 7,
            bytes: vec![1, 2, 3],
        }],
    };

    let bytes = state.to_postcard().unwrap();
    assert_eq!(AtomState::from_postcard(&bytes).unwrap(), state);
}

#[test]
fn navigation_helpers_choose_explicit_modes() {
    let Effect::Navigate { mode, .. } = navigate("/docs") else {
        panic!("expected Navigate");
    };
    assert_eq!(mode, NavigateMode::Push);

    let Effect::Navigate { mode, .. } = replace("/docs") else {
        panic!("expected Navigate");
    };
    assert_eq!(mode, NavigateMode::Replace);

    let Effect::Navigate { mode, .. } = redirect("/login") else {
        panic!("expected Navigate");
    };
    assert_eq!(mode, NavigateMode::Redirect);
}

#[test]
fn build_fingerprint_is_deterministic_from_abi_parts() {
    let a = BuildFingerprint::from_parts(&[1, 2, 3, 4]);
    let b = BuildFingerprint::from_parts(&[1, 2, 3, 4]);
    let c = BuildFingerprint::from_parts(&[1, 2, 3, 5]);

    assert_eq!(a, b);
    assert_ne!(a, c);
}