@akala/core/dist/esm/test/binder.js

// eslint-disable-next-line @typescript-eslint/no-var-requires
import { Parser } from '../index.js';
import { Binding, ObservableObject } from '../observables/object.js';
import assert from 'assert';
import { it } from 'node:test';
const target = {
    foo: { bar: { a: 1, b: 'x', c: true } }
};
it('bindings should work', () => {
    let changeEventCalled = 0;
    const binding = new Binding(target, Parser.parameterLess.parse('foo?.bar?.a'));
    binding.onChanged(ev => {
        assert.ok(ev.value === undefined || ev.value > 1);
        changeEventCalled++;
    });
    let subChangeEventCalled = 0;
    const fooBinding = new Binding(target, Parser.parameterLess.parse('foo?'));
    const pipedBinding = new Binding(fooBinding, Parser.parameterLess.parse('bar?.a'));
    pipedBinding.onChanged(ev => {
        subChangeEventCalled++;
    });
    new ObservableObject(target).setValue('foo', { baz: { d: 2, e: 'y', f: false } });
    assert.strictEqual(changeEventCalled, 1);
    assert.strictEqual(target.foo.bar, undefined);
    assert.strictEqual(target.foo['baz']['d'], 2);
    changeEventCalled = 0;
    new ObservableObject(target.foo).setValue('bar', { a: 2, b: 'y', c: false });
    assert.strictEqual(changeEventCalled, 1);
    assert.strictEqual(target.foo.bar.a, 2);
    assert.strictEqual(target.foo['baz']['d'], 2);
    changeEventCalled = 0;
    new ObservableObject(target.foo.bar).setValue('a', 3);
    assert.strictEqual(changeEventCalled, 1);
    assert.strictEqual(target.foo.bar.a, 3);
    assert.strictEqual(target.foo['baz']['d'], 2);
    assert.strictEqual(subChangeEventCalled, 3);
});
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