import { describe, test, expect } from "vitest";
import _if from "./if.js";
describe("if", () => {
    test("does not update if the predicate is false", () => {
        const object = { a: 0 };
        let result = _if(false, { b: 1 }, object);
        expect(result).to.eql(object);
        result = _if(0, false, 1);
        expect(result).to.eql(0);
    });
    test("does update if the predicate is true", () => {
        const object = { a: 0 };
        const result = _if(true, { b: 1 })(object);
        expect(result).to.eql({ a: 0, b: 1 });
    });
    test("will use the result of a function passed as a predicate", () => {
        const object = { a: 0 };
        const aIsThree = (x) => x.a === 3;
        const result = _if(aIsThree, { b: 1 }, object);
        expect(result).to.eql({ a: 0 });
    });
    test("freezes the result", () => {
        expect(Object.isFrozen(_if(true, {})({}))).to.be.true;
        expect(Object.isFrozen(_if(false, {})({}))).to.be.true;
    });
});
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