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