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18 lines
417 B
TypeScript
18 lines
417 B
TypeScript
import * as assert from "assert";
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import { just, nothing } from "../../src/prelude/maybe.js";
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describe("just", () => {
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it("has a value", () => {
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assert.deepStrictEqual(just(3).isJust(), true);
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});
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it("has the inverse called get", () => {
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assert.deepStrictEqual(just(3).get(), 3);
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});
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});
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describe("nothing", () => {
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it("has no value", () => {
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assert.deepStrictEqual(nothing().isJust(), false);
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});
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});
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