41 lines
1 KiB
TypeScript
41 lines
1 KiB
TypeScript
import {
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assertEquals,
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assertThrows,
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} from "https://deno.land/std/testing/asserts.ts";
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import { isinstance, nn, nnu, nu } from "./typing.ts";
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Deno.test("isinstance", () => {
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class A {}
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class A1 extends A {}
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class A2 extends A {}
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class B {}
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const f: any[] = [5, null, undefined, new A(), new A1(), new B(), new A2()];
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const result = f.filter(isinstance(A));
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assertEquals(result, [f[3], f[4], f[6]]);
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});
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Deno.test("nn", () => {
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assertEquals(nn(undefined), undefined);
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assertEquals(nn(0), 0);
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assertEquals(nn(""), "");
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assertEquals(nn([]), []);
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assertThrows(() => nn(null), Error, "null value");
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});
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Deno.test("nu", () => {
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assertEquals(nu(null), null);
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assertEquals(nu(0), 0);
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assertEquals(nu(""), "");
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assertEquals(nu([]), []);
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assertThrows(() => nu(undefined), Error, "undefined value");
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});
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Deno.test("nnu", () => {
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assertEquals(nnu(0), 0);
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assertEquals(nnu(""), "");
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assertEquals(nnu([]), []);
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assertThrows(() => nnu(undefined), Error, "undefined value");
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assertThrows(() => nnu(null), Error, "null value");
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});
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