38 lines
984 B
TypeScript
38 lines
984 B
TypeScript
import { expect, test } from "./deps.test.ts";
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import { isinstance, nn, nnu, nu } from "./typing.ts";
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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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expect(result).toEqual([f[3], f[4], f[6]]);
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});
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test("nn", () => {
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expect(nn(undefined)).toBeUndefined();
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expect(nn(0)).toBe(0);
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expect(nn("")).toBe("");
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expect(nn([])).toEqual([]);
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expect(() => nn(null)).toThrow("null value");
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});
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test("nu", () => {
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expect(nu(null)).toBe(null);
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expect(nu(0)).toBe(0);
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expect(nu("")).toBe("");
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expect(nu([])).toEqual([]);
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expect(() => nu(undefined)).toThrow("undefined value");
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});
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test("nnu", () => {
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expect(nnu(0)).toBe(0);
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expect(nnu("")).toBe("");
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expect(nnu([])).toEqual([]);
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expect(() => nnu(undefined)).toThrow("undefined value");
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expect(() => nnu(null)).toThrow("null value");
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});
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