@3fv/guard/lib/mjs/test/Guards.spec.js

TypeScript guard suite

import 'jest';
import { isPrimitiveProducer, isArray, isNil, isNumber, isString } from "../index.js";
test(`isNil`, () => {
    expect(isNil(null)).toBeTruthy();
    expect(isNil(undefined)).toBeTruthy();
    expect(isNil(1)).toBeFalsy();
});
test(`isNumber`, () => {
    expect(isNumber(1)).toBeTruthy();
    expect(isNumber("1")).toBeFalsy();
});
test(`isString`, () => {
    expect(isString(1)).toBeFalsy();
    expect(isString("1")).toBeTruthy();
});
test(`isPrimitiveProducer`, () => {
    expect(isPrimitiveProducer(Number)).toBeTruthy();
    expect(isPrimitiveProducer(Boolean)).toBeTruthy();
    expect(isPrimitiveProducer(String)).toBeTruthy();
    expect(isPrimitiveProducer(Object)).toBeFalsy();
    expect(isPrimitiveProducer("1")).toBeFalsy();
});
test(`isArray`, () => {
    expect(isArray(1)).toBeFalsy();
    expect(isArray("1")).toBeFalsy();
    expect(isArray(["1", 2])).toBeTruthy();
});
test(`instanceOf`, () => {
    class Test1 {
    }
    class Test2 extends Test1 {
    }
    let a = new Test1();
    let b = new Test2();
    expect(a).toBeInstanceOf(Test1);
    expect(a).not.toBeInstanceOf(Test2);
    expect(b).toBeInstanceOf(Test1);
    expect(b).toBeInstanceOf(Test2);
});
//# sourceMappingURL=Guards.spec.js.map