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

TypeScript guard suite

import 'jest';
import { guard, getValue, setGuardErrorHandler } from "../index.js";
function throwErr() {
    throw new Error('err');
}
test(`getValue`, () => {
    let errorHandled = false;
    setGuardErrorHandler(() => errorHandled = true);
    expect(getValue(() => {
        throw new Error('err');
        // noinspection UnreachableCodeJS
        return 0;
    }, 1)).toBe(1);
    expect(errorHandled).toBeTruthy();
    expect(getValue(throwErr)).toBeUndefined();
    expect(getValue(() => 123, 1)).toBe(123);
    expect(getValue(() => true, false)).toBe(true);
});
test('guard', () => {
    expect(throwErr).toThrow();
    expect(() => guard(throwErr)).not.toThrow();
    const liftedGuard = guard.lift(throwErr);
    expect(typeof liftedGuard).toBe("function");
    expect(liftedGuard).not.toThrow();
});
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