@bitbite/filtered-list/test/FilteredList.test.ts

filter a list of items

/// <reference path="../index.d.ts" />

import test from "ava";
import { FilteredList, And, Or, Not } from "../src/index";

test('filter numbers list', t => {
    const filteredList = new FilteredList<number>([1,2,3,4,5])
    const lg3 = (num: number) => num > 3;
    const filtered = filteredList.assert(lg3)
    t.deepEqual(filtered, [4,5])
})

test('filter list using And Operator', t => {
    const filteredList = new FilteredList<number>([1,2,3,4,5])
    const lg2 = (num: number) => num > 2;
    const lt4 = (num: number) => num < 4;
    const lt4Andlg2 = And<Number>(lt4, lg2);
    const filtered = filteredList.assert(lt4Andlg2)
    t.deepEqual(filtered, [3])
})

test('filter list using Or Operator', t => {
    const filteredList = new FilteredList<number>([1,2,3,4,5])
    const lt2 = (num: number) => num < 2;
    const lg4 = (num: number) => num > 4;
    const lt2Orlg4 = Or<number>(lt2, lg4);
    const filtered = filteredList.assert(lt2Orlg4)
    t.deepEqual(filtered, [1,5])
    
})

test('filter list using Not Operator', t => {
    const filteredList = new FilteredList<number>([1,2,3,4,5])
    const is3 = (num: number) => num === 3;
    const notIs3 = Not<number>(is3);
    const filtered = filteredList.assert(notIs3)
    t.deepEqual(filtered, [1,2,4,5])
})