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fnTest.js
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const { difference, uniqObjectArray } = require('./fpUtils');
// unique object array - function test
{
const uniqArray = uniqObjectArray(
[{ a: 10, b: 20}, { a: 10, b: 30 }, { a: 20, b: 40 }, { a: 50, b: 60 }, { a: 30, b: 100}, { a: 50, b: 100}],
(prev, cur) => prev.a === cur.a
);
const expectedResult = [ { a: 10, b: 20 },
{ a: 20, b: 40 },
{ a: 50, b: 60 },
{ a: 30, b: 100 }];
console.log('\n unique test results :: ', JSON.stringify(uniqArray) === JSON.stringify(expectedResult));
}
// difference object array - function test
{
const objArray = [{ a: 1, b: 2}, { a: 1, b: 3 }, { a: 1, b: 4 }, { a: 2, b: 2}, { a: 1 }, { b: 2 }, null, undefined, 0];
const removalArray = [{ a: 1, b: 2 }, { a: 2, b: 2 }, { b: 2 }];
const removalResult = difference(objArray, removalArray, (p, c) => p && c && p.a === c.a && p.b === c.b);
const expectedResult = [{ a: 1, b: 3 }, { a: 1, b: 4 }, { a: 1 }, null, undefined, 0];
console.log('difference test results :: ', JSON.stringify(removalResult) === JSON.stringify(expectedResult));
}