lucene-filter/src/operators/or-not.test.js

Data filter for lucene queries

const tape      = require('tape');
const operators = require('./index');

const orNot = operators['OR NOT'];

const minus = n => () => -n(),
  zero  = () => 0,
  one   = () => 1,
  two   = () => 2,
  three = () => 3,
  four  = () => 4,
  five  = () => 5;

tape('Verifying positive numbers', async t => {
  t.plan(5);
  t.equal(orNot(zero , one  )(), -1, '0 |! 1 == -1');
  t.equal(orNot(one  , two  )(), -2, '1 |! 2 == -2');
  t.equal(orNot(two  , three)(), -3, '2 |! 3 == -3');
  t.equal(orNot(three, four )(), -4, '3 |! 4 == -4');
  t.equal(orNot(four , five )(), -5, '4 |! 5 == -5');
});

tape('Mixing negative numbers', async t => {
  t.plan(2);
  t.equal(orNot(minus(two),       one )(), -2, '-2 |! -1 = -2');
  t.equal(orNot(      two , minus(one))(),  2, ' 2 |! -1 =  2');
});

tape('Matching abs', async t => {
  t.plan(1);
  t.equal(orNot(minus(two), two)(), -2, '-2 |! 2 == -2');
});