'a'
mh-two-thousand-and-two
2024-04-12 44d2c92345cd156a59fc327b3060292a282d2893
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'use strict';
 
var assert = require('assert');
var parseInterval = require('./').default;
 
describe('Parser', function () {
 
    describe('should return null if', function () {
 
        it('input is invalid', function () {
            assert.equal(null, parseInterval('INVALID INPUT'));
            assert.equal(null, parseInterval('1,2'));
            assert.equal(null, parseInterval('[]'));
            assert.equal(null, parseInterval(']['));
        });
 
        it('left value more than right value', function () {
            assert.equal(null, parseInterval('[2,-2]'));
            assert.equal(null, parseInterval('[Infinity,-2]'));
            assert.equal(null, parseInterval('[1,-Infinity]'));
        });
 
        it('value equals, but not included to interval', function () {
            assert.equal(null, parseInterval('[2,2)'));
            assert.equal(null, parseInterval('(2,2]'));
            assert.equal(null, parseInterval('[2,2['));
            assert.equal(null, parseInterval(']2,2]'));
            assert.equal(null, parseInterval('(2,2)'));
            assert.equal(null, parseInterval(']2,2['));
            assert.equal(null, parseInterval('(2)'));
            assert.equal(null, parseInterval(']2['));
            assert.equal(null, parseInterval('(Infinity,Infinity]'));
        });
 
    });
 
    describe('should right work', function () {
 
        it('in full form', function () {
            assert.deepEqual({
                from: {
                    value: -10,
                    included: true
                },
                to: {
                    value: 10,
                    included: false
                }
            }, parseInterval('[-10,10)'));
        });
 
        it('in not full form', function () {
            assert.deepEqual({
                from: {
                    value: 10,
                    included: true
                },
                to: {
                    value: 10,
                    included: true
                }
            }, parseInterval('[10]'));
 
            assert.deepEqual({
                from: {
                    value: 10,
                    included: true
                },
                to: {
                    value: Infinity,
                    included: true
                }
            }, parseInterval('[10,]'));
 
            assert.deepEqual({
                from: {
                    value: -Infinity,
                    included: true
                },
                to: {
                    value: 10,
                    included: true
                }
            }, parseInterval('[,10]'));
 
            assert.deepEqual({
                from: {
                    value: -Infinity,
                    included: true
                },
                to: {
                    value: Infinity,
                    included: true
                }
            }, parseInterval('[,]'));
 
        });
 
    });
 
});