ergogen/test/unit/filter.js
2022-01-08 23:51:03 +01:00

44 lines
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2.2 KiB
JavaScript

const filter = require('../../src/filter').parse
const anchor = require('../../src/anchor').parse
const Point = require('../../src/point')
describe('Filter', function() {
const points = {
one: new Point(0, 1, 0, {name: 'one', tags: ['odd']}),
two: new Point(0, 2, 0, {name: 'two', tags: ['even', 'prime']}),
three: new Point(0, 3, 0, {name: 'three', tags: {odd: 'yes', prime: 'yupp'}})
}
const names = points => points.map(p => p.meta.name)
it('similar', function() {
// no points filter to no points
filter(undefined, '', undefined).should.deep.equal([])
// and undefined config doesn't filter anything
filter(undefined, '', points).should.deep.equal(Object.values(points))
// objects just propagate to anchor (and then wrap in array for consistency)
filter({}, '', points).should.deep.equal([anchor({}, '', points)()])
// simple name string
names(filter('one', '', points)).should.deep.equal(['one'])
// simple name regex
names(filter('/^t/', '', points)).should.deep.equal(['two', 'three'])
// tags should count, too (one for the name, three for the odd tag)
names(filter('/^o/', '', points)).should.deep.equal(['one', 'three'])
// middle spec, should be the same as above, only explicit
names(filter('~ /^o/', '', points)).should.deep.equal(['one', 'three'])
// full spec (n would normally match both one and even, but on the tags level, it's just even)
names(filter('meta.tags ~ /n/', '', points)).should.deep.equal(['two'])
// negation
names(filter('meta.tags ~ -/n/', '', points)).should.deep.equal(['one', 'three'])
// arrays OR by default at odd levels levels (including top level)...
names(filter(['one', 'two'], '', points)).should.deep.equal(['one', 'two'])
// ...and AND at even levels
names(filter([['even', 'prime']], '', points)).should.deep.equal(['two'])
// arbitrary nesting should be possible
names(filter([[['even', 'odd'], 'prime']], '', points)).should.deep.equal(['two', 'three'])
// anything other than string/array/object/undefined is an error
filter.bind(this, 28, '', points).should.throw('Unexpected type')
})
})