71 lines
4.0 KiB
JavaScript
71 lines
4.0 KiB
JavaScript
const filter = require('../../src/filter').parse
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const anchor = require('../../src/anchor').parse
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const Point = require('../../src/point')
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describe('Filter', function() {
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it('without points', function() {
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filter(undefined, '').should.deep.equal([new Point()])
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filter(true, '').should.deep.equal([])
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filter(false, '').should.deep.equal([])
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filter({}, '').should.deep.equal([anchor({}, '', points)()])
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})
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const points = {
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one: new Point(0, 1, 0, {name: 'one', tags: ['odd']}),
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two: new Point(0, 2, 0, {name: 'two', tags: ['even', 'prime']}),
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three: new Point(0, 3, 0, {name: 'three', tags: {odd: 'yes', prime: 'yupp'}}),
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mirror_one: new Point(0, 1, 0, {name: 'mirror_one', tags: ['odd'], mirrored: true})
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}
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it('empty filter', function() {
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// an undefined config leads to a default point
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filter(undefined, '', points).should.deep.equal([new Point()])
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// true shouldn't filter anything, while false should filter everything
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filter(true, '', points).should.deep.equal(Object.values(points))
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filter(false, '', points).should.deep.equal([])
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// points should only be returned on their respective halves
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// - so `source` is every match
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filter(true, '', points, undefined, 'source').should.deep.equal(Object.values(points))
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// - `clone` is the mirror image of every match, which maps one to mirror_one, mirror_one to one, and two/three to nothing (as they don't have mirror parts)
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filter(true, '', points, undefined, 'clone').should.deep.equal([points.mirror_one, points.one])
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// - and `both` is every match plus its mirror image as well
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filter(true, '', points, undefined, 'both').should.deep.equal(Object.values(points))
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// objects just propagate to anchor (and then wrap in array for consistency)
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filter({}, '', points).should.deep.equal([anchor({}, '', points)()])
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filter({}, '', points, undefined, 'source').should.deep.equal([anchor({}, '', points)()])
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filter({}, '', points, undefined, 'clone').should.deep.equal([anchor({}, '', points)()])
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filter({}, '', points, undefined, 'both').should.deep.equal([anchor({}, '', points)()])
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})
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const names = points => points.map(p => p.meta.name)
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it('similar', function() {
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// simple name string
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names(filter('one', '', points)).should.deep.equal(['one'])
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// simple name regex
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names(filter('/^t/', '', points)).should.deep.equal(['two', 'three'])
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// tags should count, too (one and mirror_one for the name, three for the odd tag)
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names(filter('/^o/', '', points)).should.deep.equal(['one', 'three', 'mirror_one'])
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// middle spec, should be the same as above, only explicit
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names(filter('~ /^o/', '', points)).should.deep.equal(['one', 'three', 'mirror_one'])
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// full spec (/n/ would normally match both "one" and "even", but on the tags level, it's just even)
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names(filter('meta.tags ~ /n/', '', points)).should.deep.equal(['two'])
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names(filter('meta.name,meta.tags ~ /n/', '', points)).should.deep.equal(['one', 'two', 'mirror_one'])
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// negation
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names(filter('meta.tags ~ -/n/', '', points)).should.deep.equal(['one', 'three', 'mirror_one'])
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names(filter('meta.name,meta.tags ~ -/n/', '', points)).should.deep.equal(['three'])
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// arrays OR by default at odd levels (including top level)...
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names(filter(['one', 'two'], '', points)).should.deep.equal(['one', 'two'])
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// ...and AND at even levels
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names(filter([['even', 'prime']], '', points)).should.deep.equal(['two'])
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// arbitrary nesting should be possible
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names(filter([[['even', 'odd'], 'prime']], '', points)).should.deep.equal(['two', 'three'])
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// invalid regexes should throw meaningful errors
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filter.bind(this, '/\\/', '', points).should.throw('Invalid regex')
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// anything other than string/array/object/undefined is also an error
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filter.bind(this, 28, '', points).should.throw('Unexpected type')
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})
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})
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