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theme_data.spec.js
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theme_data.spec.js
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import { getLayersArray, topoSort } from 'src/services/theme_data/theme_data.service.js'
describe('Theme Data utility functions', () => {
describe('getLayersArray', () => {
const fixture = {
layer1: null,
layer2: 'layer1',
layer3a: 'layer2',
layer3b: 'layer2'
}
it('should expand layers properly (3b)', () => {
const out = getLayersArray('layer3b', fixture)
expect(out).to.eql(['layer1', 'layer2', 'layer3b'])
})
it('should expand layers properly (3a)', () => {
const out = getLayersArray('layer3a', fixture)
expect(out).to.eql(['layer1', 'layer2', 'layer3a'])
})
it('should expand layers properly (2)', () => {
const out = getLayersArray('layer2', fixture)
expect(out).to.eql(['layer1', 'layer2'])
})
it('should expand layers properly (1)', () => {
const out = getLayersArray('layer1', fixture)
expect(out).to.eql(['layer1'])
})
})
describe('topoSort', () => {
const fixture1 = {
layerA: [],
layer1A: ['layerA'],
layer2A: ['layer1A'],
layerB: [],
layer1B: ['layerB'],
layer2B: ['layer1B'],
layer3AB: ['layer2B', 'layer2A']
}
// Same thing but messed up order
const fixture2 = {
layer1A: ['layerA'],
layer1B: ['layerB'],
layer2A: ['layer1A'],
layerB: [],
layer3AB: ['layer2B', 'layer2A'],
layer2B: ['layer1B'],
layerA: []
}
it('should make a topologically sorted array', () => {
const out = topoSort(fixture1, (node, inheritance) => inheritance[node])
// This basically checks all ordering that matters
expect(out.indexOf('layerA')).to.be.below(out.indexOf('layer1A'))
expect(out.indexOf('layer1A')).to.be.below(out.indexOf('layer2A'))
expect(out.indexOf('layerB')).to.be.below(out.indexOf('layer1B'))
expect(out.indexOf('layer1B')).to.be.below(out.indexOf('layer2B'))
expect(out.indexOf('layer2A')).to.be.below(out.indexOf('layer3AB'))
expect(out.indexOf('layer2B')).to.be.below(out.indexOf('layer3AB'))
})
it('order in object shouldn\'t matter', () => {
const out = topoSort(fixture2, (node, inheritance) => inheritance[node])
// This basically checks all ordering that matters
expect(out.indexOf('layerA')).to.be.below(out.indexOf('layer1A'))
expect(out.indexOf('layer1A')).to.be.below(out.indexOf('layer2A'))
expect(out.indexOf('layerB')).to.be.below(out.indexOf('layer1B'))
expect(out.indexOf('layer1B')).to.be.below(out.indexOf('layer2B'))
expect(out.indexOf('layer2A')).to.be.below(out.indexOf('layer3AB'))
expect(out.indexOf('layer2B')).to.be.below(out.indexOf('layer3AB'))
})
it('dependentless nodes should be first', () => {
const out = topoSort(fixture2, (node, inheritance) => inheritance[node])
// This basically checks all ordering that matters
expect(out.indexOf('layerA')).to.eql(0)
expect(out.indexOf('layerB')).to.eql(1)
})
it('ignores cyclic dependencies', () => {
const out = topoSort({ a: 'b', b: 'a', c: 'a' }, (node, inheritance) => [inheritance[node]])
expect(out.indexOf('a')).to.be.below(out.indexOf('c'))
})
})
})

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