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test.js
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test.js
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'use strict'
const test = require('tape')
const sinkStream = require('stream-sink')
const isStream = require('is-stream')
const isPromise = require('is-promise')
const lines = require('.')
const asJSON = require('./data.json')
// In the 2022-11-25 dataset, because of the Fahrplanwechsel, there are multiple "RE1"
// routes; We want the ODEG one.
const RE1 = '23945_100'
test('filterById', (t) => {
const predicate = lines.filterById(2)
t.plan(6)
t.equal(predicate(), false)
t.equal(predicate({}), false)
t.equal(predicate([2]), false)
t.equal(predicate({id: 1 }), false)
t.equal(predicate({id: '2'}), false)
t.equal(predicate({id: 2 }), true)
t.end()
})
test('filterByKeys', (t) => {
t.test('returns false for invalid data', (t) => {
const predicate = lines.filterByKeys({a: 'foo'})
t.plan(3)
t.equal(predicate(), false)
t.equal(predicate([2]), false)
t.equal(predicate({}), false)
t.end()
})
t.test('compares strictly', (t) => {
const predicate = lines.filterByKeys({a: '1'})
t.plan(2)
t.equal(predicate({a: 1 }), false)
t.equal(predicate({a: '1'}), true)
t.end()
})
t.test('compares only *own* properties', (t) => {
const predicate = lines.filterByKeys({a: 'foo'})
const x = Object.create({a: 'foo'})
t.plan(1)
t.equal(predicate(x), false)
t.end()
})
t.test('compares multiple keys', (t) => {
const predicate = lines.filterByKeys({a: 'foo', b: 'bar'})
t.plan(4)
t.equal(predicate({a: 'bar', b: 'bar'}), false)
t.equal(predicate({a: 'bar', b: 'foo'}), false)
t.equal(predicate({a: 'foo', b: 'foo'}), false)
t.equal(predicate({a: 'foo', b: 'bar'}), true)
t.end()
})
})
test('lines', (t) => {
t.test('without `promised` flag', (t) => {
t.test('returns a stream', (t) => {
t.ok(isStream(lines({id: RE1})))
t.end()
})
t.test('filters correctly', (t) => {
t.plan(2)
lines({id: RE1})
.pipe(sinkStream('object'))
.then((data) => {
t.equal(data.length, 1)
t.equal(data[0].id, RE1)
t.end()
})
.catch(t.ifError)
})
t.test('filters correctly', (t) => {
t.plan(2)
lines(RE1)
.pipe(sinkStream('object'))
.then((data) => {
t.equal(data.length, 1)
t.equal(data[0].id, RE1)
t.end()
})
.catch(t.ifError)
})
t.test('all lines look valid', (t) => {
const s = lines('all')
s.on('error', t.ifError)
s.on('end', t.end)
s.on('data', (l) => {
t.equal(l.type, 'line')
t.equal(typeof l.id, 'string')
t.ok(l.id)
t.equal(typeof l.name, 'string')
t.ok(l.name)
t.equal(typeof l.operator, 'string')
t.ok(l.operator)
t.equal(typeof l.mode, 'string')
t.ok(l.mode)
t.equal(typeof l.product, 'string')
t.ok(l.product)
t.ok(Array.isArray(l.variants))
for (let v of l.variants) {
t.ok(v)
t.equal(typeof v.trips, 'number')
t.ok(Array.isArray(v.stops))
}
})
})
})
t.test('with `promised` flag', (t) => {
t.test('returns a promise', (t) => {
t.ok(isPromise(lines(true, {id: RE1})))
t.end()
})
t.test('filters correctly', (t) => {
t.plan(2)
lines(true, {id: RE1})
.then((data) => {
t.equal(data.length, 1)
t.equal(data[0].id, RE1)
t.end()
})
.catch(t.ifError)
})
t.test('filters correctly', (t) => {
t.plan(2)
lines(true, RE1)
.then((data) => {
t.equal(data.length, 1)
t.equal(data[0].id, RE1)
t.end()
})
.catch(t.ifError)
})
})
})
test('data.json', (t) => {
t.test('is deep-equal to data.ndjson', (t) => {
t.plan(1)
lines('all')
.pipe(sinkStream('object'))
.then(data => t.deepEqual(asJSON, data))
.catch(t.ifError)
})
})