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openlayers/test/spec/ol/format/polyline.test.js
Tim Schaub ad62739a6e Use blocked scoped variables 
In addition to using const and let, this also upgrades our linter config and removes lint (mostly whitespace).
2018-01-12 00:50:30 -07:00

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JavaScript
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import Feature from '../../../../src/ol/Feature.js';
import Polyline, * as polyline from '../../../../src/ol/format/Polyline.js';
import LineString from '../../../../src/ol/geom/LineString.js';
import {get as getProjection, transform} from '../../../../src/ol/proj.js';
describe('ol.format.Polyline', function() {
let format;
let points;
let flatPoints, encodedFlatPoints, flippedFlatPoints;
let floats, smallFloats, encodedFloats;
let signedIntegers, encodedSignedIntegers;
let unsignedIntegers, encodedUnsignedIntegers;
let points3857;
function resetTestingData() {
format = new Polyline();
points = [
[-120.20000, 38.50000],
[-120.95000, 40.70000],
[-126.45300, 43.25200]
];
flatPoints = [
-120.20000, 38.50000,
-120.95000, 40.70000,
-126.45300, 43.25200
];
flippedFlatPoints = [
38.50000, -120.20000,
40.70000, -120.95000,
43.25200, -126.45300
];
encodedFlatPoints = '_p~iF~ps|U_ulLnnqC_mqNvxq`@';
points3857 = [
transform([-120.20000, 38.50000], 'EPSG:4326', 'EPSG:3857'),
transform([-120.95000, 40.70000], 'EPSG:4326', 'EPSG:3857'),
transform([-126.45300, 43.25200], 'EPSG:4326', 'EPSG:3857')
];
floats = [0.00, 0.15, -0.01, -0.16, 0.16, 0.01];
smallFloats = [0.00000, 0.00015, -0.00001, -0.00016, 0.00016, 0.00001];
encodedFloats = '?]@^_@A';
signedIntegers = [0, 15, -1, -16, 16, 1];
encodedSignedIntegers = '?]@^_@A';
unsignedIntegers = [0, 30, 1, 31, 32, 2, 174];
encodedUnsignedIntegers = '?]@^_@AmD';
}
// Reset testing data
beforeEach(resetTestingData);
describe('#readProjectionFromText', function() {
it('returns the default projection', function() {
const projection = format.readProjectionFromText(encodedFlatPoints);
expect(projection).to.eql(getProjection('EPSG:4326'));
});
});
describe('encodeDeltas', function() {
it('returns expected value', function() {
const encodeDeltas = polyline.encodeDeltas;
expect(encodeDeltas(flippedFlatPoints, 2)).to.eql(encodedFlatPoints);
});
});
describe('decodeDeltas', function() {
it('returns expected value', function() {
const decodeDeltas = polyline.decodeDeltas;
expect(decodeDeltas(encodedFlatPoints, 2)).to.eql(flippedFlatPoints);
});
});
describe('encodeFloats', function() {
it('returns expected value', function() {
const encodeFloats = polyline.encodeFloats;
expect(encodeFloats(smallFloats)).to.eql(encodedFloats);
resetTestingData();
expect(encodeFloats(smallFloats, 1e5)).to.eql(encodedFloats);
expect(encodeFloats(floats, 1e2)).to.eql(encodedFloats);
});
});
describe('decodeFloats', function() {
it('returns expected value', function() {
const decodeFloats = polyline.decodeFloats;
expect(decodeFloats(encodedFloats)).to.eql(smallFloats);
expect(decodeFloats(encodedFloats, 1e5)).to.eql(smallFloats);
expect(decodeFloats(encodedFloats, 1e2)).to.eql(floats);
});
});
describe('encodeSignedIntegers', function() {
it('returns expected value', function() {
const encodeSignedIntegers = polyline.encodeSignedIntegers;
expect(encodeSignedIntegers(
signedIntegers)).to.eql(encodedSignedIntegers);
});
});
describe('decodeSignedIntegers', function() {
it('returns expected value', function() {
const decodeSignedIntegers = polyline.decodeSignedIntegers;
expect(decodeSignedIntegers(
encodedSignedIntegers)).to.eql(signedIntegers);
});
});
describe('encodeUnsignedIntegers', function() {
it('returns expected value', function() {
const encodeUnsignedIntegers = polyline.encodeUnsignedIntegers;
expect(encodeUnsignedIntegers(
unsignedIntegers)).to.eql(encodedUnsignedIntegers);
});
});
describe('decodeUnsignedIntegers', function() {
it('returns expected value', function() {
const decodeUnsignedIntegers = polyline.decodeUnsignedIntegers;
expect(decodeUnsignedIntegers(
encodedUnsignedIntegers)).to.eql(unsignedIntegers);
});
});
describe('encodeFloat', function() {
it('returns expected value', function() {
const encodeFloats = polyline.encodeFloats;
expect(encodeFloats([0.00000])).to.eql('?');
expect(encodeFloats([-0.00001])).to.eql('@');
expect(encodeFloats([0.00001])).to.eql('A');
expect(encodeFloats([-0.00002])).to.eql('B');
expect(encodeFloats([0.00002])).to.eql('C');
expect(encodeFloats([0.00015])).to.eql(']');
expect(encodeFloats([-0.00016])).to.eql('^');
expect(encodeFloats([-0.1], 10)).to.eql('@');
expect(encodeFloats([0.1], 10)).to.eql('A');
expect(encodeFloats([16 * 32 / 1e5])).to.eql('__@');
expect(encodeFloats([16 * 32 * 32 / 1e5])).to.eql('___@');
// from the "Encoded Polyline Algorithm Format" page at Google
expect(encodeFloats([-179.9832104])).to.eql('`~oia@');
});
});
describe('decodeFloat', function() {
it('returns expected value', function() {
const decodeFloats = polyline.decodeFloats;
expect(decodeFloats('?')).to.eql([0.00000]);
expect(decodeFloats('@')).to.eql([-0.00001]);
expect(decodeFloats('A')).to.eql([0.00001]);
expect(decodeFloats('B')).to.eql([-0.00002]);
expect(decodeFloats('C')).to.eql([0.00002]);
expect(decodeFloats(']')).to.eql([0.00015]);
expect(decodeFloats('^')).to.eql([-0.00016]);
expect(decodeFloats('@', 10)).to.eql([-0.1]);
expect(decodeFloats('A', 10)).to.eql([0.1]);
expect(decodeFloats('__@')).to.eql([16 * 32 / 1e5]);
expect(decodeFloats('___@')).to.eql([16 * 32 * 32 / 1e5]);
// from the "Encoded Polyline Algorithm Format" page at Google
expect(decodeFloats('`~oia@')).to.eql([-179.98321]);
});
});
describe('encodeSignedInteger', function() {
it('returns expected value', function() {
const encodeSignedIntegers = polyline.encodeSignedIntegers;
expect(encodeSignedIntegers([0])).to.eql('?');
expect(encodeSignedIntegers([-1])).to.eql('@');
expect(encodeSignedIntegers([1])).to.eql('A');
expect(encodeSignedIntegers([-2])).to.eql('B');
expect(encodeSignedIntegers([2])).to.eql('C');
expect(encodeSignedIntegers([15])).to.eql(']');
expect(encodeSignedIntegers([-16])).to.eql('^');
expect(encodeSignedIntegers([16])).to.eql('_@');
expect(encodeSignedIntegers([16 * 32])).to.eql('__@');
expect(encodeSignedIntegers([16 * 32 * 32])).to.eql('___@');
});
});
describe('decodeSignedInteger', function() {
it('returns expected value', function() {
const decodeSignedIntegers = polyline.decodeSignedIntegers;
expect(decodeSignedIntegers('?')).to.eql([0]);
expect(decodeSignedIntegers('@')).to.eql([-1]);
expect(decodeSignedIntegers('A')).to.eql([1]);
expect(decodeSignedIntegers('B')).to.eql([-2]);
expect(decodeSignedIntegers('C')).to.eql([2]);
expect(decodeSignedIntegers(']')).to.eql([15]);
expect(decodeSignedIntegers('^')).to.eql([-16]);
expect(decodeSignedIntegers('_@')).to.eql([16]);
expect(decodeSignedIntegers('__@')).to.eql([16 * 32]);
expect(decodeSignedIntegers('___@')).to.eql([16 * 32 * 32]);
});
});
describe('encodeUnsignedInteger', function() {
it('returns expected value', function() {
const encodeUnsignedInteger = polyline.encodeUnsignedInteger;
expect(encodeUnsignedInteger(0)).to.eql('?');
expect(encodeUnsignedInteger(1)).to.eql('@');
expect(encodeUnsignedInteger(2)).to.eql('A');
expect(encodeUnsignedInteger(30)).to.eql(']');
expect(encodeUnsignedInteger(31)).to.eql('^');
expect(encodeUnsignedInteger(32)).to.eql('_@');
expect(encodeUnsignedInteger(32 * 32)).to.eql('__@');
expect(encodeUnsignedInteger(5 * 32 * 32)).to.eql('__D');
expect(encodeUnsignedInteger(32 * 32 * 32)).to.eql('___@');
// from the "Encoded Polyline Algorithm Format" page at Google
expect(encodeUnsignedInteger(174)).to.eql('mD');
});
});
describe('decodeUnsignedInteger', function() {
it('returns expected value', function() {
const decodeUnsignedIntegers = polyline.decodeUnsignedIntegers;
expect(decodeUnsignedIntegers('?')).to.eql([0]);
expect(decodeUnsignedIntegers('@')).to.eql([1]);
expect(decodeUnsignedIntegers('A')).to.eql([2]);
expect(decodeUnsignedIntegers(']')).to.eql([30]);
expect(decodeUnsignedIntegers('^')).to.eql([31]);
expect(decodeUnsignedIntegers('_@')).to.eql([32]);
expect(decodeUnsignedIntegers('__@')).to.eql([32 * 32]);
expect(decodeUnsignedIntegers('__D')).to.eql([5 * 32 * 32]);
expect(decodeUnsignedIntegers('___@')).to.eql([32 * 32 * 32]);
// from the "Encoded Polyline Algorithm Format" page at Google
expect(decodeUnsignedIntegers('mD')).to.eql([174]);
});
});
describe('#readFeature', function() {
it('returns the expected feature', function() {
const feature = format.readFeature(encodedFlatPoints);
expect(feature).to.be.an(Feature);
const geometry = feature.getGeometry();
expect(geometry).to.be.an(LineString);
expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
});
it('transforms and returns the expected feature', function() {
const feature = format.readFeature(encodedFlatPoints, {
featureProjection: 'EPSG:3857'
});
expect(feature).to.be.an(Feature);
const geometry = feature.getGeometry();
expect(geometry).to.be.an(LineString);
expect(geometry.getCoordinates()).to.eql(points3857);
});
});
describe('#readFeatures', function() {
it('returns the expected feature', function() {
const features = format.readFeatures(encodedFlatPoints);
expect(features).to.be.an(Array);
expect(features).to.have.length(1);
const feature = features[0];
expect(feature).to.be.an(Feature);
const geometry = feature.getGeometry();
expect(geometry).to.be.an(LineString);
expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
});
it('transforms and returns the expected features', function() {
const features = format.readFeatures(encodedFlatPoints, {
featureProjection: 'EPSG:3857'
});
expect(features).to.be.an(Array);
expect(features).to.have.length(1);
const feature = features[0];
expect(feature).to.be.an(Feature);
const geometry = feature.getGeometry();
expect(geometry).to.be.an(LineString);
expect(geometry.getCoordinates()).to.eql(points3857);
});
});
describe('#readGeometry', function() {
it('returns the expected geometry', function() {
const geometry = format.readGeometry(encodedFlatPoints);
expect(geometry).to.be.an(LineString);
expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
});
it('parses XYZ linestring', function() {
const xyz = polyline.encodeDeltas([
38.500, -120.200, 100,
40.700, -120.950, 200,
43.252, -126.453, 20
], 3);
const format = new Polyline({
geometryLayout: 'XYZ'
});
const geometry = format.readGeometry(xyz);
expect(geometry.getLayout()).to.eql('XYZ');
expect(geometry.getCoordinates()).to.eql([
[-120.200, 38.500, 100],
[-120.950, 40.700, 200],
[-126.453, 43.252, 20]
]);
});
it('transforms and returns the expected geometry', function() {
const geometry = format.readGeometry(encodedFlatPoints, {
featureProjection: 'EPSG:3857'
});
expect(geometry).to.be.an(LineString);
expect(geometry.getCoordinates()).to.eql(points3857);
});
});
describe('#readProjection', function() {
it('returns the expected projection', function() {
const projection = format.readProjection(encodedFlatPoints);
expect(projection).to.be(getProjection('EPSG:4326'));
});
});
describe('#writeFeature', function() {
it('returns the expected text', function() {
const feature = new Feature(new LineString(points));
expect(format.writeFeature(feature)).to.be(encodedFlatPoints);
});
it('transforms and returns the expected text', function() {
const feature = new Feature(new LineString(points3857));
expect(format.writeFeature(feature, {
featureProjection: 'EPSG:3857'
})).to.be(encodedFlatPoints);
});
});
describe('#writeFeature', function() {
it('returns the expected text', function() {
const features = [new Feature(new LineString(points))];
expect(format.writeFeatures(features)).to.be(encodedFlatPoints);
});
it('transforms and returns the expected text', function() {
const features = [new Feature(new LineString(points3857))];
expect(format.writeFeatures(features, {
featureProjection: 'EPSG:3857'
})).to.be(encodedFlatPoints);
});
});
describe('#writeGeometry', function() {
it('returns the expected text', function() {
const geometry = new LineString(points);
expect(format.writeGeometry(geometry)).to.be(encodedFlatPoints);
});
it('transforms and returns the expected text', function() {
const geometry = new LineString(points3857);
expect(format.writeGeometry(geometry, {
featureProjection: 'EPSG:3857'
})).to.be(encodedFlatPoints);
});
});
});
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