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| const _ = require('lodash');
const { expect } = require('../utils');
const geoJsonFixtures = require('./geojson');
describe('GeoJSON fixtures', () => {
describe('coordinates', () => {
const generateCoordinates = geoJsonFixtures.coordinates;
it('should generate random coordinates', () => {
const unique = [];
_.times(100, () => {
const coordinates = generateCoordinates();
expect(coordinates).to.be.an('array');
expect(coordinates).to.have.lengthOf(2);
expect(coordinates[0]).to.be.a('number');
expect(coordinates[0]).to.be.at.least(-180);
expect(coordinates[0]).to.be.at.most(180);
expect(coordinates[1]).to.be.a('number');
expect(coordinates[1]).to.be.at.least(-90);
expect(coordinates[1]).to.be.at.most(90);
const fingerprint = coordinates.join(',');
Eif (unique.indexOf(fingerprint) < 0) {
unique.push(fingerprint);
}
});
// Check that at least 90% of the coordinates are different
// (we can't be 100% sure that they all will be).
expect(unique).to.have.lengthOf.at.least(90);
});
describe('with the "bbox" option', () => {
it('should generate random coordinates within a bounding box', () => {
const bbox = {
southWest: [ 10, 20 ],
northEast: [ 20, 30 ]
};
const unique = [];
_.times(100, () => {
const coordinates = generateCoordinates({ bbox: bbox });
expect(coordinates).to.be.an('array');
expect(coordinates).to.have.lengthOf(2);
expect(coordinates[0]).to.be.a('number');
expect(coordinates[0]).to.be.at.least(10);
expect(coordinates[0]).to.be.at.most(20);
expect(coordinates[1]).to.be.a('number');
expect(coordinates[1]).to.be.at.least(20);
expect(coordinates[1]).to.be.at.most(30);
const fingerprint = coordinates.join(',');
Eif (unique.indexOf(fingerprint) < 0) {
unique.push(fingerprint);
}
});
// Check that at least 90% of the coordinates are different
// (we can't be 100% sure that they all will be).
expect(unique).to.have.lengthOf.at.least(90);
});
it('should not accept an invalid bounding box', () => {
expect(() => generateCoordinates({ bbox: 666 })).to.throw('Bounding box must be an object');
});
it('should not accept a bounding box with a missing corner', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 20 ] } })).to.throw('Bounding box must have a "northEast" property');
expect(() => generateCoordinates({ bbox: { northEast: [ 20, 30 ] } })).to.throw('Bounding box must have a "southWest" property');
});
it('should not accept missing coordinates', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 20 ], northEast: true } })).to.throw('Coordinates must be an array, got boolean');
});
it('should not accept the wrong number of coordinates', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 20, 30 ], northEast: [ 20, 30 ] } })).to.throw('Coordinates must be an array with 2 elements, but it has length 3');
});
it('should not accept coordinates that are not numbers', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 'asd', 20 ], northEast: [ 20, 30 ] } })).to.throw('Coordinates must contain only numbers, got string');
});
it('should not accept a longitude that is out of bounds', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 1000, 20 ], northEast: [ 20, 30 ] } })).to.throw('Longitude must be between -180 and 180, got 1000');
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 20 ], northEast: [ -200, 30 ] } })).to.throw('Longitude must be between -180 and 180, got -200');
});
it('should not accept a latitude that is out of bounds', () => {
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 200 ], northEast: [ 20, 30 ] } })).to.throw('Latitude must be between -90 and 90, got 200');
expect(() => generateCoordinates({ bbox: { southWest: [ 10, 20 ], northEast: [ 20, -90.5 ] } })).to.throw('Latitude must be between -90 and 90, got -90.5');
});
})
});
});
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