Платформа ЦРНП "Мирокод" для разработки проектов
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276 lines
9.1 KiB
276 lines
9.1 KiB
describe("CRS.EPSG3857", function () { |
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var crs = L.CRS.EPSG3857; |
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describe("#latLngToPoint", function () { |
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it("projects a center point", function () { |
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expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(128, 128), 0.01); |
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}); |
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it("projects the northeast corner of the world", function () { |
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expect(crs.latLngToPoint(L.latLng(85.0511287798, 180), 0)).near(new L.Point(256, 0)); |
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}); |
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}); |
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describe("#pointToLatLng", function () { |
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it("reprojects a center point", function () { |
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expect(crs.pointToLatLng(new L.Point(128, 128), 0)).nearLatLng(L.latLng(0, 0), 0.01); |
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}); |
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it("reprojects the northeast corner of the world", function () { |
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expect(crs.pointToLatLng(new L.Point(256, 0), 0)).nearLatLng(L.latLng(85.0511287798, 180)); |
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}); |
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}); |
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describe("project", function () { |
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it('projects geo coords into meter coords correctly', function () { |
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expect(crs.project(new L.LatLng(50, 30))).near(new L.Point(3339584.7238, 6446275.84102)); |
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expect(crs.project(new L.LatLng(85.0511287798, 180))).near(new L.Point(20037508.34279, 20037508.34278)); |
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expect(crs.project(new L.LatLng(-85.0511287798, -180))).near(new L.Point(-20037508.34279, -20037508.34278)); |
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}); |
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}); |
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describe("unproject", function () { |
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it('unprojects meter coords into geo coords correctly', function () { |
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expect(crs.unproject(new L.Point(3339584.7238, 6446275.84102))).nearLatLng(new L.LatLng(50, 30)); |
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expect(crs.unproject(new L.Point(20037508.34279, 20037508.34278))).nearLatLng(new L.LatLng(85.051129, 180)); |
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expect(crs.unproject(new L.Point(-20037508.34279, -20037508.34278))).nearLatLng(new L.LatLng(-85.051129, -180)); |
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}); |
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}); |
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describe("#getProjectedBounds", function () { |
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it("gives correct size", function () { |
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var i, |
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worldSize = 256, |
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crsSize; |
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for (i = 0; i <= 22; i++) { |
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crsSize = crs.getProjectedBounds(i).getSize(); |
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expect(crsSize.x).equal(worldSize); |
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expect(crsSize.y).equal(worldSize); |
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worldSize *= 2; |
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} |
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}); |
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}); |
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describe('#wrapLatLng', function () { |
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it("wraps longitude to lie between -180 and 180 by default", function () { |
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expect(crs.wrapLatLng(new L.LatLng(0, 190)).lng).to.eql(-170); |
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expect(crs.wrapLatLng(new L.LatLng(0, 360)).lng).to.eql(0); |
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expect(crs.wrapLatLng(new L.LatLng(0, 380)).lng).to.eql(20); |
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expect(crs.wrapLatLng(new L.LatLng(0, -190)).lng).to.eql(170); |
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expect(crs.wrapLatLng(new L.LatLng(0, -360)).lng).to.eql(0); |
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expect(crs.wrapLatLng(new L.LatLng(0, -380)).lng).to.eql(-20); |
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expect(crs.wrapLatLng(new L.LatLng(0, 90)).lng).to.eql(90); |
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expect(crs.wrapLatLng(new L.LatLng(0, 180)).lng).to.eql(180); |
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}); |
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it("does not drop altitude", function () { |
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expect(crs.wrapLatLng(new L.LatLng(0, 190, 1234)).lng).to.eql(-170); |
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expect(crs.wrapLatLng(new L.LatLng(0, 190, 1234)).alt).to.eql(1234); |
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expect(crs.wrapLatLng(new L.LatLng(0, 380, 1234)).lng).to.eql(20); |
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expect(crs.wrapLatLng(new L.LatLng(0, 380, 1234)).alt).to.eql(1234); |
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}); |
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}); |
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describe('#wrapLatLngBounds', function () { |
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it("does not wrap bounds between -180 and 180 longitude", function () { |
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var bounds1 = L.latLngBounds([-10, -10], [10, 10]); |
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var bounds2 = L.latLngBounds([-80, -180], [-70, -170]); |
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var bounds3 = L.latLngBounds([70, 170], [80, 180]); |
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bounds1 = crs.wrapLatLngBounds(bounds1); |
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bounds2 = crs.wrapLatLngBounds(bounds2); |
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bounds3 = crs.wrapLatLngBounds(bounds3); |
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expect(bounds1.getSouth()).to.eql(-10); |
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expect(bounds1.getWest()).to.eql(-10); |
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expect(bounds1.getNorth()).to.eql(10); |
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expect(bounds1.getEast()).to.eql(10); |
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expect(bounds2.getSouth()).to.eql(-80); |
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expect(bounds2.getWest()).to.eql(-180); |
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expect(bounds2.getNorth()).to.eql(-70); |
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expect(bounds2.getEast()).to.eql(-170); |
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expect(bounds3.getSouth()).to.eql(70); |
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expect(bounds3.getWest()).to.eql(170); |
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expect(bounds3.getNorth()).to.eql(80); |
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expect(bounds3.getEast()).to.eql(180); |
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}); |
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it("wraps bounds when center longitude is less than -180", function () { |
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var bounds1 = L.latLngBounds([0, -185], [10, -170]); |
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var bounds2 = L.latLngBounds([0, -190], [10, -175]); |
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bounds1 = crs.wrapLatLngBounds(bounds1); |
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bounds2 = crs.wrapLatLngBounds(bounds2); |
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expect(bounds1.getSouth()).to.eql(0); |
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expect(bounds1.getWest()).to.eql(-185); |
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expect(bounds1.getNorth()).to.eql(10); |
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expect(bounds1.getEast()).to.eql(-170); |
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expect(bounds2.getSouth()).to.eql(0); |
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expect(bounds2.getWest()).to.eql(170); |
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expect(bounds2.getNorth()).to.eql(10); |
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expect(bounds2.getEast()).to.eql(185); |
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}); |
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it("wraps bounds when center longitude is larger than +180", function () { |
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var bounds1 = L.latLngBounds([0, 185], [10, 170]); |
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var bounds2 = L.latLngBounds([0, 190], [10, 175]); |
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bounds1 = crs.wrapLatLngBounds(bounds1); |
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bounds2 = crs.wrapLatLngBounds(bounds2); |
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expect(bounds1.getSouth()).to.eql(0); |
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expect(bounds1.getWest()).to.eql(170); |
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expect(bounds1.getNorth()).to.eql(10); |
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expect(bounds1.getEast()).to.eql(185); |
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expect(bounds2.getSouth()).to.eql(0); |
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expect(bounds2.getWest()).to.eql(-185); |
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expect(bounds2.getNorth()).to.eql(10); |
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expect(bounds2.getEast()).to.eql(-170); |
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}); |
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}); |
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}); |
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describe("CRS.EPSG4326", function () { |
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var crs = L.CRS.EPSG4326; |
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describe("#getSize", function () { |
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it("gives correct size", function () { |
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var i, |
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worldSize = 256, |
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crsSize; |
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for (i = 0; i <= 22; i++) { |
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crsSize = crs.getProjectedBounds(i).getSize(); |
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expect(crsSize.x).equal(worldSize * 2); |
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// Lat bounds are half as high (-90/+90 compared to -180/+180) |
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expect(crsSize.y).equal(worldSize); |
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worldSize *= 2; |
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} |
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}); |
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}); |
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}); |
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describe("CRS.EPSG3395", function () { |
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var crs = L.CRS.EPSG3395; |
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describe("#latLngToPoint", function () { |
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it("projects a center point", function () { |
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expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(128, 128), 0.01); |
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}); |
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it("projects the northeast corner of the world", function () { |
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expect(crs.latLngToPoint(L.latLng(85.0840591556, 180), 0)).near(new L.Point(256, 0)); |
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}); |
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}); |
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describe("#pointToLatLng", function () { |
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it("reprojects a center point", function () { |
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expect(crs.pointToLatLng(new L.Point(128, 128), 0)).nearLatLng(L.latLng(0, 0), 0.01); |
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}); |
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it("reprojects the northeast corner of the world", function () { |
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expect(crs.pointToLatLng(new L.Point(256, 0), 0)).nearLatLng(L.latLng(85.0840591556, 180)); |
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}); |
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}); |
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}); |
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describe("CRS.Simple", function () { |
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var crs = L.CRS.Simple; |
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describe("#latLngToPoint", function () { |
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it("converts LatLng coords to pixels", function () { |
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expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(0, 0)); |
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expect(crs.latLngToPoint(L.latLng(700, 300), 0)).near(new L.Point(300, -700)); |
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expect(crs.latLngToPoint(L.latLng(-200, 1000), 1)).near(new L.Point(2000, 400)); |
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}); |
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}); |
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describe("#pointToLatLng", function () { |
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it("converts pixels to LatLng coords", function () { |
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expect(crs.pointToLatLng(L.point(0, 0), 0)).nearLatLng(new L.LatLng(0, 0)); |
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expect(crs.pointToLatLng(L.point(300, -700), 0)).nearLatLng(new L.LatLng(700, 300)); |
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expect(crs.pointToLatLng(L.point(2000, 400), 1)).nearLatLng(new L.LatLng(-200, 1000)); |
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}); |
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}); |
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describe("getProjectedBounds", function () { |
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it("returns nothing", function () { |
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expect(crs.getProjectedBounds(5)).to.be(null); |
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}); |
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}); |
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describe("wrapLatLng", function () { |
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it("returns coords as is", function () { |
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expect(crs.wrapLatLng(new L.LatLng(270, 400)).equals(new L.LatLng(270, 400))).to.be(true); |
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}); |
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it("wraps coords if configured", function () { |
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var crs = L.extend({}, L.CRS.Simple, { |
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wrapLng: [-200, 200], |
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wrapLat: [-200, 200] |
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}); |
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expect(crs.wrapLatLng(new L.LatLng(300, -250))).nearLatLng(new L.LatLng(-100, 150)); |
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}); |
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}); |
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}); |
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describe("CRS", function () { |
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var crs = L.CRS; |
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describe("#zoom && #scale", function () { |
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it("convert zoom to scale and viceversa and return the same values", function () { |
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var zoom = 2.5; |
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var scale = crs.scale(zoom); |
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expect(crs.zoom(scale)).to.eql(zoom); |
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}); |
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}); |
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}); |
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describe("CRS.ZoomNotPowerOfTwo", function () { |
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var crs = L.extend({}, L.CRS, { |
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scale: function (zoom) { |
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return 256 * Math.pow(1.5, zoom); |
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}, |
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zoom: function (scale) { |
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return Math.log(scale / 256) / Math.log(1.5); |
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} |
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}); |
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describe("#scale", function () { |
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it("of zoom levels are related by a power of 1.5", function () { |
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var zoom = 5; |
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var scale = crs.scale(zoom); |
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expect(crs.scale(zoom + 1)).to.eql(1.5 * scale); |
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expect(crs.zoom(1.5 * scale)).to.eql(zoom + 1); |
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}); |
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}); |
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describe("#zoom && #scale", function () { |
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it("convert zoom to scale and viceversa and return the same values", function () { |
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var zoom = 2; |
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var scale = crs.scale(zoom); |
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expect(crs.zoom(scale)).to.eql(zoom); |
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}); |
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}); |
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}); |
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describe("CRS.Earth", function () { |
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describe("#distance", function () { |
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// Test values from http://rosettacode.org/wiki/Haversine_formula, |
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// we assume using mean earth radius (https://en.wikipedia.org/wiki/Earth_radius#Mean_radius) |
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// is correct, since that's what International Union of Geodesy and Geophysics recommends, |
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// and that sounds serious. |
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var p1 = L.latLng(36.12, -86.67); |
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var p2 = L.latLng(33.94, -118.40); |
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expect(L.CRS.Earth.distance(p1, p2)).to.be.within(2886444.43, 2886444.45); |
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}); |
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});
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