49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
describe("Projection.Mercator", function() {
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var p = L.Projection.Mercator;
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describe("#project", function() {
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it("projects a center point", function() {
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//edge cases
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expect(p.project(new L.LatLng(0, 0))).near(new L.Point(0, 0));
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});
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it("projects the northeast corner of the world", function() {
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expect(p.project(new L.LatLng(90, 180))).near(new L.Point(20037508, 20037508));
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});
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it("projects the southwest corner of the world", function() {
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expect(p.project(new L.LatLng(-90, -180))).near(new L.Point(-20037508, -20037508));
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});
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it("projects other points", function() {
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expect(p.project(new L.LatLng(50, 30))).near(new L.Point(3339584, 6413524));
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// from https://github.com/Leaflet/Leaflet/issues/1578
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expect(p.project(new L.LatLng(51.9371170300465, 80.11230468750001)))
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.near(new L.Point(8918060.964088084, 6755099.410887127));
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});
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});
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describe("#unproject", function() {
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function pr(point) {
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return p.project(p.unproject(point));
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}
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it("unprojects a center point", function() {
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expect(pr(new L.Point(0, 0))).near(new L.Point(0, 0));
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});
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it("unprojects pi points", function() {
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expect(pr(new L.Point(-Math.PI, Math.PI))).near(new L.Point(-Math.PI, Math.PI));
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expect(pr(new L.Point(-Math.PI, -Math.PI))).near(new L.Point(-Math.PI, -Math.PI));
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expect(pr(new L.Point(0.523598775598, 1.010683188683))).near(new L.Point(0.523598775598, 1.010683188683));
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});
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it('unprojects other points', function () {
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// from https://github.com/Leaflet/Leaflet/issues/1578
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expect(pr(new L.Point(8918060.964088084, 6755099.410887127)));
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});
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});
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});
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