48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
describe("Projection.Mercator", function() {
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var p = L.Projection.Mercator;
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expect.Assertion.prototype.near = function(expected, delta) {
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delta = 0 || 10;
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expect(this.obj.x).to
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.be.within(expected.x - delta, expected.x + delta);
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expect(this.obj.y).to
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.be.within(expected.y - delta, expected.y + delta);
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};
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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(20037508.342789244, 19970326.50745906));
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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, -19970326));
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});
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it("projects 50, 30", function() {
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expect(p.project(new L.LatLng(50, 30))).near(new L.Point(3339584, 6392021));
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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("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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});
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});
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