36 строки
1015 B
JavaScript
36 строки
1015 B
JavaScript
var vows = require("vows"),
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load = require("../load"),
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assert = require("../assert");
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var suite = vows.describe("d3.geo.greatArc");
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suite.addBatch({
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"greatArc": {
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topic: load("geo/greatArc").expression("d3.geo.greatArc"),
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"distance": function(arc) {
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var a = arc();
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assert.equal(a.distance({source: [0, 0], target: [0, 0]}), 0);
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assert.inDelta(a.distance({
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source: [118 + 24 / 60, 33 + 57 / 60],
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target: [ 73 + 47 / 60, 40 + 38 / 60]
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}), 3973 / 6371, .5);
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},
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"source and target can be set as constants": function(arc) {
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var a = arc().source([5, 52]).target([-120, 37]);
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assert.inDelta(a().coordinates, [
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[ 5, 52 ],
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[-120, 37 ]
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], .5);
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},
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"geodesic": function(arc) {
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var a = arc();
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assert.inDelta(a({source: [5, 52], target: [-120, 37]}).coordinates, [
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[ 5, 52 ],
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[-120, 37 ]
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], .5);
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}
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}
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});
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suite.export(module);
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