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var tape = require('tape'),
d3WeightedVoronoi = require('../build/d3-weighted-voronoi');
tape('weightedVoronoi(...) should set the expected defaults', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
datum = { x: 1, y: 2, weight: 3 };
test.equal(weightedVoronoi.x()(datum), 1);
test.equal(weightedVoronoi.y()(datum), 2);
test.equal(weightedVoronoi.weight()(datum), 3);
test.deepEqual(weightedVoronoi.clip(), [
[0, 0],
[0, 1],
[1, 1],
[1, 0],
]);
test.deepEqual(weightedVoronoi.extent(), [
[0, 0],
[1, 1],
]);
test.deepEqual(weightedVoronoi.size(), [1, 1]);
test.end();
});
tape('weightedVoronoi.x(...) should set the specified x-accessor', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
datum = { xPrime: 1, y: 2, weight: 3 };
test.equal(
weightedVoronoi.x(function (d) {
return d.xPrime;
}),
weightedVoronoi
);
test.equal(weightedVoronoi.x()(datum), 1);
test.end();
});
tape('weightedVoronoi.y(...) should set the specified y-accessor', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
datum = { x: 1, yPrime: 2, weight: 3 };
test.equal(
weightedVoronoi.y(function (d) {
return d.yPrime;
}),
weightedVoronoi
);
test.equal(weightedVoronoi.y()(datum), 2);
test.end();
});
tape('weightedVoronoi.weight(...) should set the specified weight-accessor', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
datum = { xPrime: 1, y: 2, weightPrime: 3 };
test.equal(
weightedVoronoi.weight(function (d) {
return d.weightPrime;
}),
weightedVoronoi
);
test.equal(weightedVoronoi.weight()(datum), 3);
test.end();
});
tape('weightedVoronoi.clip(...)', function (test) {
test.test('weightedVoronoi.clip(...) should set adequate clipping polygon, extent and size', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
newClip = [
[1, 0],
[0, 1],
[1, 2],
[2, 1],
]; // diamond
test.equal(weightedVoronoi.clip(newClip), weightedVoronoi);
test.deepEqual(weightedVoronoi.clip(), [
[1, 0],
[0, 1],
[1, 2],
[2, 1],
]);
test.deepEqual(weightedVoronoi.extent(), [
[0, 0],
[2, 2],
]);
test.deepEqual(weightedVoronoi.size(), [2, 2]);
test.end();
});
test.test(
'weightedVoronoi.clip(...) should set the adequate _counterclockwise_ clipping polygon, extent and size',
function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
newClip = [
[1, 0],
[2, 1],
[1, 2],
[0, 1],
]; // clockwise diamond
test.equal(weightedVoronoi.clip(newClip), weightedVoronoi);
test.deepEqual(weightedVoronoi.clip(), [
[0, 1],
[1, 2],
[2, 1],
[1, 0],
]);
test.deepEqual(weightedVoronoi.extent(), [
[0, 0],
[2, 2],
]);
test.deepEqual(weightedVoronoi.size(), [2, 2]);
test.end();
}
);
test.test(
'weightedVoronoi.clip(...) should set the adequate _convex_, _hole-free_, _counterclockwise_ clipping polygon, extent and size',
function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
newClip = [
[0, 0],
[1, 1],
[1, 0],
[0, 1],
]; // self-intersecting polygon
test.equal(weightedVoronoi.clip(newClip), weightedVoronoi);
test.deepEqual(weightedVoronoi.clip(), [
[1, 1],
[1, 0],
[0, 0],
[0, 1],
]);
test.deepEqual(weightedVoronoi.extent(), [
[0, 0],
[1, 1],
]);
test.deepEqual(weightedVoronoi.size(), [1, 1]);
test.end();
}
);
});
tape('weightedVoronoi.extent(...) should set adequate extent, clipping polygon and size', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
newExtent = [
[1, 1],
[3, 3],
];
test.equal(weightedVoronoi.extent(newExtent), weightedVoronoi);
test.deepEqual(weightedVoronoi.clip(), [
[1, 1],
[1, 3],
[3, 3],
[3, 1],
]);
test.deepEqual(weightedVoronoi.extent(), [
[1, 1],
[3, 3],
]);
test.deepEqual(weightedVoronoi.size(), [2, 2]);
test.end();
});
tape('weightedVoronoi.size(...) should set adequate size, clipping polygon and extent', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
newSize = [2, 3];
test.equal(weightedVoronoi.size(newSize), weightedVoronoi);
test.deepEqual(weightedVoronoi.clip(), [
[0, 0],
[0, 3],
[2, 3],
[2, 0],
]);
test.deepEqual(weightedVoronoi.extent(), [
[0, 0],
[2, 3],
]);
test.deepEqual(weightedVoronoi.size(), [2, 3]);
test.end();
});
tape('weightedVoronoi.(...) should compute weighted voronoi diagram', function (test) {
test.test('basic use case', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
data = [
{ x: 0.25, y: 0.5, weight: 0 },
{ x: 0.75, y: 0.5, weight: 0.25 },
],
cells = weightedVoronoi(data);
test.equal(cells.length, 2);
test.end();
});
test.test('on same sites, highest weight should overweight others sites', function (test) {
var weightedVoronoi = d3WeightedVoronoi.weightedVoronoi(),
s0 = { x: 0.5, y: 0.5, weight: 0.5 },
s1 = { x: 0.5, y: 0.5, weight: 2 },
s2 = { x: 0.5, y: 0.5, weight: 1 };
(data = [s0, s1]), (cells = weightedVoronoi(data));
test.equal(cells.length, 1);
test.equal(cells[0].site.originalObject, s1);
test.end();
});
});
tape.test('Package should provide d3WeightedVoronoiError', function (test) {
test.ok(d3WeightedVoronoi.d3WeightedVoronoiError);
test.ok(new d3WeightedVoronoi.d3WeightedVoronoiError('test') instanceof Error);
test.end();
});