82 строки
3.3 KiB
JavaScript
82 строки
3.3 KiB
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("selection.sort");
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suite.addBatch({
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"selectAll(div).selectAll(span)": {
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topic: load("selection/sort").document(),
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"on a page with some spans": {
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topic: function(d3) {
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return d3.select("body").append("div").selectAll("div")
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.data([1, 2, 10, 20])
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.enter().append("div")
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.selectAll("span")
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.data(function(d) { return [20 + d, 2 + d, 10, 1]; })
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.enter().append("span");
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},
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"sorts elements by natural order": function(span) {
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span.sort();
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assert.domNull(span[0][0].previousSibling);
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assert.domEqual(span[0][1].previousSibling, span[0][0]);
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assert.domEqual(span[0][2].previousSibling, span[0][1]);
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assert.domEqual(span[0][3].previousSibling, span[0][2]);
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assert.domNull(span[0][3].nextSibling);
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},
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"sorts each group independently": function(span) {
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span.sort(function(a, b) { return b - a; });
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assert.deepEqual(span[0].map(data), [21, 10, 3, 1]);
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assert.deepEqual(span[1].map(data), [22, 10, 4, 1]);
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assert.deepEqual(span[2].map(data), [30, 12, 10, 1]);
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assert.deepEqual(span[3].map(data), [40, 22, 10, 1]);
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},
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"sorts using the specified comparator": function(span) {
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span.sort(function(a, b) { return (a + "").localeCompare(b + ""); });
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assert.deepEqual(span[0].map(data), [1, 10, 21, 3]);
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assert.deepEqual(span[1].map(data), [1, 10, 22, 4]);
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assert.deepEqual(span[2].map(data), [1, 10, 12, 30]);
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assert.deepEqual(span[3].map(data), [1, 10, 22, 40]);
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},
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"returns the current selection": function(span) {
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assert.isTrue(span.sort() === span);
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},
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"sorts null nodes at the end of the selection": function(span) {
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var nulls = 0;
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span[0][0].parentNode.removeChild(span[0][0]);
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span[0][0] = null;
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span.sort(function(a, b) { if ((a === null) || (b === null)) ++nulls; return a - b; });
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assert.equal(nulls, 0);
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assert.isNull(span[0][3]);
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assert.domNull(span[0][0].previousSibling);
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assert.domEqual(span[0][1], span[0][0].nextSibling);
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assert.domEqual(span[0][0], span[0][1].previousSibling);
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assert.domEqual(span[0][2], span[0][1].nextSibling);
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assert.domEqual(span[0][1], span[0][2].previousSibling);
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assert.domNull(span[0][2].nextSibling);
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assert.deepEqual(span[0].slice(0, -1).map(data), [3, 10, 21]);
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for (var i = 1; i < 4; ++i) {
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var d = span[i].parentNode.__data__;
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assert.domNull(span[i][0].previousSibling);
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assert.domEqual(span[i][1], span[i][0].nextSibling);
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assert.domEqual(span[i][0], span[i][1].previousSibling);
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assert.domEqual(span[i][2], span[i][1].nextSibling);
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assert.domEqual(span[i][1], span[i][2].previousSibling);
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assert.domEqual(span[i][3], span[i][2].nextSibling);
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assert.domEqual(span[i][2], span[i][3].previousSibling);
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assert.domNull(span[i][3].nextSibling);
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assert.deepEqual(span[i].map(data), [1, 2 + d, 10, 20 + d].sort(function(a, b) { return a - b; }));
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}
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}
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}
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}
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});
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function data(d) {
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return d.__data__;
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}
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suite.export(module);
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