40 строки
1.2 KiB
JavaScript
40 строки
1.2 KiB
JavaScript
var assert = require("../assert");
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module.exports = {
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"with a single element selected": {
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topic: function(d3) {
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return d3.select("body").transition();
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},
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"returns null for empty subselections": function(body) {
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assert.isNull(body.select("foo").node());
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},
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"returns the selected element": function(body) {
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assert.equal(body.node().tagName, "BODY");
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},
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"returns null if no elements are slected": function(body) {
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body[0][0] = null;
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assert.isNull(body.node());
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}
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},
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"with multiple elements selected": {
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topic: function(d3) {
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var body = d3.select("body").html(null);
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body.append("div").attr("class", "first").append("span");
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body.append("div").attr("class", "second");
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return body.selectAll("div").transition();
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},
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"returns null for empty subselections": function(div) {
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assert.isNull(div.select("foo").node());
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},
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"returns the first selected element": function(div) {
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assert.equal(div.node().className, "first");
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assert.equal(div.node().tagName, "DIV");
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},
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"does not count null nodes": function(div) {
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div[0][0] = null;
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assert.equal(div.node().className, "second");
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assert.equal(div.node().tagName, "DIV");
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}
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}
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};
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