56 строки
1.5 KiB
JavaScript
56 строки
1.5 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.node");
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suite.addBatch({
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"select(body)": {
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topic: load("selection/node").document(),
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"on a simple page": {
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topic: function(d3) {
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return d3.select("body");
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},
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"returns null for empty selections": function(body) {
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assert.isNull(body.select("foo").node());
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},
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"returns the first element for non-empty selections": function(body) {
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assert.isTrue(body.node() === body[0][0]);
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assert.equal(body.node().tagName, "BODY");
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},
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"ignores null nodes": 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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}
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});
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suite.addBatch({
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"selectAll(div)": {
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topic: load("selection/node").document(),
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"on a simple page": {
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topic: function(d3) {
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var body = d3.select("body");
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body.append("div").append("span");
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body.append("div");
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return body.selectAll("div");
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},
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"returns null for empty selections": function(div) {
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assert.isNull(div.select("foo").node());
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},
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"returns the first element for non-empty selections": function(div) {
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assert.isTrue(div.node() === div[0][0]);
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assert.equal(div.node().tagName, "DIV");
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},
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"ignores null nodes": function(div) {
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div[0][0] = null;
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assert.isTrue(div.node() === div[0][1]);
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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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});
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suite.export(module);
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