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Versions: 4
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Contents
var vows = require("vows"),
load = require("../load"),
assert = require("../assert");
var suite = vows.describe("selection.size");
suite.addBatch({
"select(body)": {
topic: load("selection/size").document(),
"on a simple page": {
topic: function(d3) {
return d3.select("body");
},
"returns zero for empty selections": function(body) {
assert.equal(body.select("foo").size(), 0);
},
"returns one for a singleton selection": function(body) {
assert.equal(body.size(), 1);
},
"does not count null nodes": function(body) {
body[0][0] = null;
assert.equal(body.size(), 0);
}
}
}
});
suite.addBatch({
"selectAll(div)": {
topic: load("selection/size").document(),
"on a simple page": {
topic: function(d3) {
var body = d3.select("body");
body.append("div").append("span");
body.append("div");
return body.selectAll("div");
},
"returns null for empty selections": function(div) {
assert.equal(div.select("foo").size(), 0);
},
"returns the number of non-null nodes": function(div) {
assert.equal(div.size(), 2);
},
"does not count null nodes": function(div) {
div[0][0] = null;
assert.equal(div.size(), 1);
}
}
}
});
suite.export(module);
Version data entries
4 entries across 4 versions & 2 rubygems