39 строки
1.3 KiB
JavaScript
39 строки
1.3 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("d3.selection");
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suite.addBatch({
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"selection": {
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topic: load("selection/selection").document(),
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"selects the document element": function(d3) {
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var selection = d3.selection();
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assert.equal(selection.length, 1);
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assert.equal(selection[0].length, 1);
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assert.equal(selection[0][0].nodeType, 1);
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assert.equal(selection[0][0].tagName, "HTML");
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},
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"the parentNode is also the document element": function(d3) {
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var parentNode = d3.selection()[0].parentNode;
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assert.equal(parentNode.nodeType, 1);
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assert.equal(parentNode.tagName, "HTML");
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},
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"is an instanceof d3.selection": function(d3) {
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assert.instanceOf(d3.selection(), d3.selection);
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},
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"subselections are also instanceof d3.selection": function(d3) {
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assert.instanceOf(d3.selection().select("body"), d3.selection);
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assert.instanceOf(d3.selection().selectAll("body"), d3.selection);
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},
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"selection prototype can be extended": function(d3) {
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d3.selection.prototype.foo = function(v) { return this.attr("foo", v); };
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var body = d3.selection().select("body").foo(42);
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assert.equal(body.attr("foo"), "42");
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delete d3.selection.prototype.foo;
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}
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}
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});
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suite.export(module);
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