106 строки
3.8 KiB
JavaScript
106 строки
3.8 KiB
JavaScript
require("../env");
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require("../../d3");
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var vows = require("vows"),
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assert = require("assert");
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var suite = vows.describe("selection.select");
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suite.addBatch({
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"select(body)": {
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topic: function() {
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var body = d3.select("body").html("");
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body.append("div").attr("class", "first");
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body.append("div").attr("class", "second");
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return body;
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},
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"selects the first matching element": function(body) {
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var div = body.select("div");
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assert.isTrue(div[0][0] === document.body.firstChild);
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assert.equal(div.length, 1);
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assert.equal(div[0].length, 1);
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assert.equal(div.attr("class"), "first");
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},
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"propagates parent node to the selected elements": function(body) {
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var div = body.select("div");
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assert.isNotNull(div[0].parentNode);
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assert.isTrue(div[0].parentNode === document.documentElement);
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assert.isTrue(div[0].parentNode === body[0].parentNode);
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},
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"propagates data to the selected elements": function(body) {
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var data = new Object(), div = body.data([data]).select("div");
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assert.strictEqual(div[0][0].__data__, data);
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},
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"does not propagate data if no data was specified": function(body) {
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delete document.body.__data__;
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var data = new Object(), div = body.select("div").data([data]);
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div = body.select("div");
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assert.strictEqual(div[0][0].__data__, data);
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assert.isUndefined(document.body.__data__);
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},
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"returns null if no match is found": function(body) {
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var span = body.select("span");
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assert.equal(span[0][0], null);
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assert.equal(span.length, 1);
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assert.equal(span[0].length, 1);
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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: function() {
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var div = d3.select("body").html("").selectAll("div").data(d3.range(2)).enter().append("div");
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div.append("span").attr("class", "first");
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div.append("span").attr("class", "second");
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return div;
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},
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"selects the first matching element": function(div) {
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var span = div.select("span");
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assert.isTrue(span[0][0].parentNode === div[0][0]);
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assert.isTrue(span[0][1].parentNode === div[0][1]);
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assert.equal(span.length, 1);
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assert.equal(span[0].length, 2);
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assert.equal(span.attr("class"), "first");
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},
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"propagates parent node to the selected elements": function(div) {
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var span = div.select("span");
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assert.isNotNull(span[0].parentNode);
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assert.isTrue(span[0].parentNode === document.body);
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assert.isTrue(span[0].parentNode === div[0].parentNode);
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},
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"propagates data to the selected elements": function(div) {
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var data = new Object(), span = div.data([data]).select("span");
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assert.strictEqual(span[0][0].__data__, data);
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},
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"does not propagate data if no data was specified": function(div) {
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delete div[0][0].__data__;
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delete div[0][1].__data__;
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var a = new Object(), b = new Object(), span = div.select("span").data([a, b]);
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span = div.select("span");
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assert.strictEqual(span[0][0].__data__, a);
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assert.strictEqual(span[0][1].__data__, b);
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assert.isUndefined(div[0][0].__data__);
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assert.isUndefined(div[0][1].__data__);
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},
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"returns null if no match is found": function(div) {
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var div = div.select("div");
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assert.equal(div[0][0], null);
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assert.equal(div[0][1], null);
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assert.equal(div.length, 1);
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assert.equal(div[0].length, 2);
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},
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"ignores null nodes": function(div) {
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var some = d3.selectAll("div");
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some[0][1] = null;
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var span = some.select("span");
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assert.equal(span.length, 1);
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assert.equal(span[0].length, 2);
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assert.isTrue(span[0][0].parentNode === div[0][0]);
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assert.isNull(span[0][1]);
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}
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}
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});
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suite.export(module);
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