diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/test/core/selection-attr-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/test/core/selection-attr-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,153 @@
+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("selection.attr");
+
+suite.addBatch({
+  "select(body)": {
+    topic: function() {
+      return d3.select("body");
+    },
+    "sets an attribute as a string": function(body) {
+      body.attr("bgcolor", "red");
+      assert.equal(document.body.getAttribute("bgcolor"), "red");
+    },
+    "sets an attribute as a number": function(body) {
+      body.attr("opacity", 1);
+      assert.equal(document.body.getAttribute("opacity"), "1");
+    },
+    "sets an attribute as a function": function(body) {
+      body.attr("bgcolor", function() { return "orange"; });
+      assert.equal(document.body.getAttribute("bgcolor"), "orange");
+    },
+    "sets an attribute as a function of data": function(body) {
+      body.data(["cyan"]).attr("bgcolor", String);
+      assert.equal(document.body.getAttribute("bgcolor"), "cyan");
+    },
+    "sets an attribute as a function of index": function(body) {
+      body.attr("bgcolor", function(d, i) { return "orange-" + i; });
+      assert.equal(document.body.getAttribute("bgcolor"), "orange-0");
+    },
+    "sets a namespaced attribute as a string": function(body) {
+      body.attr("xlink:href", "url");
+      assert.equal(document.body.getAttributeNS("http://www.w3.org/1999/xlink", "href"), "url");
+    },
+    "sets a namespaced attribute as a function": function(body) {
+      body.data(["orange"]).attr("xlink:href", function(d, i) { return d + "-" + i; });
+      assert.equal(document.body.getAttributeNS("http://www.w3.org/1999/xlink", "href"), "orange-0");
+    },
+    "gets an attribute value": function(body) {
+      document.body.setAttribute("bgcolor", "yellow");
+      assert.equal(body.attr("bgcolor"), "yellow");
+    },
+    "gets a namespaced attribute value": function(body) {
+      document.body.setAttributeNS("http://www.w3.org/1999/xlink", "foo", "bar");
+      assert.equal(body.attr("xlink:foo"), "bar");
+    },
+    "removes an attribute as null": function(body) {
+      body.attr("bgcolor", "red").attr("bgcolor", null);
+      assert.equal(body.attr("bgcolor"), "");
+    },
+    "removes an attribute as a function": function(body) {
+      body.attr("bgcolor", "red").attr("bgcolor", function() { return null; });
+      assert.equal(body.attr("bgcolor"), "");
+    },
+    "removes a namespaced attribute as null": function(body) {
+      body.attr("xlink:href", "url").attr("xlink:href", null);
+      assert.equal(body.attr("bgcolor"), "");
+    },
+    "removes a namespaced attribute as a function": function(body) {
+      body.attr("xlink:href", "url").attr("xlink:href", function() { return null; });
+      assert.equal(body.attr("xlink:href"), "");
+    },
+    "returns the current selection": function(body) {
+      assert.isTrue(body.attr("foo", "bar") === body);
+    }
+  }
+});
+
+suite.addBatch({
+  "selectAll(div)": {
+    topic: function() {
+      return d3.select("body").html("").selectAll("div").data(d3.range(2)).enter().append("div");
+    },
+    "sets an attribute as a string": function(div) {
+      div.attr("bgcolor", "red");
+      assert.equal(div[0][0].getAttribute("bgcolor"), "red");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "red");
+    },
+    "sets an attribute as a number": function(div) {
+      div.attr("opacity", 0.4);
+      assert.equal(div[0][0].getAttribute("opacity"), "0.4");
+      assert.equal(div[0][1].getAttribute("opacity"), "0.4");
+    },
+    "sets an attribute as a function": function(div) {
+      div.attr("bgcolor", function() { return "coral"; });
+      assert.equal(div[0][0].getAttribute("bgcolor"), "coral");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "coral");
+    },
+    "sets an attribute as a function of data": function(div) {
+      div.attr("bgcolor", d3.interpolateRgb("brown", "steelblue"));
+      assert.equal(div[0][0].getAttribute("bgcolor"), "#a52a2a");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "#4682b4");
+    },
+    "sets an attribute as a function of index": function(div) {
+      div.attr("bgcolor", function(d, i) { return "color-" + i; });
+      assert.equal(div[0][0].getAttribute("bgcolor"), "color-0");
+      assert.equal(div[0][1].getAttribute("bgcolor"), "color-1");
+    },
+    "sets a namespaced attribute as a string": function(div) {
+      div.attr("xlink:href", "url");
+      assert.equal(div[0][0].getAttributeNS("http://www.w3.org/1999/xlink", "href"), "url");
+      assert.equal(div[0][1].getAttributeNS("http://www.w3.org/1999/xlink", "href"), "url");
+    },
+    "sets a namespaced attribute as a function": function(div) {
+      div.data(["red", "blue"]).attr("xlink:href", function(d, i) { return d + "-" + i; });
+      assert.equal(div[0][0].getAttributeNS("http://www.w3.org/1999/xlink", "href"), "red-0");
+      assert.equal(div[0][1].getAttributeNS("http://www.w3.org/1999/xlink", "href"), "blue-1");
+    },
+    "gets an attribute value": function(div) {
+      div[0][0].setAttribute("bgcolor", "purple");
+      assert.equal(div.attr("bgcolor"), "purple");
+    },
+    "gets a namespaced attribute value": function(div) {
+      div[0][0].setAttributeNS("http://www.w3.org/1999/xlink", "foo", "bar");
+      assert.equal(div.attr("xlink:foo"), "bar");
+    },
+    "removes an attribute as null": function(div) {
+      div.attr("href", "url").attr("href", null);
+      assert.equal(div[0][0].getAttribute("href"), "");
+      assert.equal(div[0][1].getAttribute("href"), "");
+    },
+    "removes an attribute as a function": function(div) {
+      div.attr("href", "url").attr("href", function() { return null; });
+      assert.equal(div[0][0].getAttribute("href"), "");
+      assert.equal(div[0][1].getAttribute("href"), "");
+    },
+    "removes a namespaced attribute as null": function(div) {
+      div.attr("xlink:foo", "bar").attr("xlink:foo", null);
+      assert.equal(div[0][0].getAttributeNS("http://www.w3.org/1999/xlink", "foo"), "");
+      assert.equal(div[0][1].getAttributeNS("http://www.w3.org/1999/xlink", "foo"), "");
+    },
+    "removes a namespaced attribute as a function": function(div) {
+      div.attr("xlink:foo", "bar").attr("xlink:foo", function() { return null; });
+      assert.equal(div[0][0].getAttributeNS("http://www.w3.org/1999/xlink", "foo"), "");
+      assert.equal(div[0][1].getAttributeNS("http://www.w3.org/1999/xlink", "foo"), "");
+    },
+    "ignores null nodes": function(div) {
+      var some = d3.selectAll("div");
+      some[0][1] = null;
+      some.attr("href", null).attr("href", "url");
+      assert.equal(div[0][0].getAttribute("href"), "url");
+      assert.equal(div[0][1].getAttribute("href"), "");
+    },
+    "returns the current selection": function(div) {
+      assert.isTrue(div.attr("foo", "bar") === div);
+    }
+  }
+});
+
+suite.export(module);