diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/test/core/selection-style-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/test/core/selection-style-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,100 @@
+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("selection.style");
+
+suite.addBatch({
+  "select(body)": {
+    topic: function() {
+      return d3.select("body").html("");
+    },
+    "sets a property as a string": function(body) {
+      body.style("background-color", "red");
+      assert.equal(document.body.style["background-color"], "red");
+    },
+    "sets a property as a number": function(body) {
+      body.style("opacity", .3);
+      assert.equal(document.body.style["opacity"], "0.3");
+    },
+    "sets a property as a function": function(body) {
+      body.style("background-color", function() { return "orange"; });
+      assert.equal(document.body.style["background-color"], "orange");
+    },
+    "gets a property value": function(body) {
+      document.body.style.setProperty("background-color", "yellow", "");
+      assert.equal(body.style("background-color"), "yellow");
+    },
+    "observes the specified priority": function(body) {
+      body.style("background-color", "green", "important");
+      assert.equal(document.body.style.getPropertyPriority("background-color"), "important");
+    },
+    "removes a property as null": function(body) {
+      body.style("background-color", "green").style("background-color", null);
+      assert.equal(body.style("background-color"), "");
+    },
+    "removes a property as a function": function(body) {
+      body.style("background-color", "green").style("background-color", function() { return null; });
+      assert.equal(body.style("background-color"), "");
+    },
+    "returns the current selection": function(body) {
+      assert.isTrue(body.style("background-color", "green") === body);
+    }
+  }
+});
+
+suite.addBatch({
+  "selectAll(div)": {
+    topic: function() {
+      return d3.select("body").html("").selectAll("div").data(d3.range(2)).enter().append("div");
+    },
+    "sets a property as a string": function(div) {
+      div.style("background-color", "red");
+      assert.equal(div[0][0].style["background-color"], "red");
+      assert.equal(div[0][1].style["background-color"], "red");
+    },
+    "sets a property as a number": function(div) {
+      div.style("opacity", .5);
+      assert.equal(div[0][0].style["opacity"], "0.5");
+      assert.equal(div[0][1].style["opacity"], "0.5");
+    },
+    "sets a property as a function": function(div) {
+      div.style("background-color", d3.interpolateRgb("orange", "yellow"));
+      assert.equal(div[0][0].style["background-color"], "#ffa500");
+      assert.equal(div[0][1].style["background-color"], "#ffff00");
+    },
+    "gets a property value": function(div) {
+      div[0][0].style.setProperty("background-color", "green", "");
+      assert.equal(div.style("background-color"), "green");
+    },
+    "observes the specified priority": function(div) {
+      div.style("background-color", "blue", "important");
+      assert.equal(div[0][0].style.getPropertyPriority("background-color"), "important");
+      assert.equal(div[0][1].style.getPropertyPriority("background-color"), "important");
+    },
+    "removes a property as null": function(div) {
+      div.style("background-color", "red").style("background-color", null);
+      assert.equal(div[0][0].style["background-color"], "");
+      assert.equal(div[0][1].style["background-color"], "");
+    },
+    "removes a property as a function": function(div) {
+      div.style("background-color", "red").style("background-color", function() { return null; });
+      assert.equal(div[0][0].style["background-color"], "");
+      assert.equal(div[0][1].style["background-color"], "");
+    },
+    "ignores null nodes": function(div) {
+      var some = d3.selectAll("div");
+      some[0][1] = null;
+      some.style("background-color", null).style("background-color", "red");
+      assert.equal(div[0][0].style["background-color"], "red");
+      assert.equal(div[0][1].style["background-color"], "");
+    },
+    "returns the current selection": function(div) {
+      assert.isTrue(div.style("background-color", "green") === div);
+    }
+  }
+});
+
+suite.export(module);