diff -r efd9c589177a -r c0b4a8b5a012 toolkit/javascript/d3/test/core/rebind-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/javascript/d3/test/core/rebind-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,38 @@
+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.rebind");
+
+suite.addBatch({
+  "rebind": {
+    topic: function() {
+      return d3.rebind;
+    },
+    "bound function uses object as context": function(rebind) {
+      var a = {}, that, f = rebind(a, function() { that = this; });
+      assert.strictEqual((f(), that), a);
+      assert.strictEqual((f.call({}), that), a);
+    },
+    "bound function receives any arguments": function(rebind) {
+      var a = [], b = {}, f = rebind(a, function() { a = Array.prototype.slice.call(arguments); });
+      assert.deepEqual((f(), a), []);
+      assert.deepEqual((f(1), a), [1]);
+      assert.deepEqual((f(null), a), [null]);
+      assert.deepEqual((f(b, b, 1), a), [b, b, 1]);
+    },
+    "bound function returns object if arguments": function(rebind) {
+      var a = {}, f = rebind(a, function() {});
+      assert.strictEqual(f(1), a);
+      assert.strictEqual(f(1, 2, 3), a);
+    },
+    "bound function returns return value if no arguments": function(rebind) {
+      var a = {}, f = rebind({}, function() { return a; });
+      assert.strictEqual(f(), a);
+    }
+  }
+});
+
+suite.export(module);