var vows = require(“vows”),

load = require("../load"),
assert = require("../assert");

var suite = vows.describe(“d3.select”);

suite.addBatch({

"select": {
  topic: load("selection/select").document(),
  "on a simple page": {
    topic: function(d3) {
      var body = d3.select("body");
      body.append("span").attr("class", "f00").attr("id", "b4r").attr("name", "b4z");
      body.append("div").attr("class", "foo").attr("id", "bar").attr("name", "baz");
      return d3;
    },
    "selects by element name": function(d3) {
      var div = d3.select("div");
      assert.equal(div[0][0].tagName, "DIV");
    },
    "selects by class name": function(d3) {
      var div = d3.select(".foo");
      assert.equal(div[0][0].className, "foo");
    },
    "selects by id": function(d3) {
      var div = d3.select("div#bar");
      assert.equal(div[0][0].id, "bar");
    },
    "selects by attribute value": function(d3) {
      var div = d3.select("[name=baz]");
      assert.equal(div[0][0].getAttribute("name"), "baz");
    },
    "selects by node": function(d3) {
      var body = d3.select("body").node(),
          div = d3.select(body.lastChild);
      assert.isTrue(div[0][0] === body.lastChild);
      assert.lengthOf(div, 1);
      assert.lengthOf(div[0], 1);
    },
    "sets the parentNode to the document element": function(d3) {
      var selection = d3.select("body"),
          document = d3.selection().node().ownerDocument;
      assert.strictEqual(selection[0].parentNode, document.documentElement);
    },
    "does not propagate data from the document": function(d3) {
      var document = d3.selection().node().ownerDocument;
      document.__data__ = 42;
      delete document.body.__data__;
      try {
        assert.isUndefined(d3.select("body").datum());
      } finally {
        delete document.__data__;
      }
    },
    "does not propagate data from the document element": function(d3) {
      var document = d3.selection().node().ownerDocument;
      document.documentElement.__data__ = 42;
      delete document.body.__data__;
      try {
        assert.isUndefined(d3.select("body").datum());
      } finally {
        delete document.documentElement.__data__;
      }
    }
  }
}

});

suite.export(module);