var vows = require(“vows”),

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

var suite = vows.describe(“selection.property”);

suite.addBatch({

"select(body)": {
  topic: load("selection/property").document(),
  "on a simple page": {
    topic: function(d3) {
      return d3.select("body");
    },
    "sets a property as a string": function(body) {
      body.property("bgcolor", "red");
      assert.equal(body.node().bgcolor, "red");
    },
    "sets a property as a number": function(body) {
      body.property("opacity", 1);
      assert.equal(body.node().opacity, "1");
    },
    "sets a property as a function": function(body) {
      body.property("bgcolor", function() { return "orange"; });
      assert.equal(body.node().bgcolor, "orange");
    },
    "sets properties as a map of constants": function(body) {
      body.property({bgcolor: "purple", opacity: .41});
      assert.equal(body.node().bgcolor, "purple");
      assert.equal(body.node().opacity, .41);
    },
    "sets properties as a map of functions": function(body) {
      body.data(["cyan"]).property({bgcolor: String, opacity: function(d, i) { return i; }});
      assert.equal(body.node().bgcolor, "cyan");
      assert.equal(body.node().opacity, 0);
    },
    "gets a property value": function(body) {
      body.node().bgcolor = "yellow";
      assert.equal(body.property("bgcolor"), "yellow");
    },
    "removes a property as null": function(body) {
      body.property("bgcolor", "yellow").property("bgcolor", null);
      assert.isFalse("bgcolor" in body.node());
    },
    "removes a property as a function": function(body) {
      body.property("bgcolor", "yellow").property("bgcolor", function() { return null });
      assert.isFalse("bgcolor" in body.node());
    },
    "removes properties as a map of nulls": function(body) {
      body.node().bgcolor = "red";
      body.property({bgcolor: null});
      assert.isFalse("bgcolor" in body.node());
    },
    "removes properties as a map of functions that return null": function(body) {
      body.node().bgcolor = "red";
      body.property({bgcolor: function() {}});
      assert.isFalse("bgcolor" in body.node());
    },
    "returns the current selection": function(body) {
      assert.isTrue(body.property("bgcolor", "yellow") === body);
    }
  }
}

});

suite.addBatch({

"selectAll(div)": {
  topic: load("selection/property").document(),
  "on a simple page": {
    topic: function(d3) {
      return d3.select("body").html("").selectAll("div").data([0, 1]).enter().append("div");
    },
    "sets a property as a string": function(div) {
      div.property("bgcolor", "red");
      assert.equal(div[0][0].bgcolor, "red");
      assert.equal(div[0][1].bgcolor, "red");
    },
    "sets a property as a number": function(div) {
      div.property("opacity", 0.4);
      assert.strictEqual(div[0][0].opacity, 0.4);
      assert.strictEqual(div[0][1].opacity, 0.4);
    },
    "sets a property as a function": function(div) {
      var i = _.interpolateRgb("brown", "steelblue");
      div.property("_color", function(d) { return d3.rgb(i(d)); }); // make a copy
      assert.rgbEqual(div[0][0]._color, 165, 42, 42);
      assert.rgbEqual(div[0][1]._color, 70, 130, 180);
    },
    "gets a property value": function(div) {
      div[0][0].bgcolor = "purple";
      assert.equal(div.property("bgcolor"), "purple");
    },
    "removes a property as null": function(div) {
      div.property("bgcolor", "yellow").property("bgcolor", null);
      assert.isFalse("bgcolor" in div[0][0]);
      assert.isFalse("bgcolor" in div[0][1]);
    },
    "removes a property as a function": function(div) {
      div.property("bgcolor", "yellow").property("bgcolor", function() { return null });
      assert.isFalse("bgcolor" in div[0][0]);
      assert.isFalse("bgcolor" in div[0][1]);
    },
    "returns the current selection": function(div) {
      assert.isTrue(div.property("bgcolor", "yellow") === div);
    },
    "ignores null nodes": function(div) {
      var node = div[0][1];
      div.property("bgcolor", null);
      div[0][1] = null;
      div.property("bgcolor", "red");
      assert.equal(div[0][0].bgcolor, "red");
      assert.isFalse("bgcolor" in node);
    }
  }
}

});

suite.export(module);